Youtube Format IDs

Source: https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa

Skip to content

[](https://gist.github.com/)

Search Gists Search Gists

All gistsBack to GitHubSign inSign up

[](https://gist.github.com/)

Sign inSign up

You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert

{{ message }}

Instantly share code, notes, and snippets.


MartinEesmaa/**youtube_formats.md**

Forked from AgentOak/youtube_formats.md

Last active August 28, 2026 16:55

Show Gist options

- Download ZIP

- Star 306(306)You must be signed in to star a gist

- Fork 27(27)You must be signed in to fork a gist

* Embed# Select an option

- Embed Embed this gist in your website.

- Share Copy sharable link for this gist.

- Clone via HTTPS Clone using the web URL.

No results found

Learn more about clone URLs

Clone this repository at <script src="https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa.js"></script>

- Save MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa to your computer and use it in GitHub Desktop.

CodeRevisions 121Stars 305Forks 27

Embed

Select an option

- Embed Embed this gist in your website.

- Share Copy sharable link for this gist.

- Clone via HTTPS Clone using the web URL.

No results found

Learn more about clone URLs

Clone this repository at <script src="https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa.js"></script>

Save MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa to your computer and use it in GitHub Desktop.

Download ZIP

Youtube Format IDs

Raw

**youtube_formats.md**

Note: This is all almost full YouTube ID informations. Original owner goes to AgentOak, modified version by Martin Eesmaa.

See the credits and also special thanks in below.

Before this gist has been forked, AgentOak made original gist on November 13 2019 and it was last updated on May 5 2021.

From now on, this forked gist is maintained by Martin Eesmaa since 17 September 2022. I joined to yt-dlp Discord server on 3rd April 2026 with my Discord username: martineesmaa.

**Last updated: 20 August 2026**

Also known as itag or format codes and way back they could be specified with the fmt parameter (e.g. `&fmt=22`) used to be on website address bar after YouTube Video ID, (deprecated?). Depending on the age and/or popularity of the video, not all formats will be available.

DASH video

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#dash-video)

| Resolution | AV1 HDR (HFR) | AV1 HFR | AV1 | VP9.2 HDR (HFR) | VP9 HFR | VP9 | H.264 HFR | H.264 | VP8 | | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | | | MP4 | MP4 | MP4 | WebM | WebM | WebM | MP4 | MP4 | WebM | | **4320p** | 702 | 402/571 | | | 272 | | | ~~138~~ | | | **2160p** | 701 | 401 | | 337 | 315 | (313) | (305) | (266) | | | **1440p** | 700 | 400 | | 336 | 308 | (271) | (304) | (264) | | | **1080p** | 699 | 399/721 | | 335 | 303 | 248/356 | 299 | 137 | 170 | | **720p** | 698 | 398 | | 334 | 302/612 | 247 | 298 | 136/214 | 169 | | **480p** | 697 | | 397 | 333 | | 244 | | 135 | 168 | | **360p** | 696 | | 396 | 332 | | 243 | | 134 | 167 | | **240p** | 695 | | 395 | 331 | | 242 | | 133 | | | **144p** | 694 | | 394 | 330 | | 278/598 | | 160/597 | |

- HFR stands for "High Framerate", which means up to 60 FPS, whereas non-HFR is limited to 30 FPS

- Non-HFR 1080p+ H.264 and VP9 variants are not provided for HFR videos anymore

- Same IDs are reused for 360° videos

- 1440p+ H.264 variants are only provided for 360° videos anymore

- At the moment, AV1 variants are only provided for popular videos

- All AV1 variants can be HDR (no separate non-HDR AV1 variants are offered)

- **AV1 HFR High**: High refers to the bitrate. These variants have **~3-4 times** the bitrate of their normal counterparts. Additional side effect is providing AV1 HFR variants for low resolutions (<=480p). These variants are rare even among videos with AV1 variants. Found on this video.

- **AV1 HFR 4320p**: Format 571 has roughly 50% higher bitrate than 402. Sometimes only one of them is offered, sometimes both. Can be seen on this video.

- **VP8** can be found this video.

- At **format 356 & 712**, it is the only YouTube premium video format and requires your YouTube account subscribed with Premium subscription to pass cookies file. Format 356 is connected to **format 616 (available on yt-dlp, not 356)** of M3U8.

- At **format 214**, some rare videos were encoded and it is linked from **format 379 (available on yt-dlp, not 214)** of M3U8 can be found this video

- For some marked parenthesis format like `(271)` means that it may be claimed by someone without video link, was old superseeded format from YouTube or something else. I honestly don't know yet...

- Please take note that YouTube started to use AI for use super resolution (announced it in late 2025, Q4) from low quality videos (e.g. old nostalgia videos) into high quality videos for some resolutions selected. For example source video resolution is 240p and it has extended resolutions up to 720p and after format adds suffix `-sr`. Most videos are not super resolution formats available, some videos may have. Example video

Rare videos of AV1

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#rare-videos-of-av1)

Some rarely videos may get AV1 video codec for low views or/and upload date less than 24 hours for average 10 minutes duration video.

It could be luck or/and conveniency for YouTube's quiet decision.

Here is sample videos:

https://www.youtube.com/watch?v=BizgNeskJ6o (20 hours ago and at least 50 views, reported on 26.06.2025, later it was deleted it)

https://www.youtube.com/watch?v=r-X4DJxT6gY (4 years ago and unlisted video, got couple months to get AV1)

Duplicate video IDs

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#duplicate-video-ids)

Those duplicate video IDs of m3u8 as Apple Native HLS are linked to common numbers, not a rare numbers.

270 (m3u8) == 137 (https) are same video quality, but different protocol.

Thanks, dtlnor for explanation of equalation video IDs.

Also even special thanks, gamer191 to report linked M3U8 codes to common codes.

Graphic table about linked M3U8 codes to common numbers

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#graphic-table-about-linked-m3u8-codes-to-common-numbers)

| Code (M3U8) | Linked to common code from HTTPS | | --- | --- | | 229 | 133 | | 230 | 134 | | 231 | 135 | | 232 | 136 | | 233 | 139 | | 234 | 140 | | 269 | 160 | | 270 | 137 | | 311 | 298 | | 312 | 299 | | 379 | 214 | | 602 | 598 | | 603 | 278 | | 604 | 242 | | 605 | 243 | | 606 | 244 | | 609 | 247 | | 612 | 302 | | 614 | 248 | | 617 | 303 | | 620 | 271 | | 625 | 313 |

Raw code:

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#raw-code)

``` 602 mp4 256x144 12 │ ~ 9.28MiB 87k m3u8 │ vp09.00.10.08 87k video only 269 mp4 256x144 24 │ ~ 18.55MiB 175k m3u8 │ avc1.4D400C 175k video only 603 mp4 256x144 24 │ ~ 16.62MiB 156k m3u8 │ vp09.00.11.08 156k video only 229 mp4 426x240 24 │ ~ 34.72MiB 327k m3u8 │ avc1.4D4015 327k video only 604 mp4 426x240 24 │ ~ 30.72MiB 289k m3u8 │ vp09.00.20.08 289k video only 230 mp4 640x360 24 │ ~ 86.22MiB 812k m3u8 │ avc1.4D401E 812k video only 605 mp4 640x360 24 │ ~ 60.27MiB 567k m3u8 │ vp09.00.21.08 567k video only 231 mp4 854x480 24 │ ~144.25MiB 1358k m3u8 │ avc1.4D401E 1358k video only 606 mp4 854x480 24 │ ~ 98.31MiB 926k m3u8 │ vp09.00.30.08 926k video only 232 mp4 1280x720 24 │ ~280.39MiB 2640k m3u8 │ avc1.4D401F 2640k video only 609 mp4 1280x720 24 │ ~181.03MiB 1705k m3u8 │ vp09.00.31.08 1705k video only 311 mp4 1280x720 60 │ ~ 1.14GiB 4842k m3u8 │ avc1.4D4020 4842k video only 270 mp4 1920x1080 24 │ ~498.55MiB 4694k m3u8 │ avc1.640028 4694k video only 614 mp4 1920x1080 24 │ ~312.21MiB 2940k m3u8 │ vp09.00.40.08 2940k video only 617 mp4 1920x1080 60 │ ~ 1.52GiB 6443k m3u8 │ vp09.00.41.08 6443k video only 312 mp4 1920x1080 60 │ ~ 1.89GiB 7987k m3u8 │ avc1.64002A 7987k video only 620 mp4 2560x1440 24 │ ~928.71MiB 8745k m3u8 │ vp09.00.50.08 8745k video only 623 mp4 2560x1440 60 │ ~ 3.85GiB 16287k m3u8 │ vp09.00.50.08 16287k video only 625 mp4 3840x2160 24 │ ~ 1.94GiB 18661k m3u8 │ vp09.00.50.08 18661k video only 628 mp4 3840x2160 60 │ ~ 8.27GiB 35007k m3u8 │ vp09.00.51.08 35007k video only ```

Examples of two videos:

30 fps video

60 fps video

Extra video formats of 72p & 608p

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#extra-video-formats-of-72p--608p)

Formats of 228, 779, 780 and 788 were rarely encoded to some YouTube videos, the video resolution is 1080x608 and always under 30 FPS:

But for **format 228** is 72p quality and only 6 FPS.

| Code | Container | Video Codec | Explanations | | --- | --- | --- | --- | | 228 | MP4 | AVC | Like thumbnail quality with slow FPS | | 779 | WebM | VP9 | Efficiency possible saving data for mobiles | | 780 | WebM | VP9 | Best quality possible of VP9 than format 779 | | 787 | WebM | AV1 | Saves more sizes with quality than VP9, some videos only | | 788 | MP4 | AV1 | Saves sizes and quality little than VP9, but some videos only |

Sample video link here.

Second sample video link of **format 228**here

Third sample video link of **format 787**here

Thanks to @GammaBoost for finding three formats (779,780,788)!

Thanks to @aokin1999 for finding a **format 228**!

Thanks to @jthievre for finding a **format 787**!

DASH audio

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#dash-audio)

| Code | Container | Audio Codec | Audio Bitrate | Channels | Still offered? | | :--- | :--- | :--- | ---: | ---: | ---: | | 139 | MP4 | AAC (HE v1) | 48 Kbps | Stereo (2) | Yes, YT Music, DRC optional* | | 140 | MP4 | AAC (LC) | 128 Kbps | Stereo (2) | Yes, YT Music, DRC optional | | (141) | MP4 | AAC (LC) | 256 Kbps | Stereo (2) | No, YT Music* | | 249 | WebM | Opus | (VBR) ~50 Kbps | Stereo (2) | Some, DRC optional | | 250 | WebM | Opus | (VBR) ~70 Kbps | Stereo (2) | Some, DRC optional | | 251 | WebM | Opus | (VBR) ~128 Kbps | Stereo (2) | Yes, DRC optional | | 256 | MP4 | AAC (HE v1) | 192 Kbps | Surround (5.1) | Rarely | | 258 | MP4 | AAC (LC) | 384 Kbps | Surround (5.1) | Rarely | | 325 | MP4 | DTSE (DTS Express) | 384 Kbps | Surround (5.1) | Rarely* | | 327 | MP4 | AAC (LC) | 256 Kbps | Surround (5.1) | ?* | | 328 | MP4 | EAC3 | 384 Kbps | Surround (5.1) | Rarely | | 338 | WebM | Opus | (VBR) ~480 Kbps (?) | Ambisonic (4) | ?* | | 380 | MP4 | AC3 | 384 Kbps | Surround (5.1) | Rarely | | 599 | MP4 | AAC (HE v1) | 30 Kbps | Stereo (2) | Yes*, DRC optional | | 600 | WebM | Opus | (VBR) ~35 Kbps | Stereo (2) | Yes*, DRC optional | | 773 | MP4 | IAMF (Opus) | (VBR) ~900 Kbps | Binaural (7.1.4) | Rarely* | | 774 | WebM | Opus | (VBR) ~256 Kbps | Stereo (2) | Some, YT Music* |

- Surround audio can be found on some demo videos

- **YT Music**: These formats are offered on Youtube Music. Format 141 is only available to Premium users with High Quality option

- **Format 327, 338**: These have been found on this Stereo 3D video

- **Format 325**: You can find out one video link here

- **Format 773**: IAMF uncompressed audio track is compressed into Opus audio codec and can play with three groups of Stereo, Surround (5.1) and Binaural for up to 18 channels (7.1.4). You can find out video link here

- **Format 774 at YT Music**: Some music have available high quality of Opus up to 256 kbps to Premium users, music link here and also bypassing is no longer possible to download for non premium users unless you're subscribed to YouTube Premium and can download format available by extra arguments of cookies from browser or the authentication.

- **Format 599, 600**: Since February 2025, YouTube restricted these two formats only limit access to mobile web with POT token, please add this argument from command: `--extractor-args "youtube:player_client=mweb;formats=missing_pot"` (Thanks, gamer191!)

- **DRC Optional**: Only formats of 139, 140, 249, 250, 251, 599 and 600 were using DRC normalization sound for some videos.

- **Format 139, 338**: Default yt-dlp without argument when using `-F` or `--list-formats` does not show up, so please add this argument to show available formats: `--extractor-args "youtube:player_client=all"`.

Deprecated note (this is old note):

- Since February 2025, YouTube ~~discontinued~~ (see the current top) formats of **599** and **600** due for every video uploaded.

Legacy (non-DASH)

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#legacy-non-dash)

| Code | Container | Video Codec | Video Res. | Audio Codec | Audio Bitrate | Channels | Still offered? | | :--- | :--- | :--- | ---: | :--- | ---: | ---: | ---: | | 5 | FLV | H.263 (Sorenson Spark) | 240p (4:3) | MP3 | 64 Kbps | Mono (1) | No | | 6 | FLV | H.263 (Sorenson Spark) | 270p (4:3) | MP3 | 64 Kbps | Mono (1) | No | | 13 | 3GP | MPEG-4 (Simple, L0) | 144p | AAC (LC) | Unknown | Mono (1) | No | | 17 | 3GP | MPEG-4 (Simple, L0) | 144p | AAC (LC) | 24 Kbps | Mono (1) | No*, old mobile phones | | 18 | MP4 | H.264 (Main, L3.0) | 360p | AAC (LC) | 96 (most) / 128 Kbps (some) | Stereo (2) | Yes, GDrive | | 22 | MP4 | H.264 (High, L3.1) | 720p | AAC (LC) | 128 Kbps | Stereo (2) | No*, GDrive | | 34 | FLV | H.264 (Main, L3.0) | 360p | AAC | 128 Kbps | Stereo (2) | No | | 35 | FLV | H.264 (Main, L3.0) | 480p | AAC | 128 Kbps | Stereo (2) | No | | 36 | 3GP | MPEG-4 (Simple, L0) | 144p | AAC (LC) | 24 Kbps | Mono (1) | Rarely, old mobile phones | | (37) | MP4 | H.264 (High, L4.0) | 1080p | AAC (LC) | 128 Kbps | Stereo (2) | No, GDrive | | 38 | MP4 | H.264 | 3072p | AAC | 192 Kbps | Stereo (2) | No | | 43 | WebM | VP8 | 360p | Vorbis | 128 Kbps | Stereo (2) | No | | 44 | WebM | VP8 | 480p | Vorbis | 128 Kbps | Stereo (2) | No | | 45 | WebM | VP8 | 720p | Vorbis | 192 Kbps | Stereo (2) | No | | 46 | WebM | VP8 | 1080p | Vorbis | 192 Kbps | Stereo (2) | No | | (59) | MP4 | H.264 (Main, L3.1) | 480p | AAC (LC) | 128 Kbps | Stereo (2) | No, GDrive | | 78 | MP4 | H.264 | 480p | AAC | 128 Kbps | Stereo (2) | No |

- **Format 17**: Allows for old mobile phones (eg. cell phones) to watch all videos. The video can have 7.5 & 12 fps only.

- **Format 18**: Some videos are encoded with audio bitrate of 128 kbps for shorter lengths, most of them are with 96 kbps if most lengths or less views.

- Always limited maximum to 30 FPS (frames per second)

- **GDrive**: These formats are offered for Google Drive video previews. Note that the video player on GDrive displays incorrect codecs on rightclick -> stats

- **Format 22**: Available for most videos, except music and music videos (not limited to official music channels!)

- Starting since May 2024, the **Format 17** is removed for every mobile YouTube videos uploaded.

- Later since 21 June 2024, the **Format 22** is also removed for every YouTube HD videos uploaded.

Livestreams (non-DASH)

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#livestreams-non-dash)

| Code | Container | Video Codec | Video Res. | Audio Codec | Audio Bitrate | Still offered? | | :--- | :--- | :--- | ---: | :--- | ---: | ---: | | 91 | MPEG-TS (HLS) | H.264 (Baseline, L1.1) | 144p | AAC (HE v1) | 48 Kbps | Yes | | 92 | MPEG-TS (HLS) | H.264 (Main, L2.1) | 240p | AAC (HE v1) | 48 Kbps | Yes | | 93 | MPEG-TS (HLS) | H.264 (Main, L3.0) | 360p | AAC (LC) | 128 Kbps | Yes | | 94 | MPEG-TS (HLS) | H.264 (Main, L3.1) | 480p | AAC (LC) | 128 Kbps | Yes | | 95 | MPEG-TS (HLS) | H.264 (Main, L3.1) | 720p | AAC (LC) | 128 Kbps | Yes | | 96 | MPEG-TS (HLS) | H.264 (High, L4.0) | 1080p | AAC (LC) | 128 Kbps | Yes | | 300 | MPEG-TS (HLS) | H.264 (Main, L3.2) | HFR 720p | AAC (LC) | 128 Kbps | Yes | | 301 | MPEG-TS (HLS) | H.264 (High, L4.2) | HFR 1080p | AAC (LC) | 128 Kbps | Yes |

- Non-HFR variants are limited to 30 FPS, HFR to 60 FPS

- Non-HFR variants for 720p and 1080p may not be offered if HFR is available

- Livestreams are also offered through DASH video (H.264, VP9) and DASH audio (AAC) streams

- Both audio codecs of MPEG-TS are limited sample rate to 44.1 Khz for streaming a live broadcast.

- Also videos without live broadcasting can play formats for acting user agent Safari Web.

Template youtube-dl formats

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#template-youtube-dl-formats)

For archiving videos: Only choose combinations that fit WebM (VP9+Opus) or MP4 (H.264+AAC)

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#for-archiving-videos-only-choose-combinations-that-fit-webm-vp9opus-or-mp4-h264aac)

``` bestvideo[ext=webm]+251/bestvideo[ext=mp4]+(258/256/140)/bestvideo[ext=webm]+(250/249)/best ```

For archiving audio: Choose any format that's best

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#for-archiving-audio-choose-any-format-thats-best)

AAC Surround 384 / Opus 160 / AAC 192 / AAC Surround 192 / AAC 128 / Opus 70 / AAC 96 / Opus 50 / AAC 48

``` 258/251/22/256/140/250/18/249/139 ```

For streaming videos: Allow any combination

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#for-streaming-videos-allow-any-combination)

``` bestvideo+bestaudio/best ```

yt-dlp usage example

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#yt-dlp-usage-example)

Archive videos

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#archive-videos)

``` yt-dlp --download-archive yt-dlp.list --ignore-errors --write-info-json --add-metadata --write-sub --sub-lang en,de,ja --write-thumbnail --embed-subs -f "<format>" "<URL>" ```

Archive audio

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#archive-audio)

``` yt-dlp --download-archive yt-dlp.list --ignore-errors --write-info-json --add-metadata --write-sub --sub-lang en,de,ja --write-thumbnail --embed-thumbnail --extract-audio -f "<format>" "<URL>" ```

Complete archive video with audio, comments, subtitles, thumbnail and everything about YouTube ID:

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#complete-archive-video-with-audio-comments-subtitles-thumbnail-and-everything-about-youtube-id)

``` yt-dlp --write-description --write-comments --write-link --write-auto-subs --embed-subs --embed-thumbnail --embed-chapters --sponsorblock-mark all https://www.youtube.com/watch?v=WhWc3b3KhnY ```

Troubleshooting

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#troubleshooting)

Ensure you have yt-dlp is installed via Python or added to PATH for non-Python installation. Make sure it is up to date:

Update yt-dlp via pip (recommended):

``` pip install yt-dlp -U ```

Since late 2025, YouTube has given sleep time delay before downloading videos, this may be delay for pre-download method, even cannot download a video with age-restricted method trying to bypass it...

Credits and special thanks

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#credits-and-special-thanks)

AgentOak (original owner) made YouTube list formats of video and audio ID especially with tips.

MartinEesmaa (forked owner) updated YouTube list formats for up to date.

Special thanks for finding/fixing by:

qzmtch for finding missing 616 format

dtlnor for little interesting explanation of duplicate formats same

r8420 for finding missing 612 format

Ciancy28 for finding high quality of Opus 256 kbps (format 774) in YT Music

joaquinito2070 for renaming youtube-dl to yt-dlp and fixing incorrect bitrates. Some commits were on it.

mscalindt for finding format 379 that was undocumented before I updated it now. It was linked to format 214 of DASH video.

Manwithpants812 for finding missing format 356 due to undocumented which is related to format 616.

Low-power for claiming the experience finding of format 22 removed since 21 June 2024.

Aokin1999 for finding spot fixes & corrections, also pretty cool with fork gist :)

BriellaBugs for screenshot to show Super Resolution by quality selection menu

[](https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa)

Load earlier comments...


**MartinEesmaa** commented Jul 21, 2025

Copy link Copy Markdown

Author

> @MartinEesmaa`241` or `214`? Btw `214` is listed under VP9 in the table, so I don't get this at all. Correct the info please.

Sorry my apologies. It was linked format to 214, not 241, sorry for misspelled number!

- Martin Eesmaa

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**MartinEesmaa** commented Jul 21, 2025

Copy link Copy Markdown

Author

Fixed it, moving 214 format from VP9 to H.264, @aokin1999. Thanks! :)

- Martin Eesmaa

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**TEOL85** commented Jul 22, 2025•

edited

Loading

Uh oh!

There was an error while loading. Please reload this page.

Copy link Copy Markdown

I think I found something rare on Grover Washington Jr. - Just The Two Of Us a couple of itag codes which has 256kbs audio but for free not pay per listen in m4a format but the picture is totally black screen in my media player and that black picture has an AV1 codec according to YouTube the stats for nerds itself so maybe AV1 doesn't mix well with 256 m4a or maybe my video l=playing sofeware is too out of date to get a picture.

I checked the itags out because I was curious why did my software which uses m3u8 give me a black screen with m4a 256 for free as well on that itag and these are the 2 itags that 256 free had.

616 1080 m3u8 Rare 256 m4a Free Audio Broken Picture Black Screen

290 1080 m3u8 Rare 256 m4a Free Audio Broken Picture Black Screen

And this is what the non formats code scanning gave me on the same video for interesting comparing

251 1080 Sound Code which is normally VBR 128-160 vorbis

399 1080 Picture Code

398 720 Picture Code

397 480 Picture Code

396 360 Picture Code

395 240 Picture Code

394 144 Picture Code

So all the picture codes were all in a row but the sound code lesser bitrate than the in free mode so 256 free m4a is still on m3u8 but not on http.

Very fun that. The video with the black screen was 128 bitrate and the m4a was 256 on the itag but it also had problems even downloading in my software becasue it was so exotic the side panel download wouldn't even trigger but if you clicked hard download from the menu it got that verson out of it's m3u8 itag not like it needs the artwork on the file to listen to the track anyway.

File also had special enhanced audio on YouTube which I can't access but maybe those itags was it but if you have those itags you can get it for free it's one thats not blocked on my test download either way from those 616 and 290 itags.

The weird things you do to find out why you got a 256 file when you shouldn't be getting it for free.

Edit: Interesting 616 and 290 are not in your list of m3u8 formats so there you go it is legitlly exotic this free 256kbs with a blank picture itag but what is the code for free 256 when you convert that from m3u8 to http itag codes as it's probably an itag google never wanted us to learn about and more snaggers use http than m3u8 only the one I use for radio probably even uses it?

We really need the full list of these http to m3u8 conversions as well as m3u8 to http for those 2 codes as you can really analyse it for fun the weirdness of exotic video formats.

I think you guys should rethink making yt-dlp command line only as MSDOS is really out of date now and not everyone knows how to use it anymore we need you to make a GUI 32/64-Bit for your software as well Martin so we can have a play without having to be bothered about using the command line which is out of date and shouldn't really be used for software anymore.

YouTube Video and Audio Downloader (WebEx) by [feller] used to be a GUI available for yt-dlp with FFMPEG features available but available for your Firefox but feller hasn't updated it in years and the codes as well as URL's database is so out of date his GUI doesn't work for us anymore but it shows you how much better if yt-dlp stepped away from command line coding into a safe to use browser GUI yet along Windows GUI, Linux and Mac non browser and the experience is so much better than having to use out of date command lines and dare I say it better than Windows GUI's becasue that type of GUI is in your browser.

Command line mode within the extension as well would be good though for those things you actaully need it for but yeah we need a better experience for those who can't code or too lazy to type it in.

616-96=520

290-96=194

So the other formats flipped to +96 m3u8 might be this

251+96=347

399+96=495

398+96=494

397+96=493

396+96=492

395+96=491

394+96=490

Thats if it's +96 -96 like the rest of the conversions in the smaller m3u8 codes list we have to begin with it really needs to be updated to full though if +96 -96 is all there is to all the conversion like it looks to be if m3u8 was fully updated there wouldn't be so much issue in m3u8 relying software for the speed of the protocol software detecting stuff at the moment.

If going by the rest of the list might be the m3u8 to http conversion so if they are the conversions they are not even on the list neither so it really is new and exotic and so far only encountered on a YouTube Music 80s file becasue of having to mess around for radio and found out that it was exotic.

Edit: Maybe thats not so simple as +96 there are some +300 conversiosn as well in the existing lists. lol

Sorry about that I do yak a lot when nerding out.

https://youtu.be/gelwwYuYGn0?si=3WGyDJflAopbANw8

https://music.youtube.com/watch?v=gelwwYuYGn0&si=0lU_oQgayTItxUPh

General

Complete name : C:\Users\User\Desktop\Just the Two of Us.mp4

Format : MPEG-4

Format profile : Base Media

Codec ID : isom (isom/iso2/avc1/mp41)

File size : 20.5 MiB

Duration : 7 min 23 s

Overall bit rate mode : Variable

Overall bit rate : 388 kb/s

Frame rate : 25.000 FPS

Writing application : Lavf60.16.100

Video

ID : 1

Format : AVC

Format/Info : Advanced Video Codec

Format profile : High@L3.2

Format settings : CABAC / 3 Ref Frames

Format settings, CABAC : Yes

Format settings, Reference : 3 frames

Codec ID : avc1

Codec ID/Info : Advanced Video Coding

Duration : 7 min 23 s

Bit rate : 126 kb/s

Width : 1 080 pixels

Height : 1 080 pixels

Display aspect ratio : 1.000

Frame rate mode : Constant

Frame rate : 25.000 FPS

Color space : YUV

Chroma subsampling : 4:2:0

Bit depth : 8 bits

Scan type : Progressive

Bits/(Pixel*Frame) : 0.004

Stream size : 6.65 MiB (32%)

Writing library : x264 core 155 r2901 7d0ff22

Color range : Limited

Color primaries : BT.709

Transfer characteristics : BT.709

Matrix coefficients : BT.709

Codec configuration box : avcC

Audio

ID : 2

Format : AAC LC

Format/Info : Advanced Audio Codec Low Complexity

Codec ID : mp4a-40-2

Duration : 7 min 23 s

Bit rate mode : Variable

Bit rate : 256 kb/s

Maximum bit rate : 259 kb/s

Channel(s) : 2 channels

Channel layout : L R

Sampling rate : 44.1 kHz

Frame rate : 43.066 FPS (1024 SPF)

Compression mode : Lossy

Stream size : 13.5 MiB (66%)

Default : Yes

Alternate group : 1

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**aokin1999** commented Jul 22, 2025•

edited

Loading

Uh oh!

There was an error while loading. Please reload this page.

Copy link Copy Markdown

@TEOL85 🙄

251 is Opus ~128kbps (vorbis used other ids muxed with vp8, and those are deprecated, tho there are still a few standalone vp8 encodes)

616 is m3u8 id for 1080p Premium VP9 (356 https id) thats usually listed on popular 1080p videos (higher resolutions wont have premium formats)

270 (137) and 290 are both H.264/AVC 1080p, m3u8 rates are always artifically higher than https but consistent in a same video so probaly 290 is an higher bitrate variant of 137, so maybe it is 216. All these are video only, including 616(356). Only current format with both audio and video is 18 if i'm not wrong.

All the rest you say I just don't understand it. YT-DLP is commandline, and python, though there are .exe builds for windows. For some reason I can't download the 290 stream (but 270 doesn't give any problem). Maybe I would need to use some specific options but I don't have patience or time now, so, anyone else try to get it (and get the equivalent ID if possible).

Last edit (yeah I did a lot): I realized there are more avc formats, so I dunno, maybe a lot of different encodes (higher quality? tho it's still image so i doesnt make much sense) or just duplications.

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**hunderslash** commented Aug 28, 2025

Copy link Copy Markdown

Allegedly youtube has been experimenting with AI sharpening on certain video formats. (which obviously, is not exactly ideal) I did some testing and found it was only being done to video being encoded with av01.

The example video: https://www.youtube.com/watch?v=D8xIpI_5sJs

Here's the --list-formats output.

``` ────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── sb3 mhtml 48x27 0 │ mhtml │ images storyboard sb2 mhtml 80x45 0 │ mhtml │ images storyboard sb1 mhtml 160x90 0 │ mhtml │ images storyboard sb0 mhtml 320x180 0 │ mhtml │ images storyboard 249-drc webm audio only 2 │ 22.09MiB 51k https │ audio only opus 51k 48k [en] low, DRC, webm_dash 250-drc webm audio only 2 │ 28.83MiB 66k https │ audio only opus 66k 48k [en] low, DRC, webm_dash 249 webm audio only 2 │ 21.80MiB 50k https │ audio only opus 50k 48k [en] low, webm_dash 250 webm audio only 2 │ 28.66MiB 66k https │ audio only opus 66k 48k [en] low, webm_dash 140-drc m4a audio only 2 │ 56.27MiB 129k https │ audio only mp4a.40.2 129k 44k [en] medium, DRC, m4a_dash 251-drc webm audio only 2 │ 55.43MiB 128k https │ audio only opus 128k 48k [en] medium, DRC, webm_dash 140 m4a audio only 2 │ 56.27MiB 129k https │ audio only mp4a.40.2 129k 44k [en] medium, m4a_dash 251 webm audio only 2 │ 55.04MiB 127k https │ audio only opus 127k 48k [en] medium, webm_dash 160 mp4 256x144 30 │ 13.82MiB 32k https │ avc1.4d400c 32k video only 144p, mp4_dash 278 webm 256x144 30 │ 19.04MiB 44k https │ vp9 44k video only 144p, webm_dash 394 mp4 256x144 30 │ 16.95MiB 39k https │ av01.0.00M.08 39k video only 144p, mp4_dash 133 mp4 426x240 30 │ 27.09MiB 62k https │ avc1.4d4015 62k video only 240p, mp4_dash 242 webm 426x240 30 │ 30.51MiB 70k https │ vp9 70k video only 240p, webm_dash 395 mp4 426x240 30 │ 25.95MiB 60k https │ av01.0.00M.08 60k video only 240p, mp4_dash 134 mp4 640x360 30 │ 50.72MiB 117k https │ avc1.4d401e 117k video only 360p, mp4_dash 18 mp4 640x360 30 2 │ 141.13MiB 325k https │ avc1.42001E mp4a.40.2 44k [en] 360p 243 webm 640x360 30 │ 60.23MiB 139k https │ vp9 139k video only 360p, webm_dash 396 mp4 640x360 30 │ 50.17MiB 115k https │ av01.0.01M.08 115k video only 360p, mp4_dash 135 mp4 854x480 30 │ 80.20MiB 185k https │ avc1.4d401f 185k video only 480p, mp4_dash 244 webm 854x480 30 │ 92.71MiB 213k https │ vp9 213k video only 480p, webm_dash 397 mp4 854x480 30 │ 85.47MiB 197k https │ av01.0.04M.08 197k video only 480p, mp4_dash 136 mp4 1280x720 30 │ 216.68MiB 499k https │ avc1.4d401f 499k video only 720p, mp4_dash 247 webm 1280x720 30 │ 163.77MiB 377k https │ vp9 377k video only 720p, webm_dash 298 mp4 1280x720 60 │ 329.55MiB 758k https │ avc1.4d4020 758k video only 720p60, mp4_dash 302 webm 1280x720 60 │ 263.44MiB 606k https │ vp9 606k video only 720p60, webm_dash 398 mp4 1280x720 60 │ 217.19MiB 500k https │ av01.0.08M.08 500k video only 720p60, mp4_dash 299 mp4 1920x1080 60 │ 567.42MiB 1306k https │ avc1.64002a 1306k video only 1080p60, mp4_dash 303 webm 1920x1080 60 │ 472.64MiB 1087k https │ vp9 1087k video only 1080p60, webm_dash 399 mp4 1920x1080 60 │ 403.72MiB 929k https │ av01.0.09M.08 929k video only 1080p60, mp4_dash ```

Formats 395, 396, 397, 398, 399, and 788 had obvious evidence of AI sharpening, where everything else seemed untouched.

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**Low-power** commented Sep 3, 2025•

edited

Loading

Uh oh!

There was an error while loading. Please reload this page.

Copy link Copy Markdown

> Starting since May 2024, the **Format 17** and **Format 22** is removed for every YouTube videos uploaded.

From my experience, **Format 22** is still available until 2024-06-21, at least from the initial player response object of video pages (it got gradually removed from videos I checked that day).

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**MartinEesmaa** commented Sep 25, 2025

Copy link Copy Markdown

Author

Hi, @Low-power! Thanks for your claim experience of format 22. I will update it with your claim. Thanks! :)

Sorry for late response.

- Martin Eesmaa

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**jack980517** commented Sep 28, 2025

Copy link Copy Markdown

I found some other weird edge cases: sR0Yyjs26bE, KmAbbOPx46Y, and many other old videos on the same channel, only has webm for up to 360p, while mp4 is available for 720p and 1080p. This "breaks" your yt-dlp format selection string as it would prefer the 360p webm instead of the 720p/1080p mp4. I can't think of a good way to fix it though; handling such edge cases would probably require writing some Python code with if statements.

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**annie-things** commented Oct 24, 2025

Copy link Copy Markdown

thank you for keeping this updated

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**MartinEesmaa** commented Oct 27, 2025

Copy link Copy Markdown

Author

> thank you for keeping this updated

No problem! :)

- Martin Eesmaa

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**DianaNites** commented Nov 5, 2025

Copy link Copy Markdown

What do the parenthesis around certain formats mean? eg `(271)`

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**MartinEesmaa** commented Nov 5, 2025

Copy link Copy Markdown

Author

Hi, @DianaNites! For the parenthesis like `(271)` means that may be claimed by someone without video link, maybe it was old superseeded video format from YouTube or something else...

I honestly don't know yet, but I can add documentation about parenthesis formats meaning. Thanks! :)

- Martin Eesmaa

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**MartinEesmaa** commented Nov 11, 2025

Copy link Copy Markdown

Author

Hi, @jack980517! Sorry to forgot reply to you, my apologies! Anyways...

Some YouTube may not transcode for new formats to the same channel for some old videos or maybe the yt-dlp. I'm not kinda sure, but personally maybe YouTube doesn't transcode for not enough too new much views on old channel or other reasons. Thanks! :)

- Martin Eesmaa

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**MartinEesmaa** commented Nov 11, 2025

Copy link Copy Markdown

Author

Hi, @hunderslash! I think now YouTube started to use AI to upscale old videos into HD for enhancing.

Source: [https://www.forbes.com/sites/anishasircar/2025/11/05/youtube-deploys-ai-to-upscale-old-videos-for-tv-as-living-room-viewing-surges/](https://www.forbes.com/sites/anishasircar/2025/11/05/youtube-deploys-ai-to-upscale-old-videos-for-tv-as-living-room-viewing-surges/)

Some notes I want take note sometimes texts, faces, textures & others could make little bit mess from very lower quality (e.g. 144p) into higher resolutions (1080p/4K).

I will add notice about AI upscaling for the old videos into HD/4K used by YouTube... Thanks! :)

- Martin Eesmaa

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**BriellaBugs** commented Dec 11, 2025

Copy link Copy Markdown

AI Upscaled videos show "Super resolution" by the quality selection menu

 Can be seen here https://www.youtube.com/watch?v=LOY3QH_jOtE

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**MartinEesmaa** commented Dec 11, 2025

Copy link Copy Markdown

Author

Hello, @BriellaBugs! Thank you and yeah I can verify some old videos were upscaled using AI enhancing to make super resolution.

Also after the format number 248, adds end prefix `-sr`.

``` 244-sr webm 854x480 30 │ 286.37MiB 394k https │ vp9 394k video only 480p, AI-upscaled, webm_dash 397-sr mp4 854x480 30 │ 200.93MiB 276k https │ av01.0.04M.08 276k video only 480p, AI-upscaled, mp4_dash 247-sr webm 1280x720 30 │ 575.44MiB 791k https │ vp9 791k video only 720p, AI-upscaled, webm_dash 398-sr mp4 1280x720 30 │ 414.32MiB 570k https │ av01.0.05M.08 570k video only 720p, AI-upscaled, mp4_dash 248-sr webm 1920x1080 30 │ 1.06GiB 1490k https │ vp9 1490k video only 1080p, AI-upscaled, webm_dash 399-sr mp4 1920x1080 30 │ 794.61MiB 1092k https │ av01.0.08M.08 1092k video only 1080p, AI-upscaled, mp4_dash ```

I already made documentation just there about AI super resolution on DASH video section of this gist, but I will provide an example video. Thanks! :)

- Martin Eesmaa

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.


**AMTPROD** commented Dec 11, 2025 via email

Copy link Copy Markdown

I thought I noticed something ‘odd’ about watching some older videos! Makes sense that Youtube is utilizing Ai to increase resolution for people to watch on larger 4k screens. Sadly though, can they do the same for the audio resolution quality?! ~alan

…

On Dec 11, 2025, at 4:04 AM, Martin Eesmaa ***@***.***> wrote: @MartinEesmaa commented on this gist. Hello, @BriellaBugs<https://github.com/BriellaBugs>! Thank you and yeah I can verify some old videos were upscaled using AI enhancing to make super resolution. Also after the format number 248, adds end prefix -sr. 244-sr webm 854x480 30 │ 286.37MiB 394k https │ vp9 394k video only 480p, AI-upscaled, webm_dash 397-sr mp4 854x480 30 │ 200.93MiB 276k https │ av01.0.04M.08 276k video only 480p, AI-upscaled, mp4_dash 247-sr webm 1280x720 30 │ 575.44MiB 791k https │ vp9 791k video only 720p, AI-upscaled, webm_dash 398-sr mp4 1280x720 30 │ 414.32MiB 570k https │ av01.0.05M.08 570k video only 720p, AI-upscaled, mp4_dash 248-sr webm 1920x1080 30 │ 1.06GiB 1490k https │ vp9 1490k video only 1080p, AI-upscaled, webm_dash 399-sr mp4 1920x1080 30 │ 794.61MiB 1092k https │ av01.0.08M.08 1092k video only 1080p, AI-upscaled, mp4_dash I already made documentation just there about AI super resolution on DASH video section of this gist, but I will provide an example video. Thanks! :) Martin Eesmaa — Reply to this email directly, view it on GitHub <https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa#gistcomment-5900676> or unsubscribe <[https://github.com/notifications/unsubscribe-auth/BLJ7K6PHT6YXSZ22YMIEBBL4BFMV5BFHORZGSZ3HMVZKMY3SMVQXIZNMON2WE2TFMN2F65DZOBS2WR3JON2EG33NNVSW45FGORXXA2LDOOIYFJDUPFYGLJDHNFZXJJLWMFWHKZNJGEYTQNBQGA4TGM5KMF2HI4TJMJ2XIZLTSOBKK5TBNR2WLKBYHAYDGNJQGEY2I3TBNVS2QYLDORXXEX3JMSBKK5TBNR2WLJDUOJ2WLJDOMFWWLO3UNBZGKYLEL5YGC4TUNFRWS4DBNZ2F6YLDORUXM2LUPGBKK5TBNR2WLJDHNFZXJJDOMFWWLK3UNBZGKYLEL52HS4DF](https://github.com/notifications/unsubscribe-auth/BLJ7K6PHT6YXSZ22YMIEBBL4BFMV5BFHORZGSZ3HMVZKMY3SMVQXIZNMON2WE2TFMN2F65DZOBS2WR3JON2EG33NNVSW45FGORXXA2LDOOIYFJDUPFYGLJDHNFZXJJLWMFWHKZNJGEYTQNBQGA4TGM5KMF2HI4TJMJ2XIZLTSOBKK5TBNR2WLKBYHAYDGNJQGEY2I3TBNVS2QYLDORXXEX3JMSBKK5TBNR2WLJDUOJ2WLJDOMFWWLO3UNBZGKYLEL5YGC4TUNFRWS4DBNZ2F6YLDORUXM2LUPGBKK5TBNR2WLJDHNFZXJJDOMFWWLK3UNBZGKYLEL52HS4DF)>. You are receiving this email because you commented on the thread. Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <[https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub](https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub)>.

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.

[![Image 20: @gamer1