On the Road to WebRTC 1.0, Including VP8

Re:On the Road to WebRTC 1.0, Including VP8 by ihuman on Tuesday March 12, 2019 @03:44PM (#19372159)

VP8 can only be contained in MKVs and WebMs files, so I do see this happening. Apple is also part of the consortium working on AV1, the successor to VP8 and VP9; it also uses the MKV and WEBM containers.

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Re:On the Road to WebRTC 1.0, Including VP8 by twotwotwo on Wednesday March 13, 2019 @01:10AM (#19375912)

The AOM membership and the VP8 support may even be related. If Apple's assuming risk from submarine patents, etc. inherent in shipping an AV1 implementation, VP8 is something like a subset of it, so they can get that "for free".

The post talks about how iPhone 7's have worse battery life with VP8, which I'm sure is true, but it's still kinda funny because...it's Apple quasi-complaining here, and Apple who can solve the lack of acceleration, at least for future products.

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Re:On the Road to WebRTC 1.0, Including VP8 by xenadu02 on Wednesday March 13, 2019 @01:04AM (#19375886)

VP8 is power hungry and GPUs don't have hardware support for decoding it.

Do you really want way worse battery life just so you can have VP8? That seems to be prioritizing the wrong things.

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Re:On the Road to WebRTC 1.0, Including VP8 by morganw on Tuesday March 12, 2019 @05:05PM (#19373015)

"uses the MKV and WEBM containers"

Maybe, but not exclusively

VP9: https://www.webmproject.org/vp9/mp4/ (uses 'vp09' & 'vpcC' in the stsd)

AV1: https://aomedia.org/wp-content/uploads/2018/09/AV1-ISO-Base-... (uses 'av01' & 'av1C' in the stsd)

YouTube's AV1 playlist https://www.youtube.com/watch?v=2nXYbGmF3_Q&list=PLyqf6gJt7K...

uses mp4 as the container for the av1 (av01.0.05M.08), webm for the VP9 (vp9)

  ./youtube-dl --list-formats https://www.youtube.com/watch?v=2nXYbGmF3_Q
    [youtube] 2nXYbGmF3_Q: Downloading webpage
    [youtube] 2nXYbGmF3_Q: Downloading video info webpage
    [info] Available formats for 2nXYbGmF3_Q:
    format code  extension  resolution note
    249          webm       audio only DASH audio   55k , opus @ 50k, 1.43MiB
    250          webm       audio only DASH audio   70k , opus @ 70k, 1.81MiB
    171          webm       audio only DASH audio  118k , vorbis@128k, 2.99MiB
    140          m4a        audio only DASH audio  128k , m4a_dash container, mp4a.40.2@128k, 3.65MiB
    251          webm       audio only DASH audio  133k , opus @160k, 3.38MiB
    278          webm       256x144    144p  101k , webm container, vp9, 30fps, video only, 2.57MiB
    160          mp4        256x144    144p  109k , avc1.4d400c, 30fps, video only, 1.02MiB
    242          webm       426x240    240p  205k , vp9, 30fps, video only, 2.81MiB
    133          mp4        426x240    240p  241k , avc1.4d4015, 30fps, video only, 2.27MiB
    243          webm       640x360    360p  377k , vp9, 30fps, video only, 5.08MiB
    395          mp4        426x240    240p  426k , av01.0.05M.08, 30fps, video only, 3.33MiB
    134          mp4        640x360    360p  514k , avc1.4d401e, 30fps, video only, 4.66MiB
    244          webm       854x480    480p  696k , vp9, 30fps, video only, 8.29MiB
    396          mp4        640x360    360p  751k , av01.0.05M.08, 30fps, video only, 6.04MiB
    135          mp4        854x480    480p  989k , avc1.4d401f, 30fps, video only, 8.54MiB
    397          mp4        854x480    480p 1175k , av01.0.05M.08, 30fps, video only, 9.86MiB
    247          webm       1280x720   720p 1282k , vp9, 30fps, video only, 12.27MiB
    136          mp4        1280x720   720p 1675k , avc1.4d401f, 30fps, video only, 14.43MiB
    398          mp4        1280x720   720p 2075k , av01.0.05M.08, 30fps, video only, 18.99MiB
    248          webm       1920x1080  1080p 2349k , vp9, 30fps, video only, 20.93MiB
    137          mp4        1920x1080  1080p 2768k , avc1.640028, 30fps, video only, 23.33MiB
    399          mp4        1920x1080  1080p 3759k , av01.0.05M.08, 30fps, video only, 39.32MiB
    18           mp4        640x360    medium , avc1.42001E, mp4a.40.2@ 96k, 11.11MiB
    43           webm       640x360    medium , vp8.0, vorbis@128k, 16.66MiB
    22           mp4        1280x720   hd720 , avc1.64001F, mp4a.40.2@192k (best)

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Re:On the Road to WebRTC 1.0, Including VP8 by ihuman on Tuesday March 12, 2019 @05:51PM (#19373422)

AVC1 is just H264[0]. FFmpeg says stream 0 is "Video: h264"

The page you linked about AV1 in mp4 says it uses MPEG-4 Part 31, which is under development and not final [1]. Until now I was not aware they were extending the MPEG-4 container standard to include more formats.

[0] https://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Naming

[1] https://www.iso.org/standard/66062.html

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Re:On the Road to WebRTC 1.0, Including VP8 by TD-Linux on Tuesday March 12, 2019 @06:07PM (#19373555)

The GP shows both avc1 and av01, the latter of which is AV1.

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Re:On the Road to WebRTC 1.0, Including VP8 by ihuman on Tuesday March 12, 2019 @06:13PM (#19373605)

Yes. The post also said avc1 and av01 are both av1, when just av01 is av1.

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Re:On the Road to WebRTC 1.0, Including VP8 by brigade on Wednesday March 13, 2019 @12:14AM (#19375668)

I think you misread av1C (av1's equivalent of avcC) as avc1

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