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I forgot to mention that I have set hwdec=videotoolbox already, but vp9 and av01 from youtube don't get hw-decoded anyway. > This is true for Homebrew formula

by def- 5y ago

I forgot to mention that I have set hwdec=videotoolbox already, but vp9 and av01 from youtube don't get hw-decoded anyway. > This is true for Homebrew formula as well, like the mpv formula, just not Homebrew casks. Most casks are proprietary closed source applications. But even open source casks seem to be taken centrally instead of built again. My guess is that this is to keep the original developers' certificates.

varenc 5y ago
Thanks for the reply! Also wow I hadn't realize that Apple supports hardware decoding of Google's VP9 codec. Googling a bit, it looks like this is new in the M1 Macs. Though not sure if it supports AV01 yet? When I browse Youtube in Firefox I seem to get AV01 encoded videos. Are you sure Firefox on an M1 Mac is using hardware decoding? I wonder if they might just be using an optimized software decoder. Wish I had an M1 mac to test! Frustratingly I couldn't find any description of videotoolbox codec support on Apple's documentation, though I did find that this VP9 constant exists: https://developer.apple.com/documentation/coremedia/kcmvideocodectype_vp9 https://developer.apple.com/documentation/coremedia/kcmvideo... (but couldn't find an AV01 constant) Re: Casks, I hadn't thought about it but you're totally right that this is probably mostly due to macOS developer signing issues.
- def- 5y ago
  I get VP9 videos in Firefox apparently, probably depends on the video and your youtube settings: Running MOZ_LOG="PlatformDecoderModule:5" firefox shows that VP9 works: [RDD 15027: MediaSupervisor #1]: D/PlatformDecoderModule AppleVTDecoder[102edcfa0] Creating AppleVTDecoder for 3840x1920 VP9 video [Child 15023: MediaPDecoder #1]: D/PlatformDecoderModule AudioTrimmer[11fec72e0] ::PrepareTrimmers: sample[0,21000] no trimming information [RDD 15027: MediaPDecoder #2]: D/PlatformDecoderModule OpusDataDecoder[102ef4040] ::Decode: Opus decoder skipping 312 of 960 frames [Child 15023: MediaPDecoder #2]: D/PlatformDecoderModule AudioTrimmer[11fec72e0] ::HandleDecodedResult: sample[0,21000] (decoded[0,13500] no trimming needed [RDD 15027: MediaPDecoder #1]: D/PlatformDecoderModule AppleVTDecoder[102edcfa0] AppleVTDecoder: using hardware accelerated decoding AV1 hw decoding on M1 Pro indeed is not supported even in Firefox.

by def- 5y ago

varenc 5y ago

Thanks for the reply! Also wow I hadn't realize that Apple supports hardware decoding of Google's VP9 codec. Googling a bit, it looks like this is new in the M1 Macs. Though not sure if it supports AV01 yet? When I browse Youtube in Firefox I seem to get AV01 encoded videos. Are you sure Firefox on an M1 Mac is using hardware decoding? I wonder if they might just be using an optimized software decoder. Wish I had an M1 mac to test! Frustratingly I couldn't find any description of videotoolbox codec support on Apple's documentation, though I did find that this VP9 constant exists: https://developer.apple.com/documentation/coremedia/kcmvideocodectype_vp9 https://developer.apple.com/documentation/coremedia/kcmvideo... (but couldn't find an AV01 constant) Re: Casks, I hadn't thought about it but you're totally right that this is probably mostly due to macOS developer signing issues.

def- 5y ago
I get VP9 videos in Firefox apparently, probably depends on the video and your youtube settings: Running MOZ_LOG="PlatformDecoderModule:5" firefox shows that VP9 works: [RDD 15027: MediaSupervisor #1]: D/PlatformDecoderModule AppleVTDecoder[102edcfa0] Creating AppleVTDecoder for 3840x1920 VP9 video [Child 15023: MediaPDecoder #1]: D/PlatformDecoderModule AudioTrimmer[11fec72e0] ::PrepareTrimmers: sample[0,21000] no trimming information [RDD 15027: MediaPDecoder #2]: D/PlatformDecoderModule OpusDataDecoder[102ef4040] ::Decode: Opus decoder skipping 312 of 960 frames [Child 15023: MediaPDecoder #2]: D/PlatformDecoderModule AudioTrimmer[11fec72e0] ::HandleDecodedResult: sample[0,21000] (decoded[0,13500] no trimming needed [RDD 15027: MediaPDecoder #1]: D/PlatformDecoderModule AppleVTDecoder[102edcfa0] AppleVTDecoder: using hardware accelerated decoding AV1 hw decoding on M1 Pro indeed is not supported even in Firefox.