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Old 22nd October 2021, 01:36   #21  |  Link
quietvoid
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Well this is unfortunate. The decoder in the FireTV Stick 4K Max is not applying film grain on playback.
Has anyone checked if others supporting the Main profile do apply it?
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Old 22nd October 2021, 04:21   #22  |  Link
benwaggoner
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Originally Posted by quietvoid View Post
Well this is unfortunate. The decoder in the FireTV Stick 4K Max is not applying film grain on playback.
Has anyone checked if others supporting the Main profile do apply it?
It's not applying the FGS filter, even though the AV1 bitstream is flagged with it?

If you can get me a repro file, I can get someone to take a look.
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Old 22nd October 2021, 11:11   #23  |  Link
hajj_3
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Amlogic A311D2 supports 8K AV1 @24p/4K 60p: https://www.cnx-software.com/2021/10...ssor-16gb-ram/
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Old 22nd October 2021, 13:17   #24  |  Link
quietvoid
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Originally Posted by benwaggoner View Post
It's not applying the FGS filter, even though the AV1 bitstream is flagged with it?

If you can get me a repro file, I can get someone to take a look.
Yes that's right. I tested it with a libaom encoded file that has film grain params in the stream, but there is only one set that is repeated for all the frames.

You can find the file here: https://mega.nz/file/wR0AmY7K#eG3IIc...gBOAcLEeVfJwh0

I've played it with both Kodi and https://github.com/moneytoo/Player, both of which use the hardware decoder (JustPlayer uses ExoPlayer) and result in no grain application.
While mpv for Android is in software and applies the grain.

I'll have to test with a complete grain table to see if it makes a difference.
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Last edited by quietvoid; 23rd October 2021 at 14:12.
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Old 27th October 2021, 01:54   #25  |  Link
benwaggoner
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Originally Posted by quietvoid View Post
Yes that's right. I tested it with a libaom encoded file that has film grain params in the stream, but there is only one set that is repeated for all the frames.

You can find the file here: https://mega.nz/file/wR0AmY7K#eG3IIc...gBOAcLEeVfJwh0

I've played it with both Kodi and https://github.com/moneytoo/Player, both of which use the hardware decoder (JustPlayer uses ExoPlayer) and result in no grain application.
While mpv for Android is in software and applies the grain.

I'll have to test with a complete grain table to see if it makes a difference.
Thank you. It is being investigated. There was a Broadcom SDK issue (I believe fixed in the latest updates) that I know impacted some AV1 FGS decode, so it might be related to that.
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Old 27th October 2021, 03:12   #26  |  Link
soresu
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Originally Posted by hajj_3 View Post
Amlogic A311D2 supports 8K AV1 @24p/4K 60p: https://www.cnx-software.com/2021/10...ssor-16gb-ram/
If you read the article fully it mentions that 8K video output is not supported despite being able to decode video at that resolution.

Apparently 8K output is expected on the long awaited S908X which may be a bit beefier with A76/A55 cores instead vs A311D2's A73/A53 core configuration.
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Old 28th October 2021, 08:27   #27  |  Link
olduser217
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Fire TV Stick 4K Max uses Broadcom SoC?
According to Wikipedia, its CPU is Mediatek MT8696.

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Thank you. It is being investigated. There was a Broadcom SDK issue (I believe fixed in the latest updates) that I know impacted some AV1 FGS decode, so it might be related to that.
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Old 28th October 2021, 14:27   #28  |  Link
quietvoid
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I'm pretty sure it's Mediatek, all the MediaCodec decoders advertised are MTK.
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Old 29th October 2021, 18:21   #29  |  Link
benwaggoner
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Originally Posted by soresu View Post
If you read the article fully it mentions that 8K video output is not supported despite being able to decode video at that resolution.

Apparently 8K output is expected on the long awaited S908X which may be a bit beefier with A76/A55 cores instead vs A311D2's A73/A53 core configuration.
FWIW, it's not like 8K video is happening any year soon (no evidence yet that humans can see any difference between 4K and 8K in moving picture content). And 8K TVs typically have very advanced upsamplers in them, so it's probably better to feed native 4K to them and let the TV take it up to 8K.
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