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Old 21st November 2020, 13:26   #24141  |  Link
VictorLS
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Quote:
Originally Posted by el Filou View Post
Any support for new formats is always nice
I agree and I hope this document https://developer.dolby.com/globalas...escription.pdf with patch https://patchwork.ffmpeg.org/project...ier@cji.paris/ will help to implement full Dolby E support in LAV Audio Decoder and it'll be very useful for SAT receiving.
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Old 3rd December 2020, 17:43   #24142  |  Link
nevcairiel
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Originally Posted by quietvoid View Post
Hi nevcairiel.
With the new Matroska spec (though it's not implemented in FFmpeg, the code from Plex's patches is available), Dolby Vision metadata can be inserted and decoded from MKV headers.
Would it be possible to parse the HEVC RPU NAL units and make that information available to the renderer (for example, madVR) through the LAV decoder?
HW acceleration might cause issues, though.

I have working code to parse this RPU data (at least for profile 7 files), but I'm not sure if it's feasible for that metadata to be useful.
I think it would be nice if the renderer could have access to pre defined per-frame information about min, max, average luminance and etc.

Just wondering if it's something that would be possible, because I'd be interested in helping to add support.
I wouldn't mind supporting that, but getting a renderer to support it is the bigger problem here, as madVR seems to be stuck.
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Old 3rd December 2020, 18:04   #24143  |  Link
SamuriHL
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Which is a shame because everything else is in place to play them. It would be really nice to have that support on a PC.
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Old 4th December 2020, 18:54   #24144  |  Link
JarrettH
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Will there be further updates?
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Old 4th December 2020, 19:28   #24145  |  Link
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See here for the most up-to-date builds: https://files.1f0.de/lavf/nightly/?C=M;O=A

Here for commit/change log: https://github.com/Nevcairiel/LAVFilters/commits/master
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Old 4th December 2020, 20:07   #24146  |  Link
quietvoid
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Yea I think getting madshi to add support would be complicated.
Though NVIDIA seems to have APIs to enable the Dolby Vision playback chain on a display, no idea how the data is actually sent through.
It might just be the whole RPU, since the decoder is expected to verify the integrity of it.

I didn't really think this through.. maybe once people start sending patches to ffmpeg, as it appears Plex's code is incomplete.

Last edited by quietvoid; 4th December 2020 at 20:10.
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Old 5th December 2020, 06:27   #24147  |  Link
vosya
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In version LAVFilters-0.74.1-91, LAV Splitter has stopped detecting the presence of an audio stream with the following characteristics in m2ts, mkv video containers (possibly in others):
Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : PCM
Format settings : Big / Signed
Muxing mode : Blu-ray
Codec ID : 128
Duration : 29 min 9 s
Bit rate mode : Constant
Bit rate : 2 304 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Bit depth : 24 bits
In version LAVFilters-0.74.1-90, such streams are recognized normally.
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Old 5th December 2020, 11:18   #24148  |  Link
nevcairiel
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Quote:
Originally Posted by vosya View Post
In version LAVFilters-0.74.1-91, LAV Splitter has stopped detecting the presence of an audio stream with the following characteristics in m2ts, mkv video containers (possibly in others):
Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : PCM
Format settings : Big / Signed
Muxing mode : Blu-ray
Codec ID : 128
Duration : 29 min 9 s
Bit rate mode : Constant
Bit rate : 2 304 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Bit depth : 24 bits
In version LAVFilters-0.74.1-90, such streams are recognized normally.
Will be fixed soon, thanks!
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Old 7th December 2020, 17:24   #24149  |  Link
Brazil2
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Quote:
Originally Posted by nevcairiel View Post
LAV Filters 0.74.1 (released 2019/03/19)
Please, make a new release.
Many people don't like to use beta versions and many sites won't spread beta versions as well.
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Old 8th December 2020, 07:01   #24150  |  Link
ryrynz
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Quote:
Originally Posted by Brazil2 View Post
Please, make a new release.
Just a wild guess here but I expect Nev would've released something this month if not early next anyway..
Nothing is stopping anyone using nightlies until then as these releases are essentially ongoing stable builds, a release build for LAV is no different from the nightlies other than in name.
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Old 8th December 2020, 08:37   #24151  |  Link
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nevcairiel thinks otherwise...
https://forum.doom9.org/showthread.p...08#post1833908
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Old 8th December 2020, 12:07   #24152  |  Link
ryrynz
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Bruh, that was 2018, things have changed :P
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Old 8th December 2020, 13:41   #24153  |  Link
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There have been quite a lot of changes recently so I would assume you have to wait a bit for a release just to make sure everytrhing is OK. Wasn't there issues with hardware AV1 decode for instance?
Not useful to make a release if you've got to provide a hotfix quickly afterwards.
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Old 8th December 2020, 23:46   #24154  |  Link
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This 1440p VP9 Profile2 stream has massive frames drops with CUVID decoding. DXVA2 works fine.
https://www.youtube.com/watch?v=n3Dru5y3ROc
Played in MPC-HC with youtube-dl
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Old 9th December 2020, 10:24   #24155  |  Link
nevcairiel
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As i've stated recently, I plan to make a release when AV1 is done and some additional fixes are in.

Quote:
Originally Posted by clsid View Post
This 1440p VP9 Profile2 stream has massive frames drops with CUVID decoding. DXVA2 works fine.
https://www.youtube.com/watch?v=n3Dru5y3ROc
Played in MPC-HC with youtube-dl
CUVID is not currently being developed further.
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Old 9th December 2020, 14:23   #24156  |  Link
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May I suggest that you finally remove the obsolete and outdated QuickSync in upcoming release? And migrate existing setting to DXVA2 copyback.
And move CUVID to bottom of the dropdown list and maybe rename it to "CUVID (deprecated)". By not having the vendor name in front of the option should make some people less tempted to select the inferior choices.
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Old 9th December 2020, 16:24   #24157  |  Link
huhn
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yeah for some reason people like to say i selected cuvid because i have a nvidia card.
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Old 9th December 2020, 19:45   #24158  |  Link
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@clsid - Since you're here, did you recently increase the default built-in LAV stream analysis duration from 1000 to 2100? I only found this, because MPC-HC did a full reset for some reason, and that particular setting seems to have fixed my lossless audio dropouts on resume
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Old 9th December 2020, 21:17   #24159  |  Link
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Yes, that fixes several (audio) issues. So maybe nev can change the default in the official builds as well.
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Old 9th December 2020, 23:44   #24160  |  Link
nevcairiel
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The only thing that option is supposed to affect is detecting of streams in header-less containers. If it has any impact on actual playback, please give me a case to reproduce.
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