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Old 15th January 2020, 21:14   #23721  |  Link
VictorLS
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Does ffmpeg (or any other audio decoder) support (play) Dolby AC-4 I've received from 19e2 SAT (German test UHD HLG channel)?
Full TS records by AltDVB, CrazyScan and PID_0x0201.bin and mpg's by TSReader (459MB total) https://transfiles.ru/ehlj6
Dolby AC-4 only audio must be in PID_0x0201.bin file.

Last edited by VictorLS; 15th January 2020 at 21:42.
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Old 16th January 2020, 02:46   #23722  |  Link
el Filou
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See this thread where nevcairiel said there was work in ffmpeg to implement it, but obviously with no idea of when it would be complete: https://forum.doom9.org/showthread.php?p=1863107
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Old 16th January 2020, 08:05   #23723  |  Link
v0lt
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Quote:
Originally Posted by VictorLS View Post
Does ffmpeg ... support (play) Dolby AC-4
No.
https://trac.ffmpeg.org/ticket/8349

Last edited by v0lt; 16th January 2020 at 08:13.
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Old 16th January 2020, 10:44   #23724  |  Link
VictorLS
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Thanks guys!
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Old 16th January 2020, 12:27   #23725  |  Link
richardpl
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My fork of FFmpeg plays ac4 just fine.
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Old 16th January 2020, 13:59   #23726  |  Link
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Interesting. Can you share any details (configuration, embedded libraries, required patches)?
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Old 16th January 2020, 18:07   #23727  |  Link
VictorLS
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Quote:
Originally Posted by richardpl View Post
My fork of FFmpeg plays ac4 just fine.
Even PID_0x0201.bin from https://transfiles.ru/ehlj6 ?
If so I ask you same questions as LigH
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Old 19th January 2020, 08:26   #23728  |  Link
VictorLS
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Quote:
Originally Posted by richardpl View Post
My fork of FFmpeg plays ac4 just fine.
Can you although upload (may be in PM) your compiled fork of FFmpeg to test AC4 streams by myself?
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Old 19th January 2020, 17:09   #23729  |  Link
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sample + CUVID + RGB32 output = bug
With madVR it crashes, with other renderers it just hangs on start.
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Old 19th January 2020, 20:35   #23730  |  Link
max79
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@nevcairiel
I humbly ask for help. Problem with "LAV Splitter Source", on HLS live streams it didn't output the highest possible by quality audio track for the specified language(please see "picture"). My settings was like this:
1) "Prefer Audio Stream with the Highest Quality": enabled
2) Preffered Language for Audio: rus

I try to check two TV-stream examples:
First have such audio streams:
1) Russian [rus] (stereo 192kb/s)
2) Russian [rus] (5.1, 384kb/s) [default]
Second have such audio streams:
1) Russian [rus] (5.1, 384kb/s)
2) Russian [rus] (stereo 192kb/s) [default]

Filter always output audio stream marked as [default] on both examples. Seems setting-"Prefer Audio Stream with the Highest Quality" just ignored in such cases. How can I configure filter for automatically choosing the best by quality track for the specified language: Second stream in first example and First stream in second example?
Any feedback would be appreciated.
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Old 19th January 2020, 20:48   #23731  |  Link
max79
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@nevcairiel
can you please tell me where I can find a list of actual parameters(with their detailed description) for the "LAV Splitter Source" for URLs, like this one:
http://ServerName/?overrun_nonfatal=1
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Old 20th January 2020, 00:06   #23732  |  Link
lvqcl
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Look here: http://ffmpeg.org/ffmpeg-protocols.html
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Old 20th January 2020, 00:18   #23733  |  Link
max79
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Quote:
Originally Posted by lvqcl View Post
thank you!
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Old 21st January 2020, 12:46   #23734  |  Link
bacondither
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@nevcairiel
When Git initializes the submodules for LAV Filters I get "fatal: remote error: access denied or repository not exported: /libudfread.git".
Seems like videolan moved it to GitLab.

Changing the libbluray .gitmodules URL to new url would fix it.
Code:
https://code.videolan.org/videolan/libudfread.git
Keep on rocking!
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Old 22nd January 2020, 11:52   #23735  |  Link
sat4all
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@nevcairiel
As you know, most if not all bollywood movies use a sample rate of 96000hz for dolby truehd tracks, using lav audio decoder it produces stuttering/crackling but with other players like mpv, dvdfab, kodi it plays fine.
Would please check, let me know if you need a sample.
p.s: i'm using passthrough.

Thanks
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Old 22nd January 2020, 13:05   #23736  |  Link
VictorLS
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Can LAV Filters process MPEG-7 transmitted from German 19e2 satellite? If yes, what version from?
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Old 22nd January 2020, 17:48   #23737  |  Link
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Quote:
Originally Posted by max79 View Post
@nevcairiel
Filter always output audio stream marked as [default] on both examples. Seems setting-"Prefer Audio Stream with the Highest Quality" just ignored in such cases. How can I configure filter for automatically choosing the best by quality track for the specified language: Second stream in first example and First stream in second example?
I'm noticed that after recording such TV-stream in .TS-file container, filter didn't see [default] mark in this case and and automatically choose the best by quality track. Please fix.
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Old 22nd January 2020, 18:17   #23738  |  Link
VictorLS
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Quote:
Originally Posted by VictorLS View Post
MPEG-7 transmitted from German 19e2 satellite
Here's my record of that stream 19e2_12670v23500mis171continuousMPEG-7_20200122.ts (18 MB) https://yadi.sk/d/734HyAxzWVrkCg but I guess that's really broken stream and will be happy if I'm wrong in that assumption
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Old 23rd January 2020, 07:37   #23739  |  Link
max79
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Quote:
Originally Posted by lvqcl View Post
The question still remains - will these parameters work in "LAV Splitter Source"(at the end of URL) or not? Seems at least "user_agent"-parameter didn't work as it should if running URL like this:
http://ServerName/?user_agent=Mozilla
Does any guys in charge here to explain whether this parameter should work in DirectShow player through the filter?

Last edited by max79; 23rd January 2020 at 15:28.
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Old 29th January 2020, 23:01   #23740  |  Link
el Filou
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Quote:
Originally Posted by VictorLS View Post
Can you although upload (may be in PM) your compiled fork of FFmpeg to test AC4 streams by myself?
If I'm not mistaken, richarpl is an ffmpeg dev. He probably has a private branch with added AC-4 support but support still not 100% ready for release?
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