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Old 23rd August 2023, 01:17   #25021  |  Link
ashlar42
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Originally Posted by nevcairiel View Post
There is a known issue with high-bitrate Atmos tracks that I haven't gotten around to addressing quite yet. Hopefully soon.
Thanks for your reply. Much appreciated.
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Old 23rd August 2023, 14:39   #25022  |  Link
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Originally Posted by nevcairiel View Post
There is a known issue with high-bitrate Atmos tracks that I haven't gotten around to addressing quite yet. Hopefully soon.
Just to be sure that we are talking about the same issue:

My problem does not lead to any audio dropouts. Audio is perfect, it's just frames that are getting dropped or repeated in madVR.
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Old 26th August 2023, 07:00   #25023  |  Link
htnut
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Originally Posted by nevcairiel View Post
There is a known issue with high-bitrate Atmos tracks that I haven't gotten around to addressing quite yet. Hopefully soon.
When this issue is solved do you think it may solve the DirectSound bitstreaming audio dropouts w/ momentary video glitch that I reported on the JRiver forum?
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Old 26th August 2023, 08:18   #25024  |  Link
nevcairiel
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No. Not every issue is related.
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Old 26th August 2023, 16:23   #25025  |  Link
ashlar42
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Originally Posted by nevcairiel View Post
No. Not every issue is related.
Hi! Could you let me know if the issue I reported is the one you mentioned as being likely solvable through LAV Filters? From your wording I am not sure I understood things correctly. Sorry...

I am experiencing dropped/repeated frames in madVR but no audio dropouts or anything. Audio remains perfect throughout playback.
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Old 30th August 2023, 06:38   #25026  |  Link
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Hi all, new to the forum and new to this in general. I was curious as to if LAV filters are able to handle and decode 4ch audio video files within Windows and what is needed to playback those types of files if I have my audio card in windows set to "quadraphonic" I'm trying to replicate a video player like Playback pro, where if I put a Mac OS in quadraphonic. then it can actually read all 4channels of the video files and send them discretely to the quadraphonic outputs of my audio interface. I coudn't find any settings within the LAV filter GUI to make it work. Though i'm not sure if the player software may need some tweaking as well.

Last edited by pcamino; 30th August 2023 at 06:40.
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Old 30th August 2023, 13:04   #25027  |  Link
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Hi all, new to the forum and new to this in general.
Welcome to the Doom9 forum.
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I was curious as to if LAV filters are able to handle and decode 4ch audio video files within Windows...
No problem, in Windows I can recommend you software players like MPC-HC or BE with LAV filters included. Also VLC can be used.
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Old 30th August 2023, 19:17   #25028  |  Link
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There is a known issue with high-bitrate Atmos tracks that I haven't gotten around to addressing quite yet. Hopefully soon.
Samples?
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Old 30th August 2023, 23:16   #25029  |  Link
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Samples?
The new Avatar remuxed, for instance. But it's not just that... even the old Avatar in UHD suffers from the same problem.
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Old 31st August 2023, 22:16   #25030  |  Link
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Just wanted to add that with mpc-be, using internal filters (hence not LAV), frames are not repeated/dropped with madVR. With the Atmos titles, I mean.
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Old 1st September 2023, 16:56   #25031  |  Link
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The new Avatar remuxed, for instance. But it's not just that... even the old Avatar in UHD suffers from the same problem.
Can you give a file? I will test on my LG C9. Because all other genius players are hardly reference.
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Old 1st September 2023, 22:06   #25032  |  Link
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Can you give a file? I will test on my LG C9. Because all other genius players are hardly reference.
Not sure what copyright limitations allow me to do. If a small segment would be ok, how small, etc.
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Old 1st September 2023, 22:11   #25033  |  Link
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Not sure what copyright limitations allow me to do. If a small segment would be ok, how small, etc.
Small that allows to reproduce falls under the fair use.
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Old 7th September 2023, 05:01   #25034  |  Link
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Originally Posted by tebasuna51 View Post
Welcome to the Doom9 forum.


No problem, in Windows I can recommend you software players like MPC-HC or BE with LAV filters included. Also VLC can be used.
Thanks @tebasuna51, but wanted to build custom software to use as a player, just need to figure out code to be able to do the 4ch decode thing.
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Old 7th September 2023, 10:27   #25035  |  Link
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... but wanted to build custom software to use as a player, just need to figure out code to be able to do the 4ch decode thing.
You can use the LAV filters, after solved some problems/bugs in past year, can decode and output correct multichannel audio with any kind of channel configuration.

Before that the LAV filters apply a default :
{4, SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY},

always for 4 channels, now preserve the channel mask from the source and can output quadraphonic audio (FL,FR,SL,SR) to your player.
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Old 7th September 2023, 11:41   #25036  |  Link
nevcairiel
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There is a known issue with high-bitrate Atmos tracks that I haven't gotten around to addressing quite yet. Hopefully soon.
I've applied a fix for this, give the latest test build a try from here:
https://files.1f0.de/lavf/nightly/LA...s-0.77.2-3.exe
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Old 9th September 2023, 07:40   #25037  |  Link
htnut
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Originally Posted by nevcairiel View Post
I've applied a fix for this, give the latest test build a try from here:
https://files.1f0.de/lavf/nightly/LA...s-0.77.2-3.exe
Will the associated fix be included in a JRiver MC31 build?
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Old 11th September 2023, 00:24   #25038  |  Link
ashlar42
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Originally Posted by nevcairiel View Post
I've applied a fix for this, give the latest test build a try from here:
https://files.1f0.de/lavf/nightly/LA...s-0.77.2-3.exe
Preliminary results seem good. Probably better than MPC-BE Audio filter that I was using "ad interim".

Avatar The Way of Water remux played for one and a half hour without drops/repeats. This is far, far better than before. I left the movie playing and after another 30 minutes or so I found 3 frames dropped (or repeated, I don't remember). In the next few days I will experiment some more to see whether that can be replicated or if it was a one-off glitch (I try to keep my HTPC Windows 10 install lean but it's not *completely* dedicated).

Refresh rate should not be the culprit, as that indicates frames dropped/repeated after a couple of days.

In any case this is a clear step forward, of this I'm sure. Thanks a lot.

I actually would like to know if there's a way in madVR to activate a log, in order to have a reference to when, during playback, frames have been dropped/repeated. I like Avatar but I can't watch it ten times...
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Old 13th September 2023, 01:59   #25039  |  Link
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debug tracks pretty much everything.

they are very hard to read and have an absolute insane size.
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Old 19th September 2023, 07:46   #25040  |  Link
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@nevcairiel
Please update FFmpeg. The developers recently eliminated a very unpleasant noise when playing APE 24-bit files.
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