[mythtv-users] Status of ffmpeg 4.4.1

[John Pilkington]

On 03/11/2021 19:26, Peter Bennett wrote:
> Most things are working with ffmpeg 4.4.1 in the devel/ffmpeg-resync branch
> 
> What is not working:
> 
> - Audio "upconvert stereo to 5.1 sound" when playing a video with stereo 
> sound - error message and no audio playback .
> 
> - Speedup / slowdown when playing a video with dolby 5.1 audio - error 
> message and no audio playback .
> 
> - Report from John Pilkington that an existing bug with edit markers and 
> step lengths now reacts slightly differently - I don't know if it is 
> better or worse with the new ffmpeg.
> 
> I am looking into the 5.1 audio issues.
> 
> Peter

Hi Peter.  Thanks for your work on this.  It looks to me as if the 
resync is fine and the difference that I reported is a difference 
between the two ffmpeg versions.

I added another comment to issue 344 on finding that the cutlist editor 
problem with H.264 recordings goes away if I first process the file, 
without cuts, into the ffmpeg format that also worked with leanfront.  I 
don't know if that happens because of the non-AV streams that get 
removed, or because of the many complaints that ffprobe makes about the 
structure of the beginning of the raw recording file.

https://github.com/MythTV/mythtv/issues/344

I haven't noticed any problems in skipping during playback of the 
processed file.

I don't often make H.264 recordings, but I have another one scheduled to 
see how well I can internal cuts these days.

Thanks again,

John