[FFmpeg-user] Warning "Starting new cluster due to timestamp" on muxing two input streams and resulting movie with muted audio at some locations

[Georgi D. Sotirov]

Anyone? Meanwhile I've done the muxing with mkvmerge from MKVToolNix 
<https://mkvtoolnix.download/> package without any problem and muxed 
other movies with FFmpeg successfully.


Regards,
--
Georgi D. Sotirov

On 17/04/2017 at 12:23, Georgi D. Sotirov wrote:
> Hello,
>
> I'm having the warning "/Starting new cluster due to timestamp/" when 
> trying to mux the video and the audio from two (matroska) input 
> streams by just copying the video from the first and the audio from 
> the second them (i.e. without re-encoding). The resulting movie is 
> scrambled - the video is OK, but the audio is inconsistent - it's 
> muted in random locations. It's the same problem explained here 
> <http://ffmpeg.gusari.org/viewtopic.php?f=11&t=2713> and I reproduce 
> it with Sintel movie <https://durian.blender.org/download/> as given 
> in the example. The strange is that I've done the same operation many 
> times in the past and I'm not sure why I have this warning just now as 
> in the source it seem to have been introduced almost 3 years ago (see 
> commit 7923aa0fba6b7b55ebbe1af8b7620060f36a1133 
> <https://github.com/FFmpeg/FFmpeg/commit/7923aa0fba6b7b55ebbe1af8b7620060f36a1133>). 
> Thus, I normally receive the same warning with newly released FFmpeg 
> 3.3 as well as with previous 3.2.4 version.
>
> So is there any way to solve this problem, avoid the warning and 
> produce movie without muted sound?
>
>
> Best regards,
> -- 
> Georgi D. Sotirov
>