[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]

Hello,

Yes, it should be something like this, but I'm not able to reproduce the 
warning anymore, so I won't dig further unless it appears again.


Regards,

On 24.4.2017 at 14:12, Cley Faye wrote:
> 2017-04-24 11:22 GMT+02:00 Georgi D. Sotirov <gdsotirov at dir.bg>:
>
>> What is the general reason for warning "Starting new cluster due to
>> timestamp" to appear anyway?
>
> ​I'm not sure of the exact cause of this warning by ffmpeg, but if the
> actual message is to be trusted (usually it is), it could be an
> inconsistency in timestamps. Clusters are kind of an MKV "unit" that
> contain the actual audio/video data (the frames). If there is a hole in the
> timestamps, or if they are out of order, the muxer might create a new
> cluster to accomodate this.​
> ​
> ​Since it only happen on the audio, you might want to check that the audio
> stream itself is well formed, and also check the output file with some
> other player (try ffplay)​
> ​
> ​. Other than that, a greater ffmpeg "guru" will have to step in ;)​
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