[FFmpeg-devel] PCR sync is required for audio-video sync ?

Kieran Kunhya kierank at obe.tv
Tue Sep 1 20:18:13 CEST 2015

On 1 September 2015 at 18:21, Ran Shalit <ranshalit at gmail.com> wrote:
> Hello,
> I would like to ask , if someone from experience can say if PCR sync
> between encoder and decoder is required for ts streaming, when it
> required to acheive audio-video sync ?
> I ask the question becuase I've noticed that some ts samples I am
> using are played perfectly with VLC, even though there is no usage of
> PCR sync (I see in wireshark that PCR flag is always 0).

Most definitely yes. But VLC has to deal with files from such broken
muxes that (somewhat miraculously) it ignores PCR and generates it's


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