Thanks. I know the delay because the module that produced the video can report the delay. In some cases I'll use a human (maybe with vlc player that has a compensation feature)
Can I please ask you for a direction on how to rewrite pts? can I use ffmpeg to do that? Thanks Eli On Fri, Dec 17, 2010 at 12:38 AM, Pushkar Pradhan <[email protected] > wrote: > On Thu, Dec 16, 2010 at 9:44 AM, Eli Konky <[email protected]> wrote: > > > Hi, > > > > I have an mp4 (h.264, aac) file where the audio is lagging behind the > > video. > > > > Is it possible to fix this file by just rewriting pts somehow, without > > decoding and re-encoding the entire file? > > Is there any other way to deal with this? > > > > Thanks > > Eli > > _______________________________________________ > > libav-user mailing list > > [email protected] > > https://lists.mplayerhq.hu/mailman/listinfo/libav-user > > > > You can rewrite the pts without doing any decoding/encoding. But how do you > know what is the correct adjustment? You can do trial and error, e.g. add > +50 msec, 100 msec and check the result visually. But what if the lag is > varying over time? > > -- > pushkar > _______________________________________________ > libav-user mailing list > [email protected] > https://lists.mplayerhq.hu/mailman/listinfo/libav-user > _______________________________________________ libav-user mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/libav-user
