Thanks Francois. I will demux programatically and see if both file contents are same/similar.
But what is surprising me, the remuxed file I can play in Chrome browser but not in Mozilla. I can play the remuxed file in avplay as well. Shall I assume my remuxed file is fine as I am able to play it with avplay and chrome browser. Or Shall I assume my remuxed file is corrupted one as I can not play it in mozilla browser. Many thanks. Austin On Fri, Jul 3, 2015 at 1:29 PM, Francois Visagie <francois.visa...@gmail.com > wrote: > > -----Original Message----- > > From: ffmpeg-user-boun...@ffmpeg.org [mailto:ffmpeg-user- > > boun...@ffmpeg.org] On Behalf Of Austin Einter > > Sent: 03 July 2015 00:54 > > To: ffmpeg-user@ffmpeg.org > > Subject: Re: [FFmpeg-user] Remux doubts > > > > Can somebody pls clarify.., I observed the remuxed file is less by 17 > bytes. > > That does not necessarily indicate a problem, but rather more likely the > fact that the new container has slightly different metadata. > > You could demux both the original and remuxed files to elementary streams > for more meaningful comparison. > > > > > On Thu, Jul 2, 2015 at 11:04 AM, Austin Einter <austin.ein...@gmail.com> > > wrote: > > > > > Hi All > > > I am new to FFmpeg. > > > But I am really excited to learn more about it. > > > > > > I tried remuxing example as a first step. > > > > > > I have taken remux example available at > > > http://ffmpeg.org/doxygen/trunk/doc_2examples_2remuxing_8c- > > example.html. > > > > > > I compiled andlinked to ffmpeg .so files. > > > Everything went fine. > > > > > > Now I downloaded a webm file (small.webm). > > > It contains vp8 and vorbis frames. > > > > > > I did remux it and output file is remuxed.webm > > > > > > I can play the remuxed webm file. > > > > > > So far so good. > > > > > > > > > ---------------------------------------------------------------------- > > > ---------------------------------------- > > > > > > Now I wanted to remux a webm file that contains vp8 and opus frames. > > > I could not get such file in internet. > > > > > > So I converted small.webm file to another file say output.webm that > > > contains vp8 and opus frames using below command. > > > > > > *./ffmpeg -i small.webm -c:v libvpx -c:a libopus -qmin 0 -qmax 20 > > > output.webm* > > > > > > I opened output.webm in a mozilla browser and I am able to play it. > > > Looks everything fine here. > > > > > > Then I did remux of output.webm and say resultant file is remuxed.webm. > > > > > > If I try to pay remuxed.webm in mozilla browser, it does not play. > > > It gives an error "Video can't be played because the file is corrupt". > > > > > > Can somebody help me to understand when I remux vp8/vorbis file it > > > works, and when I remux vp8/opus file it does not work using the > > > example at > > http://ffmpeg.org/doxygen/trunk/doc_2examples_2remuxing_8c- > > example.html. > > > > > > I am using ffmpeg 2.7.1 version. > > > > > > Thanks > > > Austin > > > > > > > > > > > > > > _______________________________________________ > > ffmpeg-user mailing list > > ffmpeg-user@ffmpeg.org > > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user