On Thu, Jul 10, 2014 at 1:26 PM, Michael Niedermayer <michae...@gmx.at> wrote: > On Thu, Jul 10, 2014 at 01:12:20PM -0700, Vignesh Venkatasubramanian wrote: >> On Thu, Jul 10, 2014 at 12:58 PM, Michael Niedermayer <michae...@gmx.at> >> wrote: >> > On Mon, Jul 07, 2014 at 01:41:34PM -0700, Vignesh Venkatasubramanian wrote: >> >> This patch adds the ability to generate WebM DASH manifest XML using >> >> ffmpeg. A sample command line would be as follows: >> >> >> >> ffmpeg \ >> >> -f webm_dash_manifest -i video1.webm \ >> >> -f webm_dash_manifest -i video2.webm \ >> >> -f webm_dash_manifest -i audio1.webm \ >> >> -f webm_dash_manifest -i audio2.webm \ >> >> -map 0 -map 1 -map 2 -map 3 \ >> >> -c copy \ >> >> -f webm_dash_manifest \ >> >> -adaptation_sets “id=0,streams=0,1 id=1,streams=2,3” \ >> >> manifest.xml >> >> >> >> It works by exporting necessary fields as metadata tags in matroskadec >> >> and use those values to write the appropriate XML fields as per the WebM >> >> DASH Specification [1]. Some ideas are adopted from webm-tools project >> >> [2]. >> >> >> >> [1] >> >> https://sites.google.com/a/webmproject.org/wiki/adaptive-streaming/webm-dash-specification >> >> [2] >> >> https://chromium.googlesource.com/webm/webm-tools/+/master/webm_dash_manifest/ >> >> >> >> Signed-off-by: Vignesh Venkatasubramanian <vigne...@google.com> >> > >> > what if the input is not webm but lets say mpeg-ts ? >> >> not sure what you mean here, the muxer is only for generating DASH >> Manifest for WebM files. > > well, i mean that if you feed it from mpeg-ts it would generate > webm files and a manifest > similar to what our hls muxer would do > i understand it doesnt do that but i dont understand why > > would it have a disadvantage if it worked that way ? >
that would be the ideal case. but i could not figure out how to achieve that. (i.e.) take multiple audio/video files of any format -> convert them to multiple audio/video WebM files and generate the manifest in one step. using this muxer one can get there in two steps. first one to convert the audio/video streams to WebM and the second one to generate the manifest. Generating the manifest is not possible before the WebM file is fully generated. > [...] > > -- > Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB > > During times of universal deceit, telling the truth becomes a > revolutionary act. -- George Orwell > > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel > -- Vignesh _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
