installing theora codec for ffmpeg ubuntu

So this will end up working in Firefox 3.1 and greater - the new HTML “video” tag: We add the metadata to the audio vorbis ogg because adding it to the video ogv file wound up making the first video frame not a keyframe (!).We convert to yuv420p in the rawvideo step because ffmpeg2theora has (i think) some known issues of not handling all yuv422 video inputs (i found at least a few videos that did this).

We do the vorbis audio outside of libtheora (or ffmpeg2theora) to avoid any issues with Audio/Video sync.Why the double pipe above? Some videos could not go directly to yuv4mpegpipe format such that libtheora (or ffmpeg2theora) would work all the time.oggzmerge tmp.ogv audio2.ogg -o CapeCodMarsh.ogv.oggz-comment audio.ogg -o audio2.ogg TITLE=”Cape Cod Marsh” ARTIST=”Tracey Jaquith” LICENSE=”” DATE=”2004″ ORGANIZATION=”Dumb Bunny Productions” LOCATION=.ffmpeg -y -i CapeCodMarsh.avi -vn -acodec libvorbis -ac 2 -ab 128k -ar 44100 audio.ogg.ffmpeg -an -deinterlace -s 400×300 -r 20.00 -i CapeCodMarsh.avi -vcodec rawvideo -pix_fmt yuv420p -f rawvideo – | ffmpeg -an -f rawvideo -s 400×300 -r 20.00 -i – -f yuv4mpegpipe – | libtheora-1.0/lt-encoder_example –video-rate-target 512k – -o tmp.ogv.combine the video and audio ogg files to an.add tasty metadata (with liboggz utils).for videos with audio, ffmpeg create a vorbis audio.pipe its output to *another* ffmpeg to turn the video to “yuv4mpegpipe”.

use ffmpeg to turn any video to “rawvideo”.

after trying a bunch of tools over a good corpus of wide-ranging videos, i found a neat way to make the Archive derivatives. has started to make theora derivatives for movie files, where we create an Ogg Theora video format output for each movie file.

Installing theora codec for ffmpeg ubuntu