Jim, Thanks for your patience, Jim. I think my first problem is doing the video rendering in Cinelerra. I believe I have to do this successfully before I can make use of any of the commands you have provided. See my questions embedded in your reply below.
Murray --- On Date: Mon, 16 Feb 2009, James Youngquist <[email protected]> wrote: > > Hope this helps. > > > The the full "Use Pipe" line is: > ffmpeg -f yuv4mpegpipe -i - -y -threads 4 -r 30000/1001 > -vcodec huffyuv > -f matroska % OK, I believe that the above command is issued in a terminal. Is that correct? So where does the file "yuv4mpegpipe" come from? Somewhere in the documentation: http://cinelerra.org/docs/split_manual_en/cinelerra_cv_manual_en_20.html I see "Audio and video are rendered separately and combined later in a procedure external to Cinelerra. Audio is rendered into .ac3, and video is rendered into a yuv4mpeg stream which is piped through either mpeg2enc or ffmpeg into a .m2v file." However, "yuv4mepg" is not listed under my options when I click on "Render". I am using "cinelerra-4-repack" version 20080819 with Kubuntu 8.04 (KDE3) AMD64 version on a system using an AMD Athlon 64bit dual core processor. > Render audio as Microsoft WAV. Must render audio and video > separately. > > So supposing you render to MyVideo.mkv and MyAudio.wav, I can render the Audio to MyAudio.wav with no problem. But what option do I use to render the video to MyVideo.mkv? The only choices that appear relevant on my list are" .avi (which crashes), .mov (Quicktime), .m2v (MPEG) and .ogg, none of which are playable in any of my viewers. > create the final > video using ffmpeg or mencoder (or whatever) from command > line). > > For example, the following commands encode to MPEG2 > suitable for DVDs > (assuming MyFile.mkv is 720x480). See the mplayer > documentation from > their website on how to use other codecs. Google > "aften" for where to > download it; it's a decent AC3 encoder though you can > use mencoder too. > Pay attention to the file extensions... > > PASS 1 > > mencoder MyVideo.mkv \ > -ovc lavc \ > -lavcopts > threads=4:vcodec=mpeg2video:aspect=16/9:vrc_buf_size=1835:vrc_maxr > ate=8000:vbitrate=6000:keyint=15:vstrict=0:trell:mbd=2:precmp=2:subcmp=2:cmp=2:d > ia=-10:predia=-10:cbp:mv0:dc=10:vstrict=0:vpass=1 \ > -noskip -mc 0 \ > -o /dev/null > > > PASS 2 > > mencoder MyVideo.mkv \ > -ovc lavc \ > -lavcopts > threads=4:vcodec=mpeg2video:aspect=16/9:vrc_buf_size=1835:vrc_maxr > ate=8000:vbitrate=6000:keyint=15:vstrict=0:trell:mbd=2:precmp=2:subcmp=2:cmp=2:d > ia=4:predia=4:cbp:mv0:dc=10:vstrict=0:vpass=2 \ > -noskip -mc 0 \ > -of mpeg -ofps 30000/1001 \ > -mpegopts format=dvd:tsaf:vaspect=16/9 \ > -o MyVideo.mpg > > ffmpeg -i MyVideo.mpg -an -vcodec copy -y MyVideo.m2v > > > Create AC3 > > aften MyAudio.wav MyAudio.ac3 > Why not just render the audio to ac3 in the first place? It is one of the options listed under the Render menu. > > Create DVD compliant MPEG2 > > mpleg -f 8 MyVideo.m2v MyAudio.ac3 -o MyVideo.dvd.mpg > > > Yeah, a lot of steps it seems. But the benefit is you > still have the > original pristine MyVideo.mkv and MyAudio.wav unencumbered > with > compression artifacts that can be reencoded into any > formats needed. > Nobody ever said video editing was for the small > hard-drives! Also, you > can stick the above commands into a shell script (another > topic > entirely) to streamline the process. > > -Jim _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
