This is pretty close to my workflow so I think you are on the right track. x264 is definitely better than mp4 if you are looking for good quality to file size ratio. I am playing around with my x264 ffmpeg command. Here is what it is currently, but I think I can do better.
ffmpeg -i inputfile -an -pass 1 -aspect 16:9 -vcodec h264 -b 512k -r 29.97 -flags +loop -cmp +chroma -partitions 0 -me_method epzs -subq 1 -trellis 0 -refs 1 -coder 0 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -bt 512k -maxrate 768k -bufsize 2M -rc_eq 'blurCplx^(1-qComp)' -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -level 13 outputfile.mp4 && ffmpeg -i inputfile -acodec aac -ab 128k -pass 2 -aspect 16:9 -vcodec h264 -b 512k -r 29.97 -flags +loop -cmp +chroma -partitions +parti4x4+partp4x4+partp8x8+partb8x8 -flags2 +mixed_refs -me_method umh -subq 7 -trellis 2 -refs 5 -coder 0 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -bt 512k -maxrate 768k -bufsize 2M -rc_eq 'blurCplx^(1-qComp)' -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -level 13 -y outputfile.mp4 On Sun, May 17, 2009 at 12:14 AM, Daniel Jircik<djir...@gmail.com> wrote: > Hi > Looking for critique and suggestions for hdv to web hd workflow. I like > vimeo... results: > http://vimeo.com/4684883 > > dvgrab -a -f hdv > > Load clips and render to 720p Quicktime for Linux using translate, > deinterlace and sharpen > > yuva 4:2:2 planar file is apr. 5 GB per min > uncompressed rgb is apr 10 GB per min. > > Edit and render Quicktime for Linux. > > As per this very informative thread: > http://flowplayer.org/forum/7/12671 > I got pretty good h264 results. > > mp4 from yuva 4:2:2 is apr 15 MB per min > mp4 from uncompressed rgb is 30 MB per min > > the ffmpeg comandline is: > > $ ffmpeg -y -i 720-yuv-test2.mov -acodec libfaac -ar 44100 -ab 96k -vcodec > libx264 -level 41 -crf 20 -bufsize 20000k -maxrate 25000k -g 250 -r 20 -s > 1280x720 -coder 1 -flags +loop -cmp +chroma -partitions > +parti4x4+partp8x8+partb8x8 -flags2 +brdo+dct8x8+bpyramid -me umh -subq 7 > -me_range 16 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -rc_eq > 'blurCplx^(1-qComp)' -bf 16 -b_strategy 1 -bidir_refine 1 -refs 6 > -deblockalpha 0 -deblockbeta 0 vimeohd2.mp4 > > It ended up being a bit choppier than I had hoped and there is a small audio > delay. > > Where I was not sucsessful was trying to render mpeg2 with cinelerra as per > crazed > mulehttp://crazedmuleproductions.blogspot.com/2007/06/beginners-guide-to-exporting-video-from.htmls > Audio rendered but video crashed with errors. > Is mpeg any better than x264 ? > > Suggestions? > > Kind Regards > Daniel Jircik > http://reggaecobras.com > > > -- Thanks, Aaron Newcomb http://www.thesourceshow.org _______________________________________________ Cinelerra mailing list Cinelerra@skolelinux.no https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
