Hello Antonio, > h264 or x264 are lossy codecs more suitable for postprodution.
x264 can create a lossless h.264 output. (--qp 0), ssim = 1, psnr = infinite. and w/ (--keyint 1) w/ get h.264 intra-only. > The best codec depends in the codec from your source tapes to keep as much > quality as possible in the editing without artifacts in the image. when capturing from SDI, HDMI, or analoc input, the video comes uncompressed, so I think the best codec is a lossless one. > DV have a problem of croma subsampling that don't have DVPRO or DV50 that true, usually people converts dv to some codec w/ a better croma subsampling (4:2:2), then edits the footage. thas why is nice for us to set a optimal codec for the intermediate codec. : ) bye, rafael diniz > > Antonio > > --- On Sat, 4/10/08, rafael2k <[EMAIL PROTECTED]> wrote: > > From: rafael2k <[EMAIL PROTECTED]> > > Subject: [CinCV] Best lossless codec for edition and exportation (was: > > input format for MP4 576p at 50fps) To: [email protected] > > Date: Saturday, 4 October, 2008, 2:49 AM > > Hey people, > > And how about the best lossless, compressed codec that can > > be used to edit? > > Is h.264 Intra ok for editing? > > I use to use DV to edit and for exporting x264 in lossless > > mode (w/ flac or > > alac as audio). > > > > how about muxing? I see that both ffmpeg and mencoder have > > buggy muxers for > > some stream formats (at least here, they failed to mux > > h.264 + flac in mkv, > > avi, mov or mp4). > > > > I'm using yuv4mpeg pipe to create h.264 lossless output > > using (very fast in > > quad-core machines): > > ln -s /dev/stdin /tmp/video.y4m ; x264 --qp 0 --no-cabac > > --subme 1 --keyint > > 1 --threads auto /tmp/video.y4m -o % > > > > > > bye, > > rafael diniz > > > > Em Thursday 02 October 2008, Florian Cramer escreveu: > > > On Thursday, October 02 2008, 20:02 (+0200), Martin > > > > Kápostá? wrote: > > > > files in DV, that is OK. The case i am writing is > > > > that DV supports only > > > > > > 25fps. Could you please suggest the best format > > > > to use 50fps clip in > > > > > > Cinelerra ofcourse uncompressed. > > > > > > [DV is actually not uncompressed, but a lossy codec > > > > that degrades video > > > > > quite a lot if you transcode from better source > > > > material.] > > > > > I had a similar question here on the list just few > > > > days ago. After a lot > > > > > of experimenting, I found the solution myself. Since > > > > Cinelerra's > > > > > preferred uncompressed format is yuv2 video and pcm > > > > audio in a QuickTime > > > > > container, the following command line should render > > > > practically any > > > > > video file into something that can be opened and > > > > edited in Cinelerra: > > > transcode -y mov -F yuv2 -N 0x1 -i <input file> > > > > -o output.mov > > > > > [Neither ffmpeg, nor mencoder seem to be able to > > > > create yuv2 video > > > > > streams, btw.] > > > > > > Florian -- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- Ciência da Computação @ Unicamp Rádio Muda, radiolivre.org, TV Piolho, tvlivre.org, www.midiaindependente.org Chave PGP: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x2FF86098 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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