Thank you for you repy! "There is a horrible bug in Quicktime that causes gamma shifts" --> Can you tell more detail? Thanks!
2015-08-13 19:17 GMT+08:00 Bouke (VideoToolShed) <[email protected]>: > ---- Original Message ----- From: "linxs" <[email protected]> > To: "FFmpeg user questions" <[email protected]> > Sent: Thursday, August 13, 2015 7:21 AM > Subject: [FFmpeg-user] ProRes -> MPEG2 bug: color shifting? > > > Hi, >> >> I need helps for color shifting. Is it bug? or I am wrong with the usage? >> >> I get a .mov file and its video format is "ProRes 422, 24 fps, 1920x1080, >> BT.709". >> I put the MOV file in this mail as attachment "proress_hq.mov", and only >> one frame in this MOV. >> >> Using ffmpeg to convert it to MPEG-2: >> ffmpeg -i proress_hq.mov -c:v mpeg2video -b:v 30M -pix_fmt yuv420p my.m2v >> >> I compared them by previewing "proress_hq.mov" and "my.m2v" in Edius and I >> found there is a little color difference: >> "proress_hq.mov" seems to be a small little brighter than "my.m2v" and the >> color in "my.m2v" seems to be a little more saturate. >> > > AFAIK, Edius uses Quicktime to decode. > There is a horrible bug in Quicktime that causes gamma shifts. > What you could try is to convert both your outputs to testfiles, both > using the same codec/format. > Then compare those two. If they are alike, it's Edius that messes up > things. > > hth, > Bouke > > How can i convert this mov to mpeg2 without color shifting? >> > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
