> > To: [email protected] > > From: [email protected] > > Date: Sun, 10 May 2015 14:27:29 +0000 > > Subject: Re: [FFmpeg-user] HD > SD Down-Convert Prores Color > > > > Kevin Wells <kevwells <at> hotmail.co.uk> writes: > > > > > if I emit the format=uyvy422 then the output file > > > contains tiny green artefacts > > > > How can I reproduce this? > > > > Thank you, Carl Eugen > > > > _______________________________________________ > > ffmpeg-user mailing list > > [email protected] > > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > Hi Carl, Take any HD Prores HQ file and use this command: > > ffmpeg -i HD_Source.mov -map 0:v -map 0:a -vf > colormatrix=bt709:bt601,scale=720:576:flags=lanczos -vcodec prores_ks > -profile:v 3 -vtag apch -vendor ap10 -pix_fmt yuv422p10le -f mov -c:a > pcm_s16le SD_Source.mov > > Take the SD_Source.mov and put it in Final Cut Pro 7, stick it on a sequence > and add a Gamma effect (from image control) onto the video track in the > sequence. Double click on the video in the sequence and goto the Gamma filter > settings and turn the Gamma right up to 5. Now look at any black section of > video and you will see it full of ting green artefacts. Adding in the > format=uyvy422 gave me an almost perfect file, but not quite sure this is > correct. I will attach a tiny video to this email for you to test. Let me > know if you need anything else. > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Hi Carl, were you able to reproduce this issue with the instructions and sample test mov I sent? I am unable to find a solution. Kind regards. _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
