Hi Hibiki Kanzaki! On 2009.03.11 at 12:16:54 -0700, Hibiki Kanzaki wrote next: > (how) Can I re-encode a video file/stream so the output > is all I-Frames, and, where the concept of "GOP" applies, > every GOP has exactly one frame? Yes, you have to use mjpeg codec in libavcodec (assuming you want some lossy compression) or mpeg4 codec with "keyint=1" option. It should be also possible with xvid and x264 but i haven't checked if it works. Now if you want loseless compression (or no compression) there are more options. Remember that you need to increase your bitrate A LOT for mjpeg or mpeg4 with keyint=1 compared to original video, or video quality will drop a lot. With mjpeg you can't use vbitrate option, use vqmin/vqmax or vqscale instead. Altered examples from mplayer manpage: mencoder dvd://2 -chapter 10-15 -o title2.avi -oac copy -ovc lavc -lavcopts vcodec=mjpeg:vqscale=2 mencoder dvd://2 -chapter 10-15 -o title2.avi -oac copy -ovc lavc -lavcopts vcodec=mpeg4:keyint=1:vbitrate=15000 -- Vladimir _______________________________________________ MPlayer-users mailing list MPlayer-users@xxxxxxxxxxxx https://lists.mplayerhq.hu/mailman/listinfo/mplayer-users
