Deyan <[email protected]> added the comment: Hello,
All players play the problem, because the problem is in the movie and not the players. During the fade in it has sequence of frames with equal brigthes, which basically causes the effect. You can see the effect in the attached files to this issue, Second 2 and second 19-21 are the most obvious. I tested with: mplayer, windows medial player, Firefox. They all show the same deffect in the movie, pause when fading-in. you can see for yourself with Firefox or whatever player you use: Take a look at the attached files, both are generated with the following command line: ffmpeg -y -i 2012-tlr2_h.640.mov -an -vcodec libtheora -b 1024k -t 00:00:30 movie.ogg fade-in-r23231-BAD.ogg - the problematic movie, generated with ffmpeg revision 23231 fade-in-r23230-good.ogg - the exact same command line but generated with ffmpeg revision 23230 I am sure you will see the difference, when the sun is fading in, above the statue. Also note that in order this to happen you have to use libtheora > 1.0 like 1.1 or 1.1.1 I made the following test: Created 2 movies with the same command line and different container: one in ogg container - having the deffect one in mkv container - good movie, no problem then i dissected both movies with the following command: ffmpeg -i fade-in-r23231-BAD.mkv -f image2 mkv/image%d.jpg ffmpeg -i fade-in-r23231-BAD.ogg -f image2 ogg/image%d.jpg Then compare the frames one to one. The thing I see with OGG container is that I have around 40 (image41 to image81) frames with constant brightnes and that is when the effect happens. While on the other side I have the pictures produced by the MKV container where I can see increase in the brightnes for each next frame during the fade-in If you need any additional info, please let me know. Regards, Deyan ________________________________________________ FFmpeg issue tracker <[email protected]> <https://roundup.ffmpeg.org/issue2398> ________________________________________________
