2014/10/12 23:03、Nicholas Robbins <nickrobbins-at-yahoo....@ffmpeg.org> wrote:
>> On Sunday, October 12, 2014 9:47 AM, James Darnley <james.darn...@gmail.com> >> wrote: > >>> On 2014-10-12 14:17, Kimio Miyamura wrote: >> >>> The command line works fine and I can get a mp4 movie with subtitle. But I >>> got yellow colored subtitle. I'd like to change subtitle color into yellow >>> to white if I can. >>> >>> Is there any way to change overlay color of subtitle? >> >> Only of text subtitles. DVDs have vobsub subtitles which are bitmaps. >> This means it can't be as easy as setting "color=white". There >> might be >> some complicated way of altering the colours of the bitmaps by >> saturation, brightness, or just a lut. > > If they are vobsubs, you could split them out into a track.idx/track.sub pair > with, for instance mkvextract. > > Looking at the .idx file, I see it has a line at the start: > > palette: 000000, 0000ff, 00ff00, ff0000, ffff00, ff00ff, 00ffff, ffffff, > 808000, 8080ff, 800080, 80ff80, 008080, ff8080, 555555, aaaaaa > > Changing that would presumably change the color of the subtitles. > > mkvmerge can pull the subtitles back in. > > So what i would suggest is > > > #remux subtitles > ffmpeg -analyzeduration 60M -probesize 60M -i > /Volumes/DVD_VIDEO/VIDEO_TS/VTS_01_1.VOB -vn -an subtitles.mkv > > #pull out .idx/.sub pair > mkvextract tracks subtitles.mkv 0:subtitles.idx > > $??edit that line to change the colors?? > > #put the .idx/.sub pair back together > mkvmerge -o newsubs.mkv subtitles.idx > > > #use that new subtitle stream > ffmpeg -analyzeduration 60M -probesize 60M \ > -i /Volumes/DVD_VIDEO/VIDEO_TS/VTS_01_1.VOB \ > -i newsubs.mkv \ > -filter_complex "[0:v][1:s]overlay[v]" \ > -map [v] -map 0:a -t 00:05:00 test.mp4 > > I have no idea if changing the palette line will work. Thanks for procedure. I don't tried it yet. But this procedure is based on changing color of original dvd-vobsub. Am I right? Do I need this procedure even if original dvd-vobsub is white bordered in black when watching original DVD with player? I heard that the color is intentionally changed by ffmpeg. Am I wrong? // Miya _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
