2014/10/13 2:05、Nicolas George <geo...@nsup.org> wrote: > Le primidi 21 vendémiaire, an CCXXIII, Kimio Miyamura a écrit : >> I know that vobsub subtitles are bitmaps. But in a original DVD, the >> subtitle are white bordered in black. I don't know how ffmpeg process >> those subtitle, but I think ffmpeg intentionally change the color of >> subtitle. Am I wrong? > > In DVDs, the subtitles colors are stored in the IFO metadata file. Your > command line does not use that file (and actually, FFmpeg is not capable of > taking advantage of it yet), so the palette is lost. > > You can override the palette using the -palette option to the dvdsub > decoder. > > If that does not work or if it is not powerful enough, remember that once > you use the bitmap subtitles in the filter graph, they are actually treated > as video (with alpha). So you can use all video filters, and amongst the > various hue and lut filters there is probably one that can change the > colors.
Thank you very much. Now I understand why my command line produce yellow colored subtitle. Also I understand how to change the color using -pallet option. > As a side note, I see your command line accesses the VOB files directly in > the DVD-Video file structure. That is almost always wrong. You need to use > DVD-Video-aware software to reconstruct the MPEG streams correctly. You can > use the dvd2concat for that for example, or mplayer -dumpstream. OK, I will take care... // Miya _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
