[FFmpeg-user] Can I change overlay color of subtitle?

[James Darnley]

On 2014-10-12 16:32, Kimio Miyamura wrote:
> 
> 2014/10/12 22:47、James Darnley <james.darnley at 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.
> 
> 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?

I don't think it is supposed to do that but I am not at all familiar
with subtitles in FFmpeg.


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