[FFmpeg-devel] Implementing closed caption for FFmpeg

Anshul anshul.ffmpeg at gmail.com
Mon Dec 1 20:52:18 CET 2014


On 12/02/2014 12:51 AM, Carl Eugen Hoyos wrote:
> Anshul <anshul.ffmpeg <at> gmail.com> writes:
>
>>> This is basic implementation where all features 
>>> of closed caption are not implemented.
> What does the decoder output?
> Can it be used to produce ass-in-mkv?
>
> Thank you, Carl Eugen
>
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I have only tested with srt and webvtt files, but it should support all
text based output format.

I use following command to decode cc inside h264 user data
./ffmpeg -f lavfi -i
"movie=/home/a141982112/test_videos/cap_eng_sub1.ts[out0+subcc]" some.srt


for cc as separate stream it will work
ffmpeg -i some.ts some.srt


-Anshul


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