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Does anyone know how to extract teletext subtitles? I have tried ffmpeg, it says Invalid frame dimensions 0x0

CCExtractor, it says "Missing ASF header. Abort

telxcc, it says ! Invalid TS packet header; TS seems to be misaligned

I have done a lot of research, but have no luck. Can anyone offer some help!

Hoy Cheung
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2 Answers2

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dvb_subtitles cannot be extracted with ffmpeg easily because is an image that overlays the original. Good explanation: https://stackoverflow.com/a/20887655/2119685

There is a way to extract the dvb_teletext, which normally includes the subtiltes too.

Install the next dependency:

sudo apt-get install libzvbi-dev

Then recompile from source ffmpeg with: 

--enable-libzvbi

Good tutorial here on how to compile FFMPEG from source -https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu

Then execute the next command to fetch the subtitles to a .srt file:

ffmpeg -txt_format text -i INPUT1 -an -vn -scodec srt test.srt

And voila, your .srt subtitles will be in test.srt

Community
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blacatus
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Did you try using gstreamer ? appsrc->tsdemux->fakesink. Make pipeline like this, and then get the PES data from fakesink callback.

mahendiran.b
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