[FFmpeg-user] teletext.dat

william Gunnells gunnells at gmail.com
Sat Feb 13 23:04:53 CET 2016

Hey Carl Eugen

Correct ccextractor can extract subtitles from original ts just like
ffmpeg. However ccextractor creates a ascii text file that you can read.
ffmpeg seems to create a dat file. I'm have a hard time decoding the dat
file. Not sure what format its in. hex, base64 qp. I thought perhaps the
command that I was using was extracting both dvb_teletext and dvb_subtitle
and populating the teletext.dat file with both content making it corrupted.
I was looking into the map command option. But that seems confusing also.

In the previous command ffmpeg is able to identify both:

Stream #0:1[0x101](eng): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)
Stream #0:2[0x102](eng): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)

On Sat, Feb 13, 2016 at 6:30 AM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> william Gunnells <gunnells <at> gmail.com> writes:
> > ffmpeg -i output.ts -vn -an -f rawvideo -copyinkf -scodec copy
> teletext.dat
> > With ccextractor I can extract both dvb_teletext and
> > dvb_subtitle and populate a plain text file with time codes.
> Just to make sure I don't misunderstand:
> You can read the file teletext.dat with ccextractor?
> Or is ccextractor able to export subtitles from the
> original transport stream (just as FFmpeg can)?
> Carl Eugen
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