[FFmpeg-user] Which command line can do dvb_teletext from ts to mp4

Henk D. Schoneveld belcampo at zonnet.nl
Tue Feb 16 14:53:28 CET 2016

On 16 Feb 2016, at 14:19, Moritz Barsnick <barsnick at gmx.net> wrote:

> On Tue, Feb 16, 2016 at 12:08:32 +0100, Moritz Barsnick wrote:
>> On Tue, Feb 16, 2016 at 10:19:37 +0000, Carl Eugen Hoyos wrote:
>>> Since I just wanted to open a ticket saying this 
>>> absolutely never works:
> Why do you assume this absolutely never works? (I may have missed what
> is so different about my stream that it couldn't work with Henk's.)
> Not a rhetorical question. Out of interest. :-)
>>> Please provide your input sample;-(
>> Okay, let me strip that 10 GB input MPEG-TS down (using "dd") to a
>> section which demonstrates nicely. I'll upload it in an hour or so.
> I have stripped it down to approx. one minute, 100MiB. Sorry, I could
> have stripped it down more, but I wanted at least a few transitions in
> the subtitles.
> Find it as DVB-S.teletext_subtitles_777.ts and
> DVB-S.teletext_subtitles_777.ts.txt on
> ftp://upload.ffmpeg.org/incoming/.
> For those who don't have read access there:
> https://dl.dropboxusercontent.com/u/16955557/Video/DVB-S.teletext_subtitles_777.ts
> https://dl.dropboxusercontent.com/u/16955557/Video/DVB-S.teletext_subtitles_777.ts.txt
> I wrote some details in the text file, but let me quote as least one
> caveat (for those who trip across this message and not the whole
> thread):
> Note that only with the use of "-fix_sub_duration" do the subtitles
> come with the correct timing in the resulting file. Without they come
> extremely too slowly.
> Command line used:
> $ ffmpeg -fix_sub_duration -txt_format text -txt_page 777 -i DVB-S.teletext_subtitles_777.ts -map 0:v -map 0:2 -map 0:5 -c:v libx264 -c:a libfdk_aac -c:s mov_text -t 60 mov_text_from_DVB.02.mp4
Yes this sample works as you said it would.
> Moritz
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