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

[Henk D. Schoneveld]

On 16 Feb 2016, at 14:40, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> Henk D. Schoneveld <belcampo <at> zonnet.nl> writes:
> 
>>  Stream #0:5 -> #0:2 (dvb_teletext (libzvbi_teletextdec)
>> -> mov_text (native))
>> Error while opening encoder for output stream #0:2 - 
>> maybe incorrect parameters such as bit_rate, rate,
>> width or height
> 
> It seems that this is only the effect of my incorrect 
> autodetection patch, it works for samples with 
> correctly signaled teletext.
> You could try the patch Marton posted today (instead of 
> mine):
> "avformat/dvbtxt: add raw demuxer for dvb teletext probing”
I applied the patch, behaviour the same. My probably/maybe ‘crippled’ source files work fine with telxcc/srt and ffmpeg as long as ass and mkv as destination are chosen.
What I don’t understand is what makes ass -> mkv work and mov_text -> mp4 fail. 
What is the relation between one and the other. ffmpeg can decode dvb_teletext, is able to put it in ass format and NOT in mov_text format. It doesn’t make much sense to me.  
> 
> Carl Eugen
> 
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