On 17 Feb 2016, at 20:43, Henk D. Schoneveld <belca...@zonnet.nl> wrote:
> > On 17 Feb 2016, at 20:32, Marton Balint <c...@passwd.hu> wrote: > >> >> On Tue, 16 Feb 2016, Henk D. Schoneveld wrote: >> >>> >>> On 16 Feb 2016, at 14:40, Carl Eugen Hoyos <ceho...@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. >> >> Okay, I think I hunted this down, the problem is that the probed dvb >> teletext stream is only detected during avformat_find_stream_info and is not >> present after avformat_open_input, therefore it has no options set, so the >> codec defaults to a bitmap output, which has no avctx->subtitle_header, >> therefore mov_text encoding fails. > ding <-> thinking, the order might be crucial ;-) doing of course >> >> I'll submit a patch which changes the order of initializations in ffmpeg.c >> and fixes this issue. > That would be great > > Henk >> >> Regards, >> Marton >> _______________________________________________ >> ffmpeg-user mailing list >> ffmpeg-user@ffmpeg.org >> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
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