[FFmpeg-user] BUG in use of extradata and extradata_size with dvb subtitles and teletext

JULIAN GARDNER joolzg at btinternet.com
Thu Dec 19 15:25:08 CET 2013








>________________________________
> From: Carl Eugen Hoyos <cehoyos at ag.or.at>
>To: ffmpeg-user at ffmpeg.org 
>Sent: Thursday, 19 December 2013, 15:15
>Subject: Re: [FFmpeg-user] BUG in use of extradata and extradata_size with dvb subtitles and teletext
> 
>
>JULIAN GARDNER <joolzg <at> btinternet.com> writes:
>
>> 2. dvbsubs reencoded FAILS
>> 
>> Command Line
>> ffmpeg -i ../testStreams/bbc.ts -c:v libx264 -b:v 1300k 
>> -c:s dvbsub -y -f mpegts a_dvb_enc.ts
>
>How is this teletext-related?


Did you read my explanation why it fails, it fails becase MPEGTSENC.C 
thinks this subtitle is TELETEXT not DVBSUBS, so its related as it 
affects bot DVBSUBS and TELETEXT

>>(Completely unrelated: Don't you agree that it makes 

>reproducing all kind of bug reports much, much harder 
>if you use "-c:v libx264"?)
>


Sorry from now on i will omit the libx264, but as always the normal 1st reply is "COMMAND LINE AND OUTPUT OR WE WONT TALK TO YOU", now i post my 
command line what do i get ...

I cant win can I


Also the video encoder makes no difference as its the subtitles im talking about


>This looks like ticket #2024
>
>> 3. dvbsubs copied FAILS
>> 
>> Command line
>> ffmpeg -i ../testStreams/bbc.ts -c:v libx264 -b:v 1300k 
>> -c:s copy -y -f mpegts a_dvb.ts
>
>I believe this is ticket #2989
>
>Carl Eugen
>
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joolz


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