On Thu, Jul 12, 2012 at 11:52 PM, Patrick Matthäi <[email protected]> wrote: > Puh Dan, > > this is currently the last one ;-) > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=681319 > > Backtrace doesn't look very helpful here. I also will try it out > tomorrow, but maybe you have got an idea > > Am 13.07.2012 00:00, schrieb Jonas Smedegaard: >> Hi Patrick, >> >> On 12-07-12 at 11:51am, Patrick Matthäi wrote: >>> could you please install the mlt dbg and ffmpeg/libav dbg packages and >>> run it within gdb? >> >> I've tried but am not really familiar with gdb, so please tell me if you >> need something else. >> >> Executing this: >> >> LANG=C gdb --args melt $infile -consumer avformat:video.webm b=768k >> >> ...and then typing "run", lead to this: >> >> [libvorbis @ 0x5555558947c0] oggvorbis_encode_init: init_encoder failed >> consumer_avformat.c: Unable to encode audio - disabling audio output.
This is an operator error because 'b' is an ambiguous option; by not specifying audio or video bitrate it ends up applying to both. This is due to the way MLT supports and exposes the libav AVOption API to the user. It appears the Ogg Vorbis encoder does not like this high of a bitrate and 500k is the maximum. The solution is to supply separate vb and ab properties. I suppose you could counter-argue that melt does not gracefully handle a failure to configure the audio codec, and that is fixed now in mlt git commit 406d8aa. >> [webm @ 0x55555583cb80] Extradata corrupt. >> Current Position: 0 >> Program received signal SIGFPE, Arithmetic exception. >> [Switching to Thread 0x7fffe0772700 (LWP 29121)] >> 0x00007ffff6fa5e34 in frac_add (incr=1001000, f=0x555555877028) >> at >> /build/buildd-libav_0.8.3-4-amd64-IhqUur/libav-0.8.3/libavformat/utils.c:116 >> 116 >> /build/buildd-libav_0.8.3-4-amd64-IhqUur/libav-0.8.3/libavformat/utils.c: No >> such file or directory. > ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Mlt-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mlt-devel
