On Friday 14 October 2011 13:31:24 Dan Dennedy wrote: > I was thinking to do something like that in mlt_multitrack where I am > currenty setting that value, but I had not yet decided on whether to > add a constant or use double the track count or other. > > > Mikko, I would be interested to know if these changes have an influence > > on the crashes you experienced. > > I was really curious about that huge stack of invalid clip dialogs. > What do you think is going on there?
Using MLT in debug mode, I discovered several cases where FFmpeg did show a warning about insufficient thread locking around avcodec open / close. After several of this warnings, the avformat producer became corrupted and unable to load any clip, or simply crashed, which might be the reason for those clips becoming invalid. These problems were caused by concurrent uses of producers in Kdenlive, and also by a "weakness" in the sdl preview consumer that caused such corruption when doing the following steps very fast several times: stop the consumer delete the producer connect a new producer to the consumer start the consumer Looks like when looping, sometimes the consumer was stopped while starting, which caused avformat locking issues. I now inserted an event wait to make sure the consumer is correctly started before attempting a stop which fixed the issue. I managed to fix almost all cases that showed up on my 4 cores CPU, so Kdenlive should hopefully be more stable than ever now. regards jb ------------------------------------------------------------------------------ The demand for IT networking professionals continues to grow, and the demand for specialized networking skills is growing even more rapidly. Take a complimentary Learning@Cisco Self-Assessment and learn about Cisco certifications, training, and career opportunities. http://p.sf.net/sfu/cisco-dev2dev _______________________________________________ Kdenlive-devel mailing list Kdenlive-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kdenlive-devel
