Re: [Libav-user] Decoding HD videos on iPad devices

2012-12-20 Thread Carl Eugen Hoyos
Gohar Hovhannisyan writes: > I've set the number of threads to 10, but every time my app > crashes on avcodec_decode_video2. (Backtrace etc. missing, see https://ffmpeg.org/bugreports.html ) Is the crash reproducible with ffmpeg (the application)? Please do not top-post here, Carl Eugen _

Re: [Libav-user] Decoding HD videos on iPad devices

2012-12-20 Thread Carl Eugen Hoyos
Carl Eugen Hoyos writes: > > We wonder whether it is possible to perform decoding on > > iPad GPU to speed up decoding process (by compiling > > it with special flags, or with some patches) > > Only if you implement it. Reconsidering this, it is possible that -vcodec h264_vda is what you are

Re: [Libav-user] Decoding HD videos on iPad devices

2012-12-19 Thread Gohar Hovhannisyan
Hi Carl, thank you for your answer. I've set the number of threads to 10, but every time my app crashes on avcodec_decode_video2. Could you please assist me what I'm doing wrong? Thanks, Gohar On 12/19/12 2:59 PM, Carl Eugen Hoyos wrote: Gohar Hovhannisyan writes: We wonder whether it is

Re: [Libav-user] Decoding HD videos on iPad devices

2012-12-19 Thread Carl Eugen Hoyos
Gohar Hovhannisyan writes: > We wonder whether it is possible to perform decoding on > iPad GPU to speed up decoding process (by compiling > it with special flags, or with some patches) Only if you implement it. > or run it parallel on dual core (iPad2) / quad-core (new iPad) > or are there a

[Libav-user] Decoding HD videos on iPad devices

2012-12-13 Thread Gohar Hovhannisyan
Dear FFMpeg team, We are creating player for iPad and using FFMPeg with libavcodec to decode video frames. FFMpeg helped to process a lot of formats and really reduced the development time. Unfortunately with HD videos we experience a poor performance and the video playback is breaking up. Ac