On Wed, Sep 23, 2015 at 12:47 PM, Flávio Pontes <flaviocpon...@gmail.com> wrote:
> Hi, > > I need to stream the 2 inputs from a DeckLink Duo card in FHD. > So far I could compile ffmpeg with decklink support and capture one input > at a time without problems. > > When I try to capture from the 2 inputs I start getting the following > message repeatedly on both terminals: > [decklink @ 0x32287e0] Decklink input buffer overrun! > > I use these commands in the terminals: > > /opt/ffmpeg_build/bin/ffmpeg -f decklink -re -i 'DeckLink SDI (1)@7' -g 90 > -s hd1080 -profile:v baseline -pix_fmt yuv420p -preset veryfast -c:v > libx264 -b:v 2000k -bufsize 1400k -minrate 2000k -maxrate 2000k -c:a > libfdk_aac -b:a 96k -threads 4 -f flv rtmp://10.12.20.62/myapp/tvines > > /opt/ffmpeg_build/bin/ffmpeg -f decklink -re -i 'DeckLink SDI (2)@7' -g 90 > -s hd1080 -profile:v baseline -pix_fmt yuv420p -preset veryfast -c:v > libx264 -b:v 2000k -bufsize 1400k -minrate 2000k -maxrate 2000k -c:a > libfdk_aac -b:a 96k -threads 4 -f flv rtmp://10.12.20.62/myapp/tvescola > > I tried many combinations but couldn't get it to work. > I wonder if the input buffer is shared between the 2 inputs. > Is there any way to set an input buffer size independently for each > command? > > Thx in advance! > Flávio. > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > Hi Flávio, I'm not sure if this directly addresses your problem, but have you tried using the -thread_queue_size parameter? I believe having a deeper queue might help, the default value is only 8. I've used much larger values, even 2048 for example. Granted, I think 2048 is overkill but I don't see any problem in setting up larger queues. Ricardo _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
