Hello everybody If I understood you correctly to avoid corruption, I need to add the option -async 1 -vsync 1 in my ffmpeg pipeline is this correct?, now i will make some test with ffmepg 4 and the new driver included on version 10.11.1 blacmagic. Thanks for your help Best regards
On Sun, Jul 22, 2018 at 9:10 PM, Marton Balint <[email protected]> wrote: > > > On Wed, 18 Jul 2018, Flumotion Support wrote: > > Hello everybody >> >> I have problems capturing a sdi flow with ffmpeg, I'm using a blackmagic >> mini recorder pro, after a while of working the capture the audio is >> distorted and the only way to fix it is to restart ffmpeg. >> >> this is my pipeline >> /usr/local/bin/ffmpeg -re -loglevel 48 -format_code pal -f decklink -i >> DeckLink Mini Recorder -audio_input embedded -video_input sdi -vcodec >> libx264 -crf 22 -preset:v veryfast -b:v 900k -pix_fmt yuv420p -acodec >> libfdk_aac -ab 64k -ar 48000 -ac 2 -s 640x360 -f flv rtmp:// >> myserver.com:1935/test/live >> >> I add an audio capture that is distorted from the second 10. >> I will grow any help you can offer me. >> >> Thanks in advance >> King regards >> >> >> croppedvideo.mp4 >> <https://drive.google.com/a/flumotion.com/file/d/1R_pjUps2xk >> LYepeTxLIWKxqSy_qCnTF0/view?usp=drive_web> >> >> > > The audio gets corrupted during the DVE effect. Maybe there is something > in the SDI signal that the decklink card does not like. (I had similar > audio corruption when the PAL signal was mixed by an NTSC signal by mistake > for a few seconds) Try using a frame sync. You can also try the HDMI > capture by buying a SDI to HDMI converter. And you can also try the > BlackMagic support of course, as this is almost surely a BlackMagic issue. > > Regards, > Marton > > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". > -- Flumotion Support Flumotion Services S.A. Avda. Diagonal 593-595 5º 08021 Barcelona - Spain www.flumotion.com _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
