[FFmpeg-user] Video and Audio is off-sync on Decklink SDI output

Matthias, Thomas Thomas.Matthias at dolby.com
Wed Mar 1 00:32:13 EET 2017

Just seeing this now.  If filters is the wrong solution for setting points for Decklink SDI output, what would be the correct way to do so?


On 2/22/17, 3:39 PM, "ffmpeg-user on behalf of Carl Eugen Hoyos" <ffmpeg-user-bounces at ffmpeg.org on behalf of ceffmpeg at gmail.com> wrote:

    2017-02-22 23:32 GMT+01:00 Tung Tran <tung.tran at v247.com>:
    > * ffmpeg -i rtmp://something  -vf "setpts=PTS-STARTPTS" -af
    > "asetpts=PTS-STARTPTS" -f decklink -pix_fmt uyvy422  "DeckLink SDI" *
    Complete, uncut console output missing.
    Why are you using filters?
    > Video and audio of input rtmp is synced on VLC or other software.
    Does the following produce a file that plays in-sync?
    $ ffmpeg -i rtmp://something -qscale 2 out.avi
    Carl Eugen
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