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

Carl Eugen Hoyos ceffmpeg at gmail.com
Thu Feb 23 01:39:45 EET 2017

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

More information about the ffmpeg-user mailing list