[FFmpeg-user] Decklink output latency, high
martinarw at gmail.com
Sat May 9 20:54:19 EEST 2020
Anybody have an idea why I get a couple of seconds of latency when
outputting to a decklink device? I
ffmpeg -fflags nobuffer -i srt://x -f decklink -pix_fmt uyvy422 -c:a
pcm_s16le -ar 48000 -ac 2 "UltraStudio SDI"
Input is a TS stream SRT or UDP, input type does not r matter. Im getting
almost 4 seconds of delay on the SDI output compared to the stream. Seems a
bit high? One would expect a couple of frames. I have seen this question on
a few places but never seen an answer or solution.
Decklink driver 10.11.4, Windows
I only see this behaviour in ffmpeg not in other programs that uses
decklink output, Premiere, OBS etc.
More information about the ffmpeg-user