Am 13.05.2020 um 22:06 schrieb ffm...@osk.ch:
Hello
I would like to generate a sound file with two frequencies, sinus, one per
channel
(left, right) alternating between them. For example: left 0.5 sec 5kHz, then
right 0.5 sec 8kHz and so on.
I've spent hours reading ffmpeg docs but am overwhelmed by its power and
complexity.
ffmpeg -f lavfi -i sine=5000 -f lavfi -i sine=8000 -filter_complex
"[0]volume='lt(mod(t,1.0),0.5)':eval=frame[a];[1]volume='gte(mod(t,1.0),0.5)':eval=frame[b];[a][b]join=inputs=2:channel_layout=stereo"
-t 10 -y out.wav
Michael
_______________________________________________
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
