grimoire

commit af75a31662cc76582e92a6ea5a38880b7c1ab3f9
parent 002c000e52286a60b436b94a392abd80fae44278
Author: pyratebeard <root@pyratebeard.net>
Date:   Wed,  5 Jun 2019 14:09:05 +0100

new note - adjust crf

Diffstat:
M
technology/linux/audio_visual/ffmpeg.md
 | 
6
++++++

1 file changed, 6 insertions(+), 0 deletions(-)
diff --git a/technology/linux/audio_visual/ffmpeg.md b/technology/linux/audio_visual/ffmpeg.md
@@ -20,3 +20,9 @@ ffmpeg  -f alsa -ac 2 -i alsa -f x11grab -r 15 -i :0.0 -acodec libmp3lame -vcode
 ```
 ffmpeg -i videofile.mp4 videofile.webm
 ```
+
+### adjust crf
+adjust constant rate factor to lower bit rate
+```
+ffmpeg -i input.mp4 -vcodec libx264 -crf 20 output.mp4
+```