[FFmpeg-user] Cutting out part of a video does not work

[Cecil Westerhof]

Carl Eugen Hoyos <ceffmpeg at gmail.com> writes:

> Am Fr., 26. März 2021 um 17:28 Uhr schrieb Cecil Westerhof via
> ffmpeg-user <ffmpeg-user at ffmpeg.org>:
>
>> ffmpeg -y -ss 1189 -i 2021-03-25ToastmastersClubAvond.mp4
>> -to 442 -acodec copy -vcodec libx264 -crf 8 -async 1 speech.mp4
>
> The x264 documentation states that there is no good
> reason to use "crf 8" and please don't use "acodec copy"
> with "async 1", these two options are exclusive.

I thought that crf 8 would minimise degrading the video. So that is
not true.
Long ago I needed that, but probably I did not use acopy there,

Thanks. I will change that.

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof