[FFmpeg-user] Screenrecording, audio is sped up when other process starts

[DEF]

On Tue, 24 Mar 2020 at 21:04 Tarjei Bærland <tarjeibaerland at gmail.com>
wrote:

> Hello!
>
> I have an issue where my audio is sped up when I start certain process
> while running ffmpeg. You can hear it after about 13 seconds in this video:
> https://www.youtube.com/watch?v=aGr2pDgZ_6k (it's in Norwegian and
> informal, as it is meant for fourteen highschool students), where it
> happens when I start a python process where pygame is loaded.
>
>
> Does anyone have any idea what could be the cause, and what I could do to
> remedy it?
>
> I have startet ffmpeg by the following command
>
>  ffmpeg \
>     -f x11grab \
>     -video_size 1920x1080 \
>     -i $DISPLAY.0+1920,0 \
>     -f alsa \
>     -acodec pcm_s32le \
>     -ac 4 \
>     -ar 44100 \
>     -i  sysdefault:CARD=U192k \
>     -filter:a "volume=10dB" \
>     -preset ultrafast \
>     -c:v libx264 \
>     -y \
>     -ac 1 \
>     -threads 4 \
>     ${OUTFILE}


Console output  up till when you start the python process please.


>