[FFmpeg-trac] #10114(ffmpeg:new): audio sync lags while recording x11grab
FFmpeg
trac at avcodec.org
Wed Dec 21 07:56:57 EET 2022
#10114: audio sync lags while recording x11grab
---------------------------------+---------------------------------------
Reporter: betlog | Type: defect
Status: new | Priority: normal
Component: ffmpeg | Version: unspecified
Keywords: x11grab | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
---------------------------------+---------------------------------------
Summary of the bug:
When recording desktop using x11grab the audio is several seconds behind
the video
-effects Kubuntu 22.04
-does not effect Kubuntu 20.04
How to reproduce:
{{{
ffmpeg -v 9 -loglevel 99 \
-hwaccel cuvid \
-c:v h264_cuvid \
-f pulse \
-acodec pcm_f32le \
-probesize 32 \
-i $(pactl list sources short|grep
'analog.*stereo.*monitor'|awk '{print $2}') \
-f x11grab \
-framerate 60.00 \
-video_size 1920x1080 \
-i :0.0+0,0 \
-g 60 \
-map 1:v \
-map 0:a \
-c:v h264_nvenc -qp 18 \
-c:a aac -ac 2 -channel_layout stereo -b:a 128k -r:a 48000 \
"/media/user/video12/$(date +%Y-%m-%d--%H-%M-%S)_TEST.mkv"
ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg
developers
built with gcc 11 (Ubuntu 11.2.0-19ubuntu1)
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/10114>
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