[FFmpeg-trac] #4189(undetermined:new): webcam overlay audio desync Windows 7
FFmpeg
trac at avcodec.org
Mon Dec 15 19:39:24 CET 2014
#4189: webcam overlay audio desync Windows 7
-------------------------------------+-------------------------------------
Reporter: Kakariko__ | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Hi im using this command. FFmpeg 32bit windows static version from
http://ffmpeg.zeranoe.com
{{{
ffmpeg -loglevel warning -rtbufsize 100000k -f dshow -i
video="UScreenCapture" -f dshow -i video="MyWebCam" -filter_complex
"[0:v]setpts=PTS-STARTPTS[background];[1:v]setpts=PTS-
STARTPTS,scale=-1:134[foreground];[background][foreground]overlay=main_w-
overlay_w+1:main_h-overlay_h" -f dshow -i audio="virtual-audio-capturer"
-c:v libx264 -crf 21 -preset:v veryfast -pix_fmt yuv420p -tune film -c:a
libmp3lame -q:a 2 -ar 44100 -threads 0 "E:\test.mkv"
}}}
audio is ~2 seconds too fast. Tested on two laptops, tested with stereo
mix also. Thanks for help.
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Ticket URL: <https://trac.ffmpeg.org/ticket/4189>
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