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Im trying to get two 1080p videos side by side, Wanting the two scaled to 720p and combined both as 1080p

ive tried using the below code . it works fine when using the lower resolution but when i try to make it go higher it gets all mixed up

any tips

ffmpeg -i video.avi -i video2.avi -filter_complex "nullsrc=size=720x288 [base]; [0:v] setpts=PTS-STARTPTS, scale=360x288 [left]; [1:v] setpts=PTS-STARTPTS, scale=360x288 [right]; [base][left] overlay=shortest=1 [tmp1]; [tmp1][right] overlay=shortest=1:x=360:y=0" -c:v libx264 -f flv "rtmp://192.168.1.1/live/videocrop"

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  • when i try to make it go higher it gets all mixed up --> how do you change the command?
    – Gyan
    Commented May 7, 2019 at 12:59
  • by changing nullsrc=size=720x288 and the two scale=360x288 but guessing im doing it wrong lol any ideas how to get it higher resolution per video
    – rodreguous smith
    Commented May 7, 2019 at 13:10
  • Eg. ffmpeg -i video.avi -i video2.avi -filter_complex "nullsrc=size=1920x1080 [base]; [0:v] setpts=PTS-STARTPTS, scale=1280x720 [left]; [1:v] setpts=PTS-STARTPTS, scale=1280x720 [right]; [base][left] overlay=shortest=1 [tmp1]; [tmp1][right] overlay=shortest=1:x=360:y=0" -c:v libx264 -f flv "rtmp://192.168.1.1/live/videocrop"
    – rodreguous smith
    Commented May 7, 2019 at 13:15

1 Answer 1

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Just use hstack:

ffmpeg -i video.avi -i video2.avi -filter_complex "[0:v] setpts=PTS-STARTPTS, scale=360x288 [left]; [1:v] setpts=PTS-STARTPTS, scale=360x288 [right]; [left][right]hstack=inputs=2" -c:v libx264 -f flv rtmp://192.168.1.1/live/videocrop
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  • thanks that works, Now just run into this problem lol trac.ffmpeg.org/ticket/7547
    – rodreguous smith
    Commented May 8, 2019 at 11:22
  • @rodreguoussmith I'm assuming your build uses --enable-librtmp. The native FFmpeg RTMP implementation apparently is not affected by that bug. You may have to re-complile without --enable-librtmp to be able to use the native RTMP.
    – llogan
    Commented May 8, 2019 at 17:15
  • thanks yeah seems that annoying bug is doing it, are there any other protocols that could do the same job besides RTMP
    – rodreguous smith
    Commented May 8, 2019 at 20:52
  • @rodreguoussmith I'm not sure. I never got interested in streaming protocols. I suggest trying the native RTMP implementation before anything else.
    – llogan
    Commented May 8, 2019 at 21:47

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