[ACCEPTED]-FFMPEG 2 Videos transcoded and side by side in 1 frame?-transcode
The result can be achieved with the combination 12 of scale, pad and overlay filters as the 11 following:
ffmpeg.exe -i LeftInput.mp4 -vf "[in] scale=iw/2:ih/2, pad=2*iw:ih [left];
movie=RightInput.mp4, scale=iw/3:ih/3, fade=out:300:30:alpha=1 [right];
[left][right] overlay=main_w/2:0 [out]" -b:v 768k Output.mp4
Here the first video is shrunk 10 by half, and padded to its original size. The 9 second video is shrunk by two thirds and 8 overlayed on the right half (padding area) of 7 the first one.
The shorter video can be 6 faded out; otherwise, it last frame will 5 be display till the end of the combined 4 video.
The result bit rate can be set with 3 -b:v option. Also, video sizes and positions 2 can be specified in pixels for pad, scale 1 and overlay filters.
In order to have one video take up the full 7 left half of the output video and the other 6 video take up the full right half of the 5 output video AND to have the correct audio, I 4 will expand upon @Dmitry Shkuropatsky's 3 answer. This took me like 5 or more minutes 2 to figure out, and I used ffmpeg version 1 3.4 (Copyright (c) 2000-2017):
>ffmpeg -i left.webm -vf "[in] scale=iw/2:ih/2, pad=2*iw:ih [left]; movie=right.mp4, scale=iw/2:ih/2, fade=alpha=1 [right]; [left][right] overlay=main_w/2:0 [out]" -c:a aac -b:v 3800k output.mp4
>ffmpeg -i output.mp4 -i right.mp4 -c copy -map 0:0 -map 1:1 -shortest output_with_audio.mp4
Changes:
- No fadeout
I successfully removed the fade out option/argument because it was causing me problems. If you want to use fade out then maybe change the numbers infade=out:300:30:alpha=1for your specific case. - Left video filling the whole left half and right video filling the whole right half
Instead of the right half only being two thirds full with the right video I changed it to be fully full with the video for the right half. - Fixed audio problems
I ran the second FFmpeg command because the first one (with all the-vfstuff) seems to only use the audio from the contents of-iand not the contents ofmovie=. This is a problem if-iis a video with no audio and you want to use the audio frommovie=. The second ffmpeg command copies the video stream fromoutput.mp4and the audio stream fromright.mp4intooutput_with_audio.mp4.
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