[Fratti Franck]

and the result i found by myself (thank you all…. 😉
It’s a pleasant place here where no one help you.
so here’s the result

https://www.youtube.com/watch?v=y4ubyXw7PBE

i make a left , right , and black movie parts, and then i join all in a last one

1-Making a black video with correct aspect

ffmpeg -i “logo.mkv” -an -vf scale=320:232,pad=320:376:0:72,crop=16:16:16:16 -s 1920×720 -aspect 32:9 -codec:v libx264 -preset veryfast -qp 0 -f matroska -y black.mkv

2- Extracting the left part of the side by side video

ffmpeg -i “logo.mkv” -filter:v “crop=960:800:00:140” -s 800×630 -aspect 21:9 -codec:v libx264 -preset ultrafast -qp 0 -f matroska -y left.mkv

3- Extracting the Right part of the side by side video

ffmpeg -i “logo.mkv” -filter:v “crop=960:800:960:140” -s 800×630 -aspect 21:9 -codec:v libx264 -preset ultrafast -qp 0 -f matroska -y right.mkv

4-Making the final video with Black , left and right parts

ffmpeg -i “black.mkv” -s 1920×1080 -y -vf “movie=left.mkv[inner];movie=right.mkv[inner2];[in][inner] overlay=80:45 [step1];[step1][inner2] overlay=1040:45 [out]” -preset veryfast -qp 0 -vcodec libx264 3d-final.mkv

Thank you all,But i have a question.
It is possible to un-use the overlay part because in some (a lot in fact) videos there is and overlay buffer error.

Thanks

[Fratti Franck]

Hello,

Here’s an example of video Side by Side.
First, the original one : https://youtu.be/eSWbs9c_n-s
Seconde, Correct asspect : https://youtu.be/9u-00tfr42s
Third, correct asspect with black bars : https://youtu.be/lbeRcVMysp4

No Fourth one , because it’s the subject 😉

Thanks for searching …