[FFmpeg-user] Concatenate diffetents video size in one output.mp4

[Paul B Mahol]

On 9/8/17, Marcelo Laia <marcelolaia at gmail.com> wrote:
> Hi,
>
> I would like to concatenate two videos files.
>
> 1. 352 x 640
> 2. 640 x 352
>
> All others parameters are the same.
>
> I doing a lot of search on google and I tried:
>
> ffmpeg -i VID-20170820-WA0233_edit_A_B.mp4 -i VID-20170820-WA0233_edit_B.mp4
> -filter_complex
> "[0:v]scale=640:352:force_original_aspect_ratio=decrease,pad=640:352:(ow-iw)/2:(oh-ih)/2[v0];
> [v0][0:a][1:v][1:a]concat=n=2:v=1:a=1[v][a]" -map "[v]" -map "[a]" -c:v
> libx264
> -c:a aac -movflags +faststart output.mp4

This one should work from quick look.

>
> ffmpeg -i VID-20170820-WA0233_edit_A_B.mp4 -i VID-20170820-WA0233_edit_B.mp4
> -filter_complex
> '[0:v]pad=iw:ih*2:0:0[intv];[intv][1:v]overlay=(W-w)/2:H/2[vid]' -map [vid]
> -c:v libx264 -crf 22 -preset veryfast output.mp4

This is not concatination.

>
> MP4Box -cat video_640.mp4 -cat VID-20170820-WA0233_edit_B.mp4 -new
> output.mp4
>
> But, I don't got a joined videos.

What you get instead?

>
> Please, is it a way to join (concatenate) these two videos? The history: My
> daughter started a recording with her cellphone in a vertical and after 30
> seconds she rotate de cell to horizontally. So, the video start in vertical
> end
> rotate to horizontal. I split it with avidemux and got they in horizontal
> way
> (I rotate on with avidemux). Both, ffmpeg and avidemux not doing the job
> (concatenate).
>
> Thank you
>
> --
> Marcelo
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