merge and concat video using ffmpeg












0















I have 2 videos both same resolution left.mp4 and right.mp4(1280*720).



Following are the transformations that I need to do:





  1. Stack these 2 both videos side-by-side, this results in a wide video with top and bottom padding.



    ffmpeg -i left.mp4 -i right.mp4 -filter_complex "[0:v][1:v]hstack=inputs=2,scale=1280:720" merged.mp4



  2. Next concat left.mp4 and merged.mp4:



    ffmpeg -i left.mp4 -i merged.mp4 -filter_complex "[v0][0:a][v1][1:a]concat=n=2:v=1:a=1[v][a]" -map [v] -map [a] concat.mp4



Resulting concat.mp4 has both videos, but merged.mp4 content is stretched instead of top and bottom padding. I want left.mp4 and merged.mp4 to have their own resolution with padding.



Not sure what I miss here.










share|improve this question

























  • Show the complete output of ffmpeg -n -i left.mp4 -i right.mp4. It will show info needed to provide an accurate answer.

    – llogan
    Feb 5 at 17:44
















0















I have 2 videos both same resolution left.mp4 and right.mp4(1280*720).



Following are the transformations that I need to do:





  1. Stack these 2 both videos side-by-side, this results in a wide video with top and bottom padding.



    ffmpeg -i left.mp4 -i right.mp4 -filter_complex "[0:v][1:v]hstack=inputs=2,scale=1280:720" merged.mp4



  2. Next concat left.mp4 and merged.mp4:



    ffmpeg -i left.mp4 -i merged.mp4 -filter_complex "[v0][0:a][v1][1:a]concat=n=2:v=1:a=1[v][a]" -map [v] -map [a] concat.mp4



Resulting concat.mp4 has both videos, but merged.mp4 content is stretched instead of top and bottom padding. I want left.mp4 and merged.mp4 to have their own resolution with padding.



Not sure what I miss here.










share|improve this question

























  • Show the complete output of ffmpeg -n -i left.mp4 -i right.mp4. It will show info needed to provide an accurate answer.

    – llogan
    Feb 5 at 17:44














0












0








0








I have 2 videos both same resolution left.mp4 and right.mp4(1280*720).



Following are the transformations that I need to do:





  1. Stack these 2 both videos side-by-side, this results in a wide video with top and bottom padding.



    ffmpeg -i left.mp4 -i right.mp4 -filter_complex "[0:v][1:v]hstack=inputs=2,scale=1280:720" merged.mp4



  2. Next concat left.mp4 and merged.mp4:



    ffmpeg -i left.mp4 -i merged.mp4 -filter_complex "[v0][0:a][v1][1:a]concat=n=2:v=1:a=1[v][a]" -map [v] -map [a] concat.mp4



Resulting concat.mp4 has both videos, but merged.mp4 content is stretched instead of top and bottom padding. I want left.mp4 and merged.mp4 to have their own resolution with padding.



Not sure what I miss here.










share|improve this question
















I have 2 videos both same resolution left.mp4 and right.mp4(1280*720).



Following are the transformations that I need to do:





  1. Stack these 2 both videos side-by-side, this results in a wide video with top and bottom padding.



    ffmpeg -i left.mp4 -i right.mp4 -filter_complex "[0:v][1:v]hstack=inputs=2,scale=1280:720" merged.mp4



  2. Next concat left.mp4 and merged.mp4:



    ffmpeg -i left.mp4 -i merged.mp4 -filter_complex "[v0][0:a][v1][1:a]concat=n=2:v=1:a=1[v][a]" -map [v] -map [a] concat.mp4



Resulting concat.mp4 has both videos, but merged.mp4 content is stretched instead of top and bottom padding. I want left.mp4 and merged.mp4 to have their own resolution with padding.



Not sure what I miss here.







video display-resolution ffmpeg






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Feb 5 at 17:44









llogan

5,2601737




5,2601737










asked Feb 5 at 12:11









Uday ReddyUday Reddy

1011




1011













  • Show the complete output of ffmpeg -n -i left.mp4 -i right.mp4. It will show info needed to provide an accurate answer.

    – llogan
    Feb 5 at 17:44



















  • Show the complete output of ffmpeg -n -i left.mp4 -i right.mp4. It will show info needed to provide an accurate answer.

    – llogan
    Feb 5 at 17:44

















Show the complete output of ffmpeg -n -i left.mp4 -i right.mp4. It will show info needed to provide an accurate answer.

– llogan
Feb 5 at 17:44





Show the complete output of ffmpeg -n -i left.mp4 -i right.mp4. It will show info needed to provide an accurate answer.

– llogan
Feb 5 at 17:44










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