[ffmpeg]: overlay logo over vstack/hstack composition

[mapg]

Hi all,

I am having problems trying to add a logo on a vstack/hstack composition using ffmpeg.

I have tried numerous combinations but I can only add the logo over the first input video, but not over any position in the available space of the montage/composition.

I need to add the logo sometimes over the space used by the second input or the third, or over any other point.

My command line is as follow ...

./ffmpeg -i movie0 -i movie1 -i movie2 -i logo.png -filter_complex "vstack=inputs=3,drawtext=text=\'movie0\',drawtext=text=\'movie1\',drawtext=text=\'movie2\' -map 0:v? -map 1:v? -map 2:v? -pix_fmt yuv420p -c:v libx264 -an -y output

For example I cannot add the logo over the second video/input using ...

[1:v][3:v]overlay=x=50:y=240,vstack=inputs=3 ...

Any idea about how to be able to use any space of the composition to insert the logo via overlay?

Thank you very much in advance

Mapg

[sneaker]

Something like:

ffmpeg -i movie0 -i movie1 -i movie2 -i logo.png -filter_complex "[0:v]drawtext=text=\'movie0\'[a];[1:v]drawtext=text=\'movie1\'[b];[2:v]drawtext=text=\'movie2\'[c];[a][b][c]vstack=inputs=3[stack];[stack][3:v]overlay=x=50:y=240[out]" -map "[out]" -pix_fmt yuv420p -c:v libx264 -an -y output

?

[mapg]

Something like:

ffmpeg -i movie0 -i movie1 -i movie2 -i logo.png -filter_complex "[0:v]drawtext=text=\'movie0\'[a];[1:v]drawtext=text=\'movie1\'[b];[2:v]drawtext=text=\'movie2\'[c];[a][b][b]vstack=inputs=3[stack];[stack][3:v]overlay=x=50:y=240[out]" -map "[out]" -pix_fmt yuv420p -c:v libx264 -an -y output

?

Unfortunately, ffmpeg says ...

Invalid file index 3 in filtergraph description

[sneaker]

Did you forget one or more of the input files? (Always) post your complete command/log.

[mapg]

Did you forget one or more of the input files? (Always) post your complete command/log.

Yes, you are right. I forgot to add the input for the logo.

Your code is working fine. Thank you very much!! You were very kind!

Best regards,
Mapg