Need help with ffmpeg

[Ollay]

Hi everyone,

I'm trying to add a 16:9 intro to videos for my mechbunny site using ffmpeg. So far i have the following filter which i found online:

ffmpeg -i intro.mp4 -i input.mp4 -filter_complex "[0][1]scale2ref=iw:ih[intro][main];[intro]drawbox=t=fill[intro-bg];[0][intro-bg]scale2ref=iw:ih:force_original_aspect_ratio=decrease:flags=spline[intro][intro-bg];[intro-bg][intro]overlay=x='(W-w)/2':y='(H-h)/2'[intro-resized]; [intro-resized][0:a][main][1:a]concat=n=2:v=1:a=1:unsafe=1[v][a]" -map '[v]' -map '[a]' -movflags +faststart -acodec aac -vcodec h264_nvenc -cbr true -b:v 1000k -bt 1000k -y -2pass true -threads 32 -profile:v high -r 30 -preset medium output.mp4

It works great unless the main video isn't 16:9. If it's a portrait video it will just be stretched out to fill the screen.

Does anyone know how i can adjust the filter to add black bars down the side of the video to keep it the correct aspect ratio? I'm struggling to get my head around the filters.

Thanks in advance

[Publisher Bucks]

See if this might be of use to answer your issue:

https://stackoverflow.com/questions/...h-aspect-ratio

Looks like they have a few lines of smaller code snippets posted that might do what you want

[plsureking]

mechbunny doesnt have video conversion?

you are looking for letterboxing..
https://www.google.com/search?q=lett...tterbox+ffmpeg



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[Ollay]

mechbunny doesnt have video conversion?

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It does, it has the option to enter your own ffmpeg command.

Thank you for the help guys but i've given up the problem is i can google and find each thing i want to do individually, but putting them all together in one command is the confusing part. I think i'm just going to pay someone to sort it for me