[FFmpeg-user] 16:9 to 2.35:1 and true HD 7.1 to DTS

Michael Koch astroelectronic at t-online.de
Thu Nov 3 21:53:18 EET 2022

Am 03.11.2022 um 20:17 schrieb Bartosz Trzebuchowski:
> Hi,
> I’m completely new to ffmpeg and have 2 questions:
> 1. How can I convert 16:9 movies to 2.35:1? My projector can’t scale down and 16:9 movies run outside my 2.35:1 canvas at the top and the bottom. I need to black out top and bottom so only 2.35:1 is visible.

Have a look at the documentation for the "pad" filter.
The following example might work, but I haven't tested it:

ffmpeg -i input.mp4 -vf pad=x=-1:y=-1:aspect=2.35 output.mp4


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