Aspect Ratio has no effect.

[HuakunShen]

Version information

• fluent-ffmpeg version: 2.1.3
• ffmpeg version: 7.0.1
• OS: MacOS 15.1

Code to reproduce

ffmpeg('input.mp4')
	.withAspectRatio('1:1')
	.save('output.mp4')

(note: if the problem only happens with some inputs, include a link to such an input file)

Expected results

The input is a 16:9 video, it should output a 1:1 video.

Observed results

Output is still 16:9. I checked the actual command run with htop, it's simply

ffmpeg -i input.mp4 -y output.mp4

I tested -aspect flag manually and it works fine when I use ffmpeg command directly.

Checklist

• I have read the FAQ
• I tried the same with command line ffmpeg and it works correctly (hint: if the problem also happens this way, this is an ffmpeg problem and you're not reporting it to the right place)
• I have included full stderr/stdout output from ffmpeg