However, this do... sample_aspect_ratio=3/4 Remember, these modify the sample (pixel) aspect ratio. That is if you set the height, then set the width to -1 and vice-versa. ffmpeg -y -i import.media -aspect 16:9 scale=640x360,pad=640:480:0:60:black outpu... But, later I got video which aspect is not 4:3, but 16:9 and so on. User account menu. If you want to change the aspect ratio, you need to change the command again. and losing quality, ffmpeg won't do this. For example: ffmpeg -i input.mp4 -vf scale=320:240,setsar=1:1 output.mp4 When going from BGR (not RGB) to yuv420p the conversion is broken (off-by-one). ffmpeg -i in -vf scale=ih*4/3:ih,setsar=1 -c:a copy out.mp4 Crop and scale image using ffmpeg - Oodlestechnologies So I changed mm_ffmpeg.module to match what I need. So most generic appro... ffmpeg - Convert a video to a fixed screen size by cropping and ... To retain the aspect ratio of your video, you first need to input your video width specifics. If you have a file that should be wide-screen (16:9), but displays at. DAR = SAR * stored width / height Check the input aspect ratio. Then, we just need one command to change the resolution of a video: 1. ffmpeg -i input.mp4 -vf scale=-1 :720 output.mp4. In some cases, FFmpeg will set the Sample Aspect Ratio to compensate for the ratio change. Ich versuche, eine Video-AR mit ffmpeg wie folgt zu ändern: ffmpeg -i in.mp4 -aspect 16:9 -c copy out.mp4 ...und während dies im Grunde funk... Super User Kontakte. Scaling – FFmpeg Simply, scale it back to 4:3 and set a unit aspect ratio. Scale videos with a DAR > 7/4 width-wise (change the width to 700, and scale the height to keep the aspect ratio), and scale those with DAR < 7/4 height-wise. Although most of these answers are great, I was looking for a command that could resize to a target dimension (width or height) while maintaining a... Here we specify either width or height.

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