#Ffmpeg resize video keep aspect how to#
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For example, you could use -vf scale=640:480 to resize your video to 480p. Where, $w and $h denote the required width and height of the destination video. To use the scale filter, use the following command – ffmpeg -i input.mp4 -vf scale=$w:$h output.mp4 Using FFmpeg to scale or change the resolution of a video is done by the scale filter in FFmpeg. How do you Resize/Scale/Change the Resolution of a Video using FFmpeg?

Avoid Upscaling a Video based on the Input Video’s Dimensions.

Use Variables to Scale/Change Resolution of a Video in FFmpeg.

Specify the Height To Retain the Aspect Ratio Specify the Width To Retain the Aspect Ratio

#Ffmpeg resize video keep aspect how to#

How to Change the Video’s Resolution but Keep the Aspect Ratio?.

How to Resize Video While Keeping the Quality High with FFmpeg.

How do you Resize/Scale/Change the Resolution of a Video using FFmpeg?.

Note: You must note that the act of up/down scaling is a lossy process and will result in some loss of video quality. That’s great – you now know the video’s resolution and can scale or change the resolution now. The output of this command should be something like this 1920x1080 displayed on your console. ffprobe -v error -select_streams v:0 -show_entries stream=width,height -of csv=s=x:p=0 input.mp4 If you don’t have access to ffprobe, you can download it from OTTVerse’s FFmpeg build page. Using the ffprobe tool that’s shipped with the FFmpeg builds, let’s determine the resolution of an input video. So, as the very first step, let’s find out what the input video’s resolution is. For example, the input video’s resolution could be 1920x1080 and ABR bitstreams could be 1280x720, 640x480, etc. This is particularly true for ABR video streaming where a single video is taken as the source and compressed to several different bitrate-resolution combinations.

In this FFmpeg tutorial, we learn to change the resolution of a video (or resize/scale a video) using FFmpeg’s commandline tool.Ĭhanging a video’s resolution (also known as resizing or scaling) is a very common operation in video editing, processing, and compression. Marquise Technologies add support for SMPTE VC-6 to their ICE Prime playerĪltice Portugal Goes Live with Media Distillery to Improve User Experiences and Ad Effectiveness

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