rescale_video
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rescale_video [2017/08/17 19:08] – created walkeradmin | rescale_video [2023/03/09 22:35] (current) – external edit 127.0.0.1 | ||
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====== Rescale Video ====== | ====== Rescale Video ====== | ||
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+ | As well as transcoding video, we can rescale video, handy for converting HD to SD or UHD to HD. Rescaling can be done when transcoding, | ||
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+ | ---- | ||
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+ | This is how to rescale the video, where you specify the framesize: | ||
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+ | ffmpeg -i input.mov -vf scale=320: | ||
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+ | ---- | ||
+ | You can also rescale without specifying the exact aspect ratio, so here we have specified the width, and the height will be worked out automatically from the original aspect ratio. | ||
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+ | ffmpeg -i input.mp4 -vf scale=320: | ||
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+ | ---- | ||
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+ | To transcode and rescale in one go, you can use the following example: | ||
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+ | ffmpeg -i source.mov -vcodec h264 -b:v 50M -vf scale=960: | ||
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rescale_video.1502993332.txt.gz · Last modified: 2023/03/09 22:35 (external edit)