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pythonpython-3.xcodecopencv
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Reputation: 437

CV2, changing codec of a .mp4 file?

I created a few hundred .mp4 files with the wrong codec, I used

fourcc = cv2.VideoWriter_fourcc(*"XVID")

Instead of,

fourcc = cv2.VideoWriter_fourcc(*'MP4V')

Is it possible to change the codec without having to recreate all of the .mp4 files?

Upvotes: 1

Views: 620

Answers (1)

Jean-Marc Volle
Jean-Marc Volle

Reputation: 3333

Files are compressed using the codec you provided. You cannot change it. You need either to transcode them (from one codec to another: this is a lossy process). You could use ffmpeg library to do so, either by running a batch on the created files or using a python wrapper on ffmpeg

It would be easier I guess to re encode the original content with the good codec, no quality loss in that case.

Upvotes: 1

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