Frames to video using cv2.VideoWriter() in Python 3

1

The original video size is say 1MB. I split the video into frames. . After that, if I write these frames to a video using cv2.VideoWriter() in python 3 then the size of this new video will be 2MB. Why the size of the video got increased?

2

most video files use compression. compression types and strengths vary.

this is not specific to OpenCV. it applies to video file formats in general.

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3

Thank you for the reply. Is there a way in opencv python or ffmpeg python to assemble frames to a video in such a way that the size remains same as the original?

4

what codec does the original file use?

5

using ffmeg.probe() I get this output-> codec_name’: ‘h264’, ‘codec_long_name’: 'H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10

6

why do you require the output video to be the same size as the input video? why does this matter to you?

you should perhaps use ffmpeg libraries directly.

7

Thank you for the reply. I think i can try with opencv-3