How To Resize a Video Clip in Python

Question

I want to resize a video clip in python 2.7.

For example we give "movie.mp4" with 1080p quality The result should be "movie.mp4" with 360p quality

I Think that there should be solutions with Moviepy. If you know a solution with it.

I would be grateful if you answer me.

have you read the doc http://zulko.github.io/moviepy/ref/videofx/moviepy.video.fx.all.resize.html?highlight=resize#moviepy.video.fx.all.resize yet? — dragon2fly, Feb 06 '15 at 08:01

score 48 · Accepted Answer · edited Jul 04 '16 at 10:55

48

Here is how you resize a movie with moviepy: see the mpviepy doc here

import moviepy.editor as mp
clip = mp.VideoFileClip("movie.mp4")
clip_resized = clip.resize(height=360) # make the height 360px ( According to moviePy documenation The width is then computed so that the width/height ratio is conserved.)
clip_resized.write_videofile("movie_resized.mp4")

You can also tune the quality by adding the parameter bitrate="500k" or bitrate="5000k" in the last line.

As said above, you could also use ffmpeg directly, it will be simpler if you just need a quick script.

edited Jul 04 '16 at 10:55

Community

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answered Feb 06 '15 at 20:19

Zulko

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if you wish to freely set width and height without having to stick to relative scaling of w:h, you can use the `newsize` parameter, ex. `clip_resized = clip.resize(newsize=(my_width,my_height))` – Zahra May 06 '20 at 19:10

score 10 · Answer 2 · edited Feb 07 '15 at 12:27

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Why not ffmpeg?

ffmpeg -i movie.mp4 -vf scale=640:360 movie_360p.mp4

If you use 640:-2 then, in this example, the scale filter will preserve the aspect ratio and automatically calculate the correct height.

Look at the H.264 encoding guide for additional options.

edited Feb 07 '15 at 12:27

slhck

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answered Feb 06 '15 at 08:24

John Hua

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how can i use it in python? – Seyed Ali Akhavani Feb 06 '15 at 08:26
os.system("ffmpeg -i movie.mp4 -vf scale=640:360 movie_360p.mp4") – John Hua Feb 06 '15 at 08:27
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Please remember it's not always safe to use `os.system` to launch external programs. – Unknown Feb 06 '15 at 10:01
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If you use `640:-2` then, in this example, the scale filter will preserve the aspect ratio and automatically calculate the correct height. – llogan Feb 06 '15 at 23:59
Thx @LordNeckbeard. Very useful knowledge. – John Hua Feb 07 '15 at 01:28
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You could use `subprocess` to run the command... If any errors occur, you would be able to catch them. – Pyzard Nov 26 '20 at 22:51
I'm facing Error while getting media from postman and passing in to it ```subprocess.run(f'ffmpeg -i {media} -vcodec h264 -acodec mp2 temp_location/{new_uuid}')``` Error is : ```wa.mp4: No such file or directory``` – MdHassan413 Sep 28 '22 at 12:16

score 3 · Answer 3 · answered Dec 01 '21 at 08:47

Moviepy Resize function

>>> myClip.resize( (460,720) ) # New resolution: (460,720)
>>> myClip.resize(0.6) # width and heigth multiplied by 0.6
>>> myClip.resize(width=800) # height computed automatically.
>>> myClip.resize(lambda t : 1+0.02*t) # slow swelling of the clip

How To Resize a Video Clip in Python

3 Answers3

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