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Sur d’autres sites (4063)

  • Making some simple video editing in python [closed]

    21 décembre 2023, par billy 356

    So I have a background.mp4 file, music.mp3
And a list of mp4 files like this : [1.mp4, 2.mp4, 3.mp4...] (these files are basically small images with a sound over them)

    


    In my python program, I want to add the music to the background.mp4 file, then for each file in my list, I want the file to be overlayed in the video (one after another at each time), and scaled at 75% and be placed at Y400, knowing that Y0 is the center.
The video will stop when there are no more files to add.

    


    I want to do this in python.
I tried using moviepy to do it, but exporting it took hours.
So I heard about ffmpeg-python, but I don't know how to use it.
I think it is easy, because that's some basic editing, but I don't know how to do it fast with python, any help would be appreciated !

    


  • Google Colab Runtime Error please install ffmpeg (version 4.2 is currently supported) andbuild torchvision from source

    4 juillet 2021, par Iman

    I'm using Google Colab to write a program using torch vision to extract frames from an mp4 video in my google drive. Thus far, I haven't wrote the full code yet but have been experimenting with torch vision.io library. Upon running the code, I get the following errors.

    


    Mounted at /content/gdrive&#xA;---------------------------------------------------------------------------&#xA;RuntimeError                              Traceback (most recent call last)&#xA; in <module>()&#xA;      6 &#xA;      7 video_path = "/content/drive/MyDrive/Training-Data-Videos/MASKED/00_MASKED_0_0.mp4"&#xA;----> 8 reader = torchvision.io.VideoReader(video_path, "video")&#xA;      9 reader.seek(2.0)&#xA;     10 frame = next(reader)&#xA;&#xA;/usr/local/lib/python3.7/dist-packages/torchvision/io/__init__.py in __init__(self, path, stream)&#xA;    106                 &#x2B; "to enable video_reader support, please install "&#xA;    107                 &#x2B; "ffmpeg (version 4.2 is currently supported) and"&#xA;--> 108                 &#x2B; "build torchvision from source."&#xA;    109             )&#xA;    110         self._c = torch.classes.torchvision.Video(path, stream)&#xA;&#xA;RuntimeError: Not compiled with video_reader support, to enable video_reader support, please install ffmpeg (version 4.2 is currently supported) andbuild torchvision from source.&#xA;&#xA;</module>

    &#xA;

    The code that I have written in the notebook so far is the following :

    &#xA;

    import os &#xA;import torchvision &#xA;from google.colab import drive&#xA;drive.mount(&#x27;/content/gdrive&#x27;, force_remount=True)&#xA;&#xA;video_path = "/content/drive/MyDrive/Training-Data-Videos/MASKED/00_MASKED_0_0.mp4"&#xA;reader = torchvision.io.VideoReader(video_path, "video")&#xA;reader.seek(2.0)&#xA;frame = next(reader)&#xA;print (frame)&#xA;&#xA;

    &#xA;

    To solve the problem, I tried to install ffmpeg on colab as this post says but it did not work. Can someone tell me what is the error ?

    &#xA;

  • Enable FFMPEG extension on google app engine

    23 mars 2015, par manish1706

    I am searching for the feature/cmd that can enable FFMPEG extension for php application over App Engine.

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