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Bug de détection d’ogg
22 mars 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Video
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Sur d’autres sites (16555)
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Enable FFMPEG extension on google app engine
23 mars 2015, par manish1706I am searching for the feature/cmd that can enable FFMPEG extension for php application over App Engine.
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Google Colab Runtime Error please install ffmpeg (version 4.2 is currently supported) andbuild torchvision from source
4 juillet 2021, par ImanI'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
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call last)
 in <module>()
 6 
 7 video_path = "/content/drive/MyDrive/Training-Data-Videos/MASKED/00_MASKED_0_0.mp4"
----> 8 reader = torchvision.io.VideoReader(video_path, "video")
 9 reader.seek(2.0)
 10 frame = next(reader)

/usr/local/lib/python3.7/dist-packages/torchvision/io/__init__.py in __init__(self, path, stream)
 106 + "to enable video_reader support, please install "
 107 + "ffmpeg (version 4.2 is currently supported) and"
--> 108 + "build torchvision from source."
 109 )
 110 self._c = torch.classes.torchvision.Video(path, stream)

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.

</module>


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


import os 
import torchvision 
from google.colab import drive
drive.mount('/content/gdrive', force_remount=True)

video_path = "/content/drive/MyDrive/Training-Data-Videos/MASKED/00_MASKED_0_0.mp4"
reader = torchvision.io.VideoReader(video_path, "video")
reader.seek(2.0)
frame = next(reader)
print (frame)




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 ?


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ffmpeg : Print an error if avfilter_graph_queue_command() failed
15 mai 2015, par Michael Niedermayer