If our input stream has no timestamps, how did it decide to drop frames for you, but duplicate them for me? Are the timestamps generated implicitly by the real wall clock time when the frames arrive over the pipe? Regardless, dropping and duplicating frames are both bad for this application.Import subprocess as sp command = pipe = sp. I don’t fully understand the behavior of the “output option”. Since our “input” is a stream of raw video frames over a pipe, it should not contain any timestamps at all, so it makes sense that we would need some mechanism of specifying timestamps like the “input” option.
Set frame rate (Hz value, fraction or abbreviation).Īs an input option, ignore any timestamps stored in the file and instead generate timestamps assuming constant frame rate fps.Īs an output option, duplicate or drop input frames to achieve constant output frame rate fps. I had to pass the r=framerate argument to the input() method instead of the output() method. input('pipe:', format='rawvideo', pix_fmt='rgb24', s='.h264’ for frame in I encountered a related problem - I was getting duplicated frames in my stream. You can figure out what the error was by looking in process.stderr, like so: import ffmpegĭef vidwrite(fn, images, framerate=60, vcodec='libx264'): Broken Pipe means the process errored and closed so there was no pipe to pipe input into. How do i save the video as the same size as the source using Were you able to figure out this problem? Because I am having the same problem with a Broken pipe error. input('/path/to/jpegs/*.jpg', pattern_type='glob', framerate=25) output saving there is no such file import ffmeg If i save each frame and give it to input, I get an error in the. Saved file is FULL HD 2 minutes clip in avi format with Data Rate 99532kbps Source file is FULL HD 2 minutes clip in avi format with Data Rate 7468kbps # Define the codec and create VideoWriter object I’m using OpenCV for processing a video, saving the processed video
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