Too slow to process the EPIC-KITCHENS-100 dataset

[Hou9612]

Hi, thanks for your work! When I use this code to process the process videos in the EPIC-KITCHENS-100 dataset to tfrecord file, I found that the processing speed is extremely slow (about 40 samples an hour, while the EPIC-KITCHENS-100 dataset contains more than 90,000 samples). The following below code is the main reason. cmd = ( ffmpeg .input(video_path) .trim(start=start, end=end) .filter("fps", fps=fps) .filter("scale", new_width, -1) .output("pipe:", format="image2pipe") ) jpeg_bytes, _ = cmd.run(capture_stdout=True, quiet=True)

I guess when extract frames from the video, it will process all frames before the end time, instead of localize the start time at first, so how to solve the problem?