video-processing

来源： https://stackoverflow.com/questions/55757977/how-to-use-estimaterigidtransform-in-opencv-3-0-or-higher-is-there-any-other-al

来源： https://stackoverflow.com/questions/63960334/uploading-a-video-with-a-shareable-link-using-pydrive-but-it-doesnt-process

来源： https://stackoverflow.com/questions/63960334/uploading-a-video-with-a-shareable-link-using-pydrive-but-it-doesnt-process

来源： https://stackoverflow.com/questions/63471028/how-to-use-the-ffmpeg-overlay-cuda-filter-to-make-a-sbs-video

来源： https://stackoverflow.com/questions/1332586/how-can-i-mix-two-streams-of-video-in-c

来源： https://stackoverflow.com/questions/64160416/is-there-a-way-to-increase-speed-for-video-processing-with-opencv

来源： https://stackoverflow.com/questions/64160416/is-there-a-way-to-increase-speed-for-video-processing-with-opencv

来源： https://stackoverflow.com/questions/38253406/extract-list-of-specific-frames-using-ffmpeg

问题 The idea is that, user should be able to load a video from their local machine and tell the program to take a screenshot from the video every 5sec or 30sec. Is there any library to help me with this task? Any idea from how to proceed would be helpful. 回答1: install opencv-python (which is an unofficial pre-built OpenCV package for Python) by issuing the following command: pip install opencv-python # Importing all necessary libraries import cv2 import os import time # Read the video from

问题 I use this simple script to convert video to images using ffmpeg , but frame rate is fixed, how can I determine it automatically? FRAME_RATE="30" SEPARATOR='/' VIDEO_PATH=$1 VIDEO_BASE_DIR=`dirname $1` FRAMES_DIR=$VIDEO_BASE_DIR$SEPARATOR"Frames" rm -rf $FRAMES_DIR mkdir $FRAMES_DIR #Convert video to images ./ffmpeg -r $FRAME_RATE -i $VIDEO_PATH $FRAMES_DIR$SEPARATOR"image%d.png" UPDATE: By ffprobe I checked that my 1st video frame rate is 30. Also results are the same (339 frames are