The code will finish before it gets near the end of the video, since the video isn't at a constant FPS. So far I have not had any issue editing them with tools like OpenShot and Video ReDo. The Wiki says that to edit, I need a CFR copy of the video. Requirements x86 AviSynth+ or AviSynth 2.6. I read in the Wiki about Variable Frame Rate versus Constant Framerate. By specifying a constant target frame rate (CFR) in the form of a numerator and denominator that yield a frame rate higher than the average frame rate of variable frame rate (VFR) clip, the plugin will insert null frames (exact copies of previous frame (s)) where needed to keep the framerate constant. Print("%dth frame is %d seconds on video"%(count, count/fps)) I have a bunch of MP4 videos that I want to edit. you are allowed to choose Variable Framerate instead of Constant Framerate. Print("Loading video %d seconds long with FPS %d and total frame count %d " % (total_frame_count/fps, fps, total_frame_count)) The x265 HEVC Upgrade will change your default file association for MP4. Total_frame_count = int(video.get(cv2.CAP_PROP_FRAME_COUNT)) But when looking at the video in MediaInfo it shows the video file as a variable frame rate. I dont wanna mess up with any other part of the video except making constant the framerate. The online video web interface I use requires a constant frame rate. #fps = int(video.get(cv2.CAP_PROP_FPS)) # this will return 0! I want to change a video with variable framerate into constant. # manually set this, fps * time in seconds you wanna start from # forward over to the frames you want to start reading from. Here's is the code I'm trying to use to process a frame every second: video = cv2.VideoCapture(test_mp4_vod_path) However, the following error will occur: Undefined constant or missing '(' in 'copy' I've tried the following ffmpeg command from : ffmpeg -i input.webm -c:v copy -b:v copy -r 16 output.webm Quicktime MP4 29.97 or 30 frames per second Make sure you use a standard resolution like 640x360,720x405,1280x720,1920x1080 or 640x360 for standard def 4x3. webm video, which claims it has a framerate of 16 fps, to a video with a constant frame, so I can extract one frame for every second. Transcode Your Video First You need to transcode your video first using a 'real' encoder like Apple Compressor or Adobe Media Encoder. Therefore, I'm trying to convert a variable-frame. However, upon trying to process the video with OpenCV, it seems the video is recorded with a variable framerate, so when I try to use OpenCV to get a frame every second by getting the every 16th frame, it won't work since the video stream will end prematurely. webm file of a recording of a game at 16fps.
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