Hi, My goal is to extract the timestamps of a video using ffprobe. Currently, I do it with mkvextract like this: mkvextract FILE.mkv timestamps_v2 0:timestamps.txt.
I thought of extracting the timestamps like this: ffprobe -select_streams 0 -show_entries frame=pts_time -print_format json VIDEO.mkv. But I quickly realized that ffprobe takes a long time to execute this command (around 1 minute for a 7-minute video). That's why I tried to find a quicker way to extract the timestamps. I tried to use the timestamps of the packets like this: ffprobe -select_streams 0 -show_entries packet=pts_time -print_format json VIDEO.mkv. It is much faster (less than 1 second for a 7 minutes video). >From what I know, the pts_time provided with the packet may differ from the frame one because it's possible but uncommon for multiple frames to be carried in one packet, or for a frame to be split (as slices) across multiple packets. So, here is my question: is there a "heuristic" to know if the packet timestamps will be the same as the frame timestamps? My idea was that if the number of frames is different from the number of packets, then I need to use the frame timestamps. I thought of counting the frames and packets like this: ffprobe -select_streams 0 -show_entries stream=nb_read_frames,nb_read_packets -count_frames -count_packets -print_format json VIDEO.mkv. moi15moi _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
