[FFmpeg-user] ffprobe -show_frames and coded_picture_number
Richard H Lee
ricardohenrylee at gmail.com
Fri Aug 9 20:20:51 CEST 2013
I use ffprobe -show_frames to find out the exact frame rate of videos
that stray away from 24000/1001 fps before conversion to 25 fps so that
I can get accurate a/v sync when I speed up the audio.
I basically use pkt_pts_time / coded_picture_number of the very last
frame for the overall frame rate.
The problem is that on large files, it can take quite a while to dump
all the frame data.
Is it possible to just dump the last few frames / seconds of the file?
Or would this affect coded_picture_number? (I'm not sure if
coded_picture_number is counted by keeping track of frames/packets or is
stored within the packet itself.)
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