Checking keyframe interval?
ffmpeg, keyframe
Solution
You can display the timestamp for each frame with `ffprobe` with `awk` to only output key frame info. Works in Linux and macOS.
ffprobe -loglevel error -select_streams v:0 -show_entries packet=pts_time,flags -of csv=print_section=0 input.mp4 | awk -F',' '/K/ {print $1}'
Or a slower method that works on any OS and does not require `awk` or similar additional processing tools:
ffprobe -loglevel error -skip_frame nokey -select_streams v:0 -show_entries frame=pkt_pts_time -of csv=print_section=0 input.mp4
Results:
0.000000
2.502000
3.795000
6.131000
10.344000
12.554000
16.266000
17.559000
...
See the `ffprobe` documentation for more info.
Problem
How can I check keyframe interval of a video file? all I can see in ffmpeg output is: ``` Metadata: metadatacreator : Yet Another Metadata Injector for FLV - Version 1.8 hasKeyframes : true hasVideo : true hasAudio : true hasMetadata : true canSeekToEnd : true datasize : 256600272 videosize : 210054362 audiosize : 45214634 lasttimestamp : 5347 lastkeyframetimestamp: 5347 lastkeyframelocation: 256649267 Duration: 01:29:07.24, start: 0.040000, bitrate: 383 kb/s Stream #0:0: Video: h264 (High), yuv420p, 720x304 [SAR 1:1 DAR 45:19], 312 kb/s, 25 tbr, 1k tbn, 50 tbc Stream #0:1: Audio: mp3, 44100 Hz, mono, s16p, 64 kb/s ```