[FFmpeg-user] Determine q factor from encoded video [H.264]

FFmichael michael.rampe at gmail.com
Tue Apr 2 09:51:25 CEST 2013

Is there a way (maybe with ffplay or ffprobe) to show the average q factor of
an already encoded video (or individual video frames)?

something like this that is shown after encoding:
[libx264 @ 0x7fdfeb82ae00] frame I:29    Avg QP:18.52  size: 74048
[libx264 @ 0x7fdfeb82ae00] frame P:1261  Avg QP:21.62  size: 17495
[libx264 @ 0x7fdfeb82ae00] frame B:3557  Avg QP:26.92  size:  2912

...or is this unknowable?


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