Question / Help VBV buffer size cannot be smaller than one frame, using 254608 kbit errror

[Semel]

I've been trying to record streaming video at 23.976 fps but I didn't have any luck ;( 29.976 works fine.

Here is my log:

x264 encoder: 'recording_h264'] preset: fast
17:48:19.841: [x264 encoder: 'recording_h264'] profile: high
17:48:19.841: [x264 encoder: 'recording_h264'] tune: film
17:48:19.841: [x264 encoder: 'recording_h264'] settings:
17:48:19.841: bitrate: 6000
17:48:19.841: buffer size: 6000
17:48:19.841: crf: 18
17:48:19.841: fps_num: 23
17:48:19.841: fps_den: 976
17:48:19.841: width: 1920
17:48:19.841: height: 1080
17:48:19.841: keyint: 250
17:48:19.841: vfr: off
17:48:19.841: cbr: off
17:48:19.845: [x264 encoder: 'recording_h264'] VBV buffer size cannot be smaller than one frame, using 254608 kbit

I don't understand what buffer size should be..How do i calculate it based on my settings? Why recording worked with 29.976 fps with any buffer size but it doesn't work at 23.976 at all?

Thank you.

 

[R1CH]

You need to first understand how fractional FPS values work. You are currently trying to record at 0.02356557377049180327868852459016 FPS which is probably not your intention.

See https://en.wikipedia.org/wiki/Fraction_(mathematics) and http://avisynth.nl/index.php/FPS

 

[Semel]

Oh boy.. my bad;)

Thank you.