VFRtoCFR

Abstract
Author	Aktan
Version	20120730
Download	VFRtoCFR20120730.zip
Category	Frame Rate Converters
License	Open Source
Discussion	Doom9 Forum

Description

Converts a variable frame rate (VFR) video to a constant frame rate (CFR) video with the help of Matroska Version 2 Timecodes.

Requirements

• AviSynth 2.6 or greater
• Supported color formats: RGB24, RGB32, Y8, YV12, YV16, YV24

Syntax and Parameters

TimecodeFPS (clip, string "times", int "numfps", int "denfps", bool "dropped")

clip   = last

The clip to convert from VFR to CFR.

string  times = "times.txt"

The path to Matroska timecodes (v2).

int  numfps = 30000

The numerator of the CFR.

int  denfps = 0

The denominator of the CFR

bool  dropped = false

If true, it will throws an error if there are frames dropped in the conversion. Good to figure out if the CFR is set too low.

Examples

Convert a VFR video clip to CFR FILM (23.976fps):

FFVideoSource("myclip.mp4", timecodes="timecodes.txt")
VFRtoCFR(times="timecodes.txt", numfps=24000, denfps=1001)

AudioDub(FFAudioSource("myclip.mp4"))

Changelog

Version         Date            Changes

20120730        2012-07-30      - Rewrote the whole algorithm to be a lot smarter
20120528        2012-05-28      - Initial release

External Links

• GitHub - Source code
• GitHub - VapourSynth version

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