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1. XVID4PSP CONVERT VARIABLE FRAME RATE TO CONSTANT AVISYNTH HOW TO
2. XVID4PSP CONVERT VARIABLE FRAME RATE TO CONSTANT AVISYNTH 64 BIT

For example, AssumeFPS(23.976) is converted to AssumeFPS(2997, 125) as can be checked with Info.Ĭhanges the frame rate by deleting or duplicating frames. To overcome this, a smart float-ratio is added internally, and the framerates are approximated accurately by ratios of small numbers.

XVID4PSP CONVERT VARIABLE FRAME RATE TO CONSTANT AVISYNTH 64 BIT

XVID4PSP CONVERT VARIABLE FRAME RATE TO CONSTANT AVISYNTH HOW TO

One of the reasons for this is, that those floats are approximations (remember that 24000/1001 = 23.9760239760.), so how should AviSynth know how to choose the correct ratio? In order to overcome this issue, the user can use AssumeFPS(24000,1001) or simply AssumeFPS("ntsc_film"). When specifying these floats, they are exported by AviSynth as ratios, but not as the standard ratios. Besides this AviSynth exports the framerate as a ratio, so when specifying a float, it will be converted to a ratio. The main issue is that users are allowed to specify the framerate as float, but the NTSC (FILM and Video) and PAL standards require ratios as framerate. From v2.57, the behaviour with respect to the framerate is a bit changed.This is useful when you want to add two clips with slightly different framerate. From v2.55, if clip2 is present, the framerate of clip1 will be adjusted to match the one of clip2.# (audio sample rate is changed by the same amount - in this case, by 24.00/29.97) #return AssumeFPS(24, sync_audio=false) # vdur=12.50, adur=9.00 (audio unchanged) If false (the default), the audio is unchanged this means the audio will lose synchronization over time. If true, the audio sample rate is changed by the same amount the pitch of the resulting audio is shifted. If supplied, the new framerate is taken from a set of standard rates, as shown below: If supplied, the new framerate is taken from clip2. If supplied, the new framerate is set to numerator divided by denominator. If supplied, the new framerate is set to fps.ĭue to the way frame rates are stored, fps must be converted to the closest ratio of 32-bit signed integers, Changes the frame rate without changing the frame count, causing the video to play faster or slower.ĪssumeFPS(clip clip, float fps )ĪssumeFPS(clip clip, int numerator )ĪssumeFPS(clip clip1, clip clip2 )ĪssumeFPS(clip clip1, string preset )