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Avisynth and Incorrect frame rate

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Версия от 09:22, 24 мая 2010; StasFomin (обсуждение | вклад) (Новая страница: «I frequently encounter situations, when avisynth in VirtualDub preview showed all OK, but on saving video it doubles frame rate! Please, consider small sample: ...»)

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I frequently encounter situations, when avisynth in VirtualDub preview showed all OK, but on saving video it doubles frame rate!


Please, consider small sample:

clock.avi
AVI file, 32496 frames, 57:30.90, record for system clock, from 16:32 to 17:30
clock.avs
Dummy AVISYNTH script (DirectShowSource("clock.avi"))
Download example archive (≈200Kb)
Файл:Clock.zip

If we open clock.avs in VirtualDub, and jump to frame at time 10:00, we see 16:42.

If we save the video (by VirtualDub, the codec does not matter) open saved video and jump to frame at time 10:00, we see 16:53.

What is going on? Is it bug or some feature?