Seems to be a bug in AviSource as previously posted here:
http://forum.doom9.org/showthread.ph...62#post1675662
Concerns techSmith TSCC2 codec, decoder only, found here:
https://support.techsmith.com/entrie...andalone-codec
2007 Thread with same unresolved problem here:
http://forum.doom9.org/showthread.ph...ce#post1062041
and a 27MB HD sample that exhibits the problem here :
http://www.mediafire.com/download/7v...r+avisynth.avi
(courtesy of user eduardobedoya, thank you)
DirectShowSource successfully loads and plays clip, AviSource produces lots of black frames, presumably drop frames.
Vdub current and VdubMod have no problems loading/playing/seeking sample.