Out of bounds frame requested

[kingcrimsonster]

This file is interlaced formally, in fact, the Top and Bottom fields are identical (the picture in them is not shifted in time). This can be easily verified by opening this file in Virtual Dub and opening Filters - Bob Doubler - Deinterlacing Method - None - Alternate Fields.
So I turn the Force and Auto Deinterlaser off and check Overwrite input scan type to progressive.
However, I tried this time to include different deinterlacers, but with the same result.

When I check LibavVideoSource instead of FFmpegSource - Avisynth Preview began to work without this error!

Does the issue also happen for you if you use the 'Avisynth Preview' and not the 'Avisynth Filter Preview' ?

No difference, still same error.

Regarding the "FFVideoSource: Out of bounds frame requested" try replacing

After this, Avisynth Preview working without this error in both modes: FFVideoSource and LibavVideoSource.

Please try to remux this file using ffmpeg in mkv and then open it in the mediainfo and pay attention to the frame rate.
I think, that the same input filter is used in the mkvtoolnix.
I try to remux this file using mkvtoolnix, then open mkv file in Mediainfo and and see this:

Frame rate mode : Variable
Frame rate : 50.000 FPS
Original frame rate : 25.000 FPS

I made a request about this problem, but Moritz Bunkus did not give a solution to this problem ...
Wrong FPS or Duration for interlaced source