[FFmpeg-devel] [PATCH v13 2/4] libavformat/avisynth.c: Remove MAX_PATH limit

[nil-admirari at mailo.com]

> Why not use the AviSynth mechanism that allows to supply a UTF-8 string?
>
> https://github.com/AviSynth/AviSynthPlus/blob/c377916aa4146d2f4386852d91dc177d49103c16/avs_core/core/parser/script.cpp#L477-L481

Was not aware such a mechanism exists.

Commit dates back to 10 April 2017, first release supporting it is, apparently, Avisynth+ r2487-MT: https://github.com/pinterf/AviSynthPlus/releases/tag/r2489-MT.

A remark in https://github.com/FFmpeg/FFmpeg/blob/master/libavformat/avisynth.c#L844 says:

/* On Windows, FFmpeg supports AviSynth interface version 6 or higher.
 * This includes AviSynth 2.6 RC1 or higher, and AviSynth+ r1718 or higher,
 * and excludes 2.5 and the 2.6 alphas. */

Support for plain AviSynth will have to be dropped.

On the other hand, configure checks for https://github.com/FFmpeg/FFmpeg/blob/master/libavformat/avisynth.c#L844

> die "ERROR: AviSynth+ header version must be >= 3.7.1"

so probably plain AviSynth and AviSynth+ below r2489-MT are already unsupported.