Saving Configuration for all settings

[Selur]

Is it possible to use an external DV decoder?

For my DV avi camcorder videos I would like to use my own MainConcept_DV_Codec_v2.4.16 decoder.

Assuming that decoder installs a 64bit VFW decoder you could enable "Filtering->Vapoursynth->Prefer AviSource for .avi input" which will cause Hybrid to use AviSource as source filter if it finds a matching VFW decoder on the system. Assuming you do not have multiple 64bit VFW decoders on your system AviSource would then use your MainConvept DV Decoder.
If there is no 64bit vfw decoder for the format, Hybrid will not use AviSource in Vapoursynth.
When using 32bit Avisynth: a 32bit vfw dv decoder and enabling 'Filtering->Avisynth->Misc->Source->Prefer AviSource for avi input' would be required.
When using 62bit Avisynth: a 64bit vfw dv decoder and enabling 'Filtering->Avisynth->Misc->Source->Prefer AviSource for avi input' would be required.
When using mencoder as decoder: writing some custom codec settings would be required and it might still not work.
When using ffmpeg as decoder: no chance, ffmpeg does not support vfw decoders.

Something should be done under:
· Config>Input> Decoding> what after this?

Nope, those are general decoding setting and not Vapoursynth related.

Cu Selur