How to crop and deinterlace in Hybrid?

[VHS_UK]

Don't really know why you would use .avi as container, but if you were to use .avi an you wanted:

With the semi colon , I presume you were about to say something. So you think it better to use .mp4 as the container instead?

In general I would:
a. probably add tons of filtering before uploading VHS content to YouTube (denoise, degrain, deblocking, color corrections,...)
b. probably use x264 as video codec with a 1 pass quality encoding and a low crf (like 16).

Is it "constant rate factor (1-pass)" or "constant quaintizer (1-pass)" and then set the "Quantization factor" to 16?

It very trivial, but you misspelled in "Overwrite" in Config > Internals > Warnings