No. I was talking about changing SCART mode through the menu.
See above.

I could not do this.

May I ask why?

Idk it just isnt set to SCART only Video/SVideo/RGB

Sorry, not sure what you are trying to say.
Just change the setting and test the SCART -> dongle-> S-Video cable chain to see if your tape video became better.
You always can change your setting back.

Okay i'll try.

GUYS! I only now noticed that fact is Samsung SECAM VCR could transcoder ur MESECAM recording to a clean SECAM (I tried to copy and it has no color loss)