(indeed i'm referring to 1.37.826... so i edit my subject!)
I changed my parameters as you purpose but there is no change... (I will hope because "Allow intermediate filters" wasn't select ! But... )
I use the codec pack :
SLD Codec Pack and like you have supposed
VobSub.
So my codecs/filters :
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I hope it is what you want to have.
Thank for the answer !
And thank also, BSPeter, for the translation in french which help me to understand !