Encoding settings (lost my cover)

Hello.

I have a problem with the original setting (unter 5.1):

(Copy)\Stream Copy to Mp4.xml

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Encoding setting:

 -f mp4 -c:v copy -c:a copy -sn

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If I copy my video file wiht this setting I lost my cover into the file.

Please: What is the right encoding setting that my file not lost the cover?

 

Thanks for your help.

Regards.