Can I upload .WMV file in design studio, if yes what is file limit .
Because when I am trying to upload its showing me uploading and progress bar but nothing progressing.
While most instances have a 1gb file limit, uploading a 100MB+ video file is probably a mistake.
Please host this on youtube or your main site for the best results for your audience.
This is correct, file storage in Marketo is principally for documents an images. Hosting(and especially streaming) a video on Marketo will not result in an optimal experience for your audience.