Yes, you can!

When you retrieve your live stream URL from your settings page, it is provided as an HTTP URL. To use your live stream URL you need to enable it in your live stream settings first.
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If you try to use this URL on a page loaded using HTTPS, you may experience browser warnings, broken padlocks or otherwise reduced functionality.
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​To fix this, just switch http:// to https:// in your live stream URL.
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For example, your secure new live stream URL will look something like:
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​https://edge.mixlr.com/channel/abc23