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Is there a way to change aspect ratio of video in MP4 container played via MSE in Firefox?

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Changing video's aspect ratio in WEBM container works correctly in Firefox browser. It can be done by setting appropriate DisplayWidth and DisplayHeight parameters. Regarding MP4 container, it seems that Firefox MSE doesn't support "pasp" (pixel aspect ratio) box like Chrome does. Is it possible to change video's aspect ratio in MP4 container in Firefox?