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My WEB-sites can't play MP4-videos in Firefox

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Artsi

My WEB-sites (created by DreamWeaver CC v.13.2) include MP4-videos but Firefox can't open them, message "Can't play the video, the file is damaged" appears. Same videos work fine in Explorer (opened in Media Player which is default program for MP4-videos) or direct in Media Player. Firefox version is the latest 29.0.1. What's wrong?

My WEB-sites (created by DreamWeaver CC v.13.2) include MP4-videos but Firefox can't open them, message "Can't play the video, the file is damaged" appears. Same videos work fine in Explorer (opened in Media Player which is default program for MP4-videos) or direct in Media Player. Firefox version is the latest 29.0.1. What's wrong?

Solusi terpilih

https://support.mozilla.org/en-US/que.../1000712#answer-575386

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guigs
guigs

Solusi Terpilih

https://support.mozilla.org/en-US/que.../1000712#answer-575386