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Sebastian Dröge authored
For MP4 this is not defined, and it actually breaks things for MSE in Chrome if we do this. For MOV this is required by some broken software but the official specification says it's optional: https://developer.apple.com/library/content/documentation/QuickTime/QTFF/QTFFChap3/qtff3.html https://bugzilla.gnome.org/show_bug.cgi?id=777540
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