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Firefox 101.0 is telling me I need a video codec but it does not say which one. How do I find out?

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Firefox says I need a video codec to play a video (that is aparently somewhere on the page). It does NOT tell me what video, what video format, or what codec I need. How do I find out what codec I need?

Firefox version: 101.0 (64 bit) OS: Fedora 36

Firefox says I need a video codec to play a video (that is aparently somewhere on the page). It does NOT tell me what video, what video format, or what codec I need. How do I find out what codec I need? Firefox version: 101.0 (64 bit) OS: Fedora 36

Chosen solution

Make sure you have the latest FFmpeg and libavcodec packages installed.

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Chosen Solution

Make sure you have the latest FFmpeg and libavcodec packages installed.

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