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Firefox error: video format or MME type is not supported

  • 7 respostas
  • 72 têm este problema
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  • Última resposta por AliceWyman

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Client said that video cannot load on firefox except other browsers. It shows "Video format or MIME type is not supported". Firefox version is 33.0.3. Video is mp4 format.

Client said that video cannot load on firefox except other browsers. It shows "Video format or MIME type is not supported". Firefox version is 33.0.3. Video is mp4 format.

Solução escolhida

Hello Everyone,

I thanks and appreciate for all of your suggestions. I resolved the problem that I posted. Actually, this error does not show on my firefox browser, shows on client's firefox only. To solve this problem, I also uploaded .webm format video type to support firefox browser that cannot play .mp4 format. Well Done Guys! Sorry for late reply.

Best Regards, Myat

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Todas as respostas (7)

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A work around is to download the clip, and use your other programs to watch it. Adobe players do not play everything.

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You wrote,

Client said that video cannot load on firefox except other browsers. It shows "Video format or MIME type is not supported". Firefox version is 33.0.3. Video is mp4 format.

Who is the "client" and what is the client's operating system ... also Windows 7 or something else? What media players or plugins are installed?

Could you post a link to a video that shows the error "Video format or MIME type is not supported"?

Related information:

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P.S. In case it helps, here are some mp4 video tests you can try (from mozillaZine's Testing plugins article) to see if they work for you in Firefox 33. (They both work fine for me on Windows 7 without needing a plugin.)

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myatyee91,

Are you still looking for a solution to the "Video format or MIME type is not supported" error?

In case it helps:

I found a related bug report indicating that problem videos were being served with a wrong "octet-stream" MIME type instead of the correct "video/mp4" type. (Please see Bugzilla Etiquette before commenting in bug reports)

  • Bug 975809 - Video format or MIME type is not supported. - should do content sniffing on video tag

I also found answers from previous questions with other solutions:

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Solução escolhida

Hello Everyone,

I thanks and appreciate for all of your suggestions. I resolved the problem that I posted. Actually, this error does not show on my firefox browser, shows on client's firefox only. To solve this problem, I also uploaded .webm format video type to support firefox browser that cannot play .mp4 format. Well Done Guys! Sorry for late reply.

Best Regards, Myat

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Thanks for posting back with the outcome, Myat. I marked your reply as the solution.