We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Om de ûnderfining foar jo te ferbetterjen is tydlik de funksjonaliteit dan dizze website troch ûnderhâldswurk beheind. Wannear in artikel jo probleem net oplost en jo in fraach stelle wolle, kin ús stipemienskip jo helpe yn @FirefoxSupport op Twitter en /r/firefox op Reddit.

Avatar for Username

Sykje yn Support

Mij stipescams. Wy sille jo nea freegje in telefoannûmer te beljen, der in sms nei ta te stjoeren of persoanlike gegevens te dielen. Meld fertochte aktiviteit mei de opsje ‘Misbrûk melde’.

Mear ynfo

Dizze konversaasje is argivearre. Stel in nije fraach as jo help nedich hawwe.

MP4 video problem in Firefox 35.0.1

  • 6 antwurd
  • 9 hawwe dit probleem
  • 3 werjeftes
  • Lêste antwurd fan CC001

DYR
DYR
more options

Hi Everyone,

I see that problems with MP4 playback are fairly common but I couldn't find a solution to my problem in any of the several questions and answers I've reviewed.

When I comment out the OGG code at http://www.deiryassin.org/video.html I cannot get the MP4 file to play. The OGG file play back in Firefox is just fine. Someone else who uses the latest version of Safari for the Mac OS was not able to get reliable MP4 playback, either. Per w3schools.com, MP4 is a supported fiie type in both Safari and Firefox.

I don't know how to embed HTML in this question so please see the attached PNG file for the code I used for testing MP4 playback. The MP4 file location is correct and the file is not corrupted, it plays fine when I download it.

When I try to play it in Firefox the browser console/error log says: "Specified 'type' attribute of 'video/mp4' is not supported. Load of media resource /media/deiryassinremembered.mp4 failed." The browser displays: "No video with supported format and MIME type found".

Here are the codecs for the file: Codec: H264 - MPEG-4 AVC (part 10) (avc1) Codec: MPEG AAC Audio (mp4a)

The following lines are in my .htaccess:

AddType video/mp4 mp4 m4v AddType audio/mp4 m4a

I've re-enabled the OGG source for visitors to the site. Any ideas on what I'm doing wrong?

Thanks.

Hi Everyone, I see that problems with MP4 playback are fairly common but I couldn't find a solution to my problem in any of the several questions and answers I've reviewed. When I comment out the OGG code at http://www.deiryassin.org/video.html I cannot get the MP4 file to play. The OGG file play back in Firefox is just fine. Someone else who uses the latest version of Safari for the Mac OS was not able to get reliable MP4 playback, either. Per w3schools.com, MP4 is a supported fiie type in both Safari and Firefox. I don't know how to embed HTML in this question so please see the attached PNG file for the code I used for testing MP4 playback. The MP4 file location is correct and the file is not corrupted, it plays fine when I download it. When I try to play it in Firefox the browser console/error log says: "Specified 'type' attribute of 'video/mp4' is not supported. Load of media resource /media/deiryassinremembered.mp4 failed." The browser displays: "No video with supported format and MIME type found". Here are the codecs for the file: Codec: H264 - MPEG-4 AVC (part 10) (avc1) Codec: MPEG AAC Audio (mp4a) The following lines are in my .htaccess: AddType video/mp4 mp4 m4v AddType audio/mp4 m4a I've re-enabled the OGG source for visitors to the site. Any ideas on what I'm doing wrong? Thanks.
Keppele skermôfbyldingen

Bewurke troch DYR op

Alle antwurden (6)

FredMcD
FredMcD
more options

I've called the big guys to help you. Good luck.

FredMcD
FredMcD
more options

Flash Player Test Page YouTube Test Page: What video does this browser support

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Both the MP4 file and the OGG file work for me on Linux (the latter takes some time to start up), so there is nothing wrong with the files. If the MP4 file doesn't play then it is possible that you do not have a codec to handle this file.

DYR
DYR Fraacheigener
more options

cor-el said

Both the MP4 file and the OGG file work for me on Linux (the latter takes some time to start up), so there is nothing wrong with the files. If the MP4 file doesn't play then it is possible that you do not have a codec to handle this file.

Thanks, cor-el, for letting me know the files work on a Linux machine. The MP4 file plays fine on this machine with the VLC Media Player. I wonder if the problem is that the MP4 file uses the H264 - MPEG-4 AVC (part 10) codec while Firefox perhaps only supports the "part 14" container.

DYR
DYR Fraacheigener
more options

deiryassin said

I wonder if the problem is that the MP4 file uses the H264 - MPEG-4 AVC (part 10) codec while Firefox perhaps only supports the "part 14" container.

I've ruled out part 10 vs. part 14. The Big Buck Bunny video used by the MDN uses the same part 10 video codec.

CC001
CC001
more options

Works fine in HTML5.

Here's the add-on if you feel like giving HTML5 a go https://addons.mozilla.org/en-us/firefox/addon/html5-video-everywhere/