This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

ابحث في الدعم

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

I have .mp4, .m4v, and .mkv videos, all with embedded subtitles that I can see in VLC. How can I see the subtitles in Firefox?

more options

I have .mp4, .m4v, and .mkv videos, all with embedded subtitles that I can see in VLC.

How can I see the subtitles in Firefox? For now, subtitles are in both French and English.

I have .mp4, .m4v, and .mkv videos, all with embedded subtitles that I can see in VLC. How can I see the subtitles in Firefox? For now, subtitles are in both French and English.

All Replies (5)

more options

It is embedded in the video

more options

That is why I can see the subtitles when I open the video file with VLC. When I put the files on my website and open them from Firefox, I get audio and video and NOT subtitles, and I have found no controls to allow me to see the subtitles.

more options

hello,

follow the link:

[https://bugzilla.mozilla.org/show_bug.cgi?id=955901]

tell me when resolved your problem.

Thank you

more options

Not resolved.

Using Win10 1909 (2) Firefox 77.0.1 (64-bit)

On my website, I created and copied: filename.m4v filename.eng.srt filename.eng.vtt filename.fre.srt filename.fre.vtt

an then tried to play "filename.m4v" - video and audio played - no subtitles

more options

Hi walt.morrey, I don't have any personal experience with this kind of configuration, but there is an article on the MDN site that might help you set up your <video> tags in a way that Firefox will understand:

https://developer.mozilla.org/docs/Web/Guide/Audio_and_video_delivery/Adding_captions_and_subtitles_to_HTML5_video