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Firefox tab crashes when playing video

  • 7 replies
  • 2 have this problem
  • Last reply by pwpw

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My firefox gives crashes when playing video on pages.

I already tried: - Disable all extensions - Use default theme - Disabled all plugins - Disabled "Use hardware acceleration when available" - Refresh - Made new profile - Cleared Cookies and Cache - Reinstalled Firefox

The "about:crashes"-page shows multiple Unsubmitted Crash Reports

All Replies (7)

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In the address bar, type about:crashes<enter>. Note: If any reports do not have BP- in front of the numbers/letters, click it to submit them.

The crash report is several pages of data. We need the report numbers to see the whole report.

Using your mouse, mark the most recent 7 - 10 crash reports, and copy them. Now go to the reply box and paste them in.


For more help on crash reports, see;

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Type about:preferences#advanced<enter> in the address bar. Select Data Choices. Turn on Enable Crash Reporter.

Note: For Firefox 56+ its; about:preferences#privacy Under Firefox Data Collection turn on Allow Firefox To Send Crash Reports.

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Hi FredMcD,

Thanks for your reply. It is not very clear to me what you mean with "We need the report numbers to see the whole report." Do "the report numbers" refer to the "report ID" as shown in the image?

Here are these report ID's:


10/6/18 11:38 AM bp-cfa966ac-32a1-419a-8b67-256cc0181006 10/6/18 11:37 AM bp-f50084a2-f0b9-49e3-9732-ec1000181006 10/6/18 11:36 AM bp-78a00815-0a81-4294-84ea-56adf0181006 10/6/18 11:36 AM bp-4b223f72-7990-4a84-b710-1cf0e0181006 10/6/18 11:35 AM bp-f05a2e62-7450-4f3b-a424-6ea330181006 10/6/18 11:35 AM bp-a45dbaf6-4ffb-451c-82a2-7f9a10181006 10/6/18 11:34 AM bp-06c2bd3c-df44-43e7-8aff-ba56b0181006 10/6/18 11:34 AM bp-151d06e2-0b28-4e09-9240-8b8bc0181006 10/6/18 11:34 AM bp-89e7d8dd-5460-4aec-962d-a464e0181006 10/6/18 11:33 AM bp-484b62e8-2876-44ab-8cb6-385880181006 10/6/18 11:33 AM bp-b6106437-5051-40f9-945a-9ac900181006 10/6/18 11:32 AM bp-3f9dac9d-e42f-46a9-b92a-cff9c0181006 10/6/18 11:32 AM bp-cb85fdc3-3cb1-4527-8e48-c23620181006 10/6/18 11:30 AM bp-aa3d444c-5f7c-4e5b-8113-9e9510181006 10/6/18 11:29 AM bp-26965212-9f8e-4b8c-a13b-dc5c90181006 10/6/18 11:28 AM

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That is what we need. Report numbers without the 'bp-' in front have not been submitted to Mozilla, so we can't look at them.

As I don't know Linux, I called for more help.

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Any advances, FredMcD?

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Tired and do not fell like searching much.* mentioned in many of the crashes is related to FFmpeg which is used to fully support HTML5 players for video/audio like used by Youtube.

Bug 1435212 - Add support for FFmpeg 4.0 (libavcodec/libavformat v58)

Also could be a issue(s) with the third-party Ubuntu Firefox package of Firefox 62.0.3 as perhaps you could try Firefox 62.0.3 tarball from to see if you still get crashes in same use conditions. Just keep it simple like have the extracted tarbal be in a Firefox folder in Home

Modified by James

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Hi James,

Thanks for your reply!

The info about bug 1435212 is beyond my understanding.

Installing the tarball from did not solve the problem.

I have two versions of ffmpeg installed, one compiled by myself (something at the limit of my understanding..., but needed it). Any way, Chromium Web Browser does not have a problem with it...

Regards, pwpw

Modified by pwpw