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no audio in video in firefox 60.0.1

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My system is Windows 7 on a Lenovo ThinkPad laptop. I've had no problem playing videos in Firefox until I upgraded yesterday to version 60.0.1. Now, a video plays but there is no audio. In the mixer, a column is shown for Firefox, the volume is up, and a green vertical line bounces up and down while the video is playing. But there's no sound. My sound card driver is up to date. I turned off the hardware acceleration. I have very few plugins installed, and those that are installed are working fine and were used in the previous Firefox version. The same video plays just fine with audio when using Chrome.

My system is Windows 7 on a Lenovo ThinkPad laptop. I've had no problem playing videos in Firefox until I upgraded yesterday to version 60.0.1. Now, a video plays but there is no audio. In the mixer, a column is shown for Firefox, the volume is up, and a green vertical line bounces up and down while the video is playing. But there's no sound. My sound card driver is up to date. I turned off the hardware acceleration. I have very few plugins installed, and those that are installed are working fine and were used in the previous Firefox version. The same video plays just fine with audio when using Chrome.

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Hi, you getting sound through other devices ?

VIDEO AUDIO

If possible with errors in your Video Card Drivers or so old do not support it please reinstall or update if at all possible :

u'unavailable = bad, disabled = bad

adapterDescription: Intel(R) HD Graphics Family driverDate: 4-4-2016

HW_COMPOSITING'}, {u'status': u'unavailable', u'description': u'Direct3D11 Compositing', u'log': [{u'status': u'unavailable', u'message': u'Hardware compositing is disabled', u'type': u'default'}], u'name': u'D3D11_COMPOSITING'}, {u'status': u'unavailable', u'description': u'Direct2D', u'log': [{u'status': u'unavailable', u'message': u'Direct2D requires Direct3D 11 compositing', u'type': u'default'}], u'name': u'DIRECT2D'}, {u'status': u'disabled', u'description': u'Direct3D11 hardware ANGLE', u'log': [{u'status': u'unavailable', u'message': u'D3D11 compositing is disabled', u'type': u'default'}, {u'status': u'disabled', u'message': u'D3D11 compositing is disabled',

SAFE MODE

In Firefox Safe mode these changes are effective:

  • all extensions are disabled (about:addons)
  • default theme is used (no persona)
  • userChrome.css and userContent.css are ignored (chrome folder)
  • default toolbar layout is used (file: localstore-safe.rdf)
  • Javascript JIT compilers are disabled (prefs: javascript.options.*jit)
  • hardware acceleration is disabled (Options > Advanced > General)
  • plugins are not affected
  • preferences are not affected

TEST''''is issue still there ?

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Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

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Pkshadow and FredMcd - thank you for our prompt responses. Firefox in safe mode had the same problem. The audio works for videos played in my Chrome browser and in VLC Media Player. I watched a GoToMeeting webinar today and the audio worked. The problem is only with Firefox 60.0.1.

Should I roll Firefox back to the previous version?

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Hi tom33pt, if you see Firefox sending audio to Windows in the mixer, but you do not see corresponding activity on the first slider (speakers or other output device), it could indicate that Firefox has lost track of the current output device and is sending audio to a previously used device (e.g., headphones). There might be a drop-down on the first column in the mixer to view the volume for additional output devices.

Sometimes, perhaps if the other device was used by Firefox in a previous session and then disconnected while Firefox was closed, Firefox doesn't detect the currently available device(s) correctly. I can't recall if there is a quick fix for this; some users have mentioned reconnecting and then re-disconnecting the other device, while Firefox is running, as a workaround.

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Hi jscher2000. You are correct that there is no activity in the first slider with Firefox, but there is with VLC Media Player and Chrome. I plugged in my headphone and got the same results, i.e. no sound with Firefox but sound with VLC and Chrome. There's no drop-down for additional output devices, and I've used no devices except my speakers and headphones. What other devices might there be?

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Unfortunately, I only know about what I posted from other users' comments. I'm not much of an audio user myself.