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Video playback is choppy

  • 21 uphendule
  • 2 zinale nkinga
  • 3962 views
  • Igcine ukuphendulwa ngu bob-m

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Going to the same website using Windows Explorer runs smoothly. I have installed Firefox 64.0.2. Is there anything else I can do before dumping FireFox?

Going to the same website using Windows Explorer runs smoothly. I have installed Firefox 64.0.2. Is there anything else I can do before dumping FireFox?

Isisombululo esikhethiwe

Your GPU is quite old and it's on this list (win7 hopefuly). It can be not that easy.

I'd

  1. set media.benchmark.vp9.fps = 0
  2. restart the browser.
  3. Then play a video, forcing the preference to be recreated.
  4. After this first restart, videos will probably play correctly.
  5. After another restart try setting media.benchmark.vp9.threshold to a value of 1 above or 1 below than media.benchmark.vp9.fps and test, which one is better for you.
Funda le mpendulo ngokuhambisana nalesi sihloko 👍 1

All Replies (20)

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Try Firefox Safe Mode to see if the problem goes away. Firefox Safe Mode is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes).

If Firefox is open, you can restart in Firefox Safe Mode from the Help menu:

  • Click the menu button New Fx Menu, click Help Help-29 and select Restart with Add-ons Disabled.

If Firefox is not running, you can start Firefox in Safe Mode as follows:

  • On Windows: Hold the Shift key when you open the Firefox desktop or Start menu shortcut.
  • On Mac: Hold the option key while starting Firefox.
  • On Linux: Quit Firefox, go to your Terminal and run firefox -safe-mode
    (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)

When the Firefox Safe Mode window appears, select "Start in Safe Mode".

SafeMode-Fx35

If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension, theme, or hardware acceleration. Please follow the steps in the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article to find the cause.

To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.

When you figure out what's causing your issues, please let us know. It might help others with the same problem.

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Thanks for your reply. Starting in Safe Mode has no effect on the hesitant playback. Microsoft Edge runs smoothly.

Okulungisiwe ngu bob-m

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Firefox depends on the Windows Media Feature Pack to play video. Sometimes this gets damaged during a Windows update, so I recommend reinstalling that pack and restarting your computer to see if that improves things.

The link to download the correct version of the Windows Media Feature Pack for your version of Windows can found in the Fix video and audio problems on Firefox for Windows N editions document.

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I followed all the links, but near the end, I got a message: Update is not applicable to your computer.

This morning, Wednesday, FF updated itself to version 65.0. The problem has not yet been addressed. :(

Playback is still hesitant.

Here is a link to a video that is choppy on FF but smooth using microsoft Edge: https://www.youtube.com/watch?v=6ZKSywmobMQ

Okulungisiwe ngu bob-m

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Go to about:config and check the value of media.benchmark.vp9.fps.

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Where is about:config , and how do I read it? I have a copy of about config.xul, but I don't recall where I got it.

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Just watched the video with firefox default and no playback issue. Are you using adblocker or addons that are causing the playback issue?

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bob-m said

Where is about:config , and how do I read it? I have a copy of about config.xul, but I don't recall where I got it.

If you open Firefox and type about:config in your Firefox address bar just like any other website, that will open the page that Ty is referring to.

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There are a lot of interesting settings there.

media.benchmark.vp9.fps. has a value of 16. Is that good?

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bob-m said

There are a lot of interesting settings there. media.benchmark.vp9.fps. has a value of 16. Is that good?

No. This is crazy small value. It also means that during watching youtube your playback will be run on software decoder and video will be very choppy.

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TyDraniu said:

No. This is crazy small value. It also means that during watching youtube your playback will be run on software decoder and video will be very choppy.

What number would you suggest? Does this refer to frames per second?

Okulungisiwe ngu bob-m

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I think your browser is corrupted or badly installed. I watched the same link and had no playback or stutter issues. And this is with default settings with a userChrome.css modification to it.

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I re-installed firefox, but it looks the same as my old version. Is there a way to install it at an address of my choice? I saved the bookmarks, expecting the fresh download to be empty.

OK, I figured how to make it install on a local disk (encrypted), but it still uses my old bookmarks, and still is very choppy.

Okulungisiwe ngu bob-m

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Reinstalling is useless. Now we have to find out, why your GPU doesn't work.

  1. Type about:support into the Firefox address bar and press the enter key.
  2. At the top of the Troubleshooting Information page that comes up, you should see a button that says "Copy text to clipboard". Click it.
  3. Now, go back to your forum post, right-click in the reply box and select Paste from the context menu (or else click inside the reply box and press the Ctrl+V keys) to paste the information you copied into the forum post.
    • Due to a forum reply character limit, only part of the data may be pasted. You can use your mouse to select the missing text from the about:support page, right-click on the page to copy it and then right-click in the forum reply box to paste it into a new reply.
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Application Basics


Name: Firefox Version: 65.0 Build ID: 20190124174741 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:65.0) Gecko/20100101 Firefox/65.0 OS: Windows_NT 10.0 Multiprocess Windows: 1/1 (Enabled by default) Web Content Processes: 4/4 Enterprise Policies: Inactive Google Key: Found Mozilla Location Service Key: Found Safe Mode: false

Crash Reports for the Last 3 Days


All Crash Reports Firefox Features


Name: Firefox Monitor Version: 2.8 ID: fxmonitor@mozilla.org

Name: Firefox Screenshots Version: 35.0.0 ID: screenshots@mozilla.org

Name: Form Autofill Version: 1.0 ID: formautofill@mozilla.org

Name: Web Compat Version: 3.0.0 ID: webcompat@mozilla.org

Name: WebCompat Reporter Version: 1.1.0 ID: webcompat-reporter@mozilla.org

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Graphics


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WebGL 1 Extensions ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_frag_depth EXT_sRGB EXT_shader_texture_lod EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context WebGL 2 Driver WSI Info EGL_VENDOR: Google Inc. 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default: WebRender is an opt-in feature WEBRENDER_QUALIFIED blocked by env: Not Nvidia Media Audio Backend wasapi Max Channels 2 Preferred Sample Rate 48000 Output Devices Name Group Vendor State Preferred Format Channels Rate Latency Speakers (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0662&SUBSYS_103C2AD1&REV_1001\4&9d18537&0&0001 Enabled All default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 144 - 480 Input Devices Name Group Vendor State Preferred Format Channels Rate Latency Line In (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0662&SUBSYS_103C2AD1&REV_1001\4&9d18537&0&0001 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0 Stereo Mix (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0662&SUBSYS_103C2AD1&REV_1001\4&9d18537&0&0001 Disabled None default: F32LE, support: S16LE F32LE 2 default: 44100, support: 44100 - 44100 0 - 0 Rear (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0662&SUBSYS_103C2AD1&REV_1001\4&9d18537&0&0001 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0 Microphone (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0662&SUBSYS_103C2AD1&REV_1001\4&9d18537&0&0001 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0 Microphone (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0662&SUBSYS_103C2AD1&REV_1001\4&9d18537&0&0001 Unplugged None default: F32LE, support: S16LE F32LE 2 default: 44100, support: 44100 - 44100 0 - 0 Subwoofer (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0662&SUBSYS_103C2AD1&REV_1001\4&9d18537&0&0001 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0 Center (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0662&SUBSYS_103C2AD1&REV_1001\4&9d18537&0&0001 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0 Line In (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0662&SUBSYS_103C2AD1&REV_1001\4&9d18537&0&0001 Unplugged None default: F32LE, support: S16LE F32LE 2 default: 44100, support: 44100 - 44100 0 - 0 Front (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0662&SUBSYS_103C2AD1&REV_1001\4&9d18537&0&0001 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0 Important Modified Preferences Name Value browser.cache.disk.capacity 1048576 browser.cache.disk.filesystem_reported 1 browser.cache.disk.smart_size.first_run false browser.sessionstore.upgradeBackup.latestBuildID 20190124174741 browser.startup.homepage_override.buildID 20190124174741 browser.startup.homepage_override.mstone 65.0 browser.tabs.drawInTitlebar false browser.urlbar.placeholderName Google browser.urlbar.timesBeforeHidingSuggestionsHint 0 dom.forms.autocomplete.formautofill true dom.push.userAgentID 12d8463a0d9e4049bc94d24a10a8f5ac extensions.lastAppVersion 65.0 layers.mlgpu.sanity-test-failed false media.benchmark.vp9.fps 19 media.benchmark.vp9.versioncheck 5 media.gmp-gmpopenh264.abi x86_64-msvc-x64 media.gmp-gmpopenh264.lastUpdate 1549213267 media.gmp-gmpopenh264.version 1.7.1 media.gmp-manager.buildID 20190124174741 media.gmp-manager.lastCheck 1549318333 media.gmp-widevinecdm.abi x86_64-msvc-x64 media.gmp-widevinecdm.lastUpdate 1549213270 media.gmp-widevinecdm.version 4.10.1146.0 media.gmp.storage.version.observed 1 media.hardware-video-decoding.failed false network.predictor.cleaned-up true places.database.lastMaintenance 1549221359 places.history.expiration.transient_current_max_pages 108474

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plugin.disable_full_page_plugin_for_types application/pdf privacy.sanitize.pending [{"id":"newtab-container","itemsToClear":[],"options":{}}] security.sandbox.content.tempDirSuffix {1031be66-127b-4d00-993d-f712c173da0e} security.sandbox.plugin.tempDirSuffix {bafe5a7f-f6c3-4aaf-a439-2eaa7dbe5461} services.sync.engine.addresses.available true signon.importedFromSqlite true storage.vacuum.last.index 1 storage.vacuum.last.places.sqlite 1549221356 ui.osk.debug.keyboardDisplayReason IKPOS: Touch screen not found. Important Locked Preferences Name Value Places Database Integrity JavaScript Incremental GC true Accessibility Activated false Prevent Accessibility 0 Accessible Handler Used false Accessibility Instantiator Library Versions Expected minimum version Version in use NSPR 4.20 4.20 NSS 3.41 3.41 NSSSMIME 3.41 3.41 NSSSSL 3.41 3.41 NSSUTIL 3.41 3.41 Sandbox Content Process Sandbox Level 5 Effective Content Process Sandbox Level 5 Internationalization & Localization Application Settings Requested Locales ["en-US"] Available Locales ["en-US"] App Locales ["en-US"] Regional Preferences ["en-US"] Default Locale "en-US" Operating System System Locales ["en-US"] Regional Preferences ["en-US"]

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Hope you can decipher all that.

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Isisombululo Esikhethiwe

Your GPU is quite old and it's on this list (win7 hopefuly). It can be not that easy.

I'd

  1. set media.benchmark.vp9.fps = 0
  2. restart the browser.
  3. Then play a video, forcing the preference to be recreated.
  4. After this first restart, videos will probably play correctly.
  5. After another restart try setting media.benchmark.vp9.threshold to a value of 1 above or 1 below than media.benchmark.vp9.fps and test, which one is better for you.
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Thank you for spending the time to help me out.

Setting the media.benchmark.cp9.fps to zero, then restarting changed the value to 15. Then I set ...threshold to one less, or 14. That did not help, but setting ... threshold to 16 did make a big difference. Not perfect, but a lot better. Are there any other "Tweaks" I should try?

Okulungisiwe ngu bob-m

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