Проблемы с http://livejournal.com/ | Форум Mozilla Россия

Этот же браузер с чистым профилем нормально загружает видеоролик на этой странице (но не проигрывает). С действиями по этой инструкции https://forum.mozilla-russia.org/viewtopic.php?id=69941 видеоролик уже не только загружается, но и проигрывается.

Казалось бы, бери чистый профиль и радуйся. Но. Старый профиль удобно настроен. Не хочется от него отказываться. Хочется найти причину, почему в старом профиле не загружается видеоролик.

Набор плагинов в старом профиле и в чистом+"Включение поддержки MP4 (H.264 + AAC) HTML5-видео на Windows XP" одинаковый.

Аддоны все выключал и все удалял в старом профиле - это не поменяло ситуацию: в старом профиле вообще без аддонов всё равно видеоролик не загружается.

DOM Inspector и Web Developer Tools показывают, что фрейм с видеороликом

вообще не запрашивается с веб-сервера.
При этом, если в отдельной вкладке эту страницу (

Браузер особо никак специфически не изменялся.

Может, кто-нибудь подкинет мыслей, куда копать и смотреть?
Моя конфигурация:

скрытый текст

Application Basics
------------------

Name: Firefox
Version: 52.9.0
Build ID: 20180621064021
Update Channel: esr
User Agent: Mozilla/5.0 (Windows NT 5.1; rv:52.0) Gecko/20100101 Firefox/52.0
OS: Windows_NT 5.1
Multiprocess Windows: 0/2 (Disabled by add-ons)
Safe Mode: false

Crash Reports for the Last 3 Days
---------------------------------

All Crash Reports

Extensions
----------

Name: Advanced Locationbar
Version: 1.1.4
Enabled: true
ID: advancedlocationbar@veg.by

Name: Application Update Service Helper
Version: 2.0
Enabled: true
ID: aushelper@mozilla.org

Name: Browsec VPN - Free and Unlimited VPN
Version: 3.16.16
Enabled: true
ID: browsec@browsec.com

Name: Classic Add-ons Archive
Version: 2.0.1
Enabled: true
ID: ca-archive@Off.JustOff

Name: Classic Theme Restorer
Version: 1.7.7.2
Enabled: true
ID: ClassicThemeRestorer@ArisT2Noia4dev

Name: Custom Buttons
Version: 0.0.5.8.9.3
Enabled: true
ID: custombuttons-signed@infocatcher

Name: DOM Inspector
Version: 2.0.16.1-signed
Enabled: true
ID: inspector@mozilla.org

Name: Dr.Web Anti-Virus Link Checker
Version: 3.9.15.1310
Enabled: true
ID: {6614d11d-d21d-b211-ae23-815234e1ebb5}

Name: Enhancer for YouTube™
Version: 2.0.78
Enabled: true
ID: enhancerforyoutube@maximerf.addons.mozilla.org

Name: FoxyTab
Version: 1.3.2
Enabled: true
ID: foxytab@eros.man

Name: History AutoDelete
Version: 2.0.2
Enabled: true
ID: {7e79d10d-9667-4d38-838d-471281c568c3}

Name: IP Address and Domain Information
Version: 4.0.1.1
Enabled: true
ID: jid0-jJRRRBMgoShUhb07IvnxTBAl29w@jetpack

Name: Mailvelope
Version: 2.2.2
Enabled: true
ID: jid1-AQqSMBYb0a8ADg@jetpack

Name: Multi-process staged rollout
Version: 1.10
Enabled: true
ID: e10srollout@mozilla.org

Name: MySessions
Version: 2.11.0
Enabled: true
ID: balyaev@gmail.com

Name: Password Exporter
Version: 1.3.4
Enabled: true
ID: {B17C1C5A-04B1-11DB-9804-B622A1EF5492}

Name: PDF Mage
Version: 2.0.5
Enabled: true
ID: jid1-GeRCnsiDhZiTvA@jetpack

Name: PDFmyURL
Version: 1.1
Enabled: true
ID: {ad70f28a-ef26-48ed-80bb-2dc821d3e506}

Name: Pocket
Version: 1.0.5
Enabled: true
ID: firefox@getpocket.com

Name: Privacy Badger
Version: 2019.2.19
Enabled: true
ID: jid1-MnnxcxisBPnSXQ@jetpack

Name: QuickJava
Version: 2.1.2
Enabled: true
ID: {E6C1199F-E687-42da-8C24-E7770CC3AE66}

Name: Save as PDF
Version: 1.12
Enabled: true
ID: save-as-pdf-ff@pdfcrowd.com

Name: Save Page WE
Version: 13.3
Enabled: true
ID: savepage-we@DW-dev

Name: Self-Destructing Cookies
Version: 0.4.12
Enabled: true
ID: jid0-9XfBwUWnvPx4wWsfBWMCm4Jj69E@jetpack

Name: Session Manager
Version: 0.8.1.13
Enabled: true
ID: {1280606b-2510-4fe0-97ef-9b5a22eafe30}

Name: SingleFile
Version: 1.9.93
Enabled: true
ID: {531906d3-e22f-4a6c-a102-8057b88a1a63}

Name: Smart HTTPS
Version: 0.2.5
Enabled: true
ID: {b3e677f4-1150-4387-8629-da738260a48e}

Name: Smart Referer
Version: 0.2.10
Enabled: true
ID: smart-referer@meh.paranoid.pk

Name: Status-4-Evar
Version: 2017.08.20.15
Enabled: true
ID: status4evar@caligonstudios.com

Name: Tab Mix Plus
Version: 0.5.5.0
Enabled: true
ID: {dc572301-7619-498c-a57d-39143191b318}

Name: Tab Reloader (page auto refresh)
Version: 0.2.5
Enabled: true
ID: jid0-bnmfwWw2w2w4e4edvcdDbnMhdVg@jetpack

Name: Tampermonkey
Version: 4.8.5847
Enabled: true
ID: firefox@tampermonkey.net

Name: TrackMeNot
Version: 0.10.41
Enabled: true
ID: trackmenot@mrl.nyu.edu

Name: uBlock Origin
Version: 1.17.4
Enabled: true
ID: uBlock0@raymondhill.net

Name: UnMHT
Version: 8.3.2
Enabled: true
ID: {f759ca51-3a91-4dd1-ae78-9db5eee9ebf0}

Name: User-Agent Switcher
Version: 0.2.5
Enabled: true
ID: {75afe46a-7a50-4c6b-b866-c43a1075b071}

Name: Video Downloader professional
Version: 1.98.2
Enabled: true
ID: ffext_basicvideoext@startpage24

Name: Video DownloadHelper
Version: 6.3.3
Enabled: true
ID: {b9db16a4-6edc-47ec-a1f4-b86292ed211d}

Name: Web Compat
Version: 1.0
Enabled: true
ID: webcompat@mozilla.org

Name: Web to PDF
Version: 1.3
Enabled: true
ID: {18f8ea62-22ca-451e-b1f0-8df9df4430aa}

Name: RandomUA
Version: 1.1.0
Enabled: false
ID: {f12d78f2-b4e9-4a3e-9d2a-655fd45f1ab5}

Name: SaveFrom.net helper
Version: 8.10
Enabled: false
ID: helper-sig@savefrom.net

Graphics
--------

Features
Compositing: Basic
Asynchronous Pan/Zoom: none
WebGL Renderer: WebGL creation failed: * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Exhausted GL driver caps.
WebGL2 Renderer: WebGL creation failed: * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Exhausted GL driver caps.
Hardware H264 Decoding: No
Audio Backend: winmm
DirectWrite: false (0.0.0.0)
GPU #1
Active: Yes
Description: ATI Radeon 2100 Graphics
Vendor ID: 0x1002
Device ID: 0x796e
Driver Version: 8.561.0.0
Driver Date: 12-1-2008
Drivers: ati2dvag
Subsys ID: 00000000
RAM: Unknown

Diagnostics
AzureCanvasAccelerated: 0
AzureCanvasBackend: skia
AzureContentBackend: skia
AzureFallbackCanvasBackend: cairo
Decision Log
HW_COMPOSITING:
disabled by user: Disabled by pref
D3D11_COMPOSITING:
unavailable by default: Hardware compositing is disabled
D3D9_COMPOSITING:
unavailable by default: Hardware compositing is disabled
DIRECT2D:
unavailable by default: Direct2D requires Direct3D 11 compositing
D3D11_HW_ANGLE:
unavailable by default: D3D11 compositing is disabled
disabled by env: D3D11 compositing is disabled

Important Modified Preferences
------------------------------

accessibility.browsewithcaret: true
accessibility.lastLoadDate: 1553170355
accessibility.loadedInLastSession: true
accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 61440
browser.cache.disk.filesystem_reported: 1
browser.cache.disk.smart_size.enabled: false
browser.cache.disk.smart_size.first_run: false
browser.cache.frecency_experiment: 4
browser.download.folderList: 0
browser.download.importedFromSqlite: true
browser.places.importBookmarksHTML: false
browser.places.smartBookmarksVersion: 8
browser.search.openintab: true
browser.search.useDBForOrder: true
browser.sessionstore.max_tabs_undo: 5
browser.sessionstore.resume_from_crash: false
browser.sessionstore.upgradeBackup.latestBuildID: 20180621064021
browser.startup.homepage: about:blank
browser.startup.homepage_override.buildID: 20180621064021
browser.startup.homepage_override.mstone: 52.9.0
browser.tabs.animate: false
browser.tabs.closeWindowWithLastTab: false
browser.tabs.drawInTitlebar: false
browser.tabs.remote.autostart.2: true
browser.urlbar.clickSelectsAll: false
browser.urlbar.daysBeforeHidingSuggestionsPrompt: 0
browser.urlbar.decodeURLsOnCopy: true
browser.urlbar.doubleClickSelectsAll: true
browser.urlbar.lastSuggestionsPromptDate: 20170406
browser.urlbar.trimURLs: false
dom.apps.lastUpdate.buildID: 20161019084923
dom.apps.lastUpdate.mstone: 49.0.2
dom.apps.reset-permissions: true
dom.ipc.plugins.flash.disable-protected-mode: true
dom.max_chrome_script_run_time: 0
dom.mozApps.used: true
dom.push.userAgentID: aadad41fe6754603a96345f2b7fedd24
extensions.lastAppVersion: 52.9.0
font.default.x-cyrillic: sans-serif
font.internaluseonly.changed: true
font.language.group: x-cyrillic
font.minimum-size.x-cyrillic: 14
font.minimum-size.x-western: 14
font.name.monospace.x-western: FreeMono
font.name.sans-serif.x-cyrillic: Code2000
font.name.sans-serif.x-western: Code2000
font.name.serif.x-cyrillic: Code2000
font.name.serif.x-western: Code2000
font.size.fixed.x-cyrillic: 14
font.size.fixed.x-western: 16
font.size.variable.x-cyrillic: 14
gfx.crash-guard.d3d11layers.appVersion: 52.9.0
gfx.crash-guard.d3d11layers.deviceID: 0x796e
gfx.crash-guard.d3d11layers.driverVersion: 8.561.0.0
gfx.crash-guard.d3d11layers.feature-d2d: true
gfx.crash-guard.d3d11layers.feature-d3d11: true
gfx.crash-guard.status.d3d11layers: 2
gfx.direct2d.disabled: true
layers.acceleration.disabled: true
media.gmp-eme-adobe.abi: x86-msvc-x86
media.gmp-eme-adobe.enabled: true
media.gmp-eme-adobe.forceSupported: true
media.gmp-eme-adobe.lastUpdate: 1527331082
media.gmp-eme-adobe.version: 17
media.gmp-eme-adobe.visible: true
media.gmp-gmpopenh264.abi: x86-msvc-x86
media.gmp-gmpopenh264.enabled: true
media.gmp-gmpopenh264.lastUpdate: 1472589563
media.gmp-gmpopenh264.version: 1.6
media.gmp-manager.buildID: 20180621064021
media.gmp-manager.lastCheck: 1553107751
media.gmp-manager.url: https://aus5.mozilla.org/update/3/GMP/51.0/%BUILD_ID%/%BUILD_TARGET%/%LOCALE%/%CHANNEL%/%OS_VERSION%/%DISTRIBUTION%/%DIS
media.gmp-widevinecdm.abi: x86-msvc-x86
media.gmp-widevinecdm.lastUpdate: 1551616982
media.gmp-widevinecdm.version: 1.4.8.903
media.gmp.decoder.enabled: true
media.gmp.storage.version.observed: 1
media.hardware-video-decoding.failed: false
media.peerconnection.enabled: false
media.peerconnection.video.h264_enabled: true
media.webrtc.debug.aec_log_dir: c:\TEMP
media.webrtc.debug.log_file: c:\TEMP\WebRTC.log
network.cookie.cookieBehavior: 1
network.cookie.lifetimePolicy: 2
network.cookie.prefsMigrated: true
network.predictor.cleaned-up: true
network.standard-url.escape-utf8: false
places.database.lastMaintenance: 1553108380
places.history.expiration.transient_current_max_pages: 92912
plugin.disable_full_page_plugin_for_types: application/pdf,application/xaml+xml,audio/x-ms-wma,audio/x-ms-wax,video/x-ms-wm,application/x-ms-xbap,audio/basic,video
plugin.importedState: true
plugin.state.java: 2
plugin.state.npdrmv: 2
plugin.state.npdsplay: 2
plugin.state.npgoogleupdate: 1
plugin.state.npvlc: 2
plugin.state.npwmsdrm: 2
plugin.state.npwpf: 1
print.print_bgcolor: false
print.print_bgimages: false
print.print_duplex: -437918235
print.print_evenpages: true
print.print_in_color: true
print.print_margin_bottom: 0.5
print.print_margin_left: 0.5
print.print_margin_right: 0.5
print.print_margin_top: 0.5
print.print_oddpages: true
print.print_orientation: 0
print.print_page_delay: 50
print.print_paper_data: 0
print.print_paper_height: 11,00
print.print_paper_name:
print.print_paper_size_unit: 0
print.print_paper_width: 8,50
print.print_resolution: -437918235
print.print_reversed: false
print.print_scaling: 1,00
print.print_shrink_to_fit: true
print.print_to_file: false
print.print_unwriteable_margin_bottom: 0
print.print_unwriteable_margin_left: 0
print.print_unwriteable_margin_right: 0
print.print_unwriteable_margin_top: 0
privacy.clearOnShutdown.cookies: false
privacy.clearOnShutdown.downloads: false
privacy.clearOnShutdown.history: false
privacy.clearOnShutdown.offlineApps: true
privacy.clearOnShutdown.sessions: false
privacy.donottrackheader.enabled: true
privacy.sanitize.migrateClearSavedPwdsOnExit: true
privacy.sanitize.migrateFx3Prefs: true
privacy.sanitize.sanitizeOnShutdown: true
privacy.trackingprotection.enabled: true
privacy.trackingprotection.introCount: 20
security.disable_button.openCertManager: false
security.disable_button.openDeviceManager: false
security.sandbox.content.tempDirSuffix: {89087454-50da-4051-9361-c11b83d1f1f8}
security.ssl.errorReporting.automatic: true
services.sync.declinedEngines: tabs,addons,passwords,history,prefs,forms
services.sync.engine.addons: false
services.sync.engine.history: false
services.sync.engine.passwords: false
services.sync.engine.prefs: false
services.sync.engine.prefs.modified: false
services.sync.engine.tabs: false
services.sync.lastPing: 1553161071
services.sync.lastSync: Thu Mar 21 2019 13:06:49 GMT+0000 (Coordinated Universal Time)
services.sync.numClients: 2
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1552312164

Important Locked Preferences
----------------------------

Places Database
---------------

JavaScript
----------

Incremental GC: true

Accessibility
-------------

Activated: true
Prevent Accessibility: 0

Library Versions
----------------

NSPR
Expected minimum version: 4.13.1
Version in use: 4.13.1

NSS
Expected minimum version: 3.28.6
Version in use: 3.28.6

NSSSMIME
Expected minimum version: 3.28.6
Version in use: 3.28.6

NSSSSL
Expected minimum version: 3.28.6
Version in use: 3.28.6

NSSUTIL
Expected minimum version: 3.28.6
Version in use: 3.28.6

Experimental Features
---------------------

Sandbox
-------

Content Process Sandbox Level: 1

Код: