Здравствуйте.

Имею в [firefox] 52.9 ESR проблему с сайтом https://ru-chp.livejournal.com/12854495.html : не загружается видеоролик.

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

Выделить код

Код:

<iframe allowfullscreen="" src="https://vk.com/video_ext.php?oid=-34740837&id=456254317&hash=06ae29645fb74df1&hd=2" frameborder="0">

вообще не запрашивается с веб-сервера.
При этом, если в отдельной вкладке эту страницу ( https://vk.com/video_ext.php?oid=-34740 … 74df1&hd=2 ) загрузить, то она отлично загружается и видеоролик проигрывается.

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: 0/1 (Disabled by add-ons)
Safe Mode: false

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

All Crash Reports

Extensions
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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
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ID: browsec@browsec.com

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ID: ca-archive@Off.JustOff

Name: Classic Theme Restorer
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ID: ClassicThemeRestorer@ArisT2Noia4dev

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ID: custombuttons-signed@infocatcher

Name: DOM Inspector
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ID: inspector@mozilla.org

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

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ID: foxytab@eros.man

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

Name: MySessions
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ID: balyaev@gmail.com

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Name: Pocket
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Name: Privacy Badger
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ID: jid1-MnnxcxisBPnSXQ@jetpack

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Name: Save as PDF
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ID: save-as-pdf-ff@pdfcrowd.com

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

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ID: {1280606b-2510-4fe0-97ef-9b5a22eafe30}

Name: SingleFile
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ID: {531906d3-e22f-4a6c-a102-8057b88a1a63}

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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
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ID: {dc572301-7619-498c-a57d-39143191b318}

Name: Tab Reloader (page auto refresh)
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Name: Tampermonkey
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ID: firefox@tampermonkey.net

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

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Name: UnMHT
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ID: {b9db16a4-6edc-47ec-a1f4-b86292ed211d}

Name: Web Compat
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ID: webcompat@mozilla.org

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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: 1552936357
accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 61440
browser.cache.disk.filesystem_reported: 1
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browser.places.smartBookmarksVersion: 8
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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
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font.name.monospace.x-western: FreeMono
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font.name.serif.x-cyrillic: Code2000
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font.size.fixed.x-cyrillic: 14
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font.size.variable.x-cyrillic: 14
gfx.crash-guard.d3d11layers.appVersion: 52.9.0
gfx.crash-guard.d3d11layers.deviceID: 0x796e
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gfx.crash-guard.d3d11layers.feature-d2d: true
gfx.crash-guard.d3d11layers.feature-d3d11: true
gfx.crash-guard.status.d3d11layers: 2
gfx.direct2d.disabled: true
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Important Locked Preferences
----------------------------

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

JavaScript
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Incremental GC: true

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

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Prevent Accessibility: 0

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

NSPR
Expected minimum version: 4.13.1
Version in use: 4.13.1

NSS
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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


Спасибо.

тема - https://forum.mozilla-russia.org/viewtopic.php?id=11625