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技術支援討論區

I cannot view embedded videos from Twitter

已張貼

In Firefox on one of my forums I cannot view embedded videos from Twitter. All I see is a panel with "Twitter Placeholder". The problem does not exist on Chrome, Internet Explorer, or Microsoft Edge.

In Firefox on one of my forums I cannot view embedded videos from Twitter. All I see is a panel with "Twitter Placeholder". The problem does not exist on Chrome, Internet Explorer, or Microsoft Edge.
附加的畫面擷圖

被選擇的解決方法

AH! The Wonder of Windows! The problem has disappeared as mysteriously as it appeared!

從原來的回覆中察看解決方案 0

額外的系統細節

應用程式

  • Firefox 60.0.1
  • 使用者代理:Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0
  • 技術支援網址:https://support.mozilla.org/1/firefox/60.0.1/WINNT/en-US/

擴充套件

  • AdBlock 3.14.0 (jid1-NIfFY2CA8fy1tg@jetpack)
  • Avast Online Security 18.3.24 (wrc@avast.com)
  • Avast SafePrice 12.0.579 (sp@avast.com)
  • Awesome RSS 1.2.4 ({97d566da-42c5-4ef4-a03b-5a2e5f7cbcb2})
  • Chrome Store Foxified 3.4 (Chrome-Store-Foxified@jetpack)
  • Download all Images 0.3.4 ({32af1358-428a-446d-873e-5f8eb5f2a72e})
  • Easy Youtube Video Downloader Express 10.8 ({b9acf540-acba-11e1-8ccb-001fd0e08bd4})
  • F.B Purity - Cleans up Facebook (WX) 24.0.3.0 (fbpElectroWebExt@fbpurity.com)
  • Facebook Container 1.3.1 (@contain-facebook)
  • LastPass: Free Password Manager 4.10.1.0 (support@lastpass.com)
  • Swift Selection Search 3.21.0 (jid1-KdTtiCj6wxVAFA@jetpack)
  • Video DownloadHelper 7.2.2 ({b9db16a4-6edc-47ec-a1f4-b86292ed211d})

JavaScript

  • incrementalGCEnabled: True

圖形

  • adapterDescription: NVIDIA GeForce GTX 580
  • adapterDescription2:
  • adapterDeviceID: 0x1080
  • adapterDeviceID2:
  • adapterDrivers: C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c1a085cc86772d3f\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c1a085cc86772d3f\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c1a085cc86772d3f\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c1a085cc86772d3f\nvldumdx.dll C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c1a085cc86772d3f\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c1a085cc86772d3f\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c1a085cc86772d3f\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c1a085cc86772d3f\nvldumd.dll
  • adapterDrivers2:
  • adapterRAM: 1536
  • adapterRAM2:
  • adapterSubsysID: 00000000
  • adapterSubsysID2:
  • adapterVendorID: 0x10de
  • adapterVendorID2:
  • crashGuards: []
  • direct2DEnabled: True
  • directWriteEnabled: True
  • directWriteVersion: 10.0.16299.334
  • driverDate: 3-23-2018
  • driverDate2:
  • driverVersion: 23.21.13.9135
  • driverVersion2:
  • featureLog: {u'fallbacks': [], u'features': [{u'status': u'available', u'description': u'Compositing', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'HW_COMPOSITING'}, {u'status': u'available', u'description': u'Direct3D11 Compositing', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'D3D11_COMPOSITING'}, {u'status': u'available', u'description': u'Direct2D', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'DIRECT2D'}, {u'status': u'available', u'description': u'Direct3D11 hardware ANGLE', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'D3D11_HW_ANGLE'}, {u'status': u'available', u'description': u'GPU Process', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'GPU_PROCESS'}, {u'status': u'unavailable', u'description': u'WebRender', u'log': [{u'status': u'opt-in', u'message': u'WebRender is an opt-in feature', u'type': u'default'}, {u'status': u'unavailable', u'message': u"Build doesn't include WebRender", u'type': u'runtime'}], u'name': u'WEBRENDER'}, {u'status': u'available', u'description': u'Off Main Thread Painting', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'OMTP'}, {u'status': u'available', u'description': u'Advanced Layers', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'ADVANCED_LAYERS'}]}
  • info: {u'AzureContentBackend (UI Process)': u'skia', u'AzureCanvasBackend (UI Process)': u'skia', u'ApzWheelInput': 1, u'ApzDragInput': 1, u'ApzKeyboardInput': 1, u'AzureFallbackCanvasBackend (UI Process)': u'cairo', u'ApzAutoscrollInput': 1, u'AzureCanvasAccelerated': 0, u'AzureCanvasBackend': u'Direct2D 1.1', u'AzureContentBackend': u'Direct2D 1.1'}
  • isGPU2Active: False
  • numAcceleratedWindows: 1
  • numTotalWindows: 1
  • offMainThreadPaintEnabled: True
  • offMainThreadPaintWorkerCount: 0
  • usesTiling: False
  • webgl1DriverExtensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object
  • webgl1Extensions: 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
  • webgl1Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 580 Direct3D11 vs_5_0 ps_5_0)
  • webgl1Version: OpenGL ES 2.0 (ANGLE 2.1.0.7edc21933ef1)
  • webgl1WSIInfo: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000cb66) EGL_VERSION: 1.4 (ANGLE 2.1.0.7edc21933ef1) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses
  • webgl2DriverExtensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_multiview GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object
  • webgl2Extensions: EXT_color_buffer_float EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_texture_float_linear WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
  • webgl2Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 580 Direct3D11 vs_5_0 ps_5_0)
  • webgl2Version: OpenGL ES 3.0 (ANGLE 2.1.0.7edc21933ef1)
  • webgl2WSIInfo: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000cb66) EGL_VERSION: 1.4 (ANGLE 2.1.0.7edc21933ef1) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses
  • windowLayerManagerRemote: True
  • windowLayerManagerType: Direct3D 11
  • windowUsingAdvancedLayers: True

修改過的偏好設定

其他

  • User JS: 否
  • 輔助功能: 否
Shadow110 1072 個解決方法 14836 個答案

Hi, I would suggest that Avast & Adblock are the issues if you still see the placeholder. Please try below : 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 ?

Hi, I would suggest that Avast & Adblock are the issues if you still see the placeholder. Please try below : SAFE MODE *https://support.mozilla.org/kb/Safe+Mode *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes 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 ?

提出問題者

Thank you. Removing the aVast add ons solved the problem.

However since I use the equivalent add-ons in the other browsers I would suggest that there is perhaps a deeper problem.

Thank you. Removing the aVast add ons solved the problem. However since I use the equivalent add-ons in the other browsers I would suggest that there is perhaps a deeper problem.

由 Hairy Scot 於 修改

提出問題者

However since I use the equivalent add-ons in the other browsers I would suggest that there is perhaps a deeper problem.

However since I use the equivalent add-ons in the other browsers I would suggest that there is perhaps a deeper problem.

提出問題者

Pkshadow said

Hi, I would suggest that Avast & Adblock are the issues if you still see the placeholder. Please try below : 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 ?

The problem has reappeared and now also occurs in Safe Mode.

''Pkshadow [[#answer-1116438|said]]'' <blockquote> Hi, I would suggest that Avast & Adblock are the issues if you still see the placeholder. Please try below : SAFE MODE *https://support.mozilla.org/kb/Safe+Mode *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes 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 ? </blockquote> The problem has reappeared and now also occurs in Safe Mode.

由 Hairy Scot 於 修改

cor-el
  • Top 10 Contributor
  • Moderator
17584 個解決方法 159079 個答案

Firefox shows the shield icon at the left end of the location/address bar in case content is blocked by Tracking Protection.

  • click the shield icon for more detail and possibly disable the protection
  • check the Web Console for more detail about what content is blocked by Tracking Protection
  • "3-bar" menu button or Tools -> Web Developer

You can try to enable third-party cookies temporarily to see if that works. If that is the case then you need to create a cookie "Allow" exception for specific third-party domains. You can check in the Storage Inspector for what domains third-party cookies are created when you visit the website.

Firefox shows the shield icon at the left end of the location/address bar in case content is blocked by Tracking Protection. *click the shield icon for more detail and possibly disable the protection *check the Web Console for more detail about what content is blocked by Tracking Protection *"3-bar" menu button or Tools -> Web Developer *https://support.mozilla.org/en-US/kb/tracking-protection-firefox ---- You can try to enable third-party cookies temporarily to see if that works. If that is the case then you need to create a cookie "Allow" exception for specific third-party domains. You can check in the Storage Inspector for what domains third-party cookies are created when you visit the website. *https://developer.mozilla.org/en/Tools/Storage_Inspector

提出問題者

cor-el said

Firefox shows the shield icon at the left end of the location/address bar in case content is blocked by Tracking Protection.
  • click the shield icon for more detail and possibly disable the protection
  • check the Web Console for more detail about what content is blocked by Tracking Protection
  • "3-bar" menu button or Tools -> Web Developer

You can try to enable third-party cookies temporarily to see if that works. If that is the case then you need to create a cookie "Allow" exception for specific third-party domains. You can check in the Storage Inspector for what domains third-party cookies are created when you visit the website.

It is puzzling that this problem has resurfaced despite the fact that I have made no changes. Perhaps something has been changed in Firefox?

I have just reset Firefox and the problem persists.

What now?

''cor-el [[#answer-1121010|said]]'' <blockquote> Firefox shows the shield icon at the left end of the location/address bar in case content is blocked by Tracking Protection. *click the shield icon for more detail and possibly disable the protection *check the Web Console for more detail about what content is blocked by Tracking Protection *"3-bar" menu button or Tools -> Web Developer *https://support.mozilla.org/en-US/kb/tracking-protection-firefox ---- You can try to enable third-party cookies temporarily to see if that works. If that is the case then you need to create a cookie "Allow" exception for specific third-party domains. You can check in the Storage Inspector for what domains third-party cookies are created when you visit the website. *https://developer.mozilla.org/en/Tools/Storage_Inspector </blockquote> It is puzzling that this problem has resurfaced despite the fact that I have made no changes. Perhaps something has been changed in Firefox? I have just reset Firefox and the problem persists. What now?

由 Hairy Scot 於 修改

cor-el
  • Top 10 Contributor
  • Moderator
17584 個解決方法 159079 個答案

If you see the shield icon then this would indicate that this web page currently has content that is blocked by Tracking Protection.

Did you check the Web Console for more detail?

If you see the shield icon then this would indicate that this web page currently has content that is blocked by Tracking Protection. Did you check the Web Console for more detail? *"3-bar" menu button or Tools -> Web Developer *https://developer.mozilla.org/en/Tools/Web_Console

選擇的解決方法

AH! The Wonder of Windows! The problem has disappeared as mysteriously as it appeared!

AH! The Wonder of Windows! The problem has disappeared as mysteriously as it appeared!