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Firefox will not play any Youtube videos. I have downloaded all of the Flash addons and the HTML5 and they are active but still says not HTML5 supported

Posted

Youtube videos will not play in Firefox. I have Windows 10. I have updated everything. I have HTML5 plugin active and flash player but when I get to a youtube video it says "Your browser does not currently recognize any of the video formats available>"

Youtube videos will not play in Firefox. I have Windows 10. I have updated everything. I have HTML5 plugin active and flash player but when I get to a youtube video it says "Your browser does not currently recognize any of the video formats available>"

Chosen solution

There is no "plugin" to view HTML videos. That's the whole point of HTML5 - video playback by the web browser itself, without the need for any plugins. Or in the case of Flash, you don't need to install a separate plugin for Gecko / Plugin based or Trident / ActiveX based browsers.

With the recent changes made to YouTube pages all those YouTube add-ons you have installed may need to be updated.

I run no YouTube add-ons at all, and other that the Comments section loading in a delayed manner now vs a couple of weeks ago I am having no problems viewing the HTML5 videos.

And I haven't used the Flash 'toggle' in YouTube preferences for a couple of years now - HTML5 has worked fine since like Firefox 38 or even a bit earlier than that.

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Additional System Details

Installed Plug-ins

Open H264 Video Codec Widevine Content Decription module provided by Google

Application

  • Firefox 55.0.3
  • User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:55.0) Gecko/20100101 Firefox/55.0
  • Support URL: https://support.mozilla.org/1/firefox/55.0.3/WINNT/en-US/

Extensions

  • Flash and Video Download 2.07 ({bee6eb20-01e0-ebd1-da83-080329fb9a3a})
  • HTML5 Player for YouTube™ 0.1.4 (jid1-e3wSQaH5t1HqKp@jetpack)
  • YouTube Flash Video Player 54.0 ({f3bd3dd2-2888-44c5-91a2-2caeb33fb898})
  • YouTube High Definition 52.0.6 ({7b1bf0b6-a1b9-42b0-b75d-252036438bdc})
  • YouTube™ Flash-HTML5 0.1.4 (jid1-o2qEVrZ4t5FJWu@jetpack)
  • YouTube™ Flash® Player 2.0.2 (jid1-HAV2inXAnQPIeA@jetpack)
  • Covenant Eyes 0.8.1 (firefox-integrated-extension@covenanteyes.com) (Inactive)

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription: Intel(R) HD Graphics 520
  • adapterDescription2:
  • adapterDeviceID: 0x1916
  • adapterDeviceID2:
  • adapterDrivers: igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32
  • adapterDrivers2:
  • adapterRAM: Unknown
  • adapterRAM2:
  • adapterSubsysID: 06b21028
  • adapterSubsysID2:
  • adapterVendorID: 0x8086
  • adapterVendorID2:
  • crashGuards: []
  • currentAudioBackend: wasapi
  • direct2DEnabled: True
  • directWriteEnabled: True
  • directWriteVersion: 10.0.15063.413
  • driverDate: 1-18-2017
  • driverDate2:
  • driverVersion: 21.20.16.4590
  • 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'}]}
  • info: {u'AzureContentBackend (UI Process)': u'skia', u'AzureCanvasBackend (UI Process)': u'skia', u'ApzWheelInput': 1, u'ApzDragInput': 1, u'AzureFallbackCanvasBackend (UI Process)': u'cairo', u'AzureCanvasAccelerated': 0, u'AzureCanvasBackend': u'Direct2D 1.1', u'AzureContentBackend': u'Direct2D 1.1'}
  • isGPU2Active: False
  • numAcceleratedWindows: 1
  • numTotalWindows: 1
  • webgl1DriverExtensions: 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_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_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_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_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_shader_texture_lod EXT_texture_filter_anisotropic EXT_disjoint_timer_query MOZ_debug 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_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context MOZ_WEBGL_lose_context MOZ_WEBGL_compressed_texture_s3tc MOZ_WEBGL_depth_texture
  • webgl1Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 520 Direct3D11 vs_5_0 ps_5_0)
  • webgl1Version: OpenGL ES 2.0 (ANGLE 2.1.0.dec065540d5f)
  • webgl1WSIInfo: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000a0b9) EGL_VERSION: 1.4 (ANGLE 2.1.0.dec065540d5f) 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_nv12 EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource 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_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_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_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_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_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 MOZ_debug OES_texture_float_linear WEBGL_compressed_texture_s3tc WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context MOZ_WEBGL_lose_context MOZ_WEBGL_compressed_texture_s3tc
  • webgl2Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 520 Direct3D11 vs_5_0 ps_5_0)
  • webgl2Version: OpenGL ES 3.0 (ANGLE 2.1.0.dec065540d5f)
  • webgl2WSIInfo: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000a0b9) EGL_VERSION: 1.4 (ANGLE 2.1.0.dec065540d5f) 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_nv12 EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource 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

Modified Preferences

Misc

  • User JS: No
  • Accessibility: No
FredMcD
  • Top 10 Contributor
3160 solutions 42645 answers

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?

[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode 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?
Was this helpful to you? 7
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the-edmeister
  • Top 25 Contributor
  • Moderator
5094 solutions 37564 answers

Chosen Solution

There is no "plugin" to view HTML videos. That's the whole point of HTML5 - video playback by the web browser itself, without the need for any plugins. Or in the case of Flash, you don't need to install a separate plugin for Gecko / Plugin based or Trident / ActiveX based browsers.

With the recent changes made to YouTube pages all those YouTube add-ons you have installed may need to be updated.

I run no YouTube add-ons at all, and other that the Comments section loading in a delayed manner now vs a couple of weeks ago I am having no problems viewing the HTML5 videos.

And I haven't used the Flash 'toggle' in YouTube preferences for a couple of years now - HTML5 has worked fine since like Firefox 38 or even a bit earlier than that.

There is no "plugin" to view HTML videos. That's the whole point of HTML5 - video playback by the web browser itself, without the need for any plugins. Or in the case of Flash, you don't need to install a separate plugin for Gecko / Plugin based or Trident / ActiveX based browsers. With the recent changes made to YouTube pages all those YouTube add-ons you have installed may need to be updated. I run no YouTube add-ons at all, and other that the Comments section loading in a delayed manner now vs a couple of weeks ago I am having no problems viewing the HTML5 videos. And I haven't used the Flash 'toggle' in YouTube preferences for a couple of years now - HTML5 has worked fine since like Firefox 38 or even a bit earlier than that.
Was this helpful to you? 6
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Question owner

Thank you, I disabled everything and it works

Thank you, I disabled everything and it works
Was this helpful to you? 2
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schaloule 1 solutions 4 answers

I have the same problem and safe mode does allow playing html5. So it is an extension or plugin which causes the problem. BUT: trial and error is not a sophisticated way of troubleshooting.

I have a wealth of addons which make firefox usable to me compared to the ergonomically crippled default setup. Aren't there any log files which show me which extension may be the cause of the problem?

I have the same problem and safe mode does allow playing html5. So it is an extension or plugin which causes the problem. BUT: trial and error is not a sophisticated way of troubleshooting. I have a wealth of addons which make firefox usable to me compared to the ergonomically crippled default setup. Aren't there any log files which show me which extension may be the cause of the problem?
Was this helpful to you? 2
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FredMcD
  • Top 10 Contributor
3160 solutions 42645 answers

Helpful Reply

Is this problem on YouTube? Are you using any YouTube add-ons? Disable them.

Is this problem on YouTube? Are you using any YouTube add-ons? Disable them.
Was this helpful to you? 9
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schaloule 1 solutions 4 answers

Helpful Reply

Yes indeed, thanks for the hint. I had the youtube flash player extension and after I disabled it HTML5 playback works.

Yes indeed, thanks for the hint. I had the youtube flash player extension and after I disabled it HTML5 playback works.
Was this helpful to you? 9
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FredMcD
  • Top 10 Contributor
3160 solutions 42645 answers

Glad to help. Safe Surfing.

Glad to help. Safe Surfing.
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wrrr 0 solutions 2 answers

Scaffery said

Thank you, I disabled everything and it works

That worked for me too.

''Scaffery [[#answer-1005032|said]]'' <blockquote> Thank you, I disabled everything and it works </blockquote> That worked for me too.
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