I don't repro it by using the provided url and any YouTube video on Linux+ Chrome 51.0.2704.7 build. Please upgrade to latest dev build and try again.

I have what I think is the same issue, here are the details:

After upgrading from Chrome version 49.0.2623.110 (64-bit) to version 50.0.2661.86 (64-bit) Youtube and Netflix video playback is broken (the video area is blank but the audio is fine).

- Observed in multiple 64-bit Ubuntu VirtualBox VMs (Ubuntu MATE
  14.04, Ubuntu MATE 16.04, Ubuntu GNOME 15.10).
  
- The problem is not related to the host hardware: same problem on a
  Dell XPS 27 and an HP AIO 27. 
  
- Console error during video playback:
  
  [1:3:0427/141500:ERROR:video_layer_impl.cc(369)] Not implemented reached in virtual void cc::VideoLayerImpl::AppendQuads(cc::RenderPass *, cc::AppendQuadsData *)
 
- Observed on VirtualBox versions 5.0.16 and 5.0.18 running on Windows 10 hosts.
  Virtual machine 2D and 3D display acceleration turned off (turning
  it on also has problems). 
  
- Same problem with google-chrome-unsable version 51.0.2704.19 dev.

- No problems with Firefox 45.0.2 in same environments.

- No problems with Chrome 49.0.2623.110 (64-bit).

- The problem only manifests itself after Chrome has been run for the
  first time. To demonstrate this:
  
  1. Move the Chrome config.

    mv ~/.config/google-chrome/ ~/.config/google-chrome.OLD

  2. Restart Chrome.
  3. Youtube WORKS.
  4. Close Chrome and open it again.
  6. Youtube DOES NOT WORK.

- See also
  https://www.reddit.com/r/chrome/comments/4f7mb2/chrome_v50_broke_html5_video_playback_netflix/

I have axactly the same problem srack...@gmail.com reports.

Problem is, that html5 video does not work with hardware accelaration turned on.
With the exception, that starting chrome/chromium without config, it seems to work. However, although chromium reports "hardware accelaration" to be turned on on startup, I am not sure if this is correct.

Not working versions are:
chrome 50 & 51
chromium 50

working versions:
chrome 49 and before
chromium 49 and before

I am running debian jessie amd64 on two systems with intel chipset (Broadwell and Skylake). Kernel is 4.5 from debian backports (other versions tested, but with the same result).

Juergen

I'm also having this issue, so [I did some bisecting][] (once I figured out how the hell to find valid build numbers):

You are probably looking for a change made after 373025 (known good), but no later than 373040 (first known bad).
CHANGELOG URL:
  https://chromium.googlesource.com/chromium/src/+log/42fa4626dcb8afe9f61639e8bd94fb0f2e61bfd7..43c3a86ac1fd4d81578bcbf95c1e8b56a34174be

I will try to track down the exact revision, but it may take me a bit as I predict the builds will take a while on my machine.

[I did some bisecting]: https://www.chromium.org/developers/bisect-builds-py

---

Appendix A: I ran `python bisect-builds.py -a linux64 --verify-range -g 369907 -b 386251 --use-local-cache -- --no-sandbox "https://www.youtube.com/watch?v=F2SXmzk8ve4"` to find the broken revision. The video clearly played or didn't play within the first 5 seconds for me.

Appendix B: I found the build number by (1) finding the git tags for the chrome version (2) looking back in the commit history for a commit that included the "Cr-Commit-Position: refs/heads/master@{#(\d+)}" pattern, and extracting the build number.

Using the --disable-gpu command-line option fixed the problem for me (Chrome version 50.0.2661.94 (64-bit)). This workaround was posted on https://www.reddit.com/r/chrome/comments/4f7mb2/chrome_v50_broke_html5_video_playback_netflix/

I think this is related to 373040. Compiling without this change fixed the issue for me on 50.0.2661.94. Thanks to burke for narrowing this down.

Launching with --disable-gpu-memory-buffer-video-frames also seems to work around the issue, without recompiling and without completely disabling GPU acceleration. Can anyone else confirm?

The --disable-gpu-memory-buffer-video-frames also seems to work (Chrome version 50.0.2661.94 (64-bit) running on Ubuntu 16.04 64 bit VirtualBox VM), but the VirtualBox VM hung while closing down (3 shutdowns in 6) so I switched back to --disable-gpu which hasn't yet given any trouble.

So, we've identified an issue and a workaround.

What's the next step in getting this fixed?

Hi, could you provide output of chrome://gpu . Thx

Also please try one of the 2 solutions from https://codereview.chromium.org/1968933003/patch/1/10001 .

Hi, I'm experiencing the same issue with chromium, running Arch on Virtualbox and Chromium (Versió 50.0.2661.102 (64-bit)). This is my chrome://gpu:

Graphics Feature Status
Canvas: Software only, hardware acceleration unavailable
Flash: Software only, hardware acceleration unavailable
Flash Stage3D: Software only, hardware acceleration unavailable
Flash Stage3D Baseline profile: Software only, hardware acceleration unavailable
Compositing: Software only, hardware acceleration unavailable
Multiple Raster Threads: Disabled
Native GpuMemoryBuffers: Software only. Hardware acceleration disabled
Rasterization: Software only, hardware acceleration unavailable
Video Decode: Software only, hardware acceleration unavailable
Video Encode: Software only, hardware acceleration unavailable
WebGL: Unavailable
Driver Bug Workarounds
clear_uniforms_before_first_program_use
count_all_in_varyings_packing
disable_post_sub_buffers_for_onscreen_surfaces
scalarize_vec_and_mat_constructor_args
Problems Detected
Accelerated 2d canvas is unstable in Linux at the moment
Disabled Features: accelerated_2d_canvas
Accelerated video decode is unavailable on Linux: 137247
Disabled Features: accelerated_video_decode
Disable VMware software renderer on older Mesa: 145531, 332596
Disabled Features: all
Clear uniforms before first program use on all platforms: 124764, 349137
Applied Workarounds: clear_uniforms_before_first_program_use
Mesa drivers in Linux handle varyings without static use incorrectly: 333885
Applied Workarounds: count_all_in_varyings_packing
Disable partial swaps on linux drivers: 339493
Applied Workarounds: disable_post_sub_buffers_for_onscreen_surfaces
Always rewrite vec/mat constructors to be consistent: 398694
Applied Workarounds: scalarize_vec_and_mat_constructor_args
Raster is using a single thread.
Disabled Features: multiple_raster_threads
Native GpuMemoryBuffers have been disabled, either via about:flags or command line.
Disabled Features: native_gpu_memory_buffers
Version Information
Data exported	15/5/2016 , 09:22:07
Chrome version	Chrome/50.0.2661.102
Operating system	Linux 4.5.4-1-ARCH
Software rendering list version	10.18
Driver bug list version	8.59
ANGLE commit id	unknown hash
2D graphics backend	Skia
Command Line Args	--window-depth=24 --flag-switches-begin --flag-switches-end
Driver Information
Initialization time	289
In-process GPU	false
Sandboxed	true
GPU0	VENDOR = 0x80ee, DEVICE= 0xbeef
Optimus	false
AMD switchable	false
Driver vendor	Mesa
Driver version	11.2.2
Driver date	
Pixel shader version	1.30
Vertex shader version	1.30
Max. MSAA samples	0
Machine model name	
Machine model version	
GL_VENDOR	VMware, Inc.
GL_RENDERER	Gallium 0.4 on llvmpipe (LLVM 3.8, 256 bits)
GL_VERSION	3.0 Mesa 11.2.2
GL_EXTENSIONS	GL_AMD_conservative_depth GL_AMD_draw_buffers_blend GL_AMD_seamless_cubemap_per_texture GL_AMD_shader_stencil_export GL_AMD_shader_trinary_minmax GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_APPLE_packed_pixels GL_APPLE_vertex_array_object GL_ARB_ES2_compatibility GL_ARB_ES3_compatibility GL_ARB_arrays_of_arrays GL_ARB_base_instance GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_clear_buffer_object GL_ARB_clip_control GL_ARB_color_buffer_float GL_ARB_compressed_texture_pixel_storage GL_ARB_conditional_render_inverted GL_ARB_conservative_depth GL_ARB_copy_buffer GL_ARB_debug_output GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_explicit_attrib_location GL_ARB_explicit_uniform_location GL_ARB_fragment_coord_conventions GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_get_program_binary GL_ARB_get_texture_sub_image GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_invalidate_subdata GL_ARB_map_buffer_alignment GL_ARB_map_buffer_range GL_ARB_multi_bind GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_occlusion_query2 GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_program_interface_query GL_ARB_provoking_vertex GL_ARB_robustness GL_ARB_sampler_objects GL_ARB_seamless_cube_map GL_ARB_seamless_cubemap_per_texture GL_ARB_separate_shader_objects GL_ARB_shader_bit_encoding GL_ARB_shader_objects GL_ARB_shader_stencil_export GL_ARB_shader_texture_lod GL_ARB_shading_language_100 GL_ARB_shading_language_420pack GL_ARB_shading_language_packing GL_ARB_shadow GL_ARB_stencil_texturing GL_ARB_sync GL_ARB_texture_border_clamp GL_ARB_texture_compression GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map GL_ARB_texture_cube_map_array GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_float GL_ARB_texture_gather GL_ARB_texture_mirror_clamp_to_edge GL_ARB_texture_mirrored_repeat GL_ARB_texture_multisample GL_ARB_texture_non_power_of_two GL_ARB_texture_query_levels GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_texture_rgb10_a2ui GL_ARB_texture_stencil8 GL_ARB_texture_storage GL_ARB_texture_storage_multisample GL_ARB_texture_swizzle GL_ARB_texture_view GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_transform_feedback_instanced GL_ARB_transpose_matrix GL_ARB_uniform_buffer_object GL_ARB_vertex_array_bgra GL_ARB_vertex_array_object GL_ARB_vertex_attrib_binding GL_ARB_vertex_buffer_object GL_ARB_vertex_program GL_ARB_vertex_shader GL_ARB_vertex_type_10f_11f_11f_rev GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_window_pos GL_ATI_blend_equation_separate GL_ATI_draw_buffers GL_ATI_separate_stencil GL_ATI_texture_compression_3dc GL_ATI_texture_env_combine3 GL_ATI_texture_float GL_ATI_texture_mirror_once GL_EXT_abgr GL_EXT_bgra GL_EXT_blend_color GL_EXT_blend_equation_separate GL_EXT_blend_func_separate GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_compiled_vertex_array GL_EXT_copy_texture GL_EXT_draw_buffers2 GL_EXT_draw_instanced GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_gpu_program_parameters GL_EXT_multi_draw_arrays GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_packed_pixels GL_EXT_pixel_buffer_object GL_EXT_point_parameters GL_EXT_polygon_offset GL_EXT_polygon_offset_clamp GL_EXT_provoking_vertex GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_specular_color GL_EXT_shader_integer_mix GL_EXT_shadow_funcs GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_subtexture GL_EXT_texture GL_EXT_texture3D GL_EXT_texture_array GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_latc GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc GL_EXT_texture_cube_map GL_EXT_texture_edge_clamp GL_EXT_texture_env_add GL_EXT_texture_env_combine GL_EXT_texture_env_dot3 GL_EXT_texture_integer GL_EXT_texture_lod_bias GL_EXT_texture_mirror_clamp GL_EXT_texture_object GL_EXT_texture_rectangle GL_EXT_texture_sRGB GL_EXT_texture_sRGB_decode GL_EXT_texture_shared_exponent GL_EXT_texture_snorm GL_EXT_texture_swizzle GL_EXT_timer_query GL_EXT_transform_feedback GL_EXT_vertex_array GL_EXT_vertex_array_bgra GL_IBM_multimode_draw_arrays GL_IBM_rasterpos_clip GL_IBM_texture_mirrored_repeat GL_INGR_blend_func_separate GL_KHR_context_flush_control GL_KHR_debug GL_MESA_pack_invert GL_MESA_texture_signed_rgba GL_MESA_window_pos GL_MESA_ycbcr_texture GL_NV_blend_square GL_NV_conditional_render GL_NV_depth_clamp GL_NV_fog_distance GL_NV_light_max_exponent GL_NV_packed_depth_stencil GL_NV_primitive_restart GL_NV_texgen_reflection GL_NV_texture_env_combine4 GL_NV_texture_rectangle GL_OES_EGL_image GL_OES_read_format GL_S3_s3tc GL_SGIS_generate_mipmap GL_SGIS_texture_border_clamp GL_SGIS_texture_edge_clamp GL_SGIS_texture_lod GL_SUN_multi_draw_arrays
Disabled Extensions	
Window system binding vendor	SGI
Window system binding version	1.4
Window system binding extensions	GLX_ARB_create_context GLX_ARB_create_context_profile GLX_ARB_fbconfig_float GLX_ARB_framebuffer_sRGB GLX_ARB_multisample GLX_EXT_create_context_es_profile GLX_EXT_create_context_es2_profile GLX_EXT_fbconfig_packed_float GLX_EXT_framebuffer_sRGB GLX_EXT_import_context GLX_EXT_texture_from_pixmap GLX_EXT_visual_info GLX_EXT_visual_rating GLX_MESA_copy_sub_buffer GLX_OML_swap_method GLX_SGI_make_current_read GLX_SGIS_multisample GLX_SGIX_fbconfig GLX_SGIX_pbuffer GLX_SGIX_visual_select_group
Window manager	Xfwm4
XDG_CURRENT_DESKTOP	XFCE
GDMSESSION	xfce
Compositing manager	Yes
Direct rendering	Yes
Reset notification strategy	0x8261
GPU process crash count	0
Compositor Information
Tile Update Mode	One-copy
Partial Raster	Disabled
GpuMemoryBuffers Status
ATC	Software only
ATCIA	Software only
DXT1	Software only
DXT5	Software only
ETC1	Software only
R_8	Software only
RGBA_4444	Software only
RGBX_8888	Software only
RGBA_8888	Software only
BGRX_8888	Software only
BGRA_8888	Software only
YUV_420	Software only
YUV_420_BIPLANAR	Software only
UYVY_422	Software only

I can play HTML5 video again with v51.0.2704.63-1 (stable)! Thanks for fixing this!