I just installed FFmpeg/FFDshow codec to try if they could work H264 with Opera ,Do you mean I will unintall them ?

GPU was loaded successfully,I have seen the GPU process

"Problems Detected
Some drivers are unable to reset the D3D device in the GPU process sandbox
Applied Workarounds: exit_on_context_lost
TexSubImage is faster for full uploads on ANGLE
Applied Workarounds: texsubimage_faster_than_teximage
Clear uniforms before first program use on all platforms: 124764, 349137
Applied Workarounds: clear_uniforms_before_first_program_use
Always rewrite vec/mat constructors to be consistent: 398694
Applied Workarounds: scalarize_vec_and_mat_constructor_args
ANGLE crash on glReadPixels from incomplete cube map texture: 518889
Applied Workarounds: force_cube_complete
On Intel GPUs MSAA performance is not acceptable for GPU rasterization: 527565
Applied Workarounds: disable_msaa_on_non_webgl_contexts
Framebuffer discarding can hurt performance on non-tilers: 570897
Applied Workarounds: disable_discard_framebuffer
Direct composition flashes black initially on Win <10: 588588
Applied Workarounds: disable_direct_composition
Accelerated rasterization has been disabled, either via about:flags or command line.
Disabled Features: rasterization
Native GpuMemoryBuffers have been disabled, either via about:flags or command line.
Disabled Features: native_gpu_memory_buffers"

My win7 is 64 bits and my graphic card is intel HD Graphics 4600 which does not support HW acceleration

Hi,Legco.
My WMP can play MP4 which encoded in H264,but still opera can't.
Here is opera://media-internals/ info:

"render_id: 172
player_id: 1
pipeline_state: kStopped
event: WEBMEDIAPLAYER_DESTROYED
url: http://h264.code-shop.com/demo/apache/workers_world_co64_box64.mp4?start=0&end=60
total_bytes: 50265908
streaming: false
single_origin: true
passed_cors_access_check: false
range_header_supported: true
pipeline_error: pipeline: initialization failed"

it display "initialization failed"

Thanks,leocg,My windows media player on Win7 can play H264，but opera can't play H264.

@leocg you mean OS should first support HW decode accelerate?

@sgunhouse OS is win 7.opera version is 41.

@leocg ,it does not play,for example ,also can't playback twitter video.
I notice @avl ever said,on Windows platform,Opera need system natively decode support,does it mean HW decode accelerate？or mean software decode on OS?

Could someone help?
Thanks a lot

Dear Opera developers
Due to Opera didn't support H264 natively,and for different platform ,there will be a different fix.So I just suggest could you kindly list detail seperated solutions on Linux/Windows/MAC,and I think it is very useful for our Opera fans
Anyone agree with me?

@avl you say "On Windows and Mac we solve this issue by providing a completely separate implementation, which uses the video libraries available on those systems natively (so that Opera is not redistributing the decoders ourselves). It requires some developers working full-time on maintaining this, but compared to the cost of the license, it's definitely worth it."
Could you descripte more details about this ,as I have installed FFmpeg codec libraries on my win7 and add avcodec.dll into syswow64 dir,but seems that opera does not care it?

Hi,all
Now I want to use opera browser to set up a p2p video conference(webrtc),but opera seems that can't play the remote H364 video stream
Could someone know how to decode H264 with opera on windows,As I know opera Linux version already have the solution.
P.S I just try to install FFmpeg/ffdshow on my win7 and also install wmp html5 plugin,but all no use.