BUILD ID:20161116030212 STR 1. enable GPU video decoding(default with latest nightly) 2. Open some Youtube video with (as far as I tested) vp9 codec Expected result Video plays normally Actual Result Shows error All video plays normally when GPU video decoding is disabled

Graphics section in about:suppot Graphics -------- Features Compositing: Direct3D 11 Asynchronous Pan/Zoom: wheel input enabled; touch input enabled WebGL Renderer: Google Inc. -- ANGLE (AMD Radeon HD 7700 Series Direct3D11 vs_5_0 ps_5_0) WebGL2 Renderer: Google Inc. -- ANGLE (AMD Radeon HD 7700 Series Direct3D11 vs_5_0 ps_5_0) Hardware H264 Decoding: Yes; Failed to create D3D11 device for decoder; Using D3D9 API Audio Backend: wasapi Direct2D: true DirectWrite: true (10.0.14393.351) GPU #1 Active: Yes Description: AMD Radeon HD 7700 Series Vendor ID: 0x1002 Device ID: 0x683d Driver Version: 21.19.160.512 Driver Date: 11-3-2016 Drivers: aticfx64 aticfx64 aticfx64 amdxc64 aticfx32 aticfx32 aticfx32 amdxc32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64 Subsys ID: 00000000 RAM: 1024 Diagnostics ClearType Parameters: Gamma: 2.2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 200 AzureCanvasAccelerated: 0 AzureCanvasBackend: skia AzureContentBackend: skia AzureFallbackCanvasBackend: cairo GPUProcessPid: 10164 GPUProcess: Terminate GPU Process ClearType Parameters: Gamma: 2.2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 200 Decision Log D3D9_COMPOSITING: disabled by default: Disabled by default

I can reproduce the problem on Nightly53.0a1. https://hg.mozilla.org/mozilla-central/rev/79feeed4293336089590320a9f30a813fade8e3c Mozilla/5.0 (Windows NT 10.0; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0 ID:20161116030212 VP9 and VP8 fails to playback on test page[1] [1] http://base-n.de/webm/VP9%20Sample.html

[Tracking Requested - why for this release]: Breaking major site (youtube) and video format(VP9 and VP8) would not play.

See Arch Linux forum: https://bbs.archlinux.org/viewtopic.php?pid=1670152#p1670152 It does happen on FF50.

[Tracking Requested - why for this release]:

(In reply to francoism90 from comment #4) > See Arch Linux forum: > https://bbs.archlinux.org/viewtopic.php?pid=1670152#p1670152 > It does happen on FF50. it seems different bug. please file a new bug.

tracking 53+ since this breaks youtube.

https://hg.mozilla.org/mozilla-central/rev/28e2a6dde76ab6ad4464a3662df1bd57af04398a This build which is the lastest version of Nightly for 20161118030222 still occured the same error

I have reset firefox nightly via about:support and youtube would play. However, when I change dom.ipc.processCount in about:config from 1 to 8, youtube would not play.

(In reply to Taegeon Lee from comment #9) > I have reset firefox nightly via about:support and youtube would play. > However, when I change dom.ipc.processCount in about:config from 1 to 8, > youtube would not play. I think it is a bug from e10s

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Failed to create D3D11 device for decoder; Using D3D9 API", "currentAudioBackend": "wasapi", "adapterDescription": "Intel(R) HD Graphics 4000", "adapterVendorID": "0x8086", "adapterDeviceID": "0x0166", "adapterSubsysID": "181b103c", "adapterRAM": "Unknown", "adapterDrivers": "igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32", "driverVersion": "10.18.10.4358", "driverDate": "12-21-2015", "adapterDescription2": "NVIDIA GeForce GT 650M", "adapterVendorID2": "0x10de", "adapterDeviceID2": "0x0fd1", "adapterSubsysID2": "181b103c", "adapterRAM2": "2048", "adapterDrivers2": "C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvhmi.inf_amd64_1cf00dd97b91c6a1\\nvd3dumx,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvhmi.inf_amd64_1cf00dd97b91c6a1\\nvwgf2umx,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvhmi.inf_amd64_1cf00dd97b91c6a1\\nvwgf2umx,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvhmi.inf_amd64_1cf00dd97b91c6a1\\nvwgf2umx C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvhmi.inf_amd64_1cf00dd97b91c6a1\\nvd3dum,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvhmi.inf_amd64_1cf00dd97b91c6a1\\nvwgf2um,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvhmi.inf_amd64_1cf00dd97b91c6a1\\nvwgf2um,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvhmi.inf_amd64_1cf00dd97b91c6a1\\nvwgf2um", "driverVersion2": "21.21.13.7595", "driverDate2": "11-16-2016", "isGPU2Active": false, "direct2DEnabled": true, "directWriteEnabled": true, "directWriteVersion": "10.0.14931.1002", "webglRenderer": "Google Inc. -- ANGLE (Intel(R) HD Graphics 4000 Direct3D11 vs_5_0 ps_5_0)", "webgl2Renderer": "Google Inc. -- ANGLE (Intel(R) HD Graphics 4000 Direct3D11 vs_5_0 ps_5_0)", "info": { "AzureCanvasBackend": "skia", "AzureCanvasAccelerated": 0, "AzureFallbackCanvasBackend": "cairo", "AzureContentBackend": "skia", "ApzWheelInput": 1, "ApzTouchInput": 1 }, "featureLog": { "features": [ { "name": "HW_COMPOSITING", "description": "Compositing", "status": "available", "log": [ { "type": "default", "status": "available" } ] }, { "name": "D3D11_COMPOSITING", "description": "Direct3D11 Compositing", "status": "available", "log": [ { "type": "default", "status": "available" } ] }, { "name": "D3D9_COMPOSITING", "description": "Direct3D9 Compositing", "status": "disabled", "log": [ { "type": "default", "status": "disabled", "message": "Disabled by default" } ] }, { "name": "DIRECT2D", "description": "Direct2D", "status": "available", "log": [ { "type": "default", "status": "available" } ] }, { "name": "D3D11_HW_ANGLE", "description": "Direct3D11 hardware ANGLE", "status": "available", "log": [ { "type": "default", "status": "available" } ] }, { "name": "GPU_PROCESS", "description": "GPU Process", "status": "available", "log": [ { "type": "default", "status": "available" } ] } ], "fallbacks": [] }, "crashGuards": [] } }

sorry. it is not caused by dom.ipc.processCount. but firefox nightly would not play. If I find a certain cause, I will comment.

Matt, I bisected this YouTube regression to GPU video decoding bug 1315141.

This Streaming Video Provider video doesn't play either: https://www.streamingvideoprovider.com/streaming-video-players.html

Almost certainly a duplicate of bug 1318083.

I tried some builds with a patch of Bug 1318083. (Changeset:68240063e11a and a64eaf74ef8b) Things get worse than before. Not only vp9 movies, but also mp4 movies aren't played at all.

Per Comment #16 reopening

(In reply to Toshihiro Yamada from comment #16) > I tried some builds with a patch of Bug 1318083. > (Changeset:68240063e11a and a64eaf74ef8b) > > Things get worse than before. > Not only vp9 movies, but also mp4 movies aren't played at all. Do you have links to movies that is not working for you, I have yet to find anything that does not play properly with Today's Nightly, and the latest m-c builds.

(In reply to Jim Jeffery not reading bug-mail 1/2/11 from comment #18) > (In reply to Toshihiro Yamada from comment #16) > > I tried some builds with a patch of Bug 1318083. > > (Changeset:68240063e11a and a64eaf74ef8b) > > > > Things get worse than before. > > Not only vp9 movies, but also mp4 movies aren't played at all. > > Do you have links to movies that is not working for you, I have yet to find > anything that does not play properly with Today's Nightly, and the latest > m-c builds. I checked more and noticed it is different problem.(and I'm not sure whether this is a bug or not). Sorry for confusion.

Adjusting tracking flag to reflect this is "fixed" based on the dupe status.