Firefox HW H264 decoding is broken (5.17.6) when running inside sandboxie and youtube videos fail to play with a "Media resource could not be decoded" error in the web dev console. Running outside sandbox works perfectly with HW playback (after removing "media.hardware-video-decoding.failed" in about:config). I tried using Resource Access Monitor but I could not identify relevant missing Ipcs to make this work.
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{
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"id": "support@lastpass.com"
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"id": "add-to-searchbox@maltekraus.de"
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"id": "fdm_ffext@freedownloadmanager.org"
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}
],
"experiments": [],
"graphics": {
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"numAcceleratedWindows": 1,
"windowLayerManagerType": "Direct3D 11",
"windowLayerManagerRemote": true,
"supportsHardwareH264": "No; Failed to create H264 decoder",
"currentAudioBackend": "wasapi",
"adapterDescription": "Intel(R) HD Graphics 4000",
"adapterVendorID": "0x8086",
"adapterDeviceID": "0x0166",
"adapterSubsysID": "21f517aa",
"adapterRAM": "Unknown",
"adapterDrivers": "igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32",
"driverVersion": "10.18.10.4425",
"driverDate": "4-4-2016",
"adapterDescription2": "NVIDIA Quadro K2000M",
"adapterVendorID2": "0x10de",
"adapterDeviceID2": "0x0ffb",
"adapterSubsysID2": "21f517aa",
"adapterRAM2": "2048",
"adapterDrivers2": "C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvltwi.inf_amd64_7b29dba03a0b55ca\\nvd3dumx,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvltwi.inf_amd64_7b29dba03a0b55ca\\nvwgf2umx,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvltwi.inf_amd64_7b29dba03a0b55ca\\nvwgf2umx,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvltwi.inf_amd64_7b29dba03a0b55ca\\nvwgf2umx C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvltwi.inf_amd64_7b29dba03a0b55ca\\nvd3dum,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvltwi.inf_amd64_7b29dba03a0b55ca\\nvwgf2um,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvltwi.inf_amd64_7b29dba03a0b55ca\\nvwgf2um,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvltwi.inf_amd64_7b29dba03a0b55ca\\nvwgf2um",
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"driverDate2": "3-17-2017",
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"directWriteVersion": "10.0.15063.0",
"clearTypeParameters": "DISPLAY1 [ Gamma: 2.2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] DISPLAY4 [ Gamma: 2.2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] DISPLAY9 [ Gamma: 2.2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 100 ] ",
"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": "direct2d 1.1",
"AzureCanvasAccelerated": 0,
"AzureFallbackCanvasBackend": "cairo",
"AzureContentBackend": "direct2d 1.1",
"ApzWheelInput": 1,
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},
"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"
}
]
}
],
"fallbacks": []
},
"crashGuards": []
}
}