I am trying to understand how the default Windows 10 player (called "Films and TV") is able to play FHD (1920 x 1080 x 60fps) videos (shot with GoPro 4) and utilize only around 10% of the CPU, while other players namely VLC and GOM will utilize around 60-70% CPU.
I tried looking at GPU utilization, but even there while using the default Windows 10 player utilization is around 15% vs around 30% when using VLC and GOM.
Right now this looks like magic to me as FHD playback is taxing on the hardware and I can't figure out what is going on. I am thinking the difference will be in the decoder used, but can't find more information.
The CPU / GPU used are Core i5 5200U / Intel HD Graphics 5500
This is the info for a sample video file.
General
Format : MPEG-4
Format profile : Base Media / Version 1
Codec ID : mp41
File size : 2.61 GiB
Duration : 12mn 23s
Overall bit rate mode : Variable
Overall bit rate : 30.1 Mbps
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings, CABAC : Yes
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 12mn 23s
Bit rate mode : Variable
Bit rate : 30.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 59.940 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.241
Stream size : 2.60 GiB (99%)
Title : GoPro AVC
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 12mn 23s
Bit rate mode : Constant
Bit rate : 128 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 11.4 MiB (0%)
Title : GoPro AAC
VLC reports the following video output in: Tools -> Messages -> Module Tree -> playlist -> video output
window "qt4" (0x5a738fc)
vout display "direct3d" (0x5a57a34)
subpicture (0xf456b4)
spu text "freetype" (0x5a24264)
scale "yuvp" (0x5a70c1c)
scale "swscale" (0x55a1eac)
Tools -> Messages -> Module Tree -> playlist -> video output
say? – Gyan Mar 2 '16 at 7:29