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Unread postby H shabshoul » 08 Aug 2018 08:38
When I play a high-quality 4K 60fps video, PotPlayer uses 100% CPU and 70% of the dedicated GPU and still stutters, skips lots of frames, and lose audio sync. Basically, the whole playback is messed up.
File and PC information linked below, I could say the file is too demanding given the Bitrate is 167mb/s but native players like Movies and TV and Windows Media Player had no problems what so ever even using as little as 15% CPU and 50% of Integrated GPU!
I tried all rendering methods it didn't work. My experience with PotPlayer was great with demanding files which other players couldn't play until this one? Maybe with this file, other players are not rendering the full data of the video? IDK.

PC Info: HP Spectre X360 i7-8550U Nvidia MX150

File info:

Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42 (mp41/isom)
File size : 493 MiB
Duration : 24 s 704 ms
Overall bit rate : 167 Mb/s
Movie name : 3v1 hanzo 4k
Encoded date : UTC 2018-07-27 14:20:18
Tagged date : UTC 2018-07-27 14:20:18

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.2
Format settings : 2 Ref Frames
Format settings, CABAC : No
Format settings, ReFrames : 2 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 24 s 700 ms
Bit rate : 167 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 60.000 FPS
Minimum frame rate : 60.000 FPS
Maximum frame rate : 60.060 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.336
Stream size : 493 MiB (100%)
Encoded date : UTC 2018-07-27 14:20:18
Tagged date : UTC 2018-07-27 14:20:18
mdhd_Duration : 24700

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : mp4a-40-2
Duration : 24 s 704 ms
Bit rate mode : Constant
Bit rate : 192 kb/s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 587 KiB (0%)
Encoded date : UTC 2018-07-27 14:20:18
Tagged date : UTC 2018-07-27 14:20:18
mdhd_Duration : 24704
Unread postby Khanh » 12 Aug 2018 04:41
the same to me.
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