I add and edit just only 720p (not even fullHD), just 60 seconds. And PC freeze for 2-5 seconds when editing. (core i5 4 cores, 4GB of RAM, SSD hard drive)
Option "Use video effects with hardware acceleration (needs SM 2.0)" in "Editing" tab of " Settings" is enabled. So I guess that hardware acc-n is used only for "effects" and may be for decoding when exporting Project.
Do I import wrong format of video? But it raw material from Youtube, which I need to use in my clips.
Morning .mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 20.6 MiB
Duration : 53s 683ms
Overall bit rate mode : Variable
Overall bit rate : 3 222 Kbps
gsst : 0
gstd : 53730
Video #1
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings, CABAC : Yes
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=60
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 53s 678ms
Bit rate : 3 027 Kbps
Maximum bit rate : 6 679 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.137
Stream size : 19.4 MiB (94%)
Tagged date : UTC 2016-09-23 21:51:12
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709