vorticartoon.blogg.se - I7 with quicksync

In OBS, set base and output resolution to 1280x720 and frame rate to 30.in OBS, create a new scene with one vlc video source and add the 1280x720p30 reference video.pick 2 reference frames, one from near the start of the video and one from near the end.Output codec again lossless (video codec utvideo, same as OBS uses) for the test of 1280x720p30 create a 1280x720p30 reference video by downscaling the original reference video to 1280x720p30 with ffmpeg.The video includes 2 low motion scenes and 2 high motion scenes, each about the same length. 2560x1440p60 lossless recording with OBS (simple output mode->"Lossless Quality, Tremendously Large File Size"). I created a 2 minute long reference video of my favorite game.don't use x264 preset=superfast or ultrafast for streaming, as they produce way worse output than even Quicksync.This will not interfere with your game at all. if you have Quicksync available, use Quicksync with preset=balanced.if you have NVENC available, use NVENC with preset=highquality.Only desktop i5 and i7 processors are probably able to encode better than veryfast while a CPU-demanding game is run in parallel. This will interfere with your game and your stream, if your CPU is not powerful enough.

if your computer is able to encode x264 preset=veryfast or better while running your game, use this.

So I recommend the encoders in this order: Quicksync on Skylake is better than on IvyBridge, but NVENC is still a bit better than both. Still correct is the ordering of NVENC and Quicksync: NVENC provides better visual quality than Quicksync. I was mislead by the mse numbers myself, but I cannot deny the x264 video definitely shows a bit more more detail in high motion parts. At least for high motion scenes.ĭownload the bitrate 2500 x264 and nvenc video and compare them with your eyes, and you will see more details in the second half of the video with x264 than with NVENC. However, I tested all presets (for example for NVENC such as: "Low-Latency", "Low-Latency High Performance").įrom this computer-generated rating with mainly the mse as criteria, you may come to the conclusion that NVENC is on par with x264 preset=veryfast (the default in OBS), or even a bit better, but unfortunately it isn't. This was done to not clutter the report with settings one will not use anyway. The report only includes the one preset that gives the best quality for each encoder. see post #25 for a comparison that includes VCE i7-6700k with GTX 1070 (QSV_Skylake with NVENC_Pascal) i5-3570k with GTX 670 (QSV_IvyBridge with NVENC_Kepler)

This is the result for OBS simple settings for streaming. The first level of comparison was made with ffmpeg (method see down below). Then I compared the quality of the resulting videos to the original lossless recording. So I made a autohotkey script and created recordings of literally every combination of every encoder setting. There are so many configuration options and there is so many different hardware available, so this is always very difficult to answer. If I use a hardware encoder, does the quality suffer? What encoder and which encoder setting should I use for streaming/for recording?