VidCoder dont use all the power from CPU

[Mohamet]

Hello, i have a server with an AMD Ryzen 7 3700X 8-Core! The most times my encode time are very bad and i see the Vidcoder dont using all the CPU power!
For example i check it now and i see using only 50% from the CPU!

[aedipuss]

slow hard drives could be the problem. source and destination need to be on different physical drives, and ssd is preferred for both.

[Mohamet]

slow hard drives could be the problem. source and destination need to be on different physical drives, and ssd is preferred for both.

I have 2 TB SSD drives so i dont believe this is the problem! But i dont have try your method! I will give an update in a few time about the different output drive folder!

UPDATE: I dont see any different about the encode speed when i select an other hard drive for the output file!

[davexnet]

Perhaps it's a thread thing. 8 core CPU, 16 threads, perhaps 8 threads is the optimal spot for x264

[poisondeathray]

It also depends on the settings - certain encoding settings in some situations can become a bottleneck

And resolution -What is your source video dimensions ?

And other processing such as filtering can become bottlenecks

[aedipuss]

maybe it's trying to use your gpu and it isn't up to the task? cpu task priority set too low? slow ram? av/security software interfering? could be lot's of things.

[jagabo]

Check the number of threads the encoder is using. Then try manually specifying more.

FYI, I thought x264 always used 1.5 times the number of processor threads. But on my 8c/16t CPU it only used 15 threads by default with 80 percent CPU usage (on a particular video). Bumping that up to 24 took it up to 100 percent CPU and greater throughput (with the same source).

If you're doing any other filtering that filtering may be your bottleneck.