chuckula wrote:That's when you start thinking about running two encoding jobs in parallel (if that's possible to do) and then figure out if it's actually a benefit to overall performance by using more cores or if it's actually harming performance by oversubscribing the system. It might also be a fun way to test stability at 3.95GHz since you weren't pegging all the cores before.
Thanks for mentioning that.(to all)
There (was/is?) a limit of only one instance of AC3 encoding allowed(Dolby).
But I have heard that AC3 is now an "open" standard.
So maybe I could now run two encodings at once.
Will have to try that and see if the AC3 encoding still works.
If I find that I can run two encodes at once then I'll be set.
Probably be turning on all the Threads then.
May to have to remove that silicone pad finally and put
in the top end heat paste...Grizzly Kryonaut rated=12 vs pad=6.
60s C is ok, 70s C is not.
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@techguy
1)high bitrates (think Blu-ray quality or higher)
-----So right there! Core use skyrockets.
Because of the heavy load, I avoid HD material
unless that is the sole source.
So thankful that I find dvd quality "good enough".
----------Here is some interesting info I got------------(uses FFmpeg I believe)
As an FYI, the mpeg2 decoder will use up to 8 threads but on SD, and even some HD material it's probably effectively less. However, the mpeg2 decoder will decode SD on your system at 250-400 FPS.
Looking at the X.264 encoder threading logic, it will use up to 3 threads for SD material in the first pass. It's basically height in pixels / 128. The comments in the code says that more threads reduces quality in pass 1.
Pass 2 threading uses max 32 threads for encoding on HD, and about 15 threads for SD. At one point we experimented with letting you set the thread counts, but it turned that x264 does an optimal job automatically.
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That explains my "Pass 2"(X264) being 5 times faster then "Pass 1".
(With VideoReDo) So wish I could use it.
But deinterlacing does not work with X264 and 2:3 pulldown video.
(H264 works but so slow)
Thanks again to all for the ideas!
jmc2