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7th January 2017, 16:02 | #1 | Link |
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StaxRip - 2 pass h.265, fixed bitrate?
I think my confusion comes from a lack of understanding.
I'm under the impression 2 pass does a once over on the to-be encoded file to figure out where the high action and low movement scenes are to apply a veritable bit rate? But if that's the case, how come when 2 pass is selected an option for a fixed bitrate shows up? In a nut shell i'm trying to figure out how to batch encode into h.265 but not disregard the original file size (or bitrate). For instance i have a 1h program that is h.264 (~2GB) high action and a h.264 (~1GB) low action. How do i best batch encode to a ~30% reduction? also does anyone have any insight on the advantages of 3 pass? on the encoding tests I've done its seems to have a VERY slight improvement over 2 pass @ the same file size. Thanks, apeg |
7th January 2017, 16:08 | #2 | Link |
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Usually you choose the average bitrate with 2pass. If you want 30% reduction choose 30% less bitrate than the original file used (see MediaInfo of original file). Plus maybe some percent more to account for audio and container overhead bitrate. I don't know if there's a way to automate this in StaxRip.
3 pass is overkill. If you have time to waste it's better to invest it an a slower preset. |
9th January 2017, 02:21 | #3 | Link |
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ahh it represents the average bitrate... that makes more sense.
thanks sneaker, ya i cant seem to figure out how to automate a percentage based target. I may have to live with fixed size and have the high & low actions videos meet somewhere in the middle. Cheers, |
10th January 2017, 19:18 | #4 | Link |
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something this special can only be done via scripting
at tools > advanced > event commands you can create a event command using the event 'After Source Loaded' and execute the command ExecuteCSharpScript using following code: Code:
using System; using static StaxRip.ShortcutModule; var bitrate = Int32.Parse(MediaInfo.GetVideo( p.LastOriginalSourceFile, "BitRate")) / 1000; g.MainForm.tbBitrate.Text = ((int)(bitrate * 0.7)).ToString();
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