AviSynth+ - Revision history

Reel.Deal: add link to readthedocs avisynth+ documentation

2022-02-08T09:19:55Z

add link to readthedocs avisynth+ documentation

2021-02-10T17:15:27Z

Avisynth+ MT section to reach SetFilterMTMode

2020-06-11T13:01:54Z

‎Help filling MT modes: SetCacheHints

2020-06-11T12:59:38Z

‎Choosing the correct MT mode: notes on special mt

2020-06-02T15:55:36Z

add link to 'important links'

2019-10-27T13:05:57Z

update avisynth+ link

2018-01-26T23:04:04Z

reorder sections

2017-12-03T23:18:16Z

‎Enabling MT

2017-12-03T23:12:43Z

‎Enabling MT

2017-12-03T23:11:41Z

‎Enabling MT

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 * [https://www.avs-plus.net/ Homepage (avs-plus.net)&nbsp;]
 * [https://github.com/AviSynth/AviSynthPlus/releases '''Latest release''' (GitHub)&nbsp;]
 * [https://forum.doom9.org/showthread.php?t=181351 Discussion (Doom9 Forum)]
 * [[Avisynthplus/Downloads|More AVS+ download links]]

@@ Line 46: / Line 46: @@
 * [[Internal_functions]], listing the new functions.
 * [[Convert]], listing the new AVS+ functions and color spaces.
 * and many more
 Still to do:
 * ''AddAutoloadDir'' and related functions.
 * ''StrToUtf8'' and related functions.
 * ''ColorSpaceNameToPixelType''.
@@ Line 66: / Line 66: @@
 ===Multithreading===
-See the [[#MT Notes|MT Notes]] section below. ([[TODO]] - tutorial)
+See the [[#Multithreading (MT) Notes|Multithreading (MT) Notes]] section below. ([[TODO]] - tutorial)
 {{HiddenAnchor|AviSynth.2B.27s_Plugin_Autoloader}}
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-==MT Notes==
+==Multithreading (MT) Notes==
 <div style="max-width:62em" >
 *Source: [http://forum.doom9.org/showthread.php?p=1666371#post1666371 Doom9 Forum]
 So, how to use MT in AviSynth+? Most of it has been posted earlier actually, but let me summarize it.

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 The following script contains MT modes for various plugins, save it as <tt>mtmodes.avsi</tt> and place in your auto-load folder. The script is a work-in-progess, there's still lots of plugins that need to be tested and validated. When the script is finalized, the only thing the user will have to write in his script is the <code>Prefetch</code> call, all <code>SetFilterMtMode</code> calls will be hidden in a single <tt>.avsi</tt> script.
 *You can find the latest revision here: [http://publishwith.me/ep/pad/view/ro.rDkwcdWn4k9/latest AviSynth+ MT modes], if you like to contribute please do so [http://publishwith.me/ooiV92hupl here]. Report any issues [http://forum.doom9.org/showthread.php?t=168856 here].
 ===Choosing the correct MT mode===

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 *<code>MT_SERIALIZED</code>: If the filter requires sequential access or uses some global storage, then mode 3 is the only way to go. Source filter (filters without clip parameter) are autodetected, they do not need an explicit MT mode setting, they will automatically use MT_SERIALIZED.
-*<code>MT_SPECIAL_MT</code>: Experimental. Now use only for MP_Pipeline, the filter is like a source filter (no input clip parameter), internally multithreaded, and suffer heavy performance degradation from any of the three regular mt modes. Really, this is a workaround. Available from AviSynth+ version r2440.
+*<code>MT_SPECIAL_MT</code>: Experimental. Now use only for MP_Pipeline, the filter is like a source filter (no input clip parameter), internally multithreaded, and suffer heavy performance degradation from any of the three regular mt modes. Really, this is a workaround. Available from AviSynth+ version r2440. Avisynth+ 3.6 has serious mt fixes, maybe this mode is not needed anymore.
 ===Closing notes (don't skip!)===

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 {{HiddenAnchor|AviSynth.2B_x64_plugins}}
 <div style="margin=auto;text-align:center">'''Important Links:'''</div>
-* [http://www.avs-plus.net/ Original project page (avs-plus.net)&nbsp;]
+* [https://www.avs-plus.net/ Homepage (avs-plus.net)&nbsp;]
-* [https://github.com/AviSynth/AviSynthPlus/releases '''Latest release''' (github)&nbsp;]
+* [https://github.com/AviSynth/AviSynthPlus/releases '''Latest release''' (GitHub)&nbsp;]
 * [[Avisynthplus/Downloads|More AVS+ download links]]
 * [[AviSynth%2B_x64_plugins|'''AVS+ 64-bit plugins''']]

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 </div>
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 *http://forum.doom9.org/showthread.php?p=1682034#post1682034
 *http://forum.doom9.org/showpost.php?p=1668101&postcount=92
 </div>

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 ===Enabling MT===
-The other difference is how you actually enable multithreading. Calling SetFilterMTMode() is not enough, it sets the MT mode, but the MT mode only has an effect if MT is enabled at all. Note this means you can safely include/import/autoload your SetFilterMTMode() calls in even single-threaded scripts, and they will not be messed up. Uhm, onto the point: You enable MT by placing a single call to Prefetch(X) at the '''end''' of your script (but '''before''' a return statement), where X is the number of threads to use.
+The other difference is how you actually enable multithreading. Calling SetFilterMTMode() is not enough, it sets the MT mode, but the MT mode only has an effect if MT is enabled at all. Note this means you can safely include/import/autoload your SetFilterMTMode() calls in even single-threaded scripts, and they will not be messed up. Uhm, onto the point: You enable MT by placing a single call to Prefetch(X) at the '''end''' of your script, where X is the number of threads to use. If there is a return statement in your script it must be placed '''after''' Prefetch().
 ===Example ===