[x265] [PATCH 1/6] doc(tme): update docs and mark --threaded-me as experimental feature
Shashank Pathipati
shashank.pathipati at multicorewareinc.com
Fri Apr 10 09:10:39 UTC 2026
>From 64847b9d2e6b5bcd407ad43fd21824bfa9e264e1 Mon Sep 17 00:00:00 2001
From: Shashank Pathipati <shashank.pathipati at multicorewareinc.com>
Date: Fri, 10 Apr 2026 14:11:57 +0530
Subject: [PATCH 1/6] doc(tme): update docs and mark --threaded-me as
experimental feature
---
doc/reST/cli.rst | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/doc/reST/cli.rst b/doc/reST/cli.rst
index f602e1307..43c488b14 100755
--- a/doc/reST/cli.rst
+++ b/doc/reST/cli.rst
@@ -408,16 +408,21 @@ Performance Options
can reduce compression efficiency. Recommended on many-core CPUs when
encode speed is prioritized over compression efficiency.
- If VBV options are enabled, Threaded ME is automatically disabled and a
- warning is emitted.
+ This feature is automatically disabled in the following conditions:
- This feature is implicitly disabled when no thread pool is present.
+ - When no thread pool is present.
+ - When the detected CPU core count is less than 32.
+ - If VBV options are enabled, due to incompatibility with re-encoding trigggers.
- --threaded-me provides speedups on many-core CPUs, accompanied by a
- compression efficiency loss.
+ Default disabled. **Experimental Feature**
+
+ .. note::
+ :option:`--threaded-me` currently provides encoding speedups only on
+ many-core machines running at low clock frequencies (at or below
+ approximately 1.5 GHz). On high-frequency systems or machines with
+ fewer cores, the overhead of the additional motion estimation work
+ may outweigh the parallelism gains.
- Default disabled.
-
.. option:: --preset, -p <integer|string>
Sets parameters to preselected values, trading off compression efficiency against
--
2.52.0.windows.1
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