Changes between Version 44 and Version 45 of Encodings

Timestamp:

05/17/14 06:02:28 (8 years ago)

Author:

Antoine Martin

Comment:

--

Encodings

@@ -62 +62 @@
 
 
+=== Notes ===
+When comparing performance, make sure that you use the right metrics... The number of updates per second is not always a good one (if there are more small regions, this can be a good or a bad thing), more examples here: [/wiki/Testing#MisleadingStatistics Misleading Statistics]
+}}}
+
 
 {{{#!div class="box"
 == Statistics ==
 
-As part of encoding improvements (mostly in #419), we have collected encoding performance statistics for 4 still test pictures using the current crop of codec code (pre-release version 0.13):
+As part of encoding improvements (mostly in #419), we have collected encoding performance statistics for 4 still test pictures using the current crop of codec code (pre-release version 0.13).
+These encodings are also used when a video encoding is selected as primary encoding, this is done to optimize bandwidth and CPU usage: video encodings require a full frame everytime, so we use still picture encodings for smaller regions and for automatic lossless refresh.
+
 |||||||||| Mode ||||=Desktop 2560x1600=||||=Browser 1920x1080=||||=Diagram 640x800||||=Small Alpha 64x48||
 ||Encoding||Compressor||Preset||Quality||Speed||MPixels/s||comp||MPixels/s||comp||MPixels/s||comp||MPixels/s||comp||
@@ -94 +100 @@
 Notes:
 * all tests were performed on an AMD FX-8150 (octa-core 3GHz AMD CPU)
+* video encodings are not included, and should generally be preferred to the single picture encodings shown here
 * this shows both speed in mega pixels per second (higher is better), and compression ratio (lower is better)
 * Low quality at low speed doesn't really make much sense, so some values have been omitted
@@ -103 +110 @@
 
 
-
-=== Notes ===
-When comparing performance, make sure that you use the right metrics... The number of updates per second is not always a good one (if there are more small regions, this can be a good or a bad thing), more examples here: [/wiki/Testing#MisleadingStatistics Misleading Statistics]
-}}}
-
 {{{#!div class="box"
 == Future Encoding Support ==