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doc/encoders.texi: Document updated behavior

Bitrates of akiyo changed slightly.

Tomas Härdin committed 4 years ago

Commit 30e2bb01 parent 1cd85961 file · +6 −5Browse files

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doc/encoders.texi+6−5
@@ -1279,23 +1279,23 @@ Compatible with Windows 3.1 and vintage MacOS. · 1278 unmodified lines
12791279 @subsection Options
12801280
12811281 @table @option
1282−@item keyint_min @var{integer}
1282+@item g @var{integer}
12831283 Keyframe interval.
1284−A keyframe is inserted every @code{-keyint_min}-th frame.
1284+A keyframe is inserted at least every @code{-g} frames, sometimes sooner.
12851285
12861286 @item q:v @var{integer}
12871287 Quality factor. Lower is better. Higher gives lower bitrate.
1288−The following table lists bitrates when encoding akiyo_cif.y4m for various values of @code{-q:v} with @code{-keyint_min 100}:
1288+The following table lists bitrates when encoding akiyo_cif.y4m for various values of @code{-q:v} with @code{-g 100}:
12891289
12901290 @table @option
12911291 @item @code{-q:v 1} 1918 kb/s
12921292 @item @code{-q:v 2} 1735 kb/s
12931293 @item @code{-q:v 4} 1500 kb/s
1294−@item @code{-q:v 10} 1064 kb/s
1294+@item @code{-q:v 10} 1041 kb/s
12951295 @item @code{-q:v 20} 826 kb/s
12961296 @item @code{-q:v 40} 553 kb/s
12971297 @item @code{-q:v 100} 394 kb/s
1298−@item @code{-q:v 200} 311 kb/s
1298+@item @code{-q:v 200} 312 kb/s
12991299 @item @code{-q:v 400} 266 kb/s
13001300 @item @code{-q:v 1000} 237 kb/s
13011301 @end table
@@ -1311,6 +1311,7 @@ Avoid wasting bytes, ignore vintage MacOS decoder. · 9 unmodified lines
13111311 The minimum and maximum number of strips to use.
13121312 Wider range sometimes improves quality.
13131313 More strips is generally better quality but costs more bits.
1314+Fewer strips tend to yield more keyframes.
13141315 Vintage compatible is 1..3.
13151316
13161317 @item strip_number_adaptivity @var{integer}

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