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Stefan Westerfeld
ffmpeg
Commits
21858b06
Commit
21858b06
authored
Feb 10, 2019
by
Reto Kromer
Committed by
Carl Eugen Hoyos
Feb 10, 2019
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doc/snow: fix typos
parent
885a80d1
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snow.txt
doc/snow.txt
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doc/snow.txt
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21858b06
...
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@@ -172,7 +172,7 @@ spatial_decomposition_count
FIXME
colorspace_type
0 unspecified Y
c
bCr
0 unspecified Y
C
bCr
1 Gray
2 Gray + Alpha
3 GBR
...
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@@ -235,7 +235,7 @@ spatial_decomposition_type
stored as delta from last, last is reset to 0 if always_reset || keyframe
qlog
quality (logarthmic quantizer scale)
quality (logar
i
thmic quantizer scale)
stored as delta from last, last is reset to 0 if always_reset || keyframe
mv_scale
...
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@@ -251,11 +251,11 @@ block_max_depth
stored as delta from last, last is reset to 0 if always_reset || keyframe
quant_table
quantiz
t
ation table
quantization table
Highlevel bitstream structure:
=============================
=============================
=
--------------------------------------------
| Header |
--------------------------------------------
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@@ -303,7 +303,7 @@ Decoding process:
| Intra DC | |
| | LL0 subband prediction
------------ |
\ Dequantizaton
\ Dequantizat
i
on
------------------- \ |
| Reference frames | \ IDWT
| ------- ------- | Motion \ |
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@@ -390,8 +390,8 @@ motion vector prediction
(mvx_diff, mvy_diff)*mv_scale
Intra DC Predicton:
====================
==
Intra DC Predict
i
on:
====================
the luma and chroma values of the left block are used as predictors
the used luma and chroma is the sum of the predictor and y_diff, cb_diff, cr_diff
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@@ -407,7 +407,7 @@ Motion Compensation:
Halfpel interpolation:
----------------------
h
alfpel interpolation is done by convolution with the halfpel filter stored
H
alfpel interpolation is done by convolution with the halfpel filter stored
in the header:
horizontal halfpel samples are found by
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@@ -463,8 +463,8 @@ to the closest available fullpel sample
Smaller pel interpolation:
--------------------------
if diag_mc is set then points which lie on a line between 2 vertically,
horiz
i
ontally or diagonally adjacent halfpel points shall be interpolated
linearl
s
with rounding to nearest and halfway values rounded up.
horizontally or diagonally adjacent halfpel points shall be interpolated
linearl
y
with rounding to nearest and halfway values rounded up.
points which lie on 2 diagonals at the same time should only use the one
diagonal not containing the fullpel point
...
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@@ -519,8 +519,8 @@ width,height here are the width and height of the LL0 subband not of the final
video
Dequantizaton:
==============
Dequantizat
i
on:
==============
=
FIXME
Wavelet Transform:
...
...
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