[FFmpeg-devel] [PATCH] doc/encoders: add flac

Michael Niedermayer michaelni at gmx.at
Wed May 20 02:31:03 CEST 2015

If someone wants to cleanup spelling and grammer and push this, do not
I just wanted to document the 2 newly added options and then realized
that flac enc is missig from the docs ...

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
 doc/encoders.texi |   76 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)

diff --git a/doc/encoders.texi b/doc/encoders.texi
index a6cdd99..d147f10 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -494,6 +494,82 @@ Selected by Encoder (default)
 @end table
+ at anchor{flac}
+ at section flac
+FLAC (Free Lossless Audio Codec) Encoder
+ at subsection Options
+The following options are supported by FFmpegs flac encoder.
+ at table @option
+ at item compression_level
+Sets the compression level, which chooses defaults for many other options
+if they are not set explicitly.
+ at item frame_size
+Sets the size of the frames in samples per channel.
+ at item lpc_coeff_precision
+Sets the LPC coefficient precission, valid values are from 1 to 15, 15 is the
+ at item lpc_type
+Sets the first stage LPC algorithm
+ at table @samp
+ at item none
+LPC is not used
+ at item fixed
+fixed LPC coefficients
+ at item levinson
+ at item cholesky
+ at end table
+ at item lpc_passes
+Number of passes to use for Cholesky factorization during LPC analysis
+ at item min_partition_order, max_partition_order
+The minimum and maximum partition orders
+ at item prediction_order_method
+ at table @samp
+ at item estimation
+ at item 2level
+ at item 4level
+ at item 8level
+ at item search
+Bruteforce search
+ at item log
+ at end table
+ at item ch_mode
+Channel mode
+ at table @samp
+ at item auto
+The mode is choosen automatically for each frame
+ at item indep
+Channls are independantly coded
+ at item left_side
+ at item right_side
+ at item mid_side
+ at end table
+ at item exact_rice_parameters
+Chooses if rice parameters are calculated exactly or approximatly.
+if set to 1 then they are choosen exactly, which slows the code down slightly and
+improves compression slighty
+ at item multi_dim_quant
+Multi Dimensional Quantization. If set to 1 then a 2nd stage LPC algorithm is
+applied after the first stage to finetune the coefficients. This is quite slow
+and slightly improves compression.
+ at end table
 @section libfaac

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