From 071a8f50b96758ced05e1eef3aba5ce915a56479 Mon Sep 17 00:00:00 2001 From: wm4 Date: Sun, 31 Mar 2013 04:24:53 +0200 Subject: options: add option to prevent decoder audio downmixing Also rename --a52drc to --ad-lavc-ac3drc, and add --ad-lavc-o. --- DOCS/man/en/changes.rst | 1 + DOCS/man/en/options.rst | 27 +++++++++++++++++++-------- 2 files changed, 20 insertions(+), 8 deletions(-) (limited to 'DOCS') diff --git a/DOCS/man/en/changes.rst b/DOCS/man/en/changes.rst index 1e5bb74a2c..20f6be553a 100644 --- a/DOCS/man/en/changes.rst +++ b/DOCS/man/en/changes.rst @@ -124,6 +124,7 @@ Command line switches -afm hwac3 --ad=spdif:ac3,spdif:dts -x W, -y H --geometry=WxH + --no-keepaspect -xy W --autofit=W + -a52drc level --ad-lavc-ac3drc=level =================================== =================================== *NOTE*: ``-opt val`` becomes ``--opt=val``. diff --git a/DOCS/man/en/options.rst b/DOCS/man/en/options.rst index 5c71dd977a..03f09b2efc 100644 --- a/DOCS/man/en/options.rst +++ b/DOCS/man/en/options.rst @@ -1,11 +1,3 @@ ---a52drc= - Select the Dynamic Range Compression level for AC-3 audio streams. - is a float value ranging from 0 to 1, where 0 means no compression and 1 - (which is the default) means full compression (make loud passages more - silent and vice versa). Values up to 2 are also accepted, but are purely - experimental. This option only shows an effect if the AC-3 stream contains - the required range compression information. - --abs= (``--ao=oss`` only) (OBSOLETE) Override audio driver/card buffer size detection. @@ -37,6 +29,25 @@ ``--ad=help`` List all available decoders. +--ad-lavc-ac3drc= + Select the Dynamic Range Compression level for AC-3 audio streams. + is a float value ranging from 0 to 1, where 0 means no compression and 1 + (which is the default) means full compression (make loud passages more + silent and vice versa). Values up to 2 are also accepted, but are purely + experimental. This option only shows an effect if the AC-3 stream contains + the required range compression information. + +--ad-lavc-downmix= + Whether to request audio channel downmixing from the decoder (default: yes). + Some decoders, like AC-3, AAC and DTS, can remix audio on decoding. The + requested number of output channels is set with the ``--channels`` option. + Useful for playing surround audio on a stereo system. + +--ad-lavc-o==[,=[,...]] + Pass AVOptions to libavcodec decoder. Note, a patch to make the o= + unneeded and pass all unknown options through the AVOption system is + welcome. A full list of AVOptions can be found in the FFmpeg manual. + --af= Specify a list of audio filters to apply to the audio stream. See `audio_filters` for details and descriptions of the available filters. -- cgit v1.2.3