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[79.124.17.100]) by mx.google.com with ESMTP id a640c23a62f3a-a5a3e26bdecsi1049510066b.508.2024.05.19.12.53.28; Sun, 19 May 2024 12:53:28 -0700 (PDT) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 49D5B68D056; Sun, 19 May 2024 22:53:24 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from iq.passwd.hu (iq.passwd.hu [217.27.212.140]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 4A26268D066 for ; Sun, 19 May 2024 22:53:17 +0300 (EEST) Received: from localhost (localhost [127.0.0.1]) by iq.passwd.hu (Postfix) with ESMTP id 804E7EA6B0; Sun, 19 May 2024 21:53:16 +0200 (CEST) X-Virus-Scanned: amavisd-new at passwd.hu Received: from iq.passwd.hu ([127.0.0.1]) by localhost (iq.passwd.hu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Joksddt-VWER; Sun, 19 May 2024 21:53:15 +0200 (CEST) Received: from bluegene.passwd.hu (localhost [127.0.0.1]) by iq.passwd.hu (Postfix) with ESMTP id 12212EA66A; Sun, 19 May 2024 21:53:15 +0200 (CEST) From: Marton Balint To: ffmpeg-devel@ffmpeg.org Date: Sun, 19 May 2024 21:52:58 +0200 Message-Id: <20240519195258.13627-2-cus@passwd.hu> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20240519195258.13627-1-cus@passwd.hu> References: <20240518212048.GF2821752@pb2> <20240519195258.13627-1-cus@passwd.hu> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH v2 2/5] doc/ffmpeg: document -channel_layout/ch_layout options X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Marton Balint Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: pV6tiyfI1Mw3 Signed-off-by: Marton Balint --- doc/ffmpeg.texi | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi index da37e3ad37..f25f6192eb 100644 --- a/doc/ffmpeg.texi +++ b/doc/ffmpeg.texi @@ -1719,12 +1719,21 @@ This is an alias for @code{-filter:a}, see the @ref{filter_option,,-filter optio @table @option @item -atag @var{fourcc/tag} (@emph{output}) Force audio tag/fourcc. This is an alias for @code{-tag:a}. +@item -ch_layout[:@var{stream_specifier}] @var{layout} (@emph{input/output,per-stream}) +Alias for @code{-channel_layout}. +@item -channel_layout[:@var{stream_specifier}] @var{layout} (@emph{input/output,per-stream}) +Set the audio channel layout. For output streams it is set by default to the +input channel layout. For input streams it overrides the channel layout of the +input. Not all decoders respect the overridden channel layout. This option +also sets the channel layout for audio grabbing devices and raw demuxers +and is mapped to the corresponding demuxer option. @item -guess_layout_max @var{channels} (@emph{input,per-stream}) If some input channel layout is not known, try to guess only if it corresponds to at most the specified number of channels. For example, 2 tells to @command{ffmpeg} to recognize 1 channel as mono and 2 channels as stereo but not 6 channels as 5.1. The default is to always try to guess. Use -0 to disable all guessing. +0 to disable all guessing. Using the @code{-channel_layout} option to +explicitly specify an input layout also disables guessing. @end table @section Subtitle options