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8bd79196
编写于
12月 04, 2018
作者:
G
Gyan Doshi
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doc: chromaprint
Add entry in external library list and add details to muxer entry.
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doc/general.texi
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@@ -53,6 +53,12 @@ Go to @url{http://aomedia.org/} and follow the instructions for
...
@@ -53,6 +53,12 @@ Go to @url{http://aomedia.org/} and follow the instructions for
installing the library. Then pass @code
{
--enable-libaom
}
to configure to
installing the library. Then pass @code
{
--enable-libaom
}
to configure to
enable it.
enable it.
@section Chromaprint
FFmpeg can make use of the Chromaprint library for generating audio fingerprints.
It is licensed under LGPL version 2.1. Pass @code
{
--enable-chromaprint
}
to configure to
enable it. See @url
{
https://acoustid.org/chromaprint
}
.
@section OpenJPEG
@section OpenJPEG
FFmpeg can use the OpenJPEG libraries for encoding/decoding J2K videos. Go to
FFmpeg can use the OpenJPEG libraries for encoding/decoding J2K videos. Go to
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doc/muxers.texi
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@@ -94,21 +94,23 @@ compatibility with software that only supports a single audio stream in AVI
...
@@ -94,21 +94,23 @@ compatibility with software that only supports a single audio stream in AVI
@anchor{chromaprint}
@anchor{chromaprint}
@section chromaprint
@section chromaprint
Chromaprint fingerprinter
Chromaprint fingerprinter
.
This muxer feeds audio data to the Chromaprint library, which generates
This muxer feeds audio data to the Chromaprint library,
a fingerprint for the provided audio data. It takes a single signed
which generates a fingerprint for the provided audio data. See @url{https://acoustid.org/chromaprint}
native-endian 16-bit raw audio stream.
It takes a single signed native-endian 16-bit raw audio stream of at most 2 channels.
@subsection Options
@subsection Options
@table @option
@table @option
@item silence_threshold
@item silence_threshold
Threshold for detecting silence, ranges from
0 to 32767. -1 for default
Threshold for detecting silence, ranges from
-1 to 32767. -1 disables silence detection and
(required for use with the AcoustID service)
.
is required for use with the AcoustID service. Default is -1
.
@item algorithm
@item algorithm
Algorithm index to fingerprint with.
Version of algorithm to fingerprint with. Range is 0 to 4. Version 2 requires that silence
detection be enabled. Default is 1.
@item fp_format
@item fp_format
Format to output the fingerprint as. Accepts the following options:
Format to output the fingerprint as. Accepts the following options:
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@@ -120,7 +122,7 @@ Binary raw fingerprint
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@@ -120,7 +122,7 @@ Binary raw fingerprint
Binary compressed fingerprint
Binary compressed fingerprint
@item base64
@item base64
Base64 compressed fingerprint
Base64 compressed fingerprint
@emph{(default)}
@end table
@end table
...
...
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