[FFmpeg-devel] [PATCH] WAV demuxer: Document the ignore_length option.
Calvin Walton
calvin.walton at kepstin.ca
Wed Sep 16 23:13:54 CEST 2015
---
doc/demuxers.texi | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/doc/demuxers.texi b/doc/demuxers.texi
index 34bfc9b..fe9b7b1 100644
--- a/doc/demuxers.texi
+++ b/doc/demuxers.texi
@@ -522,4 +522,27 @@ Example: convert the captions to a format most players understand:
ffmpeg -i http://www.ted.com/talks/subtitles/id/1/lang/en talk1-en.srt
@end example
+ at section wav
+
+WAV demuxer.
+
+This demuxer accepts the following option:
+ at table @option
+
+ at item ignore_length
+Ignore the length field in the WAV file header.
+
+Some tools, when generating extremely long or streaming WAV files, may set the
+length field to an incorrect or invalid value.
+
+If you set the @option{ignore_length} option to 1, FFmpeg will ignore the
+length field in the WAV header, and treat all of the data in the file after
+the header as a continuous stream of audio data. If the file contains non-audio
+data after the audio (e.g. ID3 tags), it will be treated as audio data and
+cause audible artifacts or decoding errors.
+
+The default, 0, respects the length field.
+
+ at end table
+
@c man end DEMUXERS
--
2.5.1
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