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Diffstat (limited to 'doc/avconv.texi')
| -rw-r--r-- | doc/avconv.texi | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/doc/avconv.texi b/doc/avconv.texi index e14ab857f4..1075cc7c56 100644 --- a/doc/avconv.texi +++ b/doc/avconv.texi @@ -207,6 +207,24 @@ avconv -i INPUT -attach DejaVuSans.ttf -metadata:s:2 mimetype=application/x-true @end example (assuming that the attachment stream will be third in the output file). +@item -dump_attachment[:@var{stream_specifier}] @var{filename} (@emph{input,per-stream}) +Extract the matching attachment stream into a file named @var{filename}. If +@var{filename} is empty, then the value of the @code{filename} metadata tag +will be used. + +E.g. to extract the first attachment to a file named 'out.ttf': +@example +avconv -dump_attachment:t:0 out.ttf INPUT +@end example +To extract all attachments to files determined by the @code{filename} tag: +@example +avconv -dump_attachment:t "" INPUT +@end example + +Technical note -- attachments are implemented as codec extradata, so this +option can actually be used to extract extradata from any stream, not just +attachments. + @end table @section Video Options |