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doc/ffmpeg: document more deeply -re option.

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Signed-off-by: Clément Bœsch <ubitux@gmail.com>
Signed-off-by: Lou Logan <lou@lrcd.com>
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burek
2012-07-11 21:22:43 +02:00
committed by Clément Bœsch
parent ff2fda57df
commit cb59e62abb
1 changed files with 7 additions and 0 deletions
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doc/ffmpeg.texi
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@ -820,6 +820,13 @@ Dump each input packet to stderr.
When dumping packets, also dump the payload. When dumping packets, also dump the payload.
@item -re (@emph{input}) @item -re (@emph{input})
Read input at native frame rate. Mainly used to simulate a grab device. Read input at native frame rate. Mainly used to simulate a grab device.
By default @command{ffmpeg} attempts to read the input(s) as fast as possible.
This option will slow down the reading of the input(s) to the native frame rate
of the input(s). It is useful for real-time output (e.g. live streaming). If
your input(s) is coming from some other live streaming source (through HTTP or
UDP for example) the server might already be in real-time, thus the option will
likely not be required. On the other hand, this is meaningful if your input(s)
is a file you are trying to push in real-time.
@item -loop_input @item -loop_input
Loop over the input stream. Currently it works only for image Loop over the input stream. Currently it works only for image
streams. This option is used for automatic FFserver testing. streams. This option is used for automatic FFserver testing.