Mailinglist Archive: opensuse (2803 mails)

[Rodney Baker <rodney.baker@xxxxxxxxxxxx>]

On Sun, 13 Jul 2008 04:11:50 David Bolt wrote:
> [...snip...]
> A simple way would be to write a script to do it and just pass the URL
> and output name to it. That way you can hide the various steps away and
> only need to worry about the one command.
>
> You might want to add in a bit more error-checking, but something like
> this should do:
>
> #!/bin/bash
>
> URL="$1"
> OUTPUT="$2"
>
> # make sure there's an input and an output specified
> #
> [ -z "${URL}" -o -z "${OUTPUT}" ] && exit
>
> # check for pre-existing output file and abort if present
> #
> [ -s "${OUTPUT}" ] && exit 1
>
> # get a temporary filename
> #
> TEMPFILE=$(mktemp)
>
> # and then use it to create named pipe
> #
> rm "${TEMPFILE}"
> mkfifo "${TEMPFILE}"
>
> # have ffmpeg read from the named pipe, write the mp3 as 160kbits, and
> # background it. Redirect stdin so it doesn't try reading from the
> # keyboard.
> #
> ffmpeg -f rm -i "${TEMPFILE}" -f mp3 -ab 160k "${OUTPUT}" </dev/null &
>
> # have mplayer read the stream from the supplied URL and dump
> # it to the named pipe
> #
> mplayer -dumpstream -dumpfile "${TEMPFILE}" -playlist "${URL}"
>
> # remove the pipe
> #
> rm "${TEMPFILE}"
>
> # and quit
> #
> exit 0

Thanks, David. ffmpeg doesn't actually need the -f parameter to set the output 
format - it will auto-detect from the output file extension (which means that 
the script can automatically handle video as well as audio-only streams). 

That being said, I might play with adding a couple of optional command line 
parameters to specify output format details if needed. That could make it 
easy to download  and convert to pal dvd format in one step :-).

Regards,

-- 
===================================================
Rodney Baker VK5ZTV
rodney.baker@xxxxxxxxxxxx
=================================================== 

The rhino is a homely beast,
For human eyes he's not a feast.
Farewell, farewell, you old rhinoceros,
I'll stare at something less prepoceros.
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