Parsing Real Media .ram files
kassube at gmx.net
Sat Sep 22 09:12:33 UTC 2007
Peter Garrett wrote:
> The problem I am having with my attempts is that I always get
> apparently "invisible" characters at the end of the URL, which stop
> mplayer from accessing the URL correctly. For example:
> $ cat classicfm.ram
> mplayer $(head -n 1 ~/classicfm.ram)
> [snipped output from mplayer]
> STREAM_LIVE555, URL: rtsp://220.127.116.11/broadcast/classicfm.rm
> Stream not seekable!
> file format detected.
> Failed to get a SDP description from URL
> "rtsp://18.104.22.168/broadcast/classicfm.rm%0D": cannot handle DESCRIBE
> response: RTSP/1.0 404 Not Found
> The puzzle to me is - where is the "%0D" at the end coming from, and
> how do I get rid of it?
> I have tried, for example, adding "cut -d '%' -f 1 " :
> mplayer $(head -n 1 ~/classicfm.ram | cut -d '%' -f 1)
> but this doesn't make any difference...
The "%0D" is the mplayer's display of the invisible ASCII
character "Carriage Return" or "\r" for C programmers. For several
internet protocols it is quite usual to use "\r\n" as line delimiter,
while for Unix only "\n" (= ASCII character for "Line Feed") is used.
There is no "%" character in your string. Therefore you can't use it as
delimiter for cut. Try this instead:
mplayer $(head -1 ~/classicfm.ram|cut -f1 -d$(echo -ne '\r'))
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