Re: [xine-user] Re: need some help with fifo://

[Siggi L. <si...@us...>]

Hi,

On Tue, 29 Jan 2002, Cameron Simpson wrote:

[...]
> Firstly, xine is seeing EOF from your FIFO because you haven't kept it open.
> Secondly, I don't think you can just append two MPGs together:
> 
> 	cat 1.mpg 2.mpg | mpeg_decoder	# I don't think this works


There is no problem at all with this, MPEG is a fully streamable format,
so you can cut any parts out of such a stream and play them.
The worst thing that could happen is that you get some garbage frames or a
littlebit of noise between the files, but this can only happen if the
first stream is cut in the middle of a data packet, which should not
happen for complete files...

> Regarding the first problem, firt try this:
> 
> 	cat some.mpg other.mpg >/tmp/playlist
> 
> for your _first_ xine run and see if it plays the second one.

That should work fine.
It should even work better, if you use the filename /tmp/playlist.mpg, so
xine has a hint to the file format and doesn't have to do detection by
content.

> If it doesn't then you have to make xine reopen the fifo (just pressing
> <enter> in the main window should do this, yes?) and then just issue
> your cp again.
> 
> If it _does_ play the second MPG (as though it were part of the one stream),
> then you can do this:
> 
> 	mkfifo /tmp/playlist
> 	xine -pfh fifo://tmp/playlist &
> 	exec 3>/tmp/playlist
> 	cat some.mpg >&3
> 	[... and then later ...]
> 	cat other.mpg >&3
> 
> because the shell has the FIFO open xine doesn't see EOF, because the
> FIFO doesn't get closed.

Right, that's the solution. Don't close the pipe ;-)

But what do you need this feature for?

Cheers,
	Siggi