[FFmpeg-trac] #986(avutil:new): windows named pipe seek
FFmpeg
trac at avcodec.org
Thu Feb 9 14:20:06 CET 2012
#986: windows named pipe seek
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Reporter: setosha | Owner: michael
Type: defect | Status: new
Priority: normal | Component: avutil
Version: unspecified | Resolution:
Keywords: windows | Blocked By:
named pipe seek | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
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Comment (by setosha):
Replying to [comment:4 compn]:
> is it possible to create a named pipe just using the command prompt? or
do you have to use some kind of program? a lot of people have been asking
how to do named pipes on windows. it will help a lot of people if you
share the secret or easy way to do it ;)
I don't know way to crate it from cmd.exe but seems it possible from
PowerShell using c#. I'm create pipes from my program.
[http://qt.nokia.com Qt] implements {{{QLocalServer}}} trough named pipes.
Win API-way [http://msdn.microsoft.com/en-
us/library/windows/desktop/aa365780(v=vs.85).aspx here].
It's not unix pipes and not usual files. Here server side creates pipe and
listen for incoming connections. So every client, opens different
connection to pipe. So server can tranfer different data to every
connection trough same pipe.
Also pipe can be unnamed. It creates once. And you got two HANDLEs for
sides.
May be exist some way to create unnamed pipe and give handles to
processes...
> anyways, to your question, i think the problem is that most indexes are
at the end of the file. so ffmpeg tries to seek to the end to get the
index.
It's bugtracker here :) I think it's a bug.
> mplayer has -noidx option, i dont think ffmpeg has such ability yet?
It's not just index. pipe means that stream not support seek operations.
And can't be open twice.
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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/986#comment:6>
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