AW: AW: Writing Video and reading in same time

[Bernhard Graaf]

Hi Stefan,

 

Thanks' for your tip. It runs with fdsrc. But it seems to be not as stable
as filesrc. If I add the 'do-timestamp'-option, it's a little bit better.
Sometime when I try to use 'gst_element_seek' the pipe crashed.   filesrc is
much more stable then fdsrc. Do you have any further ideas?

 

Bernhard 

 

  _____  

Von: gstreamer-devel-bounces+bernhard.graaf=gmx.de at lists.freedesktop.org
[mailto:gstreamer-devel-bounces+bernhard.graaf=gmx.de at lists.freedesktop.org]
Im Auftrag von Stefan Kost
Gesendet: Samstag, 25. Juni 2011 20:32
An: gstreamer-devel at lists.freedesktop.org
Betreff: Re: AW: Writing Video and reading in same time

 

On 06/25/11 18:35, Bernhard Graaf wrote: 

Hi Stefan,

 

Yes, no problem.

I'm using my own C-Program for that, but my pipe is looks like:

 

Server:

Dvbsrc ! mpegtsmux name=demux demux.video_xxxx ! queue ! mpegpsmux name=mux
! filesink location=xyz.mpg demux.audo_xxxx ! queue ! mux. (converting
Mpeg-TS to Mpeg-PS --> is running well)

 

Client:

1.	playbin2 video-sink=xvimagesink uri=xyz.mpg
2.	filesrc location=xyz.mpg ! mpegpsdemux name=demux ! queue ! mpeg2dec
! xvimagsink demux. ! queue ! mad ! alsasink

 

Both of them are running well with a closed file (have a given file length).

But also both of the have the same problem: running to the point of file,
where the file length was as opening time.

The problem is that at somepoint filesrc is checking the filesize and it is
not aware that it changes.

You could try using a pipe instead of files (fssink+fdsrc instead of
filesink,filesrc). Otherwise we might need a flag on filesrc to restat the
file for each read and if size changed send a duration change.

Stefan




 

Thanks

 

  _____  

Von: gstreamer-devel-bounces+bernhard.graaf=gmx.de at lists.freedesktop.org
[mailto:gstreamer-devel-bounces+bernhard.graaf=gmx.de at lists.freedesktop.org]
Im Auftrag von Stefan Kost
Gesendet: Samstag, 25. Juni 2011 18:09
An: gstreamer-devel at lists.freedesktop.org
Betreff: Re: Writing Video and reading in same time

 

On 06/25/11 17:56, Bernhard Graaf wrote: 

Hi,

 

I have a problem with gstreamer.

I write a video stream in a file and try to read it with another process (a
few seconds later).

If I link the reading pipe using filesrc or playbin2 and could only see the
video as long as the file is in opening time.

For example:

If the file is only 4 seconds long in the time I link the reading pipe, I
could only see this 4 seconds, but the writing pipe is running and the file
is much longer in the meantime (sorry for my bad English).

I hope you can understand my problem.

Here my question:

Is there any solution to write a video file with one process and read it
with another pipe?


What format are you using. Could you explain the scenario better. Do you
wnat to relay a we-stream? Maybe you can stream the video without writing it
to a file buffer.

Stefan




 

Thanks' for your help!!!!

 

Bernhard

 
 
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