TEEing the video

[Ian Davidson]

I have had another opportunity to test my program, both in its original 
form and with my attempted improvements.

I notice that the 'working version' does set a timestamp in the Auto 
Ring Buffer to 99:99:99.999999999 several times, but it does eventually 
stop and then the pipeline reports that it has transitioned to the 
PLAYING state.  However, if I add my extra elements to the pipeline, 
whether I link them or not, the pipeline never transitions to the 
PLAYING state and is constantly filling the buffer with timestamps.

I accept that I may have done something foolish - but if I could see it 
I would not be writing here.

Any pointers would be appreciated.

Ian
On 04/11/2014 16:00, Ian Davidson wrote:
>
> I have a program (written in C and using GStreamer 1.0) which works. I 
> take input from v4l2src and alsasrc and mux them together and save an 
> mp4 file. I also tee off the audio early on and save it as a wav file.
>
> However, I have no confirmation that I actually have a video signal to 
> record. So, I decided to enhance the program by teeing the video off, 
> right after the v4l2src and send it to an autovideosink to act as a 
> monitor. The result was not 100% successful. The monitor window 
> appears with a picture in it – but then everything seems to freeze up. 
> Looking at a trace (--gst-debug-level=4) appears to loop for ever 
> setting a timestamp to 99:99:99.999999999.
>
>
> I have copied part of my program below. The elements I have added are 
> defined in the line GstElement *videotee, *queue5, *monscale, 
> *moncapsfilter, *videosink;
>
>
> I have also included the beginning of the Trace output. To my 
> untrained eye, everything seems to link together OK, but then it gets 
> stuck with the timestamps. Any pointers as to where I am going wrong 
> would be appreciated.
>

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