No Video

[Ian Davidson]

So, this is a C question - how do I trap the Ctrl-C?

Thanks

Ian

On 07/01/2013 10:09, Krzysztof Konopko wrote:
> On 07/01/13 10:06, Ian Davidson wrote:
>> Thanks David,
>>
>> The program ran after removing the single quotes - but just like my
>> other program, the video does not show.
>> I don't know whether this is significant - I run the program and it is
>> supposed to start recording, then I press Ctrl-C to stop the recording.
>> Have I got a problem where the file has not been 'finalised'?  If so, it
>> would be because I do not know how to capture the Ctrl-C and tell the
>> pipeline to stop.
>>
>> Ian
>>
>> On 07/01/2013 09:51, David Röthlisberger wrote:
>>> On 7 Jan 2013, at 09:17, Ian Davidson wrote:
>>>> Hi Kris,
>>>>
>>>> You are correct when you say that you did not explain why my program
>>>> didn't work - but I tried your advice and now have 2 programs which
>>>> don't work.
>>>>
>>>> I use a gst_parse_launch, passing it a string such as
>>>> "v4l2src norm=PAL ! videorate !
>>>> 'video/x-raw,format=(string)I420,width=320,height=240,framerate=(fraction)25/1'
>>>> ! queue ! mux. alsasrc ! audioconvert !
>>>> 'audio/x-raw,rate=44100,channels=2' ! queue ! mux. avimux name=mux !
>>>> filesink location=file.avi"
>>>> but when I run the program I get a message
>>>> GStreamer-CRITICAL **: gst_element_make_from_uri: assertion
>>>> `gst_uri_is_valid (uri)' failed
>>> Have you tried removing the single-quotes? When you pass that to
>>> gst-launch on the command line, the shell will have stripped the
>>> quotes off, so what gst-launch saw isn't the same as what you are
>>> passing to gst_parse_launch.
>>>
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>
> OK, got it. You need to send EOS and wait for the EOS message rather
> than simple quit the main loop. AVI muxer needs to finalize the output.
>
> gst_element_send_event (pipeline, gst_event_new_eos ());
>
> Kris
>

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