record two stream simultaneously

[Thiago Santos]

On 01/22/2015 08:01 PM, Briner Cédric wrote:
> hello,
>
>> If you search the logs for "gst_qt_mux_handle_buffer:<mux> selected pad"
>> you should see the buffers that are selected for muxing and you can
>> notice how one of the videos is stalled while the other is running.
> thanks for the explanation.
>
>> What source elements are you using? I'd recommend investigating how they
>> timestamp buffers.
> I'm using a datapath-e1s[1] and a webcam. I've also tested it with two
> webcams and the problem was the same. As mentionned before, the test
> script is on pastebin[2]. Maybe you could try to test it at home with 2
> webcams.
>
> Furthermore, I'd like to point you that I'm doing it on a ubuntu 14.04 
> which uses [3] gstreamer-1.2.3-1.
>
> > Would you me to tell you more information on the device itself.
>
> lspci -v ; # for the datapath-e1s
> ...
> 02:00.0 Multimedia video controller: Datapath Limited VisionRGB-E1
>     Subsystem: Datapath Limited Device 1139
>     Flags: fast Back2Back, 66MHz, medium devsel, IRQ 16
>     Memory at f7980000 (32-bit, non-prefetchable) [size=512K]
>     Capabilities: <access denied>
>     Kernel driver in use: rgb133
> ...
>
> lsusb   -d 0c45:6341 ;# for the webcam
> Bus 002 Device 003: ID 0c45:6341 Microdia
>
> and also the verbose output of the webcam in the attached file.
>
>
> Tell me if this information are the one you were looking for. And if 
> not, please tell me the command that you like me to execute.

Unfortunately I don't have 2 webcams to test your issue.
Run your pipeline with GST_DEBUG=6 and upload the output somewhere 
public so we can take a look.

>
> Many thanks for your help.
>
> cED
>
> [1]
> http://www.datapath.co.uk/products/video-capture-cards/vision-range/visionrgb-e1s 
>
> [2] http://pastebin.com/KL641ULY
> [3] http://packages.ubuntu.com/trusty/gstreamer1.0-x
>
>
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-- 
Thiago Sousa Santos
Senior Multimedia Engineer, Open Source Group
Samsung Research America - Silicon Valley

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