VCU TRD vcu_gst_app and /media/sata /media/usb files

[charlie0611]

Hi,

I have been unable to get video to display on my Display Port with the vcu_gst_app. Further, I'm puzzled by the statement in the wiki:

====

1.3.2 GStreamer Application (vcu_gst_app)

The vcu_gst_app is a command line multi-threaded Linux application that uses the vcu_gst_lib interface similar to vcu_qt. The command line application requires an input configuration file (input.cfg) to be provided in the plain text. Refer to the Appendix A - Input Configuration File (input.cfg) for the file format and description.

Before execution of vcu_gst_app, we need to check the HDMI-Rx link status. Refer Appendix B for how to check the HDMI Link Status

• Execution of the application is shown below:

% vcu_gst_app < path to *.cfg file>

Note: Required Storage medium SATA and USB are mounted at /media/sata and /media/usb respectively.

====

Where are the files that are mounted as /media/sata and /media/usb? Note that these aren't mounted and I see nowhere in the wiki steps where these files are copied to the SD card.

I try to do a simple config file with the TPG being output to the DP, but I get no video. Am I missing something? Config file below.

====

Common Configuration    : START
Num Of Input            : 1
Output                  : DP
Out Type                : Display
Display Rate            : 60
Exit


Input Configuration     : START
Input Num               : 1
Input Type              : TPG
Uri                     : file:///media/card/vcu_records/test.mp4
Raw                     : TRUE
Width                   : 3840
Height                  : 2160
Exit


Encoder Configuration   : START
Encoder Num             : 1
Preset                  : HEVC_HIGH
Exit


Record Configuration    : START
Record Num              : 1
Out File Name           : /media/usb/test_1.mp4
Duration                : 1
Exit


Streaming Configuration : START
Streaming Num           : 1
Host IP                 : 192.168.25.89
Port                    : 5004
Exit

Trace Configuration     : START
FPS Info                : TRUE
APM Info                : FALSE
Pipeline Info           : TRUE

====

Any guidance appreciated.

Thanks,

Charlie Hamilton

[charlie0611]

I have gotten the HDMI output to work with a similar config file, but when switching to the Display Port output, it doesn't work.

[florentw]

Hi @charlie0611,

• DP issue:
  Did you try with the pre-built images (full VCU). Can you get the DP output to work?
• /media/sata /media/usb
  You will mount your device if you have any connected (ex USB stick). This can be used to save the encoder output or as decoder input

Hope that helps,

[charlie0611]

Hi,

I have tried the prebuilt images and don't get DP output with vcu_gst_app. With the config file I'm using I get HDMI output, and the only thing I am changing is the output port from DP to HDMI.

As for the question about the files, I want to find the actual files that are referenced in the numerous config files that are in the /media/card/config directory on the SD card. I would like to use these files because the ones I've tried don't display. I was hoping to use reference files that you refer to in your config files. 

Thanks,

Charlie

[florentw]

HI @charlie0611,

Could you try the full VCU TRD pre-build images (rdf0428-zcu106-vcu-trd-2018-2.zip\rdf0428-zcu106-vcu-trd-2018-2\images\vcu_trd\rev-c) and see if you can get the DP working?

I am not sure what configuration files you are referring to...

[charlie0611]

Hi florentw,

I already tried the prebuilt images. The DP works with the gui app, but not with the command line app (vcu_gst_app) with the prebuilt images.

I no longer care about the files referenced in the config files (found on /media/card/config/1-4kp60, /media/card/config/2-4kp30, etc.). These files have names like test_1.mp4, etc., and they point to the /media/usb directory. We can use other files for our scripts.

Thanks,

Charlie

[florentw]

HI @charlie0611,

Could you try to use the vcu_gst_app with output parametrized to Dp but with a HDMI monitor also connected?

[charlie0611 · Accepted solution]

Hi,

This is resolved. Rebooting and running vcu_gst_app without first running vcu_qt was the problem. In order to get display port output with vcu_gst_app, I had to run vcu_qt first. I'm guessing it has something to do with enabling the GPU.

Marking solved.

Thanks,

Charlie