Black Screen When Running SimpleBodyViewer-SFML

pkr97 2018-06-15 16:28:11 UTC #1

Hello All,
I'm trying to work with body tracking. I have the newest Astra SDK.

It's working for other applications but when I try to run SimpleBodyViewer-SFML or ColorizedBodyViewer-SFML, it shows only a BLACK screen and nothing else.

How to solve this?

Thanks,
Prasanna

gaborpapp 2019-01-10 15:44:27 UTC #2

Hello,

I'm encountering the same issue with the latest AstraSDK-v2.0.14-8dd7d5344a-20181210T213031Z-Ubuntu1604.tar.gz in Linux.

All other samples work, but the body tracking one shows a black screen.
Even the output of the BodyReaderPoll sample is empty. It seems that astra_reader_open_frame returns with timeout error.

Any suggestions to solve this would be appreciated.

-Gabor

gaborpapp 2019-01-11 19:37:22 UTC #3

The BodyTracking plugin requires libpng12. If it cannot be loaded it fails silently unless the log level is raised in astra.toml. Installing libpng12 solves the issue for me.

pierrep 2019-02-21 01:31:57 UTC #4

I can confirm that installing libpng12 is also needed to get the body tracking working on Ubuntu 18.04.

You can install the .deb here as 18.04 doesn't have it by default in the repos:
https://packages.ubuntu.com/xenial/amd64/libpng12-0/download