Jetson TX2 JetPack4.2 Multimedia sample/07_video_convert issue

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

hi:
I use opencv-3.3.1 line and putText function put osd on rgb image, use video_convert convert it to nv12 , then i get a black osd image。
convert cmd:
cd tegra_multimedia_api/samples/07_video_convert
sudo ./video_convert …/src.rgb 1920 1080 ABGR32 …/dst.yuv 1920 1080 NV12M
thanks
simple.zip (3.08 MB)

2

Hi,
I can see dst.yuv in freeware 7yuv:
External Media
Plase use 7yuv as the tool.

3

thanks for your reply, my question is osd color changed. please see src.rgb , example: “No TF Card” should be red. src.rgb is a ABGR image.

4

Hi,
We can observe the issue and are checking. Will update.

5

Hi,
what time is it update? i can download it from where?
thanks

6

Hi,
We are still checking the issue.

7

Hi,
Please notify me if there is any update. Online, etc.

8

Hi,
The issue is because alpha channel is not correct. For white color, it should be

255 255 255 255

But in attached src.rgb, it is

255 255 255 0

When alpha channel is 0, it is completely dark. You may refer to

Please do what is suggested in below post:
https://devtalk.nvidia.com/default/topic/1045453/deepstream-sdk-on-jetson/how-to-draw-lanes-on-the-video/post/5315160/#5315160

*edit* I have discovered that setting the alpha to 255 would fix my problem.
9

Hi,
The problem is solved，thank you.