there is a line on vedio file when using CameraDshowApp to display vedio

Huai Hellen

Expert 1030 points

Hi,

I used CameraDshowApp.exe based on bsp6.14.01 to play vedio on evm2.

Is there any notes I need pay attention to or modify source code?

over 14 years ago

0 Huai Hellen over 14 years ago

Expert 1030 points

Below is the picture I captured on my custom target. and the picture on evm board is similar with this.

You may notice the yellow line on the right edge. How to delete the yellow line?

0 Jatin Jain over 14 years ago in reply to Huai Hellen

TI__Genius 9185 points

Huai,

There must be a mismatch of resolution/dimensions somewhere. What are you using to capture (Composite, S-Video?) and at what resolution. What you have on the screen is a playback version of the encoded file or is this the capture preview window?

Jatin

0 Huai Hellen over 14 years ago in reply to Jatin Jain

Expert 1030 points

Jatin,

the captured signal is compostie and the resolution is 720*480. and the screen resolution is 800*480, that is it has been scretched in horizontal direction.

it is the capture preview window not a playback version

0 Huai Hellen over 14 years ago in reply to Jatin Jain

Expert 1030 points

Jatin,

Could you describe which registers/ parameters the dimensions refer in detail? I edit the CCDC_HORZ_INFO register, it could not delete the line, just changing the line position on screen.

And when there is no signal input, the line still exsits.

0 Huai Hellen over 14 years ago in reply to Huai Hellen

Expert 1030 points

I adjust the start position for ISP and resolved this issue.

0 Jatin Jain over 14 years ago in reply to Huai Hellen

TI__Genius 9185 points

Can you post the change in code (specifically what exact value you used for the ISP start). Thanks.

0 Huai Hellen over 14 years ago in reply to Jatin Jain

Expert 1030 points

In fact, I change little notes in code, just SPH, from default value 202 to 112. In addition, I disable the macro "ENABLE_BT656" which was enabled by default.

The other change is in my application, where I change the start display position for ISP in hirzontal direction from 0 to 10.

Now, it can display full screen. However, there is sawtooth when play the captured composite signal, while stopped, the sawtooth disappears.

Maybe is there some mismatch for odd and even field? or other reasons? Thank you!

0 Jatin Jain over 14 years ago in reply to Huai Hellen

TI__Genius 9185 points

Since there is a separate thread for the sawtooth issue (http://e2e.ti.com/support/embedded/f/353/t/84132.aspx), let's close out this thread that is specific to the yellow line at the right of the screen.

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there is a line on vedio file when using CameraDshowApp to display vedio