DM8168 maximum camera input resolution?

DM8168 cant support 3200X2400, you can look for 8148 where ISS can support in terms of Mega pixels.

do you mean dm8148 can get that image(3200x2400)?

Hi Please find my answer inline

1. Required is 12MP camera interface. But what is the max. resolution camera can be interfaced to all of the above TI parts.?

[Eason] There  is limits therotically, depends on the device/port but the actual max resolution is not verified. Would you provide the width/heigth you want and I will try to check if it is ever verified ?

2. What is the maximum resolution camera still image can be stored in SD card?

[Eason]  I dont think there is limitation on this.  what you need to taken care is the data rate of the SD port.

3. whether camera video streaming and HDMI display without storage is 1080p @ 60fps.

[Eason]  For each device we have documents talking about the performance of each usecase.  For the devices you listed, they all meet this requiremnet.

4. whether camera video stored in SD card in H.264/MJPEG is 1080p @ 60fps.

[Eason] about DM8127/DM385, For either H264 or MJPEG there performance can reach 1080p60, but can not do together for 60. 30fps is possible.

For DM8168, because it has 3 HDVICPs, it can support h264 and Mjpeg both 1080p60

5. whether stored camera video in H.264/MJPEG is played on HDMI with 1080p @ 60fps.

[Eason] Yes , supported.  Pls refer to 4.

Dear Eason

12MP may be 4056 x 3044 .

In DM8168 TRM document its mention the support upto 1920 × 1200@60 Hz (165 MHz) input data rate supports 16-bit mode input port.

1. Is this means that 1920 x 1200 is the max frame size for video/image capture?
2. Since i need to capture video and still image. what can be the maximum resolution still image can be captured & stored without any encoding?
3. similarly what is the maximum video resolution can be captured & stored without encoding ?

For above cases 2 &3 , supports without any memory failure and any other failures

Regards
B. Eshak

Dear Eason

1. Please clarify if i am wrong ,whether bit rate for the camera input should not exceed 165Mhz(bit rate < 165Mhz)?

2. Is there any formula to calculate the bit rate for camera stream (image/video) with respect to resolution, frames per second and bit depth.

    So that i can confirm that 12MP is too large to support and also what could be the max. resolution that can be captured from camera.

I agree that for storage again the bit rate for SD interface comes in picture. since i could see that max bit rate support for SD is 192Mbps, 4-bit transfer.

Regards

B. Eshak

I found some infomation here ：

The VPDMA maxWidth/maxHeigth are set to

#define VPSHAL_VPDMA_MAX_FRAME_WIDTH            (4096u)

#define VPSHAL_VPDMA_MAX_FRAME_HEIGHT           (2048u)

this is hardware limitation, cannot be changed using firmware.

1. The 165MHz is hardware limitation.  Please dont exceed that clock rate.

2. For example, If you want to use YUV422 data, then each pixel will cost 2Bytes(8bit depth).   W*H*2*fps  BYTEs, I think

Remember than DM8168 has 2 Video Inputs, you can split the image into 2 parts and merge inside the chip.

But since you are not doing the encoding, why not use FPGA to do that?

BR,

Eason

Dear Eason

Please confirm whether DM8168 can be checked theoretically whether 12MP can be interfaced to camera port.?

Since 12MP is not be tested practically.

Regards

B. Eshak

Dear Eason

Request you to clarify below queries on DM8168.

As you suggested two approaches:

1. "Remember than DM8168 has 2 Video Inputs, you can split the image into 2 parts and merge inside the chip." Please explain this in brief , how this can be achieved?

2. DM8168 with FPGA glue logic, is this already implemented?
Please guide me to this support

Thank you

Regards

B. Eshak