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TTL SERIAL CAMERA: M-JPEG output
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TTL SERIAL CAMERA: M-JPEG output

by user007 on Fri Jun 14, 2013 7:43 am

Hello,
I'm using Adafruit JPEG Camera (ID: 397) as part of my masters project. Currently, I can successfully get jpeg images out of the camera, but I'm wondering how I can use the camera to get m-jpeg video.

Is it possible to get m-jpeg video using the serial interface ?
Is it possible to video record using the VC0706 Comm Tool ?

Can you please help me?
,,,
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Re: TTL SERIAL CAMERA: M-JPEG output

by adafruit_support_bill on Fri Jun 14, 2013 7:50 am

The serial interface is too slow for that . It takes a few seconds per frame at least to transmit the jpeg data.

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Re: TTL SERIAL CAMERA: M-JPEG output

by user007 on Fri Jun 14, 2013 8:02 am

adafruit_support_bill wrote:The serial interface is too slow for that . It takes a few seconds per frame at least to transmit the jpeg data.


Thank you very much for your reply,

but how does the camera provide its m-jpeg output?
Also, is it true to assume that the CVBS pin outputs an analog signal?
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Re: TTL SERIAL CAMERA: M-JPEG output

by adafruit_support_bill on Fri Jun 14, 2013 8:45 am

Good question. There is no mention of m-jpeg in the Comm tool manual. The DSP datasheet implies that the UART interface can be used to transmit frames & the SPI interface can do both frames & video. Unfortunately, the SPI interface is not broken out on the board.

http://www.adafruit.com/products/397#Downloads

The CVBS pin is an analog composite video signal.

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Re: TTL SERIAL CAMERA: M-JPEG output

by user007 on Fri Jun 14, 2013 9:12 am

adafruit_support_bill wrote:Good question. There is no mention of m-jpeg in the Comm tool manual. The DSP datasheet implies that the UART interface can be used to transmit frames & the SPI interface can do both frames & video. Unfortunately, the SPI interface is not broken out on the board.

http://www.adafruit.com/products/397#Downloads

The CVBS pin is an analog composite video signal.

:(
Thanks,

but I believe this should be clearly indicated in the technical details: http://www.adafruit.com/products/397#Te ... %20Details, where it currently states that the output is standard JPEG/M-JPEG, however there is no M-JPEG output with the current hardware settings.
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Re: TTL SERIAL CAMERA: M-JPEG output

by adafruit on Fri Jun 14, 2013 9:42 am

OK, description updated!

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