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Old 14th March 2011, 12:03   #1  |  Link
atessadri
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Join Date: Mar 2011
Posts: 2
Testing DVD progressive scan (MPEG decoder + deinterlacer)

Hello everybody,
I am trying to setup a simple test bed for comparing performances of several DVDs, all equipped with HDMI output and Full HD compliant 1080P (as declared by the supplier)

I bought the DVD Demystified test disc and I am playing with it.
A video is repeated using different rates, from 1.0 Mbps up to 9.8 Mbps.
Surprisingly, when I play the video on a DVD connected via HDMI to a big LCD screen, 1080P resolution, I cannot see any difference in quality for rates higer than 5.0 Mbps.
Do you think the chip (SUNPLUS SPHE8203R) mounted on the DVD is not able to handle high bit rates and it simply doesn't afford to decode completely the image ? (I am not an expert of MPEG, sorry, but I am trying to improve ...)
I can say that the link to the TV via YUV or via HDMI gives the same result. How is possible ?

About the deinterlacing function, I run few tests with black and white patterns containing thin horizontal lines. I see those lines flickering ...
How can I check if the deinterlacer is properly working ?

My idea was to capture the digital video using a device like BlackMagic Intensity Pro, but then how can I check that:
1) the MPEG elementary stream is not properly decoded
2) the deinterlacer is able or not to detect a stream in film-mode

Thank you in advance for your help.

Andrea
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chip, deinterlacer, hdmi, mpeg, test

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