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>>> compression ratio at Best Quality <<<

 
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success2be is offline Old Post 06-26-2004 03:50 AM
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success2be
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compression ratio at Best Quality

Anyone know the compression ratio at Best Quality for standalone series 2? Since signal is passed as analog to TiVo, then TiVo converts to digital for storage I think we'd need infinite storage to store at original or mint quality. TiVo would have to draw the line some where on the sample rate of the analog signal for storage.

Just wondering since I can notice a little imperfections on my 19" screen at high quality. I'm getting a new 27" soon and it probably be more noticeable. So I'm wondering if I probably have to record more shows at Best.

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c-collins is offline Old Post 06-26-2004 05:07 AM
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c-collins
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I have a 27 inch TV and at best quality the picture is almost perfect. I imagine the defects only come out on the real big boys 40 inch and above.

Its comcast digital cable w/ a S-vid cable from cable box to tivo and another s-vid from tivo to tv.

Its also a matter of taste I record most everything in Best quality. However if your input signal is clean even things recorded in basic look pretty good most of the time. No worse than a VCR on EP.

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success2be is offline Old Post 06-26-2004 05:48 AM
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success2be
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quote:
Originally posted by c-collins
I have a 27 inch TV and at best quality the picture is almost perfect. I imagine the defects only come out on the real big boys 40 inch and above.

Its comcast digital cable w/ a S-vid cable from cable box to tivo and another s-vid from tivo to tv.

Its also a matter of taste I record most everything in Best quality. However if your input signal is clean even things recorded in basic look pretty good most of the time. No worse than a VCR on EP.



It's nice that you have S-Video from your STB. Unfortunately all I have are the composite and RF outs for mine. Now that I'm getting a 27", I might just cancel digital cable, get the HD cable for my Xbox, hook it up and watch movies from NetFlix in 480i. Come on TiVo, I want to download movie rentals via TiVo2Go.

On another note, I wonder if its possible for an adapter that plugs into the USB port and output the signal in component 480i or 480p for standard definition. That'll give the TiVo longer shelf life.

Last edited by success2be on 06-26-2004 at 05:53 AM

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Dan203 is offline Old Post 06-26-2004 06:14 AM
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Best quality is encoded as 544x480/MPEG-2 @ 6Mbps.

Dan

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HerronScott is offline Old Post 06-27-2004 12:00 AM
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quote:
Originally posted by Dan203
Best quality is encoded as 544x480/MPEG-2 @ 6Mbps.

Dan



Dan,

Do you have the encoding specs for the other TiVo recording levels?

Scott

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ccwf is offline Old Post 06-27-2004 01:21 AM
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Re: compression ratio at Best Quality

quote:
Originally posted by success2be
Anyone know the compression ratio at Best Quality for standalone series 2? Since signal is passed as analog to TiVo, then TiVo converts to digital for storage I think we'd need infinite storage to store at original or mint quality.
Do a web search for Nyquist or the Sampling Theorem.

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