Re: 8X DVD Burner only reliable at 4X


"AnthonyR" <nomail@xxxxxxxxxx> wrote in message
news:BFlRe.22126$%w.925@xxxxxxxxxxxxxxxxxxxxx
>
> "Steve Guidry" <steveguidry@xxxxxxxxxxxxx> wrote in message
> news:EA4Re.4750$FW1.85@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> My experience on this matter : I've authored or overseen the authoring
>> of
>> several hundred discs, and I've run a small disc copy operation - -
>> 50,000
>> or so burned discs over the past 4 years.
>>
>> My advice : You can do lots of research, and buy the best burners and
>> the
>> best media. But in the end, over the long haul, you'll be back to 4x if
>> you're trying to get maximum compatibility. In our operation, if it's an
>> important master, we burn at 2x. This is doubly important if you're
>> doing
>> high bit-rate encoding, as the data is just so dense.
>>
>> I could be wrong, but I suspect that the folks who are getting "perfect
>> 16x
>> burns every time" are either not exposing their end product to wide
>> variety
>> of playback units, or just plain haven't done enough of them.
>>
>>
>> Steve Guidry
>> Video Works, Inc.
>> Live events for TV and Video
>> www.videoworksinc.com
>> 800.844.4404
>>
>>
>> Steve,
> Thanks for that, interesting point of view coming from someone with so
> much experience.
> I technically can't understand the difference between a dvd burned at 16x
> with no burn errors
> and which passes disc error rates scans with flying colors and one burned
> at lower speeds?
>
> I do think you need to match the burning speed with the sweet spot of the
> dye used, to get the most
> error free burns. If the dye is reacting to the laser properly (matched
> well) then you get good reaction together.
> I have read on a post somewhere were using too slow a burn speed on dvd's
> designed for high speed burning was yielding higher
> than normal error rates also, so i think the key is to test well and find
> the sweet spot that works for media used.
>
> I'm not sure about what you said about higher bite rates being more
> densely packed?
> It makes sense if you have a higher bite rate, you will obviously fill the
> entire disc, and that in
> itself causes lots of problems as the outer edge is harder to read by the
> player.
> Also DVD's authored with high bit-rates run into more compatibility errors
> with dvd players in general
> which aren't able to read and process at high bite rates (even if within
> the specs of dvd).
> Lots of dvd players are older 1x readers and can't handle reading high bit
> rates, I would assume.
>
> I also want to ask, do you verify the data directly after the dvd has been
> burned? I know this slows things down somewhat
> since it has to be read and then compared to what was suppose to be
> written, but i find this step is worth it in weeding out
> errors. The dvd with 1 or more such errors seems to play fine most of the
> time but eventually has a glitch that can freeze
> on some machines or cause it to stop when being read at fast forward etc.
> With older media, I found many such bad burns at that was at 4x back then,
> now I hardly ever get one disc that hasn't passed
> the verification process successfully. So the speed i gain at 16x helps
> make up in the time it takes to verify the dvd after the burn. :)
> But the peace of mind I get when it passes is worth it to me.
>
> I am concerned about greater compatibility, and will keep your advice in
> mind, if I start getting complaints. Thanks!
>
> AnthonyR.
>

I forgot to add, with DVD media...they didn't have this problem, cause they
could use same material in manufacturing process then
code it differently so firmware can only record at the specified rate
anyway, so they thought they found nirvana, lol
At least before modified firmware came to be that allows burning 16x on
DVD's sold as only 8X.
:)

AnthonyR.


.

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