Page 1 of DVD Recorder - High Speed Dubbing

When recording, using a DVD Recorder with an internal Hard-Drive, is it advisable to use High Speed dubbing? :/

I`m after the best image quality.

The problem is if the recording is made to the Hard-Drive of the recorder it cannot be recorded onto a DVD-R in a High-Speed dub to save time. It has to recorded in real time. And that can be very time consuming! You can only use High-Speed dubbing if the original recording was also recorded in High-Speed!

Does High-Speed reduce image quality? :/

Cheers for any info / hints / help. ;)

I don`t think that there is a `High Speed` option when recording to hard disc. I think that your problem lies with the Compression factor (SP, LP, XP etc). If, for example, you have recorded to the hard disk using XP and you then wish to copy to DVD-R using a different compression, perhaps SP, the unit will not allow high speed copying. You must retain the same compression if you wish to copy at high speed.

When you change the compression the machine has to re-compress the data, and doesn`t have sufficient processing power to do this at high speed, hence the limit of real time copying.

HTH

Actually, the Panasonic model I`m using has High-Speed option on the menu. This option is for making recordings onto the Hard-Drive. If this option is set to "OFF" then the recording can ONLY be burnt onto a blank disc in real time. To burn in High-Speed the Panasonic needs the original recording on the Hard-Drive to have been saved with the High-Speed option set to "ON".

My setting for recording quality is currently set to XP (the highest).

Having a High-Speed dub option "ON" would save time but what about visual quailty?

Nobody knows why the option is `off` by default. There is something about recordings being in 4:3 but it`s not true - just the widescreen flag isn`t recorded - if you have a widescreen TV anyway then it makes no difference.
Turn the option on - there is no difference in recording whatsoever.
The setting simply means the recording can be transferred quicker to HDD PROVIDING IT WILL FIT. i.e. if you record 2 hours at XP then because a DVD can only fit 1hr of video at XP then it will need re-encoding and the dub will be done in real time - i.e. 2 hours. If it was done in SP though, it would only take 5 mins or so to dub to disc...

Ste

I stand corrected. I wonder what that option actually does???

Best way to retain quality is to use high speed .

This is a simple transfer of files from one drive to another.

Changing compression results in a small loss of quality that you may not even notice.

If you know the running time of your finished edit on the HDD just make sure you record in the appropriate quality

Quote:
Best way to retain quality is to use high speed .If you record at a certain quality and dub at the same quality the `final` version is identical - whether it is dubbed at high speed or not. As I said, it`s a pointless option but you need to have had it switched on when the recording was made to dub at high speed.
On the Pannys you`re best using FR mode and selecting the exact recording time (plus a few minutes) so you get the maximum bitrate you can to fill the disc..

Ste

This item was edited on Thursday, 1st March 2007, 23:30

On my panny in the manual it mentions something about the option being off because it needs to for recording bilingual audio, which I think is just used on mainland Europe, countries like Switzerland where they speak more than 1 language. I remember turning it off, and it asked if I was sure.

In any case I usually record SP, and if I want to dub it to DVD I do in high speed. As others have said, it`s just copying a file from the HDD to a DVD.

if you have a 2.5hr film, and put that on DVD, it will do it at normal speed with flexable record on, but then the last section will be at lower quality to fit.

Al

This item was edited on Friday, 2nd March 2007, 06:59

Quote:
I remember turning it off, and it asked if I was sure.Why would you want to turn it off?
Quote:
if you have a 2.5hr film, and put that on DVD, it will do it at normal speed with flexable record on, but then the last section will be at lower quality to fit.If you have a 2.5 hr film you should record it in flexible mode - only if you plan to dub to DVD. Then the quality will be adjusted to suit - not as high as SP mode but saves you dropping down to the LP mode. And it will all be dubbed in high speed mode without changing quality for the end.

Ste

Quote:

I remember turning it off, and it asked if I was sure.

Why would you want to turn it off?
I turned off the bilingual thing, so I could dub in high speed.

so as for the dubbing to a dvd, is what you`re saying, a 2.5hr film will be slightly less than sp for the full 2.5 hrs. but the way I understood it was it did the 1st 90mins sp, then the last hr lp.

But I thought if I set it to record FR onto the hdd, it would do it xp assuming I had room, then when I dub it to dvd, it uses FR so has to do it in real time to fit on disc.

Or do you mean if I did it FR straight to dvd? I don`t normally do that so I can cut out the adverts etc.

Al

This item was edited on Friday, 2nd March 2007, 09:57