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Also a newbie...learning...
A most basic question still bugs me:
As DV isn't supposed to be prone to generation loss, how do you copy a DV sequence from tape to tape? Don't the codecs involved in capturing&uploading decrease the video quality? Capturing produces an AVI or MOV which aren't lossless, are they? I feel that tape is a good storage for sequences that you'll use later for VCDs, web streams, DVDs. Am I right?
Happy New Year!
Christian
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If the DV AVIs are 'raw' files, and you transfer it back to another DV tape, then you are OK. BUT... if you edit the DV AVIs (by adding fancy stuff like transitions, etc), and in effect 'render' the entire movie, then the file is subjected to slight loss, especially if you're using the MS codec (probably the worse DV codec). -
Where can I load a different DV codec?
When installing my software; VideoWave4, Ulead MediaStudio6.5, i get the option for TI or MS and I always end up with MS!
I can't seem to force the TI driver / codec to load. -
tnx jtor!
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IF u simply want to copy them without loss, do this.
Move the files onto your computer via firewire.
THen put a new tape in and send the movie back over the firewire.
Then put in anouther tape and send it over the firewire.
U r copying off of a digital, lossless master copy.
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get the mainconcept dv codec, its prol the best windoze dvcodec there is
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Hi,
i sue this codec by MainConcept, but if, it creates only files up to 5 GB. My captured material is 25 GB coded with MS DV codec type 1. So how to upgrade the providing of greater files ??
Thanks
HM -
Hi,
Some programs won't re-render (re-encode) the DV stream (or any AVI stream) if it has no changes; in effect you get a 'copy'. Some programs also only re-encode sections that have changed and not the rest.
You may be able to tell what's happening by the time it takes to transfer. Anything <= realtime may be a copy. Longer is probably a re-encode.
Allan -
OK, I am still confuse!
DV to DV:
1) Load the DV from DV camcorder to a computer via firewire.
At the end here I got a big AVI file in the computer using Studio DV 7 software.
2) Take the old tape out from the DV camcorder and put a brand new tape in.
3) Push the record button on the DV camcorder and at the same time click the play on the studio DV 7 on my computer?? (Oh, No! It just recording me and my computer!!!)
What exactly should I do? Someone please! Thankyou!
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How do you copy from an old DV tape to a new DV tape without loose quality. Say if I only have a Panasonic DV100 and a firewire PC and Studio DV 7.
If I use Capture video from Camcorder to PC (it is AVI file) with the original quality option on Studio DV, will this AVI file maintance origiral quality?
How do I copy this AVI capture back to the new tape on the Camcorder?
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syccwe,
>> A most basic question still bugs me:
>> As DV isn't supposed to be prone to generation loss, how do you copy
>> a DV sequence from tape to tape? Don't the codecs involved in
>> capturing&uploading decrease the video quality? Capturing produces an
>> AVI or MOV which aren't lossless, are they? I feel that tape is a
>> good storage for sequences that you'll use later for VCDs, web
>> streams, DVDs. Am I right?
>> a DV sequence from tape to tape? Don't the codecs involved in
>> capturing&uploading decrease the video quality?
The trueth is, YES... there is some quality loss. Not dramatic, but
still some loss, yes.
>> Capturing produces an AVI or MOV which aren't lossless, are they?
Yes, its an DV avi format file (type 1 or type 2)
Yes, they BOTH are lossy, not lossless. Even though the DV is a DV avi
file, hence digital, during the converstion to DV via the DV codec,
there is a conversion, hence some loss there, but not too much.
Always remember, that whenever there is a "conversion" there is loss!
>> good storage for sequences that you'll use later for VCDs, web
>> streams, DVDs. Am I right?
Yes, and no.
But, remember also, that just as VHS tapes are subject to noise and
degration, etc., so are DV tapes. Just because it's digital, dosn't
mean that you'll get pure digital, w/out ANY loss. You'll no-boubt
suffer this loss issue, should you store your DV tapes for long
periods. The only diference being that instead of the same type of
loss in VHS, for DV, it's more ditigal anamilies or weard blocks, etc.
...also, take into count what jtor stated earlier post.
Do what greg12 said, using whatever software that supports
DV and supports the ability to transfer from DV tape to harddrive, and
transfer back from harddrive to miniDV tape via firewire of course.
the mainconcept's dv codec puts a watermark logo on every video frame.
so, you will have to purchase it to get rid of it.
The purpose of this codec, ie, is that you can use vdub to open up DV
avi files and the color wont look washed out, due to the color conversion.
Then, you can re-save, if you like to another codec, ie, huffy or
divX etc.
Never mind about the 5gig limit. Just stop at or before 5gig and
just restart!
hailieu
Yes, the DV avi fle will be approx 14gig for 1 hours worth of miniDV
tape.
3) using your software, ie, studio, there should be a feature to
tranfer your DV avi file from your harddrive, and back to your DV cams
miniDV tapes. The software useually set the DV cam into record mode
IF you set your DV cam to "record" mode by setting your cam "switch"
to vcr or play mode. Once you set up your cam properly, your software
will send the DV avi file to your miniDV tape (record it)
That's it.
The quality setting in Studio will depend on HOW you set it up in the
first place. I don't use studio, so I can't show you the steps.
But, studio will copy (transfer) you DV AVI from your harddrive to
your DV cam's miniDV tape - - remember to set your cam to vcr or play
mode, so that studio can control your DV cam, hence record back to
miniDV tape via firewire card.
That's it!
-vhelp -
I tried everything and there is no way to record back to my Panasonic DV100 from my Sony FA370 PIII 1G laptop. The problem is there is no option on the Pinnacle DV 7 to record to a DV Camcorder. I tried push REC+PLAY on the DV100 and click the play on Pinnacle but the record is blank! No,, No..! Disappoint!
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I've got a feeling that the interface on your camera is output only - it will not accept a DV input - output only. Some of the cheaper models use this as a cost cutting exercise (PS - I'm not saying your camera is cheap by the way). Look in your specifications and you'll probably find that it will say that you can connect it to another camcorder as the source, but nothing about yours being the recorder...
Therefore, regardless of how you output it - you cannot get it back to your camera - lossless or not ! -
It's not true! According to my manual Page 51. (See..)
http://www.pasc.panasonic.com/OperMan/FindManual.asp?Pass=3
It could be copy by pressing REC+PLAY on the camcorder!
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What manual is it - there are 322 manuals...
I've also had a good look on the Web and the US Panasonic site doesn't seem to specify if it has a DV in and DV out - it just says it has a 1394 interface (which agreed should be two way). The UK panasonic site specifies it it has DV in and/or DV Out - the entry level camera only has DV Out - which is where my original though came from.
PS - I assume your camera is in VCR mode not Camera - otherwise your software will not be able to talk to it ! -
I have often thought about the DV codec and the fact that its transfer rate is only about 3.5Mb/sec, whereas uncompressed video of the same resolution is about 20Mb/sec and using the lossless huffy codec is approximately 12Mb/sec.
If this is the case when editing video will you get better results saving as yuy2 using huffy compression rather than saving using the DV codec. I use ulead video studio 5 to transfer DV video to my hard drive and it gives the option to save in any format not just DV. I have done so in the past so that I could open the video in Virtualdub, as Virtualdub will not open video saved using the DV codec.
How can the DV codec be a lossless transfer at only 3.5 mb/sec when uncompressed video is 20mb/sec?
Could better results be achieved by not using the DV codec at all and saving as uncompressed or using huffy?
Craig -
">> a DV sequence from tape to tape? Don't the codecs involved in
>> capturing&uploading decrease the video quality?
The trueth is, YES... there is some quality loss. Not dramatic, but
still some loss, yes.
>> Capturing produces an AVI or MOV which aren't lossless, are they?
Yes, its an DV avi format file (type 1 or type 2)
Yes, they BOTH are lossy, not lossless. Even though the DV is a DV avi
file, hence digital, during the converstion to DV via the DV codec,
there is a conversion, hence some loss there, but not too much.
Always remember, that whenever there is a "conversion" there is loss! "
Uhm, i've gotta disagree. The dv encoding is done by the camera as it records the video digitally to the tape, not during the transfer. THe transfer is completely digital, no compression, no encoding, just an exact copy of the digital stream wrapped in an avi file so you can manipulate it. Same thing going from a DV avi file back to the camera. There is no "conversion" for there to be a loss, otherwise you might be right, this case is simply a wrapping rather htan conversion.
Proof of this is to take a dv avi file, look at the binary strand, send it to a camera, bring it back, and compare the binary strand again. They're exactly the same.
Just wanted to clear that up. DV transfer is completely lossless. (If only reencoding were too!)mmm....unexplained bacon...
Our extended forecast calls for flurries of passion followed by extended periods of gettin it on.
-Homer -
in reply to craigtucker:
the only thing that working with uncompressed files is going to gain you is outrageous filesizes and less loss during rendering. But the quality will not increase, as the 3.5Mb/s and other specs of DV are done during the recording, that's what is on the tape. Capturing your DV source rather than transfering introduces two problems: first, it becomes an analog game, which is what DV is meant to avoid; second, you cant "undo" the effects of the camera's dv encoding by increasing the bitrate later in the game.
Solution? Buy a professional level camera that records full DV or BetaSP and get a deck that has component outputs and a video card that has those inputs (aka, build a studio).mmm....unexplained bacon...
Our extended forecast calls for flurries of passion followed by extended periods of gettin it on.
-Homer
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