Video & Project Properties

sportswizdan · Post by **sportswizdan** » Thu Mar 31, 2005 3:52 am

Please Help!!! I'm Capturing thru a sony dv device via firewall to my pc. I'm capturing to:
Dv-Avi Files
24bits,720x480,4:3,29.97fps
lower field first
dv encoder type 1
dv audio-ntsc,48.000khz,16bit,stereo

NOW, after I stop capturing,it asks me if I want to change the project settings to match the videos properties...everything is the same EXCEPT my VIDEO AUDIO PROPERTIES are:
dv audio-ntsc,32.000khz,12bit,stereo

Should I answer yes or no because of the difference in the audio properties. I dont want any OOS problems...Also If you say I should answer "yes" to that...what about when I get to the burning phase and it asks me the same question? What are my options? Thanks to all
Dan

rwernyei · Post by **rwernyei** » Thu Mar 31, 2005 4:11 am

Dan,
Do you have 16 bit stereo enabled in your menu settings on your Sony cam? 32000 khz is displayed in file properties when a file is captured with mono audio. This also happens when one does an analog to DV conversion using rca composites and not using both L/R audio. If it is this and your analog source does not have 3 composite inputs/outputs, a workaround is to capture using DV Type 2. Hope this helps.

sportswizdan · Post by **sportswizdan** » Thu Mar 31, 2005 4:58 am

rwernyei...thanks for responding. I looked on my sony camcorder menu and yep...its been set on 12 bit since I purchased it 2 years ago. Also it is a Hi-8 digital camcorder...but I can also play my older hi-8 tapes back thru it BUT my pc recognizes it as a digital connection because of the firewire connection. So...I changed it now to be at 16 bit but ALL the tapes I recorded are in 12 bit...When it asks me if I want to change the "project"
properties to match the "video" properties...Do I answer yes even though to match it it will be at 32.000khz and 12 bit???Ang again when I get to the burn stage...what do i answer? Thanks to all, Dan

sportswizdan · Post by **sportswizdan** » Thu Mar 31, 2005 5:02 am

one more thing...about the inputs...it goes from one audio/video connection from my camcorder...to the s-input for video and 2 seperate connections for audio for my tv...when I connect to my pc its with a firewire. Hope this helps

rwernyei · Post by **rwernyei** » Thu Mar 31, 2005 5:36 am

Dan,
At least the rest of your captures will work as planned and your setup sounds good. S-video is much better for video than composite video. As for the other tapes recorded in 12 bit mode. If you say YES, you run the risk of adding noise to your audio track and before authoring to DVD the 32 khz audio will need to be transcoded to 48 khz as that is the DVD standard which will result in more time. As I mentioned before in my earlier post, you could firewire capture those 12 bit source tapes using DV Type 2. In your capture settings switch DV Type 1 to 2 and the difference will be the audio will be captured in LPCM(WAV) format rather than DV Audio and file size will be a little larger.

sportswizdan · Post by **sportswizdan** » Thu Mar 31, 2005 6:19 am

When I change it to type 2 it now says:
pcm 32.000khz,16 bit,stereo
Is this ok? Again, I dont want any added problems for OOS. So, let me get this straight...On my tapes recorded in 12 bit-I should use type 2 and the new ones that are in 16 bit, iI should do in type 1?Thanks for all the help. Dan

rwindeyer · Post by **rwindeyer** » Thu Mar 31, 2005 7:04 am

I have a small amount of experience in this; like you my camera was set on 12 bit for sound, until I woke up and adjusted it to 16 bit.
From my experience, you will not get OOS problems. There may be a little extra processing time (converting from 32000 to 48000), but I recommend that's what you should do. For processing and recording to DVD your sound track should ideally be at 48000.
And, by the way, use DV type 1 for all capture. I did, and it seemed to work just fine.

sportswizdan · Post by **sportswizdan** » Thu Mar 31, 2005 7:47 am

Ron, thanks for the help. Ok, Before I burn my DVD I will change it to 48.000khz,16 bit, stereo...but...after I'm done capturing...Should I say "yes" to match the video properties(32.000khz,12bit,stereo) or say "no" and leave the audio at the 16 bit rate with the 48.000khz? Anyone else please help me out, Thanks, Dan

Trevor Andrew · Post by **Trevor Andrew** » Thu Mar 31, 2005 8:58 am

I used 12 bit for quite a while until i was corrected.
Had no problems with audio.

select 'yes' to the message.

After editing create a video file, select format Dvd
This should select the correct audio for Dvd.

Have a read at My Quick Guide for Avi

http://www.stephen-wray.co.uk/lata/vs/g ... de_avi.htm

maddrummer3301 · Post by **maddrummer3301** » Fri Apr 01, 2005 5:25 pm

>When I change it to type 2 it now says:
>pcm 32.000khz,16 bit,stereo

That is WRONG unless you typed it wrong.
The Dv.avi file should be 12bit 32khz OR 16bit 48khz.
If 32khz 16bit is what the file says you will have audio problems.

Use either 12bit 32khz OR 16bit 48khz.

Go with the original 12bit 32khz Type 1.
If you edit the dv.avi file perform all editing "Project Properties" the
same as the source properties.

Mark a small 5 minute clip and export it as a Mpeg2 dvd
compliant file. Test the file, Burn a test disk.
Let VS convert the dv.avi audio from 12/32 to 16/48 xxx.

MD

sportswizdan · Post by **sportswizdan** » Fri Apr 01, 2005 6:28 pm

MD,
You are right, I typed it in wrong. My video project properties for the audio were:
32.000khz,12bit,stereo....not 16 bit, sorry
Thanks for the advice, I appreciate it.
Dan

maddrummer3301 · Post by **maddrummer3301** » Sat Apr 02, 2005 3:07 am

Dan,
The reason I pointed that out is because sometimes when starting a
firewire/dv.avi transfer recording from the absolute beginning of the tape
the wrong audio information can be written into the dv.avi file.
The beginning of the dv tape isn't always a good stream and gets
interpreted wrong. This has happened to me starting from the absolute
beginning of some dv tapes. So I've ended up with a 12gig file that
I had to re-record again.
Also, if one part of the tape is 12bit and another section 16bit can
cause audio problems.

If starting from the absolute beginning of a dv tape I do the following now.
When using ulead to record dv.avi i run the tape about 5 to 10 seconds
then hit the record icon. That seems to work on my system.
This also depends on the camcorder.

Others have had problems when recording the audio at 12bit 32khz.
Thinking back I believe the problems were caused because they
were editing the dv.avi file and the project properites audio didn't match
the source dv.avi files audio. In other words the source audio was
12bit 32khz and the project properites were 16bit 48khz audio.
Simply always leave the project properties equal to the source file
properties until you create the final conversion of dv.avi to mpg2.

Owning a dvd recorder is a nice asset. Doesn't matter what audio is
on the tape it gets converted properly.

Hope this helps,

MD

sportswizdan · Post by **sportswizdan** » Sat Apr 02, 2005 3:24 am

MD and everyone else,

Thank you very much for all of the information. It will help greatly.
Dan

thecoalman · Post by **thecoalman** » Sat Apr 02, 2005 3:44 am

FYI, there's no difference between DV1 and DV2 except how the audio is stored. Some editing apps require DV2 but VS8 doesn't so DV1 should be fine and will produce a slightly smaller file.

I've heard it argued that DV2 works better for maintaining sync but in my personal experience I have had no trouble with DV1 so it's the only thing I have used simply because it produces the smaller file size.

http://www.microsoft.com/whdc/archive/dvavi.mspx

Post by **Ken Berry** » Sat Apr 02, 2005 12:11 pm

... and I consistently use Type 2, and have never had any problems with sync (let alone the dread daylight savings problem!) Go figure...!!!