Problem converting dv/avi files to dvd.

SF2MJ · Post by **SF2MJ** » Tue Dec 30, 2008 3:14 am

vidoman wrote:Yes, that's just a balance between quality and speed it takes to render. I've always left it at 70..

Ok i am just converting a small avi clip of mine now.Using the mpeg-2 setting at 8000kb
Seeing if i lose quality again.

SF2MJ · Post by **SF2MJ** » Tue Dec 30, 2008 4:22 am

Ok i just tried the mpeg-2 compression setting on 25000kbps.And i am still getting blurriness.

This is ridiculous.

Devil · Post by **Devil** » Tue Dec 30, 2008 8:08 am

Can you do a frame capture from the DV AVI and the same frame from the MPEG and post them on one for free pisture sites, so that we can see the difference, please?

SF2MJ · Post by **SF2MJ** » Tue Dec 30, 2008 8:57 am

I did that...and when it's a still image you can't tell the difference.
You have to see it in motion.

Maybe i can just get a good avi to dvd converter program.
One of the other posters asked me to eidt everything i wanted to edit and then to create a video file .but use save as first video clip.
I did that.And it worked great.It saved my edited home movie as one big 15 gig file.No loss in pic quality.
Now all i need is a good avi to dvd converter program that won't make me lose quality.

Trevor Andrew · Post by **Trevor Andrew** » Tue Dec 30, 2008 11:17 am

Hi

If you converted your project to DV-Avi and the size is 15@gb then the length is greater than 60 minutes.
How long is the video file????????????????????
If its greater than 60 minutes you would have to reduce the bitrate.
If you use the standard VS template Pal-DVD this would use 8000, this is too high, and the video would be re-coded again prior to burning.
(when you finally press ¡¥Burn¡¦ you should see ¡¥Convert menu¡¦ in the progress bar. If you see¡¦ Convert Title¡¦ then your video is being re-coded)
I ask again How Long is the Video?????????????????
An earlier post indicates the length to be approx 75 minutes, can you confirm this?

After you converted the video to DV-Avi did you use the settings I provided earlier to render to Mpeg??????????????????

Trevor Andrew · Post by **Trevor Andrew** » Tue Dec 30, 2008 11:38 am

SF2MJ wrote:Now all i need is a good avi to dvd converter program that won't make me lose quality.

There is a program called ¡¥Super¡¦ it is free.
A link to the program can be found here:- http://forum.corel.com/EN/viewtopic.php?t=12931
Scroll down to find ¡¥super¡¦
Although this will convert your video,(at least i think so) as afar as I know will still use the mpeg codec installed on your pc.
But I suppose its worth a go, just remember to reduce the bit rate, otherwise VS will render again in the burner module.

Devil · Post by **Devil** » Tue Dec 30, 2008 11:41 am

Quite frankly, if 25 still frames that are identical pass in front of your eyes each second, then it is inconceivable that there be a visual difference. Are you absolutely sure that the encoding is done with lower frame first? Have you checked in the advanced dialogues?

I have always used the quality slider at 90%.

There is one other possibility to improve the quality, especially with fast moving subjects and that is to shorten the GOP. The PAL default is 12 with a layout of BBIBBPBBPBBP. You could try shortening this to 6 BBIBBP or even BIBPBP. This will increase the file size for a given bitrate.

Did you try the CBR 6000 kbit/s as I suggested? This will improve the quality of the slower-moving frames.

SF2MJ · Post by **SF2MJ** » Tue Dec 30, 2008 1:10 pm

trevor andrew wrote:Hi

If you converted your project to DV-Avi and the size is 15@gb then the length is greater than 60 minutes.
How long is the video file????????????????????
If its greater than 60 minutes you would have to reduce the bitrate.
If you use the standard VS template Pal-DVD this would use 8000, this is too high, and the video would be re-coded again prior to burning.
(when you finally press ¡¥Burn¡¦ you should see ¡¥Convert menu¡¦ in the progress bar. If you see¡¦ Convert Title¡¦ then your video is being re-coded)
I ask again How Long is the Video?????????????????
An earlier post indicates the length to be approx 75 minutes, can you confirm this?

After you converted the video to DV-Avi did you use the settings I provided earlier to render to Mpeg??????????????????

The length of the video IS 75 minutes.Yes I did try your settings.And i still get a blurriness.
I even did a 2 minute home movie and tried just converting that avi file into an mpeg-2 one and there is STILL blurriness at 8000kbps.And that is a simple 2 minute home movie.

SF2MJ · Post by **SF2MJ** » Tue Dec 30, 2008 1:18 pm

Devil wrote:Quite frankly, if 25 still frames that are identical pass in front of your eyes each second, then it is inconceivable that there be a visual difference. Are you absolutely sure that the encoding is done with lower frame first? Have you checked in the advanced dialogues?

I have always used the quality slider at 90%.

There is one other possibility to improve the quality, especially with fast moving subjects and that is to shorten the GOP. The PAL default is 12 with a layout of BBIBBPBBPBBP. You could try shortening this to 6 BBIBBP or even BIBPBP. This will increase the file size for a given bitrate.

Did you try the CBR 6000 kbit/s as I suggested? This will improve the quality of the slower-moving frames.

Yes the encoding is done with lower frame first.As fofr fast moving objects.All i was filming was my family having a barbeque.I would simply pan the camera slowly around every now and then,so i could film everyone.So i don't think that should cause any blurriness.

Where is this GOP setting your talking about?

What meg-2 codecs are you guys using?

Trevor Andrew · Post by **Trevor Andrew** » Tue Dec 30, 2008 2:41 pm

SF2MJ wrote: What meg-2 codecs are you guys using?

I haven¡¦t added any extra codec¡¦s. I use the ones installed by the operating system or the software programs like Video Studio.
I think the Mpeg one is called:-
DirectShow Runtime Mpeg Video Decoder

There is a Codec Detective bit of software called Sherlock
http://www.free-codecs.com/Sherlock_The ... wnload.htm

This will read and show what codec¡¦s are installed on your pc.
As you are looking into codec¡¦s¡K.
Be careful not to install any codec packs, unless you are recommended by this forum.

Devil · Post by **Devil** » Tue Dec 30, 2008 2:46 pm

The codec I use is that supplied with most NLEs, including all the Corel ones, up to prosumer level, which is higher than VS, and it is written by MainConcept in Germany. Everyone here probably uses it. I get no "blurriness" with it. I have this on 4 different NLEs from 3 NLE suppliers. I have tried others, but there is no real improvement.

I'm not very familiar with VS X2 but you may have to put an ADVANCE instruction into an ini file to give you the fine tuning of the GOP etc. and check on the real settings. You can certainly find this out by a search on this board. When done, you will probably have an Advanced button visible in the dialogue box for encoding, if it's not already there.

OK, I ask you then to submit to YouTube a, say, 20-30 second piece of MPEG-2 which demonstrates the worst "blurriness" and the same clip in AVI. Maybe then we can see what you mean; the word "blurry" is not very descriptive and, frankly, I haven't a clue what you really mean.

skier-hughes · Post by **skier-hughes** » Tue Dec 30, 2008 2:50 pm

Isn't PAL Mpeg2 upper field first?

SF2MJ · Post by **SF2MJ** » Tue Dec 30, 2008 3:12 pm

Devil wrote:The codec I use is that supplied with most NLEs, including all the Corel ones, up to prosumer level, which is higher than VS, and it is written by MainConcept in Germany. Everyone here probably uses it. I get no "blurriness" with it. I have this on 4 different NLEs from 3 NLE suppliers. I have tried others, but there is no real improvement.

I'm not very familiar with VS X2 but you may have to put an ADVANCE instruction into an ini file to give you the fine tuning of the GOP etc. and check on the real settings. You can certainly find this out by a search on this board. When done, you will probably have an Advanced button visible in the dialogue box for encoding, if it's not already there.

OK, I ask you then to submit to YouTube a, say, 20-30 second piece of MPEG-2 which demonstrates the worst "blurriness" and the same clip in AVI. Maybe then we can see what you mean; the word "blurry" is not very descriptive and, frankly, I haven't a clue what you really mean.

By blurriness i mean when i pan the camera around slowly or somebody that i am filming decides to slowly move their arm.I get like a judder motion effect.If your familiar with lcd t.v.'s you will know what i mean.On lcd t.v.'s sometimes you will notice a judder effect when things move slowly by the screen.

skier-hughes · Post by **skier-hughes** » Tue Dec 30, 2008 3:20 pm

judder is field order problem, blurry is an encoding problem.
Use upper field first for your mpeg file.

2Dogs · Post by **2Dogs** » Tue Dec 30, 2008 3:41 pm

Can you tell us some details of your pc.

What cpu does it have?

How much RAM?

What size hard drive/drives?

How much free space on the drives?

Try playing one of the "blurry" mpeg files whilst running Windows Task Manager in the "Performance" tab and tell us what cpu usage you are seeing.