Wrong Size Reported When Burning To DVD

[Dijenga]

Not sure if this has been discussed here before (I used search, but perhaps I didn't word correctly ... if so, my apologies) but I am having a problem with the program reporting the size of a movie incorrectly while preparing to burn to disc.

Latest instance I've had was burning a video that Corel VS X10 Ultimate reported as being over 5 GB ... in actuality the completed video with menus is less than three GB when burned to disc (2.8 GB actually).

Any idea what causes this? Had the same problem in x5 and x8 ...



Actual size on disc was 2.8 GB, not 5.06 GB as reported by the program.

[lata]

Hi

It would depend on the video and audio data rate of your movie file..
I notice your video is 70 minutes long

A dvd will hold 4.3 Gb of data.
A 60 minute video file using 8000kbps will be approx. 4 Gb
However if using Digital Dolby Audio should get 70 minutes to disc

Is the loyalty_all clip a Mpeg2 video file or a vsp project file.
Click the “I” info button, what are the properties of that file?

[Dijenga]

Here is the info ... it is a VSP file with several clips, all MP4 files.



When burned to DVD, is less than 3 GB.

Created an ISO, 2.8 GB.

I regularly get 1 hour plus burns, but they are all about 2.5 - 3 GB in size, never the 5-6 GB reported by the program.

[lata]

Hi

Your Video is 1hr 9 min 23 sec,
The program shows the size as 4.8 ( 4.7) not 5-6 GB
It is just oversized, you need to get that slider in the Green.

Change the settings to :-

MPEG files
24 bits, 720 x 480, 29.97 fps
Upper Field First
(DVD-NTSC), 4:3
Video data rate: Variable (Max. 7500 kbps)
Audio data rate: 256 kbps
Dolby Digital Audio, 48 KHz, 2/0(L,R)

You may be able to use 8000kbps as changing the Audio to Digital Dolby will help.

How…
You can do this by selecting the Cogwheel, ( Project Settings) lower left.
Select Change Mpeg settings
Customise
Compression tab – to change Audio to Digital Dolby and Video Data rate to 7500kbps

Ok

You are burning a disc from your project, but you may be best to first render / convert your project to a Mpeg2 video file using Share DVD options. You can modify the settings using the above. That will create a Mpeg2 video under 4.3 Gb .
Then start a new project
Share Disc – DVD
Adding your video here, the new video (mpeg2)

[skier-hughes]

How are you burning the disc that you report the size on?
Using VS?
Using another app?
What is that app?
What settings did you choose?

[Dijenga]

Thanks for your help, but I think that I've been misunderstood ...

Lata, if you look on the left end of the green bar, the size is reported as 4.71 GB. When the DVD is burned, the size is considerably smaller.

What I'm trying to discern is WHY the program reports the estimated usage as so much LARGER than it actually is. In this particular case, the DVD is actually LESS THAN 3 GB when burned ... there is absolutely NO OVERBURN (not sure of the correct expression) involved. You can visibly see on the disc that the area burned to is less than 75 % of the disc. File manager backs up that visual cue showing the volume to be only 2.8 GB.

For this project the settings are:

Code: Select all

MPEG files
24 bits, 720 x 480, 29.97 fps
Upper Field First
(DVD-NTSC),  4:3
Video data rate: Variable (Max.  8000 kbps) 
LPCM Audio, 48000 Hz, Stereo

Display aspect ratio is 4:3
Field type is Upper field first

I have the following items checked:

Code: Select all

Do not convert compliant MPEG files
Treat MPEG audio as non-DVD compliant
Autorepeat when disc playback ends

On OTHER PROJECTS, the program has reported size as being 5 - 6 GB (Not the project shown here) and yet burned on a single DVD with no overburn. Again, unused space is visible on the disc.

It would just be advantageous to this old guy if the program ACCURATELY (within 10% even) reported the estimated size of the project when burned to disc. As it is now, some of my projects are as much as 40% smaller than the program shows them to be.

@skier-hughes, I've burned with VS. I've created ISO and burned with Nero (sometimes I make several copies of the same compilation). Size of the burned disc is almost identical either way.

[lata]

Hi

It is a little difficult to compare other programs with Video Studio in the way you are burning the DVD.

Using Video Studio you are burning a project file, a VSP file.
Convert Compliant Mpeg is ignored, the project will be converted.
The file will be rendered / converted to a mpeg2 video file immediately after pressing Burn, the resultant video will be saved to a temp folder, then used to burn the disc. All DVD need Mpeg2 video file to burn the disc. As you are burning a VSP that is not a compliant video file and Do Not

Your image shows a sample just a little oversized, and if you change the Audio from LPCM to Digital Dolby will reduce the size showing on the left below 4.3 Gb, the bar will show all Green.
Using a menu also affects the size on disc, defaults to Smart Scene which uses the most, Thumbnails and Text menu use less.

The program will render the VSP using the Project Settings under the cogwheel, we can Customise these settings via the Change mpeg Settings option.

Video data rate + Digital Dolby
As a Guide
At 8000kbps will allow for 75 minutes, (top quality DVD) that’s pushing the disc capacity to the limit. I would use 70min as a max.
At 6000kbps will allow for 90 minutes of footage ( Good Quality DVD)
And 4000kbps will allow for 120 minutes ( VHS quality)

It is possible that the program errs on caution when setting the limits, so yes it may indicate the size as 4.3Gb and only use 4 Gb
I would prefer that than loosing footage by underestimating the sizes.
( I’ll run a quick test to burn an ISO to compare sizes)


If you use another program then you are using a video file not a VSP project file. That file should be Mpeg2. Now most if not all programs will recode that file before burning the disc, similar to the above process, although would choose the settings for you.

We can do the same using video studio by first creating a video file
Open your project in the timeline and choose Share – DVD
Choose a suitable template will render your project to a Mpeg2 video file, and if you have the template settings correct will create a video file at 4 Gb, (for a 70 minute video) I would leave the 0.3 Gb for menu creation. That should fill the disc.

You are recommended to convert / render your project to make that Mpeg2 file.
Play the new video to check quality
Open a new project
Share Create Disc – adding the new video at this point.
Choose to burn an ISO
Play that iso using VLC Media Player to check quality
Burn the iso to disc using Tools – Burn from disc image iso.

Because you are now using a dvd compliant video file there will be no further conversion during the burning process. Unlike burning a VSP.

When you do create that Mpeg2 you will be more accurate in comparing the burn sizes as the Mpeg2 does not change.

[lata]

Hi

Ok I ran a test to burn an Iso these are the sizes I created.
For me they seem close

X10 burner panel

details from Iso folder

Iso File details

From the first image I did deselect create Menu, just to speed up the test, selecting would increase the sizes, putting the green bar into yellow, just over sized.
Burning this iso to disc will use approx. 4.1 Gb + to the disc

[canuck]

Here is the info ... it is a VSP file with several clips, all MP4 files.



When burned to DVD, is less than 3 GB.

Created an ISO, 2.8 GB.

I regularly get 1 hour plus burns, but they are all about 2.5 - 3 GB in size, never the 5-6 GB reported by the program.

Your project is shown as 5.06 GB required which is larger then the DVD. When proceeding to burn, you are told that the project is too large to fit on the DVD and you are given the option to use "Fit-to-disc". This option seems to select a bit rate which will reduce the size. Did you perhaps select this option? The Fit-to-disc option is very inaccurate when selecting the bitrate to use when making the fit.

[Dijenga]

Yes, I get the notice that the disc is not big enough for what I'm burning. Nope, I don't tell it to "fit to disc".

The disc plays correctly, but the size on the disc is much smaller than the 4.71 GB. I get the same with AVCHD.

It would just be so much easier to build a program if the size on disc were correct or even close. 2.8 GB is hardly 4.71 GB.

If you're thinking I can't burn my vids, you are mistaken. Sometimes I need to make programs that last longer, but I can't judge the size because the bar shows the wrong size!

[canuck]

Yes, I get the notice that the disc is not big enough for what I'm burning. Nope, I don't tell it to "fit to disc".

The disc plays correctly, but the size on the disc is much smaller than the 4.71 GB. I get the same with AVCHD.

It would just be so much easier to build a program if the size on disc were correct or even close. 2.8 GB is hardly 4.71 GB.

If you're thinking I can't burn my vids, you are mistaken. Sometimes I need to make programs that last longer, but I can't judge the size because the bar shows the wrong size!

The bar shows the correct size - it's in the burn process that the size is changed.

So what option do you select? If you don't select "Fit-to-Disc" you can't proceed to burn since the 2nd option forces you to make changes so that it will fit.

Can you post the properties (especially bitrate) of one of the VOB files on the "shortened" DVD? Perhaps even take a screenshot of the DVD Video_TS folder and post it?

[Ken Berry]

We can do the same using video studio by first creating a video file
Open your project in the timeline and choose Share – DVD
Choose a suitable template will render your project to a Mpeg2 video file, and if you have the template settings correct will create a video file at 4 Gb, (for a 70 minute video) I would leave the 0.3 Gb for menu creation. That should fill the disc.

If you follow Trevor/lata's advice and first convert your project to DVD-compatible mpeg-2 and use that to burn the disc, you will know from the start exactly how big the files on the DVD will be. And it really doesn't take much more time to adopt this workflow. The time for converting your mp4 or AVCHD to mpeg-2 will be exactly the same whether it is done before you even open the burning module, or whether conversion occurs as part of the burning process.

[lata]

Hi

Video Studio will burn a disc to the correct size, any size of our choice.
Just repeating myself here.........

If you select the Project Settings cogwheel you can change the render settings by adjusting the Customise panel.
Changing the audio to Digital Dolby and tweaking the data rate, default to 8000kbps will adjust the settings on the timeline, the green bar.
Re-adjust the settings till the size on the green bar shows below 4.3 / 4.7

That will burn a disc using those sizes.

Leaving any program to automatically choose a setting will err on caution reducing the settings accordingly.

View my test results here
http://forum.corel.com/EN/viewtopic.php ... 02#p341998