File size question

[abadfish]

If I have a 450 MB MPG and put it on a DVD using some authoring program, should I expect it to take up 450 MB of space on the DVD itself?? The reason I ask is because I try this and the MPG takes up 2 GB of space rather than 450 MB. Is this normal??

[Vejita-sama]

File is of your encoded MPEG is ONLY dependant on two factors:

runtime & bitrate

the size of the source, resolution of the source, resolution of the encoded MPEG, codec used for the source, etc. has ZERO effect on file size.

If you set the bitrate at 1150kbit/s (eg. VCD whitebook) and your source is 30min long (ie. 1800secs) just multiple bitrate x runtime = file size.

To make life easier you can use a bitrate calculator (look to the left under tools, the DVDRHELP.COM java one is good enough).

[FOO]

No that's not normal IF your mpeg is already DVD compliant.
What authoring program ?
Is it taking hours to process ?
If it is it may be re-encoding at a higher bitrate than your original.

[abadfish]

No that's not normal IF your mpeg is already DVD compliant.
What authoring program ?
Is it taking hours to process ?
If it is it may be re-encoding at a higher bitrate than your original.

I'm using Roxio DVD Builder to author my DVD's. My bitrate is already at 3000k. Is that not high enough??

[FOO]

What has that to do with your problem where the files are
getting larger ?
IS the video being re-encoded ?
If it takes more than 10 minutes, it is