My rendered file as lost a few GB

JUSTIN-JOHNS wrote on 11/6/2019, 12:54 PM

Hello, When i import a 1080P XAVC S file to sony vegas I check file properties and it says its 4GB for 11 minute file. data rate is 50014kbs which i understand means 50 mega bytes a second. When I render the file in vegas I use a custom template for project properties 1920 by 1080 field order progressive scan pixel aspect square frame rate double pal deinterlace none. I then render as 1920 1080 50P. I check custom settings the bit rate setting is set to its highest 25,999,360. When i render the file the size of it is 1.67GB. data rate as now dropped to 21374. I seem to have lost a lot of data from the original file. Is this normal or do I need a newer version of vegas to render it at 50 mega bytes a second and keep the original quality or could you please explain why i cannot render at 50 mega bytes a second. Its gone from 4GB to 1.67GB. I have sony vegas platinum 11.

Comments

j-v wrote on 11/6/2019, 1:39 PM

I think you used in VMS 11 the old Sony AVC codec with a low max. bitrate compared to these days when it is possible to play higher bitrates and havier files.
With the new VMS Pl 16, to which you can upgrade, much higher is possible f.i. with the new comparable Magix codec with a lot of possibilities .Look here

Last changed by j-v on 11/6/2019, 2:11 PM, changed a total of 1 times.

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JUSTIN-JOHNS wrote on 11/6/2019, 4:02 PM

ok thanks very much for that information.

Musicvid wrote on 11/6/2019, 5:08 PM

No. Your original file is 50 megabits per second. There are 8 megabits ​​​ in a MegaByte. So you cut in half.

Now, twice you have compared file sizes using different encoders, didn't even tell us what the second one is. Please don't do that. Them be apples, these be oranges.

Every encoder on the planet has a different Comression Ratio. One makes larger files, one makes smaller files. You will be surprised to learn that it is not a direct factor in determining playback quality. If you like it, its the right size.

JUSTIN-JOHNS wrote on 11/6/2019, 5:48 PM

ok thanks its just i thought if a file as more GBs it must be better picture quality but you say its not necessarily so. I learn something every day. Thanks

Musicvid wrote on 11/6/2019, 9:19 PM

Dumb camera encoders throw bits everywhere, where they're not needed.

Smart delivery encoders place bits where they're needed to maintain quality.