MPG file size vs images size

[Gérard de Lux]

I have recently created for the first time a video (mpg) from a pte project : everything went fine and I found the quality very good.

The show being around 4' duration, I was a bit surprised by the resulting mpg file : over 200 MB. Then I realized that all pictures of the original PTE show were quite big (1200 px wide). In order to produce a lighter mpg file, I used another version of the same show where all pictures were reduced down to 800 px wide.

To my greatest suprise, the resulting mpg file has exactly the same size as the previous one !

My question is straightforward : is it normal that a mpg file containing images 800 px wide is of the same weight as one containing the same images but at 1200 px ??? (the sizes of the original .exe files were respectively 11 and 27 MB and, of course, nothing else had been changed between the two versions)

Thank you in advance for your replies

[Ken Cox]

Gerard

this is a screenshot of a show which contains 77 frames/picts = 1280/960 80 to 100% quality -- the show contains 3 mp3's

also see

http://www.picturestoexe.com/forums/index.php?showtopic=6338

these are shots of the contents of the folder that shows are made from

this show runs 9 mins 45 secs -- 256 ram on video card -2.8 ghz pent4 processor

video is big and takes more time than people are used to when making exe"s:)

ken

[alrobin]

Gerard,

The original image size doesn't matter a whole lot since in the rendering and compression process the images are all reduced in size to 720x540 (or some similar proportion, depending on PAL/NTSC, the codec used, etc.), and then upsized to show properly on your TV screen. (Since the TV is a fixed size, you won't see any difference in quality anyway with larger originals.) Remember, we are dealing with "video" here now, not a "normal" AV sequence.

[Gérard de Lux]

Thank you, Ken and Al !

It's now clear in my mind (well, I think, I hope )

[Ken Cox]

Gerard

here is a screenshot example of the steps and times to make the dvd

dont get impatient:)

ken

[Ken Cox]

Gerard

ANOTHER EXAMPLE OF TIME REQ'D TO ENCODE -- i have an avi file -a documentary by a Canadian singer - not made by pte - 359 mb - to encode and burn with nero express 3 with a standard nero produce menu took 23 + mins

the resulting video is 1.24 gb in size

hope these facts will help you in your task

ken

[Gérard de Lux]

Thanks again, Ken !

Everything is going smoothly

In fact, I'm not doing or burning DVDs, I'm only converting my 'old' pte shows into video (mpeg) to share with people of the Mac users type and others.

It works well, particularly with rar compression which gave me recently an almost incredible 9:1 ratio ! That makes it possible to put pte shows on line in video format for people who can't read .exe files.

I'm happy

[Ken Cox]

they can play the mpeg's ok on their MAC's with no problems?

years ago i said to do that but the author of the thread never did say whether it worked or not

ken

[Gérard de Lux]

Yes, my mpg2 slideshows play well on Macs. BUT, apparently, they don't play with QuickTime or RealMediaPlayer but with VLC. Same thing for me (and other friends) under Windows : Windows Media Player doesn't work. Again, VLC is the solution; it gives a much better quality anyway and is OpenSource.

A link to VLC.

[Ken Cox]

Gerard see

http://www.picturestoexe.com/forums/index.php?showtopic=6370

without installing a bunch of stuff vlc is best bet

now

if only they would give us save as feature

ken