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Read Bill Hunt on a file type as WRAPPER http://forums.adobe.com/thread/440037?tstart=0
What is a CODEC... a Primer http://forums.adobe.com/thread/546811?tstart=0
What CODEC is INSIDE that file? http://forums.adobe.com/thread/440037?tstart=0
Report back with the codec details of your file, use the programs below
For PC http://www.headbands.com/gspot/ or http://mediainfo.sourceforge.net/en
For Mac http://mediainfo.massanti.com/
It is likely that the Bit-Rate between your original and your Exported file are not the same. There is a lower Bit-Rate in the original, than in the Export.
Bit-Rate is the main element regarding both quality and also file size. Compression is the other, but as you are using H.264 in both, then the only element of the Compression left is the Bit-Rate.
Thank you both for your replies.
John, I read through the linked articles, and although I think I understand things better, II will admit to still being confused. But I understand terminology better, I think.
I'm working to install the presets in the GoPro post - the paths on my Windows 7 installation of Adobe Premier 9 don't seem to match and I'm not able to see the presets in the program as of yet, but I'll keep trying. My computer is basically brand new and I installed Windows 7 fresh two days ago and pretty much all that is installed in the OS is anti-virus, iTunes and Adobe Premiere 9. I loaded the videos up in MediaInfo.
The original is:
MPEG-4 (JVT): 886MiB, 8m11s, 1 video stream: AVC, 1 audio stream: AAC
First video stream: English, 15.0Mbps, 1920*1080 (16:9) at 29.970 fps, AVC (Main@L4.0) (CABAC/4 ref Frames)
First audio stream: 128kbps, 48.0kHz, 2 channels, AAC (LC)
My attempt to edit and export in Premiere 9:
MPEG-4 (Quicktime): 6.34GiB, 6m24s, 1 video stream: AVC, 1 audio stream: PCM
First video stream: English, 140Mbps, 1920*1080 (2.2:1), at 29.970 fps, AVC (Main@L5.1)(2 Ref Frames)
First audio stream: 536kbps, 48.0kHz, 2 channels, PCM (Little / Signed)
Bill your comment about bitrates seems spot-on. 15Mbps in the original, 140Mbps in the exported one... I can't say that I understand bitrates very well, but I can understand them enough to see why my file sizes would be much larger.
I honestly and sincerely appreciate the help from both you. And, Bill, your posts/articles explaining codecs are excellent.
If you have any advice on anything that I can do to have the video come out better, I'd really appreciate any tips. I'll keep working to get the GoPro presets installed - so far I've put them in:
C:\Program Files (x86)\Adobe\Adobe Premiere Elements 9\sharingcenter\Presets\pc
and I'm not seeing them show up in the program... but I'll keep trying.
Think of Bit-Rates as water hoses - the larger the hose (higher the Bit-Rate), the more water (more data) can flow through in the same amount of time.
The more data, the higher the quality, though you can never recover data lost in any initial compression - that, unfortunatly, is lost forever.
Hope that helps, and good luck,