Rendering? (beginner question)

Hi,
I am trying to learn myself AE and I tried a simple rendering. I have a canon 7D video clip, 1920x1080 23.976 fps. Filesize is 88.7MB. I don't do anything to the file, just creates a new composition. Changes output module to H.264 and start rendering. Now I get a file of about 6 MB with very bad quality.
If I use output module quicktime with pgoto-jpeg I get a filesize of 3-400MB with ok quality.
What I thought I could do is to take my videoclip, render it and get a file about the same size as the original with the same quality. Am I doing something wrong or am I missing something.
I use AE CS5.
- Terje

Hi,
Todd_Kopriva wrote:
This FAQ entry should get you started in understanding compression options and tradeoffs:
http://forums.adobe.com/thread/729526
The most important question to ask yourself is what you intend to do with the output movie. If you're going to post it online for playback, the movie needs to be highly compressed; if you're going to use it as an intermediate file for further post-production work, the output movie needs to be losslessly compressed.
The files that came off of your camera were in a somewhat compressed acquisition format. When you rendered and exported to H.264 from After Effects, you were using settings more appropriate for online distribution and playback.
First of all, my intention was to create a file equal to my source like it was not touched. Nothing more.
Thanks for the FAQ entry. As I understand it now the output from AE is more like to create a file for further processing in other applications or make a final product in Media Encoder, correct? I created a file from AE at abount 350MB and added it into media encoder. It created a h.264 file about 63MB. It seems I kept most of the quality. I will investigate for on this. You put me onto the track.
Thanks!!
- Terje

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