研究了MPEG的bitrate问题 (如何使用Adobe Premiere Pro 导出质量高，文件小的视频）

使用Adobe Premiere Pro 导出我的SONY Video Camera:
Export to AVI:
1. File -> Export -> Movie
2. Click settings:
====
The General Section:
*File Type: Microsoft AVI
====
The Video Section:
* Compressor: ffdshow Video Codec
-- Click Configure and Choose Encoder: XviD. Bitrate: 2200, Mode: one pass - constant bitrate (Don't try to use two pass, will create a very large output)
-- Click output on the left hand side, Pixel aspect ratio: 1:1; Display aspect ratio: 16:9
* Change Frame Size: 852 x 480; Pixel Aspect Ratio: Square Pixels (1.0)
* Uncheck Recompress
====
The Keyframe and Rendering Section:
* Check Deinterlace Video Footage
====The Audio Section:
*Compressor: Microsoft ADPCM
*Sample Rate: 22050Hz



Export to MPG (not recommended because the output will be large)
1. File -> Export -> Adobe Media Encoder
Check Deinterlace.
Format: MPEG2
PreSet: NTSC-MPEG 2 Generic
Choose pixel ratio: 16:9
Field Order: Progressive
Use default min max and avg bitrates if to burn a DVD
or
min: 1.44; max 2.40; avg: 2.376 if you want smaller size if create for PC


Notice the Estimated File Size at the bottom (250 KB/s ~ 300 KB/s are normal values; Don't make it more than 300). Export to a .mpg file.
Note: 1KB/s = 8Kbit/s