Encoding Requirements and Recommendations
Encoding Recommendations
1.Resolution: 720 X 480 or 704 X 480 in NTSC; 704 X 576 in PAL.
2.Closed GOP (Group of Pictures) with an
3.The recommended audio bit rate is 384kbps and a sampling rate of 48khz. It is recommended to play back test files using the original source tapes to confirm audio levels prior to encoding an entire project. This will allow for calibration of the encoding system to obtain a standard audio level.
4.Program stream files should have one end code (00 00 01 b9) at the very end of the file. The Firefly can handle files without end codes, but it is still a good idea to include one.
5.The bit rate can affect the size and transferability of the files. The recommended bit rates for various types of video content are as follows:
Bit Rate | Video Content |
|
|
4 mbps | Good quality with low motion |
|
|
6 mbps | Good quality with typical motion |
|
|
8 mbps | Good quality with high motion |
|
|
10 mbps | High quality with demanding content |
|
|
Table 1. Bit Rate Encoding Recommendations for Firefly
6.Although Firefly can transcode NTSC and PAL, it is recommended to encode to the video standard (NTSC or PAL) that you will be setting your Firefly to display.
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