Compression can help you save lots of hard drive space. To change recording data rate, click Setup and then Compression tab. The quality of your recorded screen images can be affected by the amount of motion that occurs during the recording process. For high-motion content or 640x480 resolution you can select higher data rate to have better video quality.
Video Codec
NetCamCenter provides several choices of compression codecs. Please refer to codec comparison chart to select the codec.
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Note:
1. Native camera's compression is available when connecting to MPEG4 and H.264 camera. If NetCamCenter detects that the camera is not using MPEG4 or H.264 codec, NetCamCenter will not display this option. (Note: Audio is not supported for MPEG4 and H.264 Windows Media streaming.)
2. If the video is recorded with Webcam Corp NVC2, H.264 or MPEG4 codecs, to playback the video or view the live streaming video, you need to install the codec. If you select Native camera's compression as compression method, select higher data rate will not influence the file size and original data rate. It is also recommended that you select higher data rate as the camera may increase data rate suddenly. )
Advanced compression settings
Advanced compression settings only available when you select Windows Media video as video codec. To enable this function, check Enable advanced compression settings. (This feature doesn't apply to video recorded by motion )
- Key frame interval
Set the key frame interval. - Video smoothness
Enter 1 to 100 to set the video smoothness. - Video size
You can set the video size here. For example, enter 640x480 or 704x480.
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Compression data rate
You can calculate video file size by referring to the following table. The video file produced by NetCamCenter is highly optimized for streaming. Your connection speed will influence the smoothness of your video if you view the video from the Internet.
Desired recording and broadcasting frame rate
You can enter the desired frame rate for recording and viewing by Windows Media Streaming. (* Note: The following table is for reference only. The actual file size may vary depending on the video content and frame rate.)
| Compression ratio if select Windows Media encoding |
| 56 kbps (240 KB/min, 14 MB/hr, 337 MB/day) |
| 64 kbps (360 KB/min, 22 MB/hr, 506 MB/day) |
| 90 kbps (540 KB/min, 33 MB/hr, 607 MB/day) |
| 128 kbps (720 KB/min, 43 MB/hr, 1 GB/day) |
| 160 kbps (960 KB/min, 56 MB/hr, 1.35 GB/day) |
| 256 kbps (1440 KB/min, 86 MB/hr, 2 GB/day) |
| 384 kbps (2 MB/min, 129 MB/hr, 3 GB/day) |
| 512 kbps (4 MB/min, 229 MB/hr, 6 GB/day) |
| 768 kbps (6 MB/min, 337 MB/hr, 8 GB/day) |
| 1000 kbps (8 MB/min, 450 MB/hr, 11 GB/day) |
| 1500 kbps (11 MB/min, 632 MB/hr, 15 GB/day) |
| 2000 kbps (15 MB/min, 895 MB/hr, 21 GB/day) |
| 3000 kbps (22 MB/min, 1.3 GB/hr, 32 GB/day) |
| 4000 kbps (30 MB/min, 1.7 GB/hr, 41 GB/day) |
| 5000 kbps (38 MB/min, 2.1 GB/hr, 51 GB/day) |
| 6000 kbps (45 MB/min, 2.6 GB/hr, 62 GB/day) |
| 7000 kbps (51 MB/min, 3.0 GB/hr, 72 GB/day) |
| 8000 kbps (59 MB/min, 3.4 GB/hr, 82 GB/day) |
Note: Lower data rate makes the file size smaller, but lowers the video/audio quality. Higher data rate produce high quality video/audio but increases the file size.