Picture quality evaluation
Although the VC-300HD is capable of diverse format conversions, the video quality is not compromised. Examine these frequently used resolutions in same-sized format conversion,
down conversion and up conversion. These samples were converted via two-way connection between i.LINK (HDV/DV) and HD-SDI.
Original input video (HDCAM format). After conversion, each of the video samples have been cropped to remove the surrounding margin.
■HD/SD-SDI to i.LINK (HDV/DV) conversion
① | | | ① | | ② | |
Input | HD-SDI 1080/59.94i | | | | | | | |
Process | Format conversion | | | | | | | |
Output | 1080/59.94i | | | | | | | |
| | | | | | | | |
② | | | | | | | | |
Input | HD-SDI 720/59.94p | | | | | | | |
Process | Format conversion | | | | | | | |
| | Image after format conversion | | | |
| | | | Image after format conversion |
Output | 1080/59.94i | | | | | |
| | | | | | |
| | | | | | | | |
③ | | | ③ | | | ④ | | |
| | | | | |
Input | HD-SDI 1080/59.94i | | | | | |
| | | | | | |
Process | Down conversion | | | | | | | |
Output | 480/59.94i | | | | | | | |
| | | | | | | | |
④ | | | | | | | | |
Input | SD-SDI 480/59.94i | | | | | | | |
Process | Up conversion | | | | | | | |
| | | | | | | | |
| | | | | | | | |
Output | 1080/59.94i | | | | Image after down conversion | | | Image after up conversion |
HD-SDI video input was output via i.LINK. After the i.LINK output was captured in a non-linear system, the video samples were output as HD-SDI from a board installed in the non-linear system. In the conversion from HD-SDI to HDV, internal base-band input is encoded in real-time to MPEG2. This provides real-time encoder performance test results. When the 1080/59.94i output is selected, the cross conversion resolution is actually output at 1440 (horizontal) pixels.
