How about this chip solution for HDCCTV?
It is the 4 channel HD-SDI mutiplexer chip.
It supports up to the 1080p@30Hz.
The followings are main features for this chip(SGQ-2000)
1, Input 4CH video for camera.
- BT.1120 for HD-SDI and HDMI(DVI)
- Max 1920x1080p@30Hz
- Independent video resolution for each inputs
2. Cascade input
- Increase input video channels for camera
- BT.1120 or RGB interface
3. Output 2CH video for monitor
- HDMI(DVI) and BT.1120 for HD-SDI and etc.
- Max 1920x1080p@60Hz
- Independence of input video resolution.
4. Video codec intgerface
- Output 4CH video for recording
- Input 4CH video for playback
- BT.1120
- Support the multi-channel output
5. Super low latency(typically 1 frame delay)
6. 4CH motion detector
7. Video overlay
- Support priority overlay
- Can be locate any position and any size
8. Scaler
- Free size & free ration scaler
- Support zoom and crop
9. OSG(On Screen Graphic interface)
- Overlay with input video
10. Support input and output audio
11. Color control for video enhance
12. Control interface
- Async Bus, I2C, SPI.
KM.