- Posts: 20
- Joined: Thu Aug 15, 2019 8:21 am
- Real Name: David Jones
Yes, I believe this should be possible. You would need the HDMI to SDI 6G converters to be able to transmit up to 2160p30 video.
Note that SDI video signals are almost always at least 10-bit. This dates back to the standard definition versions of the SDI specifications which specified a 10-bit data stream.
Now, of course it is possible to send an 8-bit video signal down a 10-bit SDI link, but generally speaking, SDI hardware can handle at least 10-bit video signals (most commonly with 4:2:2 sub-sampling). There are some 12-bit 4:4:4 SDI signal formats as well, but these tend to be less widely used and supported than 10-bit 4:2:2.
This is different from the HDMI specifications where 8-bit video signals were the minimum supported format and 10-bit or higher is known as Deep Color, with support for Deep Color varying by hardware.
In terms of the maximum length of an HDMI cable run, it's impossible to give a definitive answer as it depends on the type of HDMI cable used, the signal format, and the sending and receiving hardware. With a traditional passive, copper HDMI cable, the longer the cable distance, the greater the likelihood that you will run into problems. 10 meters is often possible with lower-spec signals, but it really depends on the cable and equipment.
The best bet with longer cable runs over HDMI is generally to use HDMI active optical fiber cables. These can get kind of expensive, but by converting the electrical signals to fiber optic signals for transmission, they eliminate a lot of the cable length limitations of standard passive copper HDMI cables.
Or just convert to SDI for the longer runs.