I wrote this original series of articles back in 2010, based on the TV studio I set up in 2008. Well, the march of progress or time or whatever has begun to catch up with the equipment.
The trouble with a TV studio is that everything works with everything else. I couldn’t just replace the SD cameras (and not just because they still work), but the Vision Mixer only works with the SD footage.
HD or not HD
I’m not a huge fan of HD for school studios, the quality and file size have always meant SD is perfectly fine, but time does move on. One of the Vision Mixers was starting to fail and I realised that if the camcorders did stop working, they couldn’t be replaced with a similar model. All camcorders available now are HD only.
The conclusion was unavoidable: It was time to move to HD
Deciding to switch to HD forced the decision to replace the video mixer. I knew about one option, the professional NewTek Tricaster – a product I have coveted from afar for a long time. The trouble is, last I looked, the Tricaster retails at around £6000. I put in the entire original TV studio for that amount!
That’s when I called Planet eStream, they supply Cramlington with their video streaming system and are really nice guys. I explained:
- I have a small amount of money in the budget
- I need to be able to record, stream and edit the videos before uploading
- Premiere Pro will not capture USB, so I can’t buy an SD adaptor
- I have a spare HD 3MOS camcorder
Their solution – vMix
vMix is a free and/or cheap “studio in a download”. It can take almost any type of image source from cameras and files to PowerPoints and screen captures and allow you to mix, merge, chromakey them in a bunch of different combinations.
Before we upgraded we had 4 PCs in the TV studio, now it’s a little different:
|Before upgrading||After upgrading|
Four PCs also meant 4 heat sources in a small room. It’s really surprising how much difference only have 2 has made.
In the end, we did spend a bit of money. I bought an i7 PC with a Magewell capture card. This capture card takes 2 HD inputs and passes them over to vMix. We’ve also spent $60 on vMix HD so that we have more flexibility with output images.
We’ve also been playing around with the virtual sets in vMix which adds an extra dimension and bizarrely, we’ve found we only need one physical camera to act as a two camera studio.
We have an HD camera, outputting at 1920 x 1080 pixels. We stream to whiteboard PCs around the school site, so we stream in SD to avoid bandwidth issues (actually output size is 800 x 480). This means that an HD virtual set can have multiple views which don’t have to even overlap!
So, from this single camera, I get:
- A wide, establishing shot
- A close up on the first presenter
- A close up on the second presenter
Being able to cut or zoom-in/out so we’re not always on the same shot makes the video assemblies more interesting and having a locked off camera has reduce pressures on the team. It no longer takes three of us to run an assembly. One member of staff can do the whole thing.
I’m a huge fan of vMix. It’s made filming so much easier. The chromakey is very easy to set up and you can even save your set up so you don’t have to do much more than load it in each time. It doesn’t hurt that it’s running on a top-spec PC either. At one point last term we streamed an assembly from the computer running the Planet eStream encoder, vMix and vMix’s desktop capture. I don’t think the fan even kicked in.
vMix seems to have a strong online community to who are frequently requesting changes and importantly, it seems those requests are being listened to and acted on.