Viz Vectar User Guide

Version 1.0 | Published May 07, 2020 ©

Production and Capture Considerations

If you’re not intent on live streaming, but wish to capture a live switching session, you would likely record at full resolution using the Record button (rather than Stream). The high quality captured files can then be used later in a DDR, or perhaps be transferred to another computer (even on a different platform) for external processing or editing.

Tip: Use an external hard drive to transfer the files between systems, or transfer them across a local network.

You can always convert these files to a streaming file format if you later decide you’d like to supply them for on demand Internet viewing. This lets you retain best quality right through to final output. When you eventually encode for streaming, you can choose settings that best suit the intended audience and streaming environment. At the very least, if (perhaps to save conversion time) you capture video for web distribution, it’s best to capture it at least at the size that you intend for final output. This helps ensure satisfactory video quality for your viewers. When video is compressed (as it invariably is for web viewing) you can lose important detail; compressing a full-screen video down to a quarter or a sixteenth of its size is a lesson in humility!

Other Factors

Other variables to keep in mind when you’re creating video for the web are contrast and motion. During video encoding for web distribution, a fair amount of video information and detail can be lost. For this reason, good lighting of your source video is essential.

Also, web streaming doesn’t handle detail, transitions and motion all that well: So your best shots should be close up, and without a lot of movement. Too, audio from cameras and camcorders is rarely as good as that from external microphones. You should at least use a clip-on lavaliere microphone, if not a directional or shotgun microphone to be sure you record only the audio you really want. Finally, for high quality streaming, consider using a 720p session, even when your cameras may be SD and interlaced (there is no particular benefit to working in SD when your goal is a smaller streaming output.