Capture isn't streaming.
For capture, you do lossless in
VirtualDub.
After capture, post-capture, you encode as needed, when needed.
Many people (most?) take captures into an editor, or restore workflow (Avisynth,etc), and mess with it, make it better, turn it into their own production. After that's done, then they encode it.
Encoding depends on usage: streaming (Youtube, etc), DVD-Video, Blu-ray (BDAV), etc.
You cannot use capture files directly for streaming, for disc, etc.
So after capture, for streaming, you need to pre-encode to a high bitrate H.264 that Youtube wants. But before you do that, you must deinterlace (QTGMC).
Hybrid will help do most of that.
Make a new thread on the TBC.