As mentioned here, an older version of the C920 had a different ID (046d:082d, which is the one typically listed for GNU/Linux support) and had H.264 support:
Recent versions, including mine, stream MJPEG and do _not_ support H.264. Just an FYI.
@patrick You may have meant this already, but I want to clarify for others, since the name "MJPEG" could cause people to interpret your statement in two different ways.
The name is confusing. MJPEG refers to "Motion JPEG", not MPEG:
H.264 is vastly superior from a technical perspective, but patent-encumbered, licensed by MPEG LA:
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