QVidium QVENC Encoder v17 - Manual (Page 53)

User’s Manual v.17 QVidium
®
H.264 HD Video Codecs ™
Copyright 2011-2015 QVidium
®
Technologies, Inc. Page 53 of 73
12
Known Problems
The following problems are currently known to exist:
Encoder:

Scaling from 1080i input to Half-D1 or CIF resolutions on the encoder in MPEG2
encoding is not supported.

Glitches in the SDI input (seen when SDI Error light blinks) can cause problems during
decoding unless ResyncSDI is enabled. With ResyncSDI enabled, a glitch in the SDI
input will cause a brief disruption in the stream.
Decoder:

Genlock may initially cause the output frequency to drift away from the actual
frequency until the Genlock mechanism acquires a lock on the signal, possibly causing
some video artifacts during startup. A work-around is to set the Genlock setting to
Strict or Off.
Transcoding:
1. Is no longer supported, but is available upon request.
2. For QVENC: ASI to IP & IP to ASI only with the optional ASI daughter card.
3. For QVDEC: ASI input is not supported for decoding, must use QVPRO.
4. Support for IP to IP on the QVENC upon request.