I have a Shaw PVR Model DCT 6412 III. It only receives the audio from channels 266 & 267, no picture. What's up with that?
Those channels, the video is MPEG4 the DCT series doesn't understand MPEG4.
Basically, and unfortunately, those terminals are too old.
Kevinds is correct about the older generation boxes not being compatible with MPEG4, this document will offer further details if you are interested: Guide to MPEG4 Channels and Digital Cable Boxes.
Let me know if you have any further questions.
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