Why do the non-HD channels on the HDPVR have such a reduced picture size?
Non-HD shows were generally recorded in the 4:3 format and you probably have a wide-screen TV capable of 16:9 format. The box is outputting the correct format that the show was recorded in. You may find more information here to adjust the picture size: https://community.shaw.ca/docs/DOC-1021
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