The 1080 x 1920 ( 1080I ) interlace format specified in the ATSC standard CANNOT be compressed to fit in a 6MHz channel without creating objectionable artifacts .
CANNOT has been recommended that the 1920 pixels be sub-sampled to 1440 to reduce compression artifacts .
The 1080 x 1920 ( 1080I ) interlace format specified in the ATSC standard CANNOT be compressed to fit in a 6MHz channel without creating objectionable artifacts and it has been recommended that the 1920 pixels be sub-sampled to 1440 to reduce compression artifacts .