Thought that this info from the old forums might be worthy of inclusion...
old post by steve.mercer
Capital 10: Probably most content is 16:9 during peak viewing times. Picture quality is generally good and sound (usually MPEG encoded Dolby Prologic) is usually good.
Win: Most Sydney sourced stuff is 16:9 and generally good picture and sound (usually MPEG Prologic). HD rebroadcasts from Sydney are usually in postage stamp format, which is annoying. Locally produced material and studio production is 4:3 and pretty average picture quality.
Prime: Most is 4:3 with MPEG Prologic sound.
ABC: Most is now good quality 16:9 with AC (Dolby 5.1 sound) (but only tranmitting through two channels - front left/right). Also currently transmitting a comprehensive test pattern for DTV set up, an AC radio station, Fly TV and ABC Kids (the latter two are expected to cease on 30 June 2003).
SBS: Mainly 4:3, MPEG sound, but SBS commissioned productions are usually 16:9 and of excellent quality. Studio produced stuff is usually 4:3. SBS is now running a separate HD station, but this is just upconversted to 576p at the moment (eg no 'native' HD transmissions). SBS also has a world news station in 4:3 and a couple of radio stations.
but instead of posting it in the Archived thread, maybe we can update this as we notice things - so other new members who also are new to DTV (like me) can come into this [current] forum to see how much 16:9 versus 4:3 is being aired in Canberra!
Then all we have to do I guess is hassle and lobby it seems Prime, and SBS mostly but all channels to hurry up and air ALL shows in 16:9!