Please reread my rather long post from before.
I am not arguing that it cannot work. In fact, as I stated, the MPEG-4 standard was DESIGNED with some backward compatibility in mind, just as the MPEG-2 standard was DESIGNED to allow for future expansion (such as the addition of DTS audio to transport streams).
Clearly MPEG-4 audio and video CAN be encoded in an MPEG-2 transport stream. MPEG-4 features that rely on the MPEG-4 Systems functionality CANNOT be encoded into an MPEG-2 transport stream.
But your DVHS deck does not decode MPEG-4 audio or video data.
I will restate the above sentence again to make sure that you read it properly.
Your DVHS deck does not decode MPEG-4 audio or video data.
Now it could store / ignore the data. For example, play a DTS DTheater tape in an old DVHS deck. You won't get a DTS audio stream out of the deck - it does not know how to deal with the DTS data in the transport stream.
I did NOT say that Voom was using MPEG-4. Please read my previous posts carefully. I DID say that they were "supposed
to be using MPEG-4 audio and video encoding."
Where did I get this idea from? Why from the Voom press release on the subject! You can read it at:
"Mr. Dolan explained that all the programming transmitted by both Rainbow 1 and Rainbow 2 will utilize a new encoding system from Harmonic, initially configured to run in MPEG-2 and software upgradeable to MPEG-4.
"Today's announcement is a step forward in our plans to advance VOOM to MPEG-4 later in 2005. All VOOM customers have been provided with set-top boxes capable of receiving the MPEG-4 signal and we remain committed to offering more than 400 full continental US channels before the end of 2005," continued Mr. Dolan. "
I don't know if Voom made the transition to MPEG-4 but if they did then you can certainly try to get access to it and then record it using your DVHS deck.
Now you wrote, "you're arguing that it can't work when people who createit seem to indicate it can."
Can you please elaborate on that? Who are these "people"? What is the source of the MPEG-4 stream? Was it just the audio and video that was recorded? How was the stream accessed? How was it output? As an MPEG-2 transport stream over firewire into a DVHS deck? Could the DVHS deck play any of the MPEG-4 data?
Now I CAN tell you a way of testing the playback of MPEG-4 audio and video from a DVHS deck but I think this discussion is getting way off topic. If you have read what I wrote before then you already know how to do the test.
Good luck to you in your efforts.