Can Vegas edit High Definition files recorded from air?

Videot wrote on 4/8/2004, 11:14 PM
i am aware that Vegas is capable of editing some HI definition video. I also know that here in OZ that it's possible to purchase a High Definition TV tuner for your PC where you can record off air directly onto your hard drive. Would these recorded signals still be in MPEG2? In any evert is Vegas capable of also editing this sort of files?

Comments

RBartlett wrote on 4/8/2004, 11:50 PM
It could almost certainly edit the video part of the a/v stream file. Select all_files in the Vegas explorer. If the sound is AC3, then it'll be silent without further processing before going to Vegas4.

Check you can get a release to use the programming or use just the promotional trailers, assuming they themselves are already released.

If you simply wish to edit out adverts, for timeshifting (!?), then Vegas maybe overkill. WombleVCR or VirtualDub might be more appropriate to not take a recompression hit (if staying with MPEG-2).

HiDef broadcasting maynot be MPEG-2 forever. However it is the main delivery format for the time being.

Vegas4 can bring in transport streams and even render them back out, if you find that appropriate. Or it can help you make WMV9 HD-DVD on red laser DVDRs.

I've trial edited HDV 720p-30 sample .trp files I've downloaded from the web. These are almost the same as the delivery formats for satellite MPEG-2 HD.
farss wrote on 4/9/2004, 4:01 AM
Before putting a patch over one eye and a parrot on the shoulder I don't think it's quite that simple. I think you'll find the HiDef DVB although high bitrate mpeg-2 it is encrypted. The tuner cards and STB tuners can be recorded from but only as a bitstream, not a decoded mpeg-2 stream.
That's how JVC got the DVHS VCRs past Hollywood, it can record off air for time shifting but you need the decoder built into the TV to view it. Of course firstly you could take the HiDef RGB feed from one of these boxes and record that and I'm sure there's already software out there to decode the recorded data.
Quite what you're going to do with afterwards I don't quite know, HiDef mpeg-2 is I think at around 50Mbits/sec so you're going to chew up disk space pretty quickly.
Of course I could be quite wrong here, in which case it'd explain why there's a shortage of HiDef content, well that and a shortage of HiDef telecines.
JJKizak wrote on 4/9/2004, 6:07 AM
I have one of the cards available for recording the HDTV to the hardrive as a tp file in a 16meg or 24meg mpeg2 stream. When played back through the card the quality is outstanding. The file can be changed from tp to mpg and installed on the timeline but there will be no sound. Viewing is very jerky. You can however install a HD-WMV file
or at least 2000 x 2000 pictures on the Vegas timeline and render and edit them (need real fast machine) with the following settings:
720 x 30p, 15 meg CBR, 384 audio, system set to stream and the auto-calculate unchecked and set to 19.4megs bitrate. Change the file ending from mpg to tp and with the new Beta3 files from the MY-HD120
card it will play stupendous on your HDTV set. You can instead change the file ending (or also) to m2t and with the Cineform "Connect HD" software export it to D-VHS tape or convert the whole thing to AVI and put it back on the timeline for further editing. Been there, done that and the quality is mind boggling. Rember that all of the networks are broadcasting their HD programs in the 19.4 meg data stream although their quality is scads better than what you have in the available consumer cameras (JVC). I have not tried converting the original tp files created by the MY-HD 120 card created with the Beta3 software but using Cineform it will not convert to AVI with the present software.

JJK
B_JM wrote on 4/9/2004, 9:14 AM
there is a simple to use conversion utility for any ts encrypted streams -- as well as dvhs convertors, dvhs capture and program stream conversions ..

in fact they all work very well with vegas and are used a lot in asia (the utilities)
..

ac3 must be converted to wav files still of course ...