Why does it Transcode compliant asset?

Why does Encore 2, at the burn stage, transcode mpeg compliant files?
I've ripped files from a DVD of a normal TV programme that I burnt on my Sony RDR-GX210 DVD recorder using Ulead DVD MovieFactory 5 (great program for this - pity Encore's not able to do it, or can it?), and they're always transcoded at the burn stage.
When I import them, Encore says, 'Don't Transcode' under the Transcode Status column, as it does with compliant mpeg files I've created with Canopus ProCoder. However, unlike the Canopus encoded files, the ripped files get transcoded. Why?
The transcoding not only takes ages, but it also results in really poor quality.
If I use Ulead DVD Workshop 2 and import the same files, it burns a DVD quickly and without transcoding. Can anyone explain that?
Can you help?
Regards
John

Read this message in the Encoding Sub-Forum section
http://www.adobeforums.com/cgi-bin/webx/.3bc22ae4/0

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Why Does Encore 2.0 Transcode Twice?

Hi!
I prefer to transcode my assets (DV-avi's) prior to burning and have noticed several times that even if the status of all assets says Transcoded, Encore 2.0 sometimes transcode one or more items once again when i burn the DVD eventhoug they already have been transcoded. I dont remember this behaviour when i was using Encore 1.5.
A couple a minutes ago i had five motion menues transcoded prior to burning the disc, and when i pressed Build to build the DVD Encore 2.0 did transcode one of them once again.
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/Roger
Premiere Pro User Group Sweden -
www.pproug.se

I'm building an SD DVD from a 90 minute HD quicktime output from FCP in DVCPro HD at 23.976 fps. I have a new Intel 8 core Mac with 8 Gb of RAM and 2 TB of internal drive space running CS3 production premium. The quality setting I used was a 2 Pass vbr 1.5 lowest, 4.9 average and 7.8 max data rate at 23.976 fps. The audio was stereo PCM at 48khz. The transcode step of the build ran for 5 hours and then the lower progress bar reset to the beginning and started over again! I let it run for another half hour to see if it was going faster than the first time but it wasn't so I stopped it and used a lower quality file from Compressor instead. What happened? Was it going to take 11 hours to encode a 90 minute film?

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As I understand it, encoding fomats your digital video clips and photos (assets) into Standard DVD mp2 format so that it can be burned to a DVD. If there has been an error in the encoding process, then you remove the old encoded assets and start over. There are numberous reasons why there can be errors in the encoding process.

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lbecerril wrote:
And yes like demon_hunter83 said, I do want to get the best possible quality (regardless of encoding/transcoding time), but I'm asking this question because I want to build my projects in a blu-ray format, and because my (slow) computer just took 53+ hours to transcode 1 hour 12 minutes and 58 seconds of HD footage to a DVD ISO built, I have no complains about the DVD quality I got, but I basically want to avoid transcoding at all possible, for those 2 reasons, first the time it takes to transcode and second to avoid any quality loss (if any), but when I hear people say that I have to transcode the files but at the same time the provided help says that it can be avoided by using blu-ray disc compliant assets I have to stop and ask someone who has been there or that has much more experience than me. Thanks again.
what that means is, if you bring in a mp4 or whatever file recorded on your camera, take it off of your camera memory, and dump it straight to Encore, completely vanilla, it HAS to trasncode it to a DISC proprietary format (be it DVD or Blu-ray) for it to work on a set-top player. if you take that SAME mp4 file, import it into premiere pro, and edit it (or dont. your choice), then export the video out to 'mpeg dvd/Blu-ray,' or 'h264 bluray,' THAT file will import into encore without needing to be trasncoded (because premiere already did that for us). so thats why it says "that it can be avoided by using blu-ray disc compliant assets" because they are importing a DISC proprietary asset that has already been trasncoded in premiere/avid/final cut/vegas/etc first.
as far as it taking forever and a day to trasncode, that is just the nature of working with HD if your system is not optimal. what are your specs for your system?
i prefer to do all encoding in premiere, while others (hunt, and such) prefer to drag in AVI assetts to encore and let it go, but with encore not having true background processing, i basically have to allocate a huge chunk of time to do that. so i would much rather set all assetts how i want them, and set up a queue for AME and while assetts are transcoding in AME, i can work on making menus and crap in Encore/PS and that is my preferred workflow. i set the assetts to trasncode to disc compliant formats, so all i have to do is drop it in encore, set my menu links to the assetts, and build disc.
but you can NOT get around having to transcode your camera footage. EVERY single one of us who uses any kind of format other than film, has to recompress an already compressed format to get it to disc. atleast with film you can work with notive lossless form source, somewhat. but such is working with digital captureing formats
the only way to avoid trasncoding to a blu-ray/dvd spec file is to burn an AVCHD disc, but those are NOT blu-ray spec, so it depends on the players and alot of factores whether or not they would even play. and encore does not even burn those types, so you would have to find other software that does that. but thats the only way i can think of... but again... it would have to be purely vanilla files from the camera, because if you did any editing in premiere, you have to transcode all that info to one final file... preferably a disc proprietary format

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