Premiere Pro always recompresses on render

[zambelli]

I'm editing a project in Premiere Pro (v7.0) using HuffYUV and custom settings. Every time I hit Enter to render my workspace, Premiere renders the *entire* thing, not just parts of the timeline affected by transitions and effects. I've verified this by going into the Preview Files folder and playing back the content in there; I found that Premiere was recompressing parts of the timeline that had no changes made to them and shouldn't have been recompressed.
I can't seem to find a way to disable the "Recompress always" option. In fact, the only place I see it is in the Export Movie menu. Am I missing it for the main project settings?

Some background info: the clips that I'm using were shot on an NTSC DV cam in widescreen (16:9) mode, pre-processed (deinterlaced and such) and saved with HuffYUV to prevent loss of quality.

My project settings are as follows (only important settings listed):

Editing mode: VfW
Timebase: 29.97 fps

Frame size: 720h 480v (1.200)
Frame rate: 29.97 fps
PAR: D1/DV NTSC Widescreen 16:9 (1.2)
Fields: No fields (progressive)
Scale clips to project dimenions: unchecked

Video codec: Huffyuv v2.1.1
Color depth: Millions of colors


All imported video clips were set to conform (Interpret Footage option) to D1/DV NTSC Widescreen (1.2) PAR. Could that be causing the problem? That would be a bug though, since the PAR is the same across the entire project, so Premiere should understand that nothing is being changed.

[zambelli]

Originally posted by A380

Why are you compressing DV to HuffYUV before loading it into Premiere Pro anyway?

As I said in the OP, I needed to do some preprocessing, mostly with AviSynth. In order to avoid quality loss of encoding to DV again, I chose a lossless codec instead.
Originally posted by A380

If you load the DV instead of a recompressed version you get even more quality, and save the time for the first recompress.

A recompressed HuffYUV version of a DV source shouldn't be any different than the source, since all the luma and chroma information has been saved (and HFYU is lossless).
Originally posted by A380

If you are going to put this file onto DVD you can also leave it interlaced, you don't have to deinterlace it first, don't quite understand why you did that....:confused:

I never said I was putting it onto a DVD, did? :) The reason I'm deinterlacing is because later on I plan to combine it with some progressive footage from a JVC HD cam (480p material).

Thanks for the reply though. I think I might know what the problem is. Although it allegedly handles YUV space, Premiere still seems to decode HuffYUV to RGB32 for internal processing because when I export anything from Premiere into HuffYUV, I get a HuffYUV RGB video and not a HuffYUV YUY2 video. This leads me to believe that all the preview files are also being rendered in HuffYUV RGB. My guess is that Premiere treats these two instances of the same codec as two different codecs (which makes sense, right? you couldn't join HFYU YUY2 and HFYU RGB video into a single file, right?) and thus ends up recompressing everything in order to convert it into the same HFYU RGB codec.

[zambelli]

Originally posted by A380
Can't you do that in Premiere using the DV Stream?

Not until someone makes Premiere versions of DGBob, KernelDeint, and all those other nice Avisynth tools. :)
Originally posted by A380
With combine do you mean you're combining both onto one DVD, or will the video (or both videos) never get to know a DVD ;). Cause you can mix interlaced an progressive streams on a DVD.....

I will eventually combine the videos into a single video, but the final format might not necessarily be DVD.