UpShift question

tcbetka wrote on 10/12/2008, 8:36 AM

I installed UpShift today and was transcoding some AVCHD (m2ts) files into HDV (m2t) files, but am having an issue. I hope someone can point me in the right direction here...

The default for the application is 60Mbps, essentially an upcode from the 17Mbps AVCHD files from my Sony SR11, the way I understand it. But I tried this setting anyway, just to see how things would go. Well it took a while, but I did get am m2t file from the transcoding procedure--but Vegas simply hangs when I tried to load that file. So I repeated the procedure at 15Mbps, and it works fine. So here's my question: What do you folks using UpShift use as a setting to transcode to? Logic would dictate using an end result no higher than the bit rate I used to shoot the footage at in the first place.

Is this what you folks do?

Thanks in advance.

TB

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Comments

MarkWWWW wrote on 10/17/2008, 5:38 AM

Excellent.

I bought USP4 a while ago and have found it extremely useful. But so far I have been lucky enough to avoid having to work with AVCHD. Nice to know that when that dark day arrives I've already got a tool to help me through it.

Mark

farss wrote on 10/20/2008, 3:56 AM

"I suppose that's worth a try Bob--you are saying to just downconvert each clip in turn and put it back on the timeline? All of the stuff I am doing right is indeed delivered in SD, so this would probably work for me. But never having done it, I am not sure if I understand you correctly--so I thought I'd ask."

Excuse my tardiness in replying, don't know how I missed this.

Anyway basically yes.
Try it first with one clip and see how it goes editing that. I find the 8bit SD Sony YUV codec a dream to edit with if I need that quality. It's not something I do a lot because I work in PAL and PAL's chroma sampling is almost identical to mpeg-2's. However in NTSC converting from HDV / AVCHD to DV costs you a lot of chroma data and you loose again when you render to mpeg-2.

If you find your test clip renders and edits OK doing it with a whole bunch of clips needn't be tedious at all. Peachrock's Veggie Toolkit has a Multirenderer that'll automate the task for you. You set it up to render all the clips in say one folder to a different codec in another folder. It might take a while, it'll take as long as it takes Vegas as that's what it's using, it just automates the task.

At the moment I'm capturing 31 hours of HDV for a client. She has an old G4 Mac and wants to do a rough edit / EDL using that and FCE. No problem, I'll use the Multirenderer to convert 31 hours of HDV to 16:9 DV that she can preview. It'll take the PC maybe 2 days to do the conversion but I don't need to even think about it while it works.

Bob.