AVI or MPEG II?

Moderator: Ken Berry

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sharanmini

AVI or MPEG II?

Post by sharanmini »

Hi There,
I have VS8 and Computer 2.8 MHz, 768 MB RAM with Firewire,Win XP Pro, 40 GB HD.
To get better quality DVD to play on TV , how should I capture? whether DV-AVI or MPEG II.

Please help me.

Thanks,
Sharan
THoff

Post by THoff »

You'll get the best quality by capturing to DV AVI first, and then transcoding to MPEG2 separately, rather than trying to do it in realtime.
sharanmini

Post by sharanmini »

Hi THoff,
here is my understanding.
1.Capture DV-AVI
2.Edit DV-AVI
3.Save video file as DV-AVI
4. Share-When burning to DVD burn as MPEG2.

Is that true, or is there any other work flow?

Thanks,
Sharan
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Ken Berry
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Post by Ken Berry »

It depends on what you personally plan to do. Certainly follow your steps 1 and 2. I also follow your step 3 (Share > Create Video File > PAL DV) but that is because I always send my edited videos back to the video camera for storage and to be able to use the camera as a VCR for family members who don't have a DVD player.

If you don't intend to do anything like that, then after your step 2, you might want to consider instead of your step 3, substituting a new one: "3. Save as DVD-compatible MPEG-2". (I do this in addition to creating a final DV file.) To do this, go Share > Create Video File > PAL or NTSC DVD'.

Once you have produced the final DVD-compatible MPEG-2, and you have played it and think it is okay, then you can go to the burning module and burn it to disc (Share > Create Disc > DVD), inserting your file (and any others) in the burning module list.

A number of people who use the final DV/AVI file directly in the burning module have experienced problems in the past, including the dreaded out of sync problem. On the other hand, using my suggested work flow (i.e. first produce the DVD-compatible MPEG-2 and later burn it to disc), I have never (that is, in the words of our American cousins, zip, nada, zilch) had any problem at all in producing an effective final DVD in more than 2 years of using first VS 7 and now VS 8.

If you are worried about this work flow taking longer, in fact the difference in time is minimal and well worth the effort anyway. Once you have opened the burning module, what you need to do, though, is click on the little icon down in the bottom left hand corner (with the cog-wheel in VS 8 and the blue tick in VS 7), and then make sure 'Do not convert compliant MPEG files' is checked. That way, once the program satisfies itself that your final MPEG-2 file is in fact DVD-compliant, it will simply go straight to the burning process, so you don't have the duplicate transcoding time (which you have already experienced in producing the MPEG-2 file in the first place).

Good luck!
Ken Berry
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Post by DVDDoug »

MPEG is not supposed to be edited. If possible, all of your editing should be done before MPEG encoding.

MPEG is "lossy compression". This causes it to be degraded when you edit it. You can cut and splice without problems, but any "real" editing which requires it to be decoded and re-coded will degrade the video.

For example, if you join two clips with a transition effect (like a crossfade), you will see severe "blockiness" during the transition. This isn't always so terrible, because it sort-of looks like part of the effect.. but that may not be what you want.

In addition, I've had the infamous audio/video "lip-sync" problem when making DVDs with Video Studio edited MPEGs... This got so frustrating, that I bought another MPEG editor!
rwindeyer

Post by rwindeyer »

Hi Sharan

Your suggested workflow is exactly what I do; I have never had a problem. As you will see, others on this board advocate going to a mpeg file on the 3rd step - it apparently saves a little bit of time overall. That is a fine point, and a matter of personal preference.
What we all agree on: in a vsp project file, all those little thumbnails point to files or parts of files scattered across your hard drive. (The first half of this clip, all of that clip, this transition etc etc) Before attempting to burn a DVD you must assemble all that data into one contiguous file, with the SHARE - CREATE VIDEO FILE command.
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