Archived from groups: rec.video.desktop (
More info?)
Were you wanting to be picky, or we're you wanting to answer a beginners
question? This person is just starting out and thowing DVD standards Volume
1-5 is not going to help them any.
"Ken Maltby" <kmaltby@sbcglobal.net> wrote in message
news:ktCdndyVcZmqCGPcRVn-tw@giganews.com...
>
> > "Tavish Muldoon" <tmuldoon@spliced.com> wrote in message
> > news:e2470f35.0501310731.5da896d@posting.google.com...
> >> When using a DVD re authoring program, is there any need to convert
> >> files to mpeg2? Or should I let the application do it?
> >>
> >> I thought converting files to mpeg2 would make the rendering process
> >> faster. True or not?
> >>
> >> I noticed for one of my .avi files the sound was sampled at 44khz
> >> (something like 126 bit?). If I convert this to mpeg2 or let a dvd
> >> authoring program take over - will it convert the audio to the right
> >> sampling (48khz).
> >>
> >> I have been having problems with audio being out of sync with video -
> >> maybe this is the reason?
> >>
> >> Thanks,
> >>
> >> Tmuld.
> >
>
> "RS" <idontthinkso@mail.com> wrote in message
> news:41fe6af3$1_3@newspeer2.tds.net...
> > Files for DVD authoring must be in Mpg2 720x480 format. The rendering
> > codecs
> > included with authoring programs are usually not the best or the
fastest.
> >
> > Convert to mpg2 format before authoring. Cinemacraft Encoder is good.
> > Tmpgenc is decent.
> >
>
>
> The DVD Standard supports several formats besides 720x480.
>
> MPEG1:
> NTSC 352x240 / PAL 352x288
>
> MPEG2:
> NTSC
> 352x240 /(352x480 IMHO the Best for most home sources and
> a normal analog display [Interlaced TV])
> 704x480 / 720x480
>
> PAL
> 352x288 / 352x576
> 704x576 / 720x576
>
> Audio:
> MPEG-1 Audio Layer2(.mp2)
> Dolby Digital Audio AC-3 (.ac3)
> Linear PCM (.wav)
>
> The Audio handling in TEMPGEnc DVD Author (TDA) works
> just fine with any of the above formats, and will convert sample
> rates to 48k.
>
> To the OP; you appear to be addressing two different situations.
>
> One using DVD as a source, in which case a good DVD author
> program can use unencrypted DVD as the source for a new
> DVD. If you have DVDShrink make a VIDEO_TS folder, on
> your hard drive, the author program should be able extract the
> MPEG data for a new DVD.
>
> The other, you have .avi files, now a days AVI could mean
> anything, in terms of the video and audio format it carries. In
> any case you will need to convert these at some point to a
> DVD compatible MPEG like described above. There are
> programs like DVDSanta and WinAVI that can make this a
> simpler task. The process that gives you the most control
> is to use an MPEG Encoder like one of the TMPGEnc
> Encoders. www.pegasys-inc.com Then feed the result to
> an Author Program, like TDA. (Some like DVDLab)
>
> There are many possible causes for "sync problems",
> most often it will take some effort to track the actual
> source of the problem down. I've found it handy to have
> a copy of VideoReDo on hand. www.VideoReDo.com
>
> Luck;
> Ken
>
>