Starting point dv-avi to mpeg2 conversion, reference, somebody, possible

andy

Hi there,
I was trying to convert DV avi files that I recorded with my camcorder to MPEG2 to convert them later on to Divx.
I used TMPG but the output has several funny artifacts when a sudden movement appears in the video.
I tried to follow DOOM9 guide for the use of TMPG but it always makes reference to D2V projects from dvd2AVI. But I don't know, if possible, to create that from a DV avi file.

Could somebody tell me, either where to find some guide that deals with the conversion of DV avi into MPeG2 through TMPG or just some settings to avoid these artifacts in moving scenes??

I hope I made sense.
Thanks in advance.

El Sr Al.

The d2v files can be used for MPEG2 source only. What you need is filtering to get a proper MPEG2 file.

Your quot;funny artefactsquot; could be caused by the interlacing of the DV file. If this is true, you can either deinterlace and encode MPEG2 in progressive mode (which gives better compression, but you'll loose a little bit of detail), or encode MPEG2 in interlaced mode. Make sure you set the correct field order, else your video will be jerky.

bb

It works VERY well, play around with it!  It creates nice DVD compatible Mpeg2 files from DV!  And guess what when played on any standalone they are MARVELOUS!!!!!!!!!!!!

I take it you do not want to make SVCD compliant Mpeg2 encodes seeing as you're gonna use them as source for quot;laterquot; DivX encodes ?

If you encode with 2600 kbps (max for SVDC spec) I can tell you that those final DivX avis will truly suck. Why not make both DivX and SVCD from the same clean source from the start? Or at least the other way around. I'm confused ...

Anyways, the only (sane) reason for making SVDCs is for viewing on the TV, else DivX will make a much better job of it. On the TV (through your standalone DVD) the interlaced fields will look very good, so DO NOT deinterlace for SVDCs, I can't stress this enough!

Using max bitrate in tmpgenc will make VBR redundant (or even worse) than CBR. Also you should add borders to compensate your TV's overscan. This is not merely a cosmetic detail, but a way of dedicating as many bits per visible pixel as possible. Also, don't use the templates. Just comply to specs and use the most goddam-awful-slowest settings possible. Even so you'll never get rid of macro blocks in fast panning scenes, but this will get best quality possible given the SVCD prerequisites.

I can strongly recommned DVD2SVCD which has an AVI2SVDC option as well. Here you'll have to let the program know that you'd like to edit your avisynth script manually just to get some borders in. after that it's allmost a one-click-solution with Tmpegenc quality. Forget all comersial solutions, they will never come close to the mish mash of enthusiast freeware we've got going on this forum. DVD2SVCD is the quot;gluequot; for this mish-mash in this particular case.cheers

I am using Tmpg CQ=80 Average BR=4700 Max 5500
This doubles the Svcd BitRate, giving 18-20 mn per Cd
The batch feature helps to encode several sequential scenes.
At the end I use the Tmpg Tool to merge the scenes.

I have also implemented a quot;specialquot; DV matrix.

All put together the results are excellent. In addition the Mpeg2 is fully Dvd compliant, ready for further Authoring if needed.

The only soaring point is the quot;glitchquot; between each scene.Hard to fix.

In a near future, I hope that the Avi2Svcd version of Dvd2Svcd will fix this issue with a quot;batchquot; feature merging the scenes.

xly

It's more fun to compete !!