Posted: Mon 16 Jun 2003, 19:39 Post subject: Encodeing Problems
Hi,
I have an XviD movie (23.937 fps) that i converted to mpeg2 (NTSC) useing TMPGenc. I used the manual Configuring TMPGEnc for high-quality, DVD-compliant MPEG-2 on this site to the letter!
My problem is the picture seems a little blurry, and it pauses briefly (Choppy) when i play on my ps, or my home player, every few minutes.
I was hopeing someone might know what i did wrong?
My Video Stream Settings:
Size- 608x256
Frame Rate- 29.97
2 pass VBR- Min.2000, Max.8000, Average 5000
Aspect ratio- 4:3
Motion- High Quality
Encode mode- Interlase
My Video Source Settings:
type - Non Interlase
Field order- Bottom First
Aspect- 4:3 NTSC 525 line
Arrange method- Full screen Keep aspect ratio.
Joined: 04 Feb 2003 Posts: 587 Location: Lisboa, Portugal
Posted: Thu 19 Jun 2003, 3:12 Post subject:
If your source file is 608x256 pixels (which is not standard, and very definitely not 4:3), then your authoring program has resized and recompressed it. Make sure that the file produced by TMPGEnc is the correct size for video (720x480, for NTSC).
The best way to ensure the file is properly resized is to do the conversion in an editing or compositing program (ex., Premiere, After effects, etc.). Then save the resized move to a new file (using low or no compression) or export directly from your editing program to TMPGEnc using a frameserver.
Joined: 04 Feb 2003 Posts: 587 Location: Lisboa, Portugal
Posted: Thu 19 Jun 2003, 17:25 Post subject:
Where do you get that error? In Premiere? Or in TMPGEnc?
Assuming it loads into Premiere, simply load that file, put it on the timeline, resize and retime it (to 29.97 fps, 720x480 pixels), being careful to preserve the original aspect ratio. Then follow the information in the frameserving guide to export the project from Premiere to TMPGEnc. This will export uncompressed frames, so TMPGEnc will have no problem loading them.
If you can't load the file into Premiere, things are a bit trickier. Xvid and DivX codecs are a bit strange, and some programs can't load them correctly. I don't have much experience with them (I think it's a complete waste of time to convert them to DVD - it's cheaper to get a graphics card with TV out and play them on your PC); perhaps someone in the DVRHelp.com forums will know how to make Premiere load them correctly.
Joined: 04 Feb 2003 Posts: 587 Location: Lisboa, Portugal
Posted: Fri 20 Jun 2003, 15:35 Post subject:
The "graphics card" is the card you connect to your VGA monitor. Most modern graphics cards also have a TV output (either s-video or composite). A "video card" is usually the term used to describe a video capture card (like a DV or M-JPEG card).
DivX and Xvid are MPEG-4 based formats. MPEG-4 is more advanced than MPEG-2, and manages to get better compression for the same quality. This means that when you convert it to MPEG-2 (the format used in DVD), you will either lose quality or end up with a bigger file (often both). You also waste a lot of time in the conversion, and you have to pay for the recordable DVD.
Personally, I find it much easier to connect the TV-out to a TV (or simply watch the movies on your PC, but most people prefer to watch them on the TV). This way you can watch the original Xvid and DivX movies (and even Quicktime movies, Flash movies, etc. - anything that your PC can play). You don't waste time converting to DVD, you don't lose quality, and you don't spend money on the DVD discs. Simpler and cheaper. The only disadvantage is you need to turn on your PC when you want to see a movie, but most people leave their PC on all day, so that shouldn't be a big problem.
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