skippy jerkish motion

[nkro]

Using tmpgenc ill convert a avi file to a mpg and it will play nicely on my computer. Once i burn it to a vcd itll play for about 30 seconds nicely, then start skippin kinda like the way a movie would on a computer with a crummy video card. Can anybody tell me what i can do to stop this jerky motion.

[CryptKeeper]

stop burning porn

[nkro]

....

[CryptKeeper]

maybe try a slower burning speed?

[Olli]

Are you playing an NTSC film converted to PAL on a PAL TV or vice versa ?

TMPGenc does do frame conversion but not very well, so the result can be choppy playback. There are steps around this, so let me know what format your source is and what you are converting to.

[nkro]

I did it all in NTSC

[CryptKeeper]

what program did you use to burn the vcd?

[nkro]

i used nero

[gll99]

Give more info on VCD and the original avi.
Framerate (23.97 or 29.97), Video Bitrate and whether constant bitrate or vbr, audio bitrate.

anything else you can supply.

Did you change the disk (cdrw I hope) after each test.

[nkro]

the origanl avi file was divx. i used a standard 700 megabyte 80 minute cd-r each time. The frame rate was set to 29.97 and i believe the bitrate was 1250.

[CryptKeeper]

was the original frame rate 29.97 or did you change it during encoding?

[gll99]

The scary part here is the fact you you started with a divx.

We need to know not just the video but also audio specs. Believe or not they can cause problems too like encoding 48000 instead of 44000 some players choke on that. We also need to know your tools.

Also "I believe the bitrate is 1250" won't help a lot, accuracy is important. Imagine if you encoded and mpeg1 at 3000 bitrate your VCD would probably jump and sputter all over but we wouldn't think of asking again.

We cant see the problem so rely on you to be the eyes and ears. You then have to clearly and step by step lead us through what you did and how you did it. Anything else would just be like hunters taking a bunch of shots in the dark (they may hit a deer someday but man everyone else better duck and it will cost a lot in ammunition)

I am jesting a bit here but please help the helpers.

[nkro]

this was the origanal avi file:

Video - 352 x 240, 24 Bits, 59875 Frames, 14.985 Frames/Sec, 44 KB/Sec, MS-MPEG4 V3. So i guess it wasnt divx

Audio - MPEG Layer-3,56 kBit/s, 24,000 Hz, Stereo

The mpg i encoded usin tmpgenc was made 29.97 fps, the bitrate was 1150, it was non-interlace. The aspect ratio was 4:3 525 line (NTSC, 704x480). The audio bitrate was 224 kbits/second. Stream type Mpeg-1 audio layer II. It was made to be fullscreen keep aspect ratio. 352 x 240

[gll99]

first off by doubling the framerate to avchieve the 29.97 you would not get an improved playback it just adds duplicate frames but it should not cause your movie to do anything but look continuously but gently and steadily jumpy. Like you know the movement isn't natural. I encoded star trek episode at 1/2 rate once and it was a bit wierd to watch but not that bad.

Doubling the framesize to 704x480 in this case could be aggravating things. Are you sure your player supports it for mpeg1.

I have never processed an MP3 audio as input in tmpg so I can't comment. I usually convert prior to a wav format. That could also be a cause but someone else who has done it would need to comment.

I guess you will never get a smooth video no matter what because you started with slow frame rate. I would try to put the video back to 352x240 just to eliminate that as a possible cause. You don't have to reprocess the whole avi just select a range in tmpg and cut that portion to process.

Use cdrw if you can. Make sure when you burn that you set mutisession OFF and finalize the disk.

I wish I knew about the audio.