Another DVD burning question

Jebadia · Post by **Jebadia** » Fri Dec 26, 2003 12:18 pm

Before the data rate error that I got when trying to burn, it also told me:

Your project contains MPEG video that has illegal parameters for DVD. This disk will be playable with PC-DVD players but NOT in set-top DVD players.

What parameters would these be?

DJ_Izumi · Post by **DJ_Izumi** » Fri Dec 26, 2003 2:25 pm

To it's most anal retentive, DVD Set Tops require a 'Closed GOP' to make seeking signifigantly easier. That's most likely it.

Resolution could also be an issue... Audio frequency...

Jebadia · Post by **Jebadia** » Fri Dec 26, 2003 3:28 pm

Well it isn't res, I'm fixing the GOP. Would it matter if I leave the audio at 44100, or should I go ahead and convert to 48000. Would the frequency change make a difference in sound when played on tv?

DJ_Izumi · Post by **DJ_Izumi** » Fri Dec 26, 2003 3:33 pm

DVD standard requires 48000khz audio, that's PROBABBLY your problem, if you made it 44.1khz. While when given audio that is 44.1khz, 90% of DVD players probabbly wouldn't even care or notice, many authoring programs are anal about standard compliance... You should be able to reencode the audio and re-mux the video, assuming the video is compliant.

narcted · Post by **narcted** » Fri Dec 26, 2003 3:52 pm

Look up the DVD player you are going to use at DVDR Help. It should tell you in general what the player will accept.

I've never heard of an error like that. True PC DVD players are more tolerant of discs than set top DVD players are. Your DVD player may still play the disc despite the warning. Here's the default settings for ULead DVD Movie Factory.

mpeg 2, 24 bit, 720x480, NTSC 29.97 fps, VBR (8000 kBits/s max), LPCM 16 bit stereo 48 kHz, 224 kbit/s

General DVD Video Parameter Settings

* Frame Size: 720x480 (NTSC) or 720x576 (PAL)
* Frame Rate: 29.97 frames/second (NTSC) or 25 frames/second (PAL)
* Video Data Rate: 4~8 Mbps CBR or VBR (Constant/Variable Bit Rate)
* Audio Settings: Stereo, 48 kHz and 192~384 kbps MPEG audio

Some DVD players won't recognize the disc if the video file is less than 1 GB. DVD MF has a feature called Quick Eject that automatically pads the video file to make it appear to the player that it's over 1 GB. This is also a double edged sword since doing that also makes it unplayable with other players. It's really hit or miss when it comes to playability in set top DVD players these days. I'd say just burn the disc and try it on the player.

Tab. · Post by **Tab.** » Fri Dec 26, 2003 4:11 pm

DJ_Izumi wrote:DVD standard requires 48000khz audio

*48000 hz, 48 khz

Jebadia · Post by **Jebadia** » Fri Dec 26, 2003 4:50 pm

I made a test cd with some of the reencoded files (before I started bumping the frequencies and fixing the GOP) It plays on my dvd player, but the sound is somewhat distorted (scratchy) id' assume thats from the lower frequency? (most of the audio's source was from cd not mp3).

narcted · Post by **narcted** » Sat Dec 27, 2003 4:29 am

Audio from the CD in uncompressed format should be better and preffered over any MP3 audio.

Did you test play it in your PC? If it's fine in the PC but you continue to have problems in the DVD player, most of the time there's nothing you can do with the DVD. The fault is with the DVD player. It has problems recognizing burned discs in this format.

Example: I have two DVD players at home. Nothing I have done seems to make the disc play on my JVC. Tried both +/-R formats as well as -RW. One time it just wouldn't give me back the disc. Screwdriver fixed that. The Cyberhome and most of the time my PS2 will play those same discs. The discs works on all PC.

If you still have the distorted sound playing in the PC, this would indicate problems that should be correctable. Then adjusting your audio settings has a good chance of fixing it.

Or you could even try using another DVD authoring software. I've had a pretty good record with Ulead DVD Movie Factory.

DJ_Izumi · Post by **DJ_Izumi** » Sat Dec 27, 2003 11:43 am

Yes, DVD was originally ment to use only LPCM (Linear PCM, that's basicly the same as CD Audio) so you can use that if you want 'ideal' audio quality, however you will have to drop your video bitrate to just under 8mbit to keep within the limits.

Also, a note on VBR. VBR is ONLY used when you can't use the highest maximum birate. For isntance, if you're putting 3hrs on a DVD, you can lower the birtate to like 6mbit, make it VBR with a max rate of 8mbit. It'll be more efficent then CBR 6mbit.

Since you're only tossing AMVs on the disk, you can easily go to the highest alowed CBR and cut you encoding time in half without any cost.

Jebadia · Post by **Jebadia** » Sun Dec 28, 2003 7:40 pm

Much thanx for the info and help. I got my hands on Ulead Movie Factory 2 and it is FAR less anal and with less restrictions than what I was using. My consol is :\ about playing the DVD's. The 16:9 files look jittery as well as files that were re-interlaced/teleclined (3:2 Pulldown, and yes I do have some mpeg2's at 29.970 that are not interlaced :\ from my ignorance during some older projects, but the player seems to play them smoother than the files with interlacing o.O, but that's what I should expect out of a $60 dvd player?)