Please help with bitrates

[Lamberth]

Hi, I am a newbie and I have a question. Please somebody help me!!

I have downloaded several smallville episodes in avi, and I want to put them in dvds with Ulead DVD Movie Factory.

I am using Canopus Procoder to convert the avi into mpg, and there is an option where I can choose the audio and video bitrates.

So I set 96 kbps for audio.

I want to know if I can set for example 1250 kbps for video bitrate, to create an user-defined vcd, and then create a disc template in Ulead DVD movie factory vcd (1250 video data rate).

Would this improve the video quality, or the maximun video rate is 1150?

( All this is because I prefer putting 10 episodes with better quality rather than 12 per dvd )

Thanks a lot everybody and sorry for my english!

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[indolikaa]

MPEG-1 for DVD video bitrates can go as high as 1856 kbps and still be considered 'legal' for the format.

Your audio bitrate seems a little low, though. Have you tested it to see if you're happy with the sound quality?

By the way, your English is superb.

[Lamberth]

Thanks for answering man!

I know it seems a little low, but when I open the avi with GSpot, it says:

96 kb/s (48/ch, stereo) VBR so I supose it is a waste to go any higher than 96? Am I right? Thanks again

BTW, I am spanish and I owe my english to the TV show Friends !!

[indolikaa]

My Spanish is embarrasing, nothing compared to your English.


I never use any audio bitrate less than 224 kbps. You can do it, but you would want to test it and make sure your DVD player will handle it. I've tried lower rates and 192 kbps is the lowest tolerable rate I can stand...

[Capmaster]

BTW, I am spanish and I owe my english to the TV show Friends

¡muy bueno!

[Lamberth]

But if GSpot says that the avi is codified at 96 kbps 44000 khz, would I gain any audio quality if I convert it to a 128 kbps mpg?


And one last thing. Tell me if this is correct please:

A DVD is 4470 mb, so I can fill it with:

episodes at standard vcd: 1150 video + 224 audio = 1374 kbps

OR

episodes at 1278 video + 96 audio = 1374 kbps

Is that correct?

Thanks a lot!!

[indolikaa]

But if GSpot says that the avi is codified at 96 kbps 44000 khz, would I gain any audio quality if I convert it to a 128 kbps mpg?

If your source stream arrived at 96 kbps, increasing that stream to 128 kbps won't help. The only reason you'd need to increase it is if your DVD player won't play the audio.

You will need to change the audio from 44.1 kHz to 48 kHz. 44.1 kHz is not supported by the DVD format, so make sure you address that problem as well.

And one last thing. Tell me if this is correct please:

A DVD is 4470 mb, so I can fill it with:

episodes at standard vcd: 1150 video + 224 audio = 1374 kbps

OR

episodes at 1278 video + 96 audio = 1374 kbps

Is that correct?

That should work.

[Lamberth]

That should work.

And if I put for example 1400 video + 128 audio = 1528 kbps, will that work too, as it is below 1856 kbps?

And would it have more quality? What is the highest quality to reach from the avi source?

Thank you for all your help. You're the best indolikaa

[indolikaa]

The 1856 kbps refers to the video bitrate only. You should be able to push right up to this limit without any problem, and it will maximize your video quality.

In addition, you can add the audio stream above and beyond the 1856 limit. I'm not at home right now so I can't check for sure, but the last time I did one of these captures I used 224 kbps MP2 audio + 1856 kbps MPEG-1 video...

Try a test conversion and burn to -RW or +RW and make sure your player can handle it. I know its spec, but DVD players can be so finicky.

[Lamberth]

Thanks a lot for your help indolikaa.
Really, thanks.

[indolikaa]

You're welcome.