Increasing the video bitrate?

[Remyisme]

I wanted to make vob files out of some little avi's and videos with little resolution and I try to do this with the Womble video wizard DVD mpeg and when i created one video, i noticed, it had pixels, and squares in it, so what I have done is, I increased the Video bitrate in the options, and noticed, that the more i increased, it, the bigger number, i put in there, the less, pixels and squares, I got in the video, what i'd like to know, can it hurt my video somehow in the future? would some players not be able to play it, or give out an error? can there be any side effects to it?

[shaktiIIIgta]

hi, im no expert but maybe taking a look at this would help, some specs of varoious formats (including max bitrate of a dvd)

https://www.videohelp.com/dvd#tech

[Baldrick]

Just stay under around 8Mbits and it should work fine on all players.

[thecoalman]

The "correct" bitrate is on a sliding scale. For example if you want a compliant DVD 720X480 8000kbps is about the max, after that you're just creating a larger file in most cases without any benefit. 4000kbps is about the minimum, if you go any lower the macroblocking or the blocks you refer to begin to increase dramatically. In between these two values is the sweet spot, generally speaking 6000kbps is very suitable for most video but if you're working with a bad souurce like VHS increasing that to 8000 is preferable. The sweet spot for any particular video "depends".


DVD has a specification and the max is like 9800kbps which is more than capable of handling any video at a very high quality. Most DVD authoring software will prevent you from going over this anyway. As far as going over that once you exceed the max your out of specification and a DVd plyer will not be required to play it. Compatibility is going to depend on your DVD player at that point. Some players have issues even when it approaches the max.

[Remyisme]

thanks, i have a video with 5200 kbps VBR, you mean not more than 8000? I honestly only care for the videos to play on all the needed computer programmes, players, power dvd, and the rest

[thecoalman]

The DVD spec max is 9800, if you go over that it might not play on some DVD players is what I'm sating. Playing it any softwre player should not be an issue no water what you use.

The reason for the 8000 is because once you go above 8000 you're not getting any benefit in most cases and just creating a larger file.

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Not mentioned is how this realates to resolution. If for example your encoding 352 x 480 then the max you would want to use is around the 4000kbps mark. The bitrates mentioned are specific to MPEG2, different codecs will have different "sweet spot" bitrates.

[Remyisme]

, thanks. i just want to make a dvd, and be sure that it will be playable, on my pc, like, always, i guess, if i have number of videos, with different bitrates, that if i put them all in one GB vob file, than the bit rate will be equal, for all of them, and it probably will be 8000...

[jagabo]

if i have number of videos, with different bitrates, that if i put them all in one GB vob file, than the bit rate will be equal

Only if they all have the same running time.

file size = bitrate * running time