better encoding?

[BleuKousuke]

Hi,



I've followed a guide to make a xvid video with virtualdub
I sort of made my own version of a preset I found (mixed two together)
But with the conversion the video doesn't go as fluid as the original larger divx (or xvid file)
it's like it's skipping frames when it's converted.
Is there something I can do about it?

second question.

When I want to convert a movie to a smaller resolution and bitrate,
how can I know what's the minimum bitrate I can use?
I've seen many bitrate calculators but they don't seem to show everything I need to know to make the video with the right specs


Thanking in advance

[jagabo]

I've followed a guide to make a xvid video with virtualdub
I sort of made my own version of a preset I found (mixed two together)
But with the conversion the video doesn't go as fluid as the original larger divx (or xvid file)
it's like it's skipping frames when it's converted.
Is there something I can do about it?

Probably. Without details on the source and what you did there's no way of saying what went wrong.

When I want to convert a movie to a smaller resolution and bitrate,
how can I know what's the minimum bitrate I can use?
I've seen many bitrate calculators but they don't seem to show everything I need to know to make the video with the right specs

A bitrate calculator can only tell you what bitrate to use to create a video of a certain size. The "minimum bitrate" you can use depends on each particular video. If you care about quality more than file size use Constant Quantizer encoding. Pick the quality you want and encode. The file will turn out whatever size is needed to maintain that quality.

Try AutoGK. It will do a fair job of balancing frame size and bitrate.

[guns1inger]

how can I know what's the minimum bitrate I can use

Short answer - zero. Bitrate calculators tell you what bitrate you need to hit a size target. That's it. Any other information a particular tool might have is gravy, but it usually has little to do with bitrate.

Also, avoid changing framerates. For instance, changing 23.976 to 25 or 29.97 fps will give you jerkiness. Encoding 29.97 fps at 25 fps will cause you to lose frames.

And squeezing a lossy encoded video even further using a lossy codec will reduce quality.

I second AutoGK as a good choice to start with.

[BleuKousuke]

it's a normal divx file I used as a source
I can't check it right now.

http://www.youtube.com/watch?v=N4YBbwOPfsk
Here is an example of what I converted on youtube
What do you guys think about the quality?

I didn't change the fps

Edit:I tried autogk
I think it's good but it doesn't work with my codec pack (cccp)

[jagabo]

That looks a lot better than your average youtube video. I suppose being anime helps. It played smoothly after downloading.