Xvid which bitrate

You can target a bitrate with -b:v. This is best used with two-pass encoding. Adapting an example from the x encoding guide: your video is 10 minutes seconds long and an output of 50 MB is desired. Powered by Trac 1. The external encoding library libxvid : ffmpeg -i input.

There are a few bitrate calculators floating around, like this one at videohelp. Within AviDemux, you can set the encoding mode and use two pass encode with either a target size, or an average bitrate you want to hit. But frankly, worrying about this sort of thing to get the very smallest size file while maintaining quality can drive you crazy…er, crazier. Thanks all for your answers. The bitrate can be proportionally decreased with the framesize, so at x anamorphic 2.

At least if you installed AutoGK and the version of Xvid that came with it? Did you uninstall the other xvid first? You can try Virtualdub to see if you can achieve your targets. AutoGK does certain compressibility tests, and it tries to pick the resolution that ensures some quality based on the bitrate you chose. Not surprised it was small. Use Virtualdub, you have full access to the encoder settings. I'll see what I can do about that big picture.

I am after some theory first. So i set a bitrate, say And i get Ok, fail — but then i set and get So the settings kind of follow what is set, just not exactly. The Xvid configuration has so many options. What settings are the most important for the size, besides bitrate and resolution? A person higher up mentioned custom quantization matrix, but that sounds like very deep water for me. Why don't you upload here to the forum 10 or 15 seconds or so of your source.

Then we'll know what we're dealing with. On the Paul McCartney clip I encoded above, I specified kbps, but got - as you can see it's very close. I believe the forum allows you to upload,files up to MB.

I've never used custom matrix in xvid, you'll have to read up on it. You can start off by opening the xvid encoder dialog and setting it all to default. Then set your bitrate. It's a reasonable place to start. The whole reason for this thread is that, suddenly, with this movie, it no longer works, and misses the set size so badly. Getting the wrong size sometimes stems from installing a different version of XviD over an already existing version where you should remove the original one first.

Also, if AutoGK gave you that small resolution then the filesize you chose was too small for that particular video.

You can force the resolution you want in advanced settings, but if going for the same size as what produced that x result, yours will look like crap at p. Just decreasing the bitrate can only get one so far. That happened in and since then there was only one quality improvement: VAQ from x's code.

Right now there is Xvid 1. Do both of you happen to despise MP3 too? Given enough bitrate, either can still produce adequate results for most people I know personally despite there being better alternatives available, if you have the hardware to support them.

I don't class the pretend HD offered by Sky as being HD due to the painful mangling it receives before hitting a person's eyeballs. I'd rather watch well encoded SD content than any of the "broadcast-quality" HD content we currently have available here. Even John Logi Baird is probably spinning in his grave at the utter poop Sky push into people's homes from a technical standpoint.

It's just completely unwatchable by my standards, although I am perfectly aware that that's their fault and not that of HD as a standard. And no.