Video Bitrate Calculator

With this little calculator you can calculate the bitrate of a video based on the length, the resolution and other parameters. We found this script in our archives, maybe it is useful for someone, esp. as Silverjuke supports videos now ...

Step 1: Calculate the Video Bitrate

Desired size for the complete clip: MB ?
Clip length: minutes
Audio bitrate: kbit/s ? or audio size: MB
Assumed codec overhead: %
Resulting audio size: MB
Resulting video size: MB
Resulting video bitrate: kbit/s

Step 2: Find Best Resolution regarding the Video Bitrate

Desired video resolution: x pixel ?
Desired video frames: fps ?
Video bitrate from above: kbit/s
Resulting bits per pixel: bits/pixel

Bits per pixel explained:

< 0.10: Don't do it.
0.10 - 0.15: It will look bad.
0.15 - 0.20: You will notice blocks, but it will look okay.
0.20 - 0.25: It will look really good.
0.25 - 0.30: It won't really improve visually.
> 0.30: Don't do that either - try a bigger resolution instead.

Of course these values are not absolute! For movies with really lots of black areas 0.15 may look very good. Action movies with only high motion scenes on the other hand may not look perfect at 0.25 - moreover there are codecs which are better at a given bitrate than others. However, these values give you a rough idea about which resolution to chose.