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