if you want to use the adb here are the instructions and commands
1. ensure the bootanimation is a .zip, place the .zip in your tools folder in the sdk folder
2. open a terminal/command prompt
3. navigate to your tools folder in the sdk
4. enter, adb push bootanimation.zip /system/customize/resource
or
adb push bootanimation.zip /system/media
5. to test your bootanimation enter, adb shell bootanimation.zip
6. if it works do control+c to stop the boot
7. if it doesnt work there is something wrong with the .zip, try unzipping it and take a look inside, if all is well, you'll have to zip it back up, the trick is to zip the .dsc, part1, part2 folder together, DON'T zip the bootanimation folder.