I just booted with your bootanimation.zip on my sgh-i747 that is running cm10.2.1 stable, jb 4.3. I made sure perms set to 644 before booting.
It runs without any problem, after the sgs3 cm splash screens and loops repeatedly until boot completed and my lockscreen appears.
It is something in your rom; most likely designed to run qmg.
perhaps the settings, or the kernel, or syscntrl, or buildprops could me modded. I have no idea.
Your bootanimation.zip is fine.
Probably best to flash a complete AOSP or TW rom that supports custom bootanimations.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
SGH-I747 (AT&T Galaxy S III, August 2013 build date),
Firmware: CM 10.2.1-d2att, with stock 4.3 modem: I747UCUEMJB.