[Q] Failing miserably at making a boot animation... WTF am I doing wrong?

HI all,

I am trying to create a boot animation for my N6, it's a family video that lasts 33 seconds.
I used ffmpeg to extract the images, I tried different resolutions (720x400, 720x1280, 960x720, 720x540, 1440x800, and 1440x1080), and frame rates (8, 12 and 30).
The desc.txt looks like this:
720 400 12
p 0 0 part0
p 0 0 part1

Also
1440 1080 8
p 1 0 part0
p 0 0 part1

There's a total of 264 images, with only 1 on the part1 folder.
I also tried 'c' instead of 'p' in the desc.txt. I used jpg and png formats.

If I'm lucky the phone boots w/o showing the animation, other times, it boots, but there is no video at all and I have to boot recovery, remove bootanimation.zip and reboot (permissions are 644 on the file).
Any suggestions?
WTF am I doing wrong?
Thanks in advance