Here is the context, i have a amazon ec2 micro instance with ubuntu 14.04 and with blender 2.78 installed, i have a custom blend file with in output : file_format is H.264, color_mode is RGBA, in Encoding format is AVI and Codec is PNG. The problem is that when i launch rendering by the command line, the render fails and in the log i get this message :
Error: Specified pix_fmt is not supported
It may be a ffmpeg problem which i installed prior to blender following this : http://www.faqforge.com/linux/how-to-install-ffmpeg-on-ubuntu-14-04/
When i render it locally (Ubuntu 16.04, ffmpeg, blender 2.78) it works just fine.
Has anyone any idea how to resolve this?
Thanx.