Installing ffmpeg + dependencies on AWS Linux AMI (repo issues)

Question

I'm installing ffmpeg to run on an Amazon linux AMI, and have added the rpmforge repo and the dag repo. Here are some guidelines I'm using for reference: TWoZaO and Razuna

The rpmforge repo has ffmpeg, but if you try to install it then it will complain that is missing dependencies (for me libSDL-1.2.so.0()(64bit)). Regardless I will install ffmpeg from svn so I can be sure to enable the options I want (namelylibx264). It seems strange to me though that SDL is not inrpmforgeordag`, and in according to both of my references above, it should be there. I tried to grab it manually from here, but it needs these dependencies, so no-go:

> error: Failed dependencies:   SDL =
> 1.2.10-8.el5 is needed by SDL-devel-1.2.10-8.el5.x86_64
>   alsa-lib-devel is needed by
> SDL-devel-1.2.10-8.el5.x86_64
>   libGL-devel is needed by
> SDL-devel-1.2.10-8.el5.x86_64
>   libGLU-devel is needed by
> SDL-devel-1.2.10-8.el5.x86_64
>   libSDL-1.2.so.0()(64bit) is needed by
> SDL-devel-1.2.10-8.el5.x86_64
>   libX11-devel is needed by
> SDL-devel-1.2.10-8.el5.x86_64
>   libXext-devel is needed by
> SDL-devel-1.2.10-8.el5.x86_64
>   libXrandr-devel is needed by
> SDL-devel-1.2.10-8.el5.x86_64
>   libXrender-devel is needed by
> SDL-devel-1.2.10-8.el5.x86_64
>   libXt-devel is needed by
> SDL-devel-1.2.10-8.el5.x86_64

Answer 1

I found that the missing dependency is in the centOS repository, which in amazon ec2 is not included. I added the repository and was able to configure and install ffmpeg. For anyone doing the same I recommend the Razuna guide I mentioned in the question : http://wiki.razuna.com/display/ecp/FFMpeg+Installation+on+CentOS+and+RedHat

( Thanks to rubberman on linux forums for the solution )