ffmpeg is hell...

[nmaxwell]

hi, im new here, and to video encoding..

So I'm a grad student and this part of my research is on solving wave equations.
So something I need to do is produce videos of some of the results.
What I've been doing is rendering many png images, and using feh just loop through them.
This works great on my own PC, but I'd like to generally share some of the results, which means I need to encode the pngs into a suitable video format.

So I've spent several days worth of time trying different things with ffmpeg, with little success.

Here's a sample of what I'm talking about

http://img52.imageshack.us/img52/4492/comparisonu.png

http://www.youtube.com/watch?v=DpP8GFchVgo

the top is a shot of the video, and the bottom is the corresponding raw png, and I've uploaded the video to youtube.

First, the colors are way off, and also, there's this odd silver-blueish ghost like artifact throughout the video, which was present for every result I got with ffmpeg, regardless of what codec I used, etc., these problems were even present when I tried the x264 lossless options.

this is the command I used for this video

ffmpeg -f image2 -i %05d.png -r 25 -vcodec libx264 -vpre slow -crf 22 -threads 4 out.mp4

Does anyone have any general suggestions here? I've googled everything I can think of and tried many many different options.

Or more generally, can anyone suggest the best way to encode this kind of video? They look even worse once youtube has reencoded them.

thanks in advance for any help,
-nick

[Baldrick]

The command looks okey so I'm not sure what's causing this.

I would probably try another converter and see how it works, like virtualdub and avidemux. They should be able to open image sequences.