MPEG4 Aspect Ratio and Colour

[Tim-Philipp Müller]

On Fri, 2012-09-14 at 11:29 +1000, Daniel Punch wrote:

Hi,

> I'm using GStreamer to convert a sequence of JPEG images into an MPEG4
> video, using ffenc_mpeg4. The original images are 768x435, which is
> not quite 16:9.
> 
> The resultant video looks fine in other media players (MPlayer,
> Windows Media, etc.), but if I try and play it back using GStreamer's
> playbin then the colours are wrong (a green tint over the image, with
> a particularly pronounced green rectangle covering the centre third of
> the image).
> 
> If I use a videoscale element to force the video into a more standard
> aspect ratio when I'm encoding it then everything looks fine in
> playback.
> 
> Is this likely to be a bug in GStreamer or something I've done wrong?
> I'd prefer not to have to worry about the dimensions of the images
> that my application is receiving.

Chances are that it's a bug in some GStreamer element. Could you file a
bug please, and attach a small sample file (or a script to create one) ?

Cheers 
-Tim