Re: [xine-devel] creating/inserting sequences of still images

[Michael R. <mr...@us...>]

Hi,

> I'm new to the world of streaming media, so please forgive me if I use
> the wrong terms.
>
> I'm looking to re-write our flipbooker (it loads sequences of still
> images and runs them at speed) to handle quicktime movies/audio.
>
> Instead of reading quicktime into a bunch of still images, what I'd
> like to do instead is use xine as a play-back engine for quicktime OR
> still images.
>
> What I think that means is that I need to be able to build a stream in
> memory, and have each frame of that stream be loaded from a still
> image.
>
> Ideally I'd also like to be able to replace any single frame of a
> quicktime (for display purposes) with a higher-quality (uncompressed)
> frame.  This at least I believe I could do by intercepting the video
> stream.
>
> Does that make any sense ?
>
> I believe the question I'm asking is "How can I make xine load
> sequences of still-images as a stream of video ?"

Currently, you cannot. But I think it is possible to extend xine to do that. 
xine can already decode and display PNG images. What would be needed for 
series of still images is:
* a new input plugin, that opens the various files and presents them to the
  rest of xine as one continuous stream
* a new demuxer plugin that understands the image stream from this input
  plugin and packages the data for the still decoder
* currently, the decoder can do PNG, but it would have to be slightly extended
  to learn that even still frames might have a duration; additional image
  formats can also be added

If someone wants to give this a try, the xine team would happily welcome any 
effort and answer any questions that might arise.

Michael

-- 
printk("autofs: Out of inode numbers -- what the heck did you do??\n");
	2.0.38 /usr/src/linux/fs/autofs/root.c