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> Hey Lars,
> 
> On Sun, 2003-05-11 at 01:04, Lars Damerow wrote:
> > I'd like to use gstreamer to make a video file out of a series of jpg files.
> > Is there already a plugin that can do this? I'd be interested to write one if
> > there isn't.
> 
> The easiest way to do this is to use a thread which contains a
> filesource and a queue (buffer), and then the main thread (pipeline)
> containing an avimux element (assuming you want an AVI movie) and a
> filesink:
> 
> { multidisksrc ! queue } ! .video_00 avimux ! filesink
> 
> The multidisksrc reads multiple files (one file per buffer), pushes them
> over to the queue element. The avimux element reads the buffers and
> creates an AVI file. Totally untested, all theoretical, but the elements
> are there and I guess this would just work... You probably want to set a
> filtered caps on the link between the multidisksrc and avimux.video_00,
> so that avimux knows the size of the incoming buffers.
> Filesrc/multidisksrc don't know this.
> 
> Another option is to replace multidisksrc with a filesrc and a parser.
> The parser would then be responsible for reading buffers from the
> bytestream filesrc (so that the whole file fits in one buffer) and parse
> the JPEG header so that it knows the size. It sets this information on
> avimux.video_00 and we've got a running pipeline. The parser can then
> also check that the sizes of different files don't differ, etc.
> 
> That's all, I guess. Choose whichever sounds most interesting. :-). If
> you want to save the JPEG images to another format than MJPEG video,
> simply insert a jpeg decoder (jpegmmxdec, jpegdec) and a video encoder
> (whichever you prefer) into the pipeline.
> 
> Ronald

___________________________________________________________
lars damerow
pixar animation studios
senior unix systems administrator
lars-gst at pixar.com

"Rice Chex," he said dreamily.