[FFmpeg-devel] [PATCH] [2/??] [3/3] Filter graphs - Parser for a graph description

[Robert Swain]

Hello,

On 21/03/2008, vmrsss <vmrsss at gmail.com> wrote:
>  On 21 Mar 2008, at 14:40, Robert Swain wrote:
>  >>> The diagram for the second of the two examples might be clearer if
>  >>> it
>  >>> were drawn as follows:
>  >>>
>  >>>     ---> filter1 ---> (abc)
>  >>>             |
>  >>>             v
>  >>> (def) ---> filter2 --->

[...]

>  > Originally you wrote:
>  >
>  > filter1->filter2
>  > |         ^
>  > v         |
>  > (abc)     (def)
>  >
>  > ...gives...
>  >
>  > filter1, split, (filter2 * nop)
>
>  >
>  >
>  > Now you're writing (substituting filter1, split back in...):
>  >
>  > (filter1, split) * nop, nop * filter2
>
> Wait a minute: this graph is different from that of your previous
>  email which is just reported above. The differences being that here
>  filter1 has no input stream, while above it's got one, and here (abc)
>  is the first output stream, while above is the 2nd. So the graph above
>  is

Apologies. I thought the diagram was just being lazy and omitting
unnamed inputs. That's probably why I didn't understand this example's
syntax in the first place...

Rob