Re: [FFmpeg-devel] [RFC] FFmpeg Execution Graph Visualization

[Stefano Sabatini <stefasab@gmail.com>]

On date Tuesday 2025-03-18 02:32:13 +0000, Soft Works wrote:
> Hello everybody,
>  
> working on the subject of writing out filtergraph information
> obviously implies the goal of being able to visualize that data in
> some way. While I do have something for long, it's tailored for
> specific workflows and is hardly useful for most.
>
> Anyway, it shouldn't be required to use once another software for
> visualize the output. This decimates the usability for any such
> feature by far.  Few days ago, I was thinking about ways for making
> this feature really useful for everybody without needing to jump
> through any extra hoops. We have that range of writers (now "text
> formatters"), and so I wondered whether there isn't some text format
> that is meant to directly represent a graph for visualization
[...]
> Examples
> 
> I've created a Gist with some examples of the output here:
> 
> https://gist.github.com/softworkz/a196b2d0e9e2df49f766abd92f508551
> 
> (also includes a zip with html file examples) 
> Questions
> 
> I'm curious what you think about it!
> 
> - What's good, what's bad, what should be changed/improved?
> 
> - What about the displayed information, should something be added?
> 
> - I'm folding out the buffer source/sink filters to simplify the view, is that ok?
>   Should the TRIM filters be excluded as well?
> 
> - Since it's no longer just about filter graphs - what do you think about the term
>   "Ffmpeg Execution Graph"?
>   (other ideas welcome)
> 
> - Does anybody have some complex command lines for me to test?
>   (no need to include media files, I can try to replicate 
>   something similar)
> 

Thanks for working on this, from the examples it looks pretty amazing.

What it's not clear to me is how this builds up on top of text
formatters, since they are meant to render a tree structure in a
generic way. From this you can have a description of a graph, but then
you need specialized ad-hoc logic to convert it to a graph format.

What am I missing?
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