[FFmpeg-devel] [PATCH v3 2/2] avdevice/lavf: change the dumpgraph option to bool type

Nicolas George george at nsup.org
Tue May 19 18:02:42 EEST 2020


Nicolas George (12020-05-19):
> Originally, the second parameter to avfilter_graph_dump() was supposed
> to be dump options. None was ever added, and I later came to realize
> that using a string for that was more of the same bad idea.
> 
> I have no objection to making this bit obsolete, but please do it
> knowingly.

Again, forgot something before sending:

The idea was to be able to output other kinds of graph representation.
The current one is a very clumsy attempt at ASCII-art. But we could have
added:

	avfilter_graph_dump(graph, "fmt=dot");

to get output in Graphviz DOT format, basically importing
tools/graph2dot.c into libavfilter/graphdump.c. Finally doing that may
be a better idea than obsoleting the option.

And of course, other formats are possible too.

Regards,

-- 
  Nicolas George
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