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fftools/ffmpeg_filter: reject filtergraphs with zero outputs

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Nothing useful can be done with them currently.
This commit is contained in:
Anton Khirnov
2023-06-08 21:33:44 +02:00
parent a7aa05c599
commit b1a213ab5d
1 changed files with 6 additions and 0 deletions
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6
fftools/ffmpeg_filter.c
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@@ -845,6 +845,12 @@ FilterGraph *fg_create(char *graph_desc)
ofilter->name = describe_filter_link(fg, cur, 0);
}
if (!fg->nb_outputs) {
av_log(fg, AV_LOG_FATAL, "A filtergraph has zero outputs, this is not supported\n");
ret = AVERROR(ENOSYS);
goto fail;
}
fail:
avfilter_inout_free(&inputs);
avfilter_inout_free(&outputs);