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I'm extracting astats info with:

ffprobe -f lavfi -i "amovie=video.flv,astats=metadata=1:reset=1" -show_entries frame=pkt_pts_time:frame_tags -print_format json

Blackframes info with:

ffprobe -f lavfi -i "movie=video.flv,blackframe=1" -show_entries frame=pkt_pts_time:frame_tags -print_format json

But when I'm trying to combine filters like this:

ffprobe -f lavfi -i "amovie=video.flv,astats=metadata=1:reset=1;movie=video.flv,blackframe=1" -show_entries frame=pkt_pts_time:frame_tags -print_format json

I've the following error: Invalid filterchain containing an unlabelled output pad: "astats=metadata=1:reset=1;movie=video.flv,blackframe=1"

How to combine output of two filters in a single json file?

Alexander Kislitsky
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1 Answers1

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When extracting multiple streams from lavfi graph, assign output pad labels of the form out%d starting with out0.

Use

ffprobe -f lavfi -i "amovie=video.flv,astats=metadata=1:reset=1[out0];movie=video.flv,blackframe=1[out1]" -show_entries frame=pkt_pts_time:frame_tags -print_format json

Gyan
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