On 2021-03-21 22:40, Mark Filipak (ffmpeg) wrote:
Hi All,
A little help, please.
Using the latest git source, using '-filter_complex_script', I get a
mystery error.
I have checked the filter_complex_script: 23fps.ffmpeg.filter.txt, for
errors. Especially I've checked that every input pad (especially
[AA1]) has one and only one matching output pad, and that every output
pad (especially [AA1]) has one and only one matching input pad.
Can you suggest any other checks or should I file a bug now?
…
=== command line ===
ffmpeg -i "THE LAST EMPEROR.excerpt.24fps.mkv" -filter_complex_script
23fps.ffmpeg.filter.txt -map 0 -codec:v libx265 -x265-params
crf=16:qcomp=1.00 -codec:a copy -codec:s copy -dn "THE LAST
EMPEROR.excerpt.60fps.mkv"
=== debug level report ===
...
[AVFilterGraph @ 0000020abb032040] No output pad can be associated to
link label 'AA1'.
[Parsed_fps_2 @ 0000020ababb3180] 0 frames in, 0 frames out; 0 frames
dropped, 0 frames duplicated.
Error initializing complex filters.
Invalid argument
...
=== filter_complex_script ===
[in]settb=expr=1/720000,setpts=N*30030,fps=24000/1001,
separatefields,split[ABC][abc],
[ABC]tinterlace=mode=drop_odd,split[AC][B],
[AC]tinterlace=mode=drop_odd,split[AA5][AA3][AA1][AC1][AC3],
[AA5]select=eq(mod(N\,2)\,0),setpts=PTS+30030[A5],
....
I haven't read carefully enough to understand this whole filterchain and
command output. But reading the error message in a simple-minded way,
it seems that FFmpeg is setting up the filter chain, it has a filter
'split' which has a certain number of output filter pads, and it can't
find a filter pad to assign to the label 'AA1'. There are 5 labels
after the split filter. How many output filter pads does the split
filter have?
The previous line has a split filter with two output pads. 'AA1' is the
third label in the output list. So perhaps the split filter had only
two output pads when you use it this way?
At the Split filter documentation
(http://ffmpeg.org/ffmpeg-all.html#split_002c-asplit), it says,
> To create 3 or more outputs, you need to specify the number of
outputs, like in:
> [in] asplit=3 [out0][out1][out2]
Let's assume the `split` filter (video) works the same way as the
`asplit` filter (audio).
Try changing your filter from:
> [AC]tinterlace=mode=drop_odd,split[AA5][AA3][AA1][AC1][AC3],
by adding '=5' after 'split', so it becomes:
> [AC]tinterlace=mode=drop_odd,split=5[AA5][AA3][AA1][AC1][AC3],
I haven't tried this myself.
Best regards,
—Jim DeLaHunt
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