[libav-tools] AVCONV -filter_complex option unrecognized.
keith.lawson at libertas-tech.com
Wed Sep 18 00:54:11 CEST 2013
On 2013-09-17 14:25, Miscell smith wrote:
> I'm afraid that -vf instead of -filter_complex did not work. I think
> the -vf option works only with a simple chain of filters, not a full
> filtergraph with multiple inputs and outputs. The error message I got
> Output pad "default" for the filter "src" of type "buffer" not
> connected to any destination.
> Error opening filters!
> The -filter_complex command I have been using with avconv would work
> with ffmpeg, so I suspect it is simply that this option is not
> implemented in the version I am using (but which version would?).
I'm not a libav developer so I can't speak about -filter_complex and
when it was removed from avconv but it certainly doesn't appear to be
there any more. I can confirm that -vf works for complex filters with
avconv though as I use them to split video streams and combine them
The error you're getting is because of a problem with your filter, not
the switch. The filter is being parsed now but I think you're getting
the "not connected to any destination" because you haven't defined any
outputs for your input filters. The syntax should be:
In your command I see  and  for in_links but no matching
What exactly are you trying to accomplish? I may be able to help you
figure out the filter syntax. Once you get that right it should work,
avconv definitely supports it.
> On Sun, 9/15/13, Keith Lawson <keith.lawson at libertas-tech.com> wrote:
> Subject: Re: [libav-tools] AVCONV -filter_complex option unrecognized.
> To: libav-tools at libav.org
> Date: Sunday, September 15, 2013, 8:31 AM
> On 2013-09-15 05:12, Miscell smith
>> I'm trying to use AVCONV -filter_complex option as
> shown below but get an unrecognized option error. Please
> would you tell me which versions implement this feature? I
> am currently using standard Debian packages (from Jessie).
>> avconv -i %04d.jpg -i scale%04d.png -filter_complex
>> -vcodec libx264 -profile:v high -r 25 -an test.avi
>> avconv version 0.8.7-6:0.8.7-1, Copyright (c) 2000-2013
> the Libav developers
>> built on May 20 2013 12:25:19 with gcc 4.7.3
>> Input #0, image2, from '%04d.jpg':
>> Duration: 00:00:07.04, start: 0.000000, bitrate: N/A
>> Stream #0.0: Video: mjpeg, yuvj440p, 1920x1080 [PAR
> 72:72 DAR 16:9],
>> 25 fps, 25 tbr, 25 tbn, 25 tbc
>> Input #1, image2, from 'scale%04d.png':
>> Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
>> Stream #1.0: Video: png, bgra, 338x30, 25 tbr, 25 tbn,
> 25 tbc
>> Unrecognized option 'filter_complex'
>> Failed to set value 'overlay=791:1050' for option
> I'm not sure about the -filter_complex switch but I'm able
> to use complex filters with avconv just using the -vf switch
> and passing the appropriate filtergraph parameters. The
> filtergraph documentation here really helped me figure it
> https://libav.org/libavfilter.html#Filtergraph-description 
> I'd try passing your filter with just "-vf".
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