[FFmpeg-trac] #6424(avfilter:new): endless loop in avfilter.c

FFmpeg trac at avcodec.org
Thu Jun 1 11:55:26 EEST 2017

#6424: endless loop in avfilter.c
             Reporter:  tinybug      |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:  deadlock     |               Blocked By:
  regression                         |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |

Comment (by Cigaes):

 This is a bug in amix:

                         /* unclosed input with not enough samples */
                         return 0;

 Returning 0 without filtering samples is not acceptable. Fixing it with
 {{{AVERROR(EAGAIN)}}} allows to make some progress, but freezes later.

 I will try to look into it if time permit, but I consider amix to be
 mostly unsupported.

Ticket URL: <https://trac.ffmpeg.org/ticket/6424#comment:3>
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