[FFmpeg-trac] #9160(ffmpeg:new): ffmpeg stuck at initialization

[FFmpeg]

#9160: ffmpeg stuck at initialization
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             Reporter:  Gyan        |                    Owner:  (none)
                 Type:  defect      |                   Status:  new
             Priority:  important   |                Component:  ffmpeg
              Version:  git-master  |               Resolution:
             Keywords:  regression  |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by Gregory Beauregard):

 For other people who run into encodes that won't work because of this bug
 I've found a few workarounds you can try in rough order of
 preference/difficulty:

 * Downgrade to the 4.3 branch
 * In some cases I've found inserting a noop vulkan hwupload/hwdownload can
 allow you to do your encode again, but make sure you don't use an actual
 vulkan filter because (unrelated) bugs can lead to frame reordering and
 video corruption. I've found this often works when I have this freeze on a
 video with a subtitle overlay.
 * You might try piping ffmpeg into itself to try to put the line with the
 -re in a separate instance. For example, do all your video filters in one
 ffmpeg.c instance (without -re) and send it to a nut rawvideo format, then
 pipe that into an ffmpeg.c instance with -re to do your actual encode. The
 idea is that if the freeze is related to any filters/seeking/overlays you
 can do that in an ffmpeg.c instance separate from the one that has -re on
 it.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9160#comment:10>
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