libav-tools is no longer available in Debian

[jonorthwash]

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package libav-tools is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'libav-tools' has no installation candidate

The install.sh script will need to be updated to take this into account.

[keggsmurph21]

Hm, we already require you to install ffmpeg, which itself depends on all the av* stuff we care about (I assume):

$ apt-cache depends ffmpeg
ffmpeg
 |Depends: libavcodec57
  Depends: libavcodec-extra57
  Depends: libavdevice57
 |Depends: libavfilter6
  Depends: libavfilter-extra6
  Depends: libavformat57
  Depends: libavresample3
  Depends: libavutil55
  Depends: libc6
  Depends: libpostproc54
  Depends: libsdl2-2.0-0
  Depends: libswresample2
  Depends: libswscale4
  Breaks: <libav-tools>
  Breaks: <qt-faststart>
  Suggests: ffmpeg-doc
  Replaces: <libav-tools>
  Replaces: <qt-faststart>

I think we can probably just remove the references to libav-tools.

[jonorthwash]

Huh, it even says ffmpeg replaces libav-tools. Do you know what it is that UltraTrace needs from there?

[keggsmurph21]

Haha I don't think we even need ffmpeg: https://github.com/SwatPhonLab/UltraTrace/pull/181/commits/d2393e31925ee1794dc9dbdbd35ac8848c683183 seems to work ok?

[qiyoulu]

ffprobe comes with ffmpeg (on Fedora, at least) and removing ffmpeg gives this error when running python3 -m ultratrace

/usr/local/lib/python3.11/site-packages/pydub-0.23.1-py3.11.egg/pydub/utils.py:193: RuntimeWarning: Couldn't find ffprobe or avprobe - defaulting to ffprobe, but may not work warn("Couldn't find ffprobe or avprobe - defaulting to ffprobe, but may not work", RuntimeWarning) ERROR: Unable to load audio file: '../ultrasound-data-example-master/20150629171639.flac' [Errno 2] No such file or directory: 'ffprobe'

[jonorthwash]

Yeah, ffmpeg is a dependency of pydub. What do we rely on pydub for again?

[jonorthwash]

Haha I don't think we even need ffmpeg: d2393e3 seems to work ok?

There's a difference between starting up successfully and actually doing things. Do you have access to data to test with, @keggsmurph21?