[FFmpeg-trac] #9166(undetermined:new): Concat File Referencing UNC Paths from Windows Broken by 4.3.2

[FFmpeg]

#9166: Concat File Referencing UNC Paths from Windows Broken by 4.3.2
----------------------------------+----------------------------------------
             Reporter:  barndawg  |                    Owner:
                 Type:  defect    |                   Status:  new
             Priority:  normal    |                Component:  undetermined
              Version:  4.3.2     |               Resolution:
             Keywords:  concat    |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
----------------------------------+----------------------------------------

Comment (by barndawg):

 This is also broken when run from `master`:

 {{{
 PS> Join-Videos -BaseName "H. M. S. Surprise"
 ffmpeg version N-101759-g7fc8ba9068 Copyright (c) 2000-2021 the FFmpeg
 developers
   built with gcc 9.3-win32 (GCC) 20200320
   configuration: --arch=x86_64 --target-os=mingw32 --cross-
 prefix=x86_64-w64-mingw32- --pkg-config=pkg-config --pkg-config-
 flags=--static --prefix=/home/barndawgie/repos/ffmpeg-cross-compile-
 script/ffmpeg_install --extra-libs='-lstdc++ -lbz2' --extra-cflags
 ='-static-libgcc -static-libstdc++ -static -O3 -s -I/home/barndawgie/repos
 /ffmpeg-cross-compile-script/ffmpeg_install/include' --extra-cxxflags
 ='-static-libgcc -static-libstdc++ -static -O3 -s' --extra-ldflags
 ='-static-libgcc -static-libstdc++ -static -O3 -s -L/home/barndawgie/repos
 /ffmpeg-cross-compile-script/ffmpeg_install/lib' --extra-ldexeflags
 ='-static-libgcc -static-libstdc++ -static -O3 -s' --extra-ldsoflags
 ='-static-libgcc -static-libstdc++ -static -O3 -s' --logfile=./config.log
 --enable-nonfree --enable-gpl --enable-libfdk-aac --enable-libx264
 --enable-libx265 --enable-libxml2 --enable-libopenjpeg --enable-libaom
 --enable-libmp3lame --enable-openssl --enable-libfreetype --enable-
 libfontconfig --enable-libfribidi --enable-libass
   libavutil      56. 72.100 / 56. 72.100
   libavcodec     58.135.100 / 58.135.100
   libavformat    58. 77.100 / 58. 77.100
   libavdevice    58. 14.100 / 58. 14.100
   libavfilter     7.111.100 /  7.111.100
   libswscale      5. 10.100 /  5. 10.100
   libswresample   3. 10.100 /  3. 10.100
   libpostproc    55. 10.100 / 55. 10.100
 [concat @ 00000265593436c0] Impossible to open
 'C:\\barndawgserver\JoshMusic\Raw Audiobooks\HMS Surprise\H. M. S.
 Surprise-Part01.mp3'
 C:\Users\BarnD\AppData\Local\Temp\tmp6463.tmp: No such file or directory
 Join-Videos: Video concatenation failed
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/9166#comment:3>
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