Thanks for the post.
I will endeavour to add the log below and a file that has caused problems is at:
https://we.tl/t-kPEDp9Sx32
As mentioned in OP, sometimes a file will play ok, sometimes not. I am using W10 Professional with 8mb Ram. I just wondered if it happens when something is putting on a high load as seen in Task Manager.
Hope I have done this ok.
-- logger module started --
main debug: VLC media player - 3.0.16 Vetinari
main debug: Copyright © 1996-2021 the VideoLAN team
main debug: revision 3.0.16-0-g5e70837d8d
main debug: configured with /home/jenkins/workspace/vlc-release/windows/vlc-release-win32-x86/extras/package/win32/../../../configure '--enable-update-check' '--enable-lua' '--enable-faad' '--enable-flac' '--enable-theora' '--enable-avcodec' '--enable-merge-ffmpeg' '--enable-dca' '--enable-mpc' '--enable-libass' '--enable-schroedinger' '--enable-realrtsp' '--enable-live555' '--enable-shout' '--enable-goom' '--enable-sse' '--enable-mmx' '--enable-libcddb' '--enable-zvbi' '--disable-telx' '--enable-nls' '--host=i686-w64-mingw32' '--with-contrib=../contrib/i686-w64-mingw32' '--with-breakpad=
https://win.crashes.videolan.org' '--enable-qt' '--enable-skins2' '--enable-dvdread' '--enable-caca' 'host_alias=i686-w64-mingw32' 'CFLAGS= ' 'CXXFLAGS= ' 'PKG_CONFIG=pkg-config' 'PKG_CONFIG_LIBDIR=/usr/i686-w64-mingw32/lib/pkgconfig:/usr/lib/i686-w64-mingw32/pkgconfig'
main debug: using multimedia timers as clock source
main debug: min period: 1 ms, max period: 1000000 ms
main debug: searching plug-in modules
main debug: loading plugins cache file C:\Program Files (x86)\VideoLAN\VLC\plugins\plugins.dat
main debug: recursively browsing `C:\Program Files (x86)\VideoLAN\VLC\plugins'
main debug: plug-ins loaded: 496 modules
main debug: opening config file (C:\Users\Uplander\AppData\Roaming\vlc\vlcrc)
main debug: looking for logger module matching "any": 2 candidates
file debug: opening logfile `C:\Users\Uplander\Documents\Uplander\IT, Cameras Etc\VLC\Log291121'
main debug: using logger module "file"
main debug: translation test: code is "C"
main debug: looking for keystore module matching "memory": 3 candidates
main debug: using keystore module "memory"
main debug: CPU has capabilities MMX MMXEXT SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 FPU
main debug: Creating an input for 'Media Library'
main debug: Input is a meta file: disabling unneeded options
main debug: using timeshift granularity of 50 MiB
main debug: using timeshift path: C:\Users\Uplander\AppData\Local\Temp
main debug: `file/directory:///C:/Users/Uplander/AppData/Roaming/vlc/ml.xspf' gives access `file' demux `directory' path `/C:/Users/Uplander/AppData/Roaming/vlc/ml.xspf'
main debug: creating demux: access='file' demux='directory' location='/C:/Users/Uplander/AppData/Roaming/vlc/ml.xspf' file='C:\Users\Uplander\AppData\Roaming\vlc\ml.xspf'
main debug: looking for access_demux module matching "file": 15 candidates
main debug: no access_demux modules matched
main debug: creating access: file:///C:/Users/Uplander/AppData/Roaming/vlc/ml.xspf
main debug: (path: C:\Users\Uplander\AppData\Roaming\vlc\ml.xspf)
main debug: looking for access module matching "file": 27 candidates
main debug: using access module "filesystem"
main debug: looking for stream_filter module matching "prefetch,cache_read": 24 candidates
cache_read debug: Using stream method for AStream*
cache_read debug: starting pre-buffering
cache_read debug: received first data after 0 ms
cache_read debug: pre-buffering done 304 bytes in 0s - 296875 KiB/s
main debug: using stream_filter module "cache_read"
main debug: looking for stream_filter module matching "any": 24 candidates
playlist debug: using XSPF playlist reader
main debug: using stream_filter module "playlist"
main debug: stream filter added to 036d2630
main debug: looking for stream_filter module matching "any": 24 candidates
main debug: no stream_filter modules matched
main debug: looking for stream_directory module matching "any": 1 candidates
main debug: no stream_directory modules matched
main debug: attachment of directory-extractor failed for file:///C:/Users/Uplander/AppData/Roaming/vlc/ml.xspf
main debug: looking for stream_filter module matching "record": 24 candidates
main debug: using stream_filter module "record"
main debug: creating demux: access='file' demux='directory' location='/C:/Users/Uplander/AppData/Roaming/vlc/ml.xspf' file='C:\Users\Uplander\AppData\Roaming\vlc\ml.xspf'
main debug: looking for demux