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Florian Zwoch
88aec3b43c
Instead of trying to open devices /dev/video<0-63> check /dev for all /dev/videoX devices that are existent in the tree. This allows finding devices with higher names than 63. E.g. /dev/video100 can now be found and opened which previously failed. _GNU_SOURCE #define is introduced for versionsort() which is a GNU extension. Fixes #4347.