flvmux: Fix scale of time values in warning message

9 jobs for <span class="ref-name">flvmux-msg</span> in 61 minutes and 31 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Preparation
passed #174243
gst indent

00:00:29

passed #174242
manifest

00:00:32

 
  Build
passed #174244
build fedora x86_64

00:04:10

 
  Test
passed #174283
check fedora

00:06:23

failed #174245
check fedora

00:04:50

 
  Full Builds
passed #174247
build cerbero android universal

00:24:27

passed #174248
build cerbero cross win32

00:10:28

passed #174249
build cerbero cross win64

00:09:13

passed #174246
build cerbero fedora x86_64

00:08:59