avvidenc: timestamp output buffers

Same approach as x264enc, with the one hour offset
16 jobs for master in 39 minutes and 28 seconds (queued for 6 seconds)
Status Job ID Name Coverage
  Preparation
passed #502543
gst indent

00:00:24

passed #502542
manifest

00:00:33

 
  Build
passed #502549
build cerbero android universal

00:19:37

passed #502550
build cerbero cross win32

00:07:54

passed #502551
build cerbero cross win64

00:05:59

passed #502548
build cerbero fedora x86_64

00:13:16

manual #502553
gst-ios-12.2 allowed to fail manual
build cerbero ios universal
passed #502552
gst-macos-10.14
build cerbero macos x86_64

00:06:49

passed #502544
build fedora x86_64

00:13:39

passed #502545
build nodebug fedora x86_64

00:13:27

passed #502546
build static fedora x86_64

00:17:56

passed #502547
build static nodebug fedora x86_64

00:17:51

 
  Test
passed #502554
check fedora

00:04:05

passed #502555
integration testsuites fedora

00:13:03

 
  Integrate
passed #502556
android universal examples

00:06:12

passed #502557
documentation

00:04:26