[mythtv-commits] Ticket #12479: Mythtranscode HLS heavy distortion on Australian FTA recordings

[MythTV]

#12479: Mythtranscode HLS heavy distortion on Australian FTA recordings
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 Reporter:  William Wilhelm <will@…>  |          Owner:  jyavenard
     Type:  Bug Report - General      |         Status:  accepted
 Priority:  minor                     |      Milestone:  unknown
Component:  MythTV - General          |        Version:  Master Head
 Severity:  medium                    |     Resolution:
 Keywords:  HLS, AVF, mythtranscode   |  Ticket locked:  0
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Comment (by mailaccountfueralles@…):

 Same issue here in FIFO-Mode on german SD-Channels (720x576 and aspect
 ratio 4:3 or 16:9) after upgrading MythTV from 0.27 to 0.28. Video is
 distrorted, Audio seems to be ok.

 Output of SD transcode (aspect ratio 4:3)

 {{{
 ...
 2016-08-16 19:42:54.681995 N  Transcoding from
 /var/lib/mythtv/recordings/30487_20160809172000.ts to FIFO
 2016-08-16 19:42:54.805519 I  AFD: codec MP2 has 2 channels
 2016-08-16 19:42:54.805693 I  AFD: Opened codec 0x128fa20, id(MP2)
 type(Audio)
 2016-08-16 19:42:54.806031 I  AFD: codec MP2 has 2 channels
 2016-08-16 19:42:54.806132 I  AFD: Opened codec 0x11ca320, id(MP2)
 type(Audio)
 2016-08-16 19:42:54.806231 I  AFD: Opened codec 0x11cb9a0,
 id(DVB_SUBTITLE) type(Subtitle)
 2016-08-16 19:42:54.806248 I  AFD: codec AC3 has 2 channels
 2016-08-16 19:42:54.806698 I  AFD: Opened codec 0x11cc5c0, id(AC3)
 type(Audio)
 2016-08-16 19:42:54.810886 I  AFD: Opened codec 0x128eee0, id(MPEG2VIDEO)
 type(Video)
 2016-08-16 19:42:54.811379 N  AudioPlayer: Enabling Audio
 2016-08-16 19:42:54.834871 I  Honoring the cutlist while transcoding
 2016-08-16 19:42:54.835823 I  Cutlist        : 0-15744,37064-52482
 2016-08-16 19:42:54.835832 I  Original Length: 52482 frames
 2016-08-16 19:42:54.835840 I  New Length     : 21320 frames
 2016-08-16 19:42:54.870092 I  FifoVideoWidth 720
 2016-08-16 19:42:54.870114 I  FifoVideoHeight 576
 2016-08-16 19:42:54.870138 I  FifoVideoAspectRatio 1.77778
 2016-08-16 19:42:54.870158 I  FifoVideoFrameRate 25
 2016-08-16 19:42:54.870170 I  FifoAudioFormat ac3
 2016-08-16 19:42:54.870177 I  FifoAudioChannels 2
 2016-08-16 19:42:54.870189 I  FifoAudioSampleRate 48000
 2016-08-16 19:42:54.870352 I  Created video fifo: /tmp/mythar14789/vidout
 2016-08-16 19:42:54.871591 I  Created audio fifo: /tmp/mythar14789/audout
 2016-08-16 19:42:54.872006 I  Video 720x576 at 25fps Audio rate: 48000
 2016-08-16 19:42:54.872016 I  Created fifos. Waiting for connection.
 2016-08-16 19:42:54.872061 I  Dumping Video and Audio data to fifos
 2016-08-16 19:42:54.882977 I  Player(0): Fast-Forwarding from 0 to 15546
 2016-08-16 19:42:54.937520 I  Clean cut: discarding frame from 15546 to
 15744: vid 198 aud 380160
 2016-08-16 19:42:54.939073 I  Audio is 40ms behind video at # 1:
 auddelta=86143215, viddelta=86143175
 2016-08-16 19:42:54.939088 I  Dropping video frame
 2016-08-16 19:42:55.285101 I  Clean cut: end of video cut; audio frames
 left to cut 1920
 2016-08-16 19:42:55.289897 I  Clean cut: end of audio cut; vidio frames
 left to cut 0
 ...
 }}}


 Output of mythtranscode --version

 {{{
 MythTV Version : v0.28-47-g29d7067
 MythTV Branch : fixes/0.28
 Network Protocol : 88
 Library API : 0.28.20160309-1
 QT Version : 5.2.1
 Options compiled in:
  linux profile use_hidesyms using_alsa using_oss using_pulse
 using_pulseoutput using_backend using_bindings_perl using_bindings_python
 using_bindings_php using_crystalhd using_dvb using_firewire using_frontend
 using_hdhomerun using_vbox using_ceton using_hdpvr using_ivtv
 using_joystick_menu using_libcec using_libcrypto using_libdns_sd
 using_libfftw3 using_libxml2 using_lirc using_mheg using_opengl
 using_opengl_video using_opengl_themepainter using_qtwebkit using_qtscript
 using_qtdbus using_sdl using_taglib using_v4l2 using_x11 using_xrandr
 using_xv using_profiletype using_bindings_perl using_bindings_python
 using_bindings_php using_freetype2 using_mythtranscode using_opengl
 using_vaapi using_vdpau using_ffmpeg_threads using_mheg using_libass
 using_libxml2

 }}}

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Ticket URL: <https://code.mythtv.org/trac/ticket/12479#comment:11>
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