[mythtv-users] Mythfrontend failing to display subtitles for some type of file

[Paul Gardiner]

With logs at debug level, there are a few more entries that might be 
relevant, but still no errors:

2022-09-04 10:16:27.481270 I [1563/1563] CoreContext 
decoders/avformatdecoder.cpp:2085 (ScanStreams) - AFD: codec AC3 has 6 
channels
2022-09-04 10:16:27.481552 I [1563/1563] CoreContext 
decoders/avformatdecoder.cpp:2570 (OpenAVCodec) - AFD: Opened codec 
0x5560975cdf00, id(AC3) type(Audio)
2022-09-04 10:16:27.481648 I [1563/1563] CoreContext 
decoders/avformatdecoder.cpp:2570 (OpenAVCodec) - AFD: Opened codec 
0x556096fef140, id(Unknown Codec ID) type(Subtitle)
2022-09-04 10:16:27.481829 D [1563/1563] CoreContext 
decoders/avformatdecoder.cpp:1696 (ScanATSCCaptionStreams) - AFD: 
ScanATSCCaptionStreams() called with no PMT
2022-09-04 10:16:27.481835 I [1563/1563] CoreContext 
decoders/avformatdecoder.cpp:2485 (ScanStreams) - AFD: Using vaapi for 
video decoding
2022-09-04 10:16:27.481936 I [1563/1563] CoreContext 
decoders/avformatdecoder.cpp:2570 (OpenAVCodec) - AFD: Opened codec 
0x556096fef600, id(H265) type(Video)


2022-09-04 10:16:40.327125 D [1563/1563] CoreContext 
captions/subtitlescreen.cpp:2365 (myth_libass_log) - libass: Raster: 
FreeType 2.10.1
2022-09-04 10:16:40.328175 I [1563/1563] CoreContext 
captions/subtitlescreen.cpp:2365 (myth_libass_log) - libass: Shaper: 
FriBidi 0.19.6 (SIMPLE) HarfBuzz-ng 2.6.4 (COMPLEX)
2022-09-04 10:16:40.328179 D [1563/1563] CoreContext 
captions/subtitlescreen.cpp:2365 (myth_libass_log) - libass: Initialized
2022-09-04 10:16:40.347413 I [1563/1563] CoreContext 
captions/subtitlescreen.cpp:2365 (myth_libass_log) - libass: Using font 
provider fontconfig
2022-09-04 10:16:40.348132 D [1563/1563] CoreContext 
captions/subtitlescreen.cpp:2365 (myth_libass_log) - libass: Event: 
[Script Info]


2022-09-04 10:16:40.348146 D [1563/1563] CoreContext 
captions/subtitlescreen.cpp:2365 (myth_libass_log) - libass: Style 
format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, 
OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, 
ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, 
MarginL, MarginR, MarginV, Encoding
2022-09-04 10:16:40.348163 D [1563/1563] CoreContext 
captions/subtitlescreen.cpp:2365 (myth_libass_log) - libass: 
[0x556097659b10] Style: 
Default,Arial,16,&Hffffff,&Hffffff,&H0,&H0,0,0,0,0,100,100,0,0,1,1,0,2,10,10,10,0
2022-09-04 10:16:40.348174 D [1563/1563] CoreContext 
captions/subtitlescreen.cpp:2365 (myth_libass_log) - libass: Event 
format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, 
Effect, Text
2022-09-04 10:16:40.348815 D [1563/1563] CoreContext 
captions/subtitlescreen.cpp:2365 (myth_libass_log) - libass: Event: 
Dialogue: 0,0:10:14.08,0:10:15.62,Default,,0,0,0,,Gods be good.

2022-09-04 10:16:42.496040 D [1563/1563] CoreContext 
captions/subtitlescreen.cpp:2365 (myth_libass_log) - libass: Event: 
Dialogue: 0,0:10:16.25,0:10:17.79,Default,,0,0,0,,It's all right, ser.