[mythtv-users] mythfrontend on Raspberry 3 B+ audio issues.

[Jim Abernathy]

On 11/13/18 10:11 PM, Mike Chinander wrote:
> Can you run ffprobe (or similar) on a PBS recording and on a recording 
> from another channel to see how the audio (and video) is different? 
> What are you playing the audio on (TV, receiver, etc.)?
>
my RP3 B+ is connected via HDMI to A/V receiver -> 4K TV

here's the ffprobe output from the PBS recording:

jim at mythbuntu:~$ ffprobe /mnt/md1/recorded-tv2/1041_20181031020000.ts
ffprobe version 3.4.4-0ubuntu0.18.04.1 Copyright (c) 2007-2018 the 
FFmpeg developers
   built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
   configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 
--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu 
--incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping 
--enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa 
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca 
--enable-libcdio --enable-libflite --enable-libfontconfig 
--enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm 
--enable-libmp3lame --enable-libmysofa --enable-libopenjpeg 
--enable-libopenmpt --enable-libopus --enable-libpulse 
--enable-librubberband --enable-librsvg --enable-libshine 
--enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh 
--enable-libtheora --enable-libtwolame --enable-libvorbis 
--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 
--enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi 
--enable-omx --enable-openal --enable-opengl --enable-sdl2 
--enable-libdc1394 --enable-libdrm --enable-libiec61883 
--enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 
--enable-shared
   libavutil      55. 78.100 / 55. 78.100
   libavcodec     57.107.100 / 57.107.100
   libavformat    57. 83.100 / 57. 83.100
   libavdevice    57. 10.100 / 57. 10.100
   libavfilter     6.107.100 /  6.107.100
   libavresample   3.  7.  0 /  3.  7.  0
   libswscale      4.  8.100 /  4.  8.100
   libswresample   2.  9.100 /  2.  9.100
   libpostproc    54.  7.100 / 54.  7.100
[mpegts @ 0x555c4fcfe080] PES packet size mismatch
     Last message repeated 1 times
Input #0, mpegts, from '/mnt/md1/recorded-tv2/1041_20181031020000.ts':
   Duration: 00:59:59.95, start: 37133.043156, bitrate: 5940 kb/s
   Program 1
     Stream #0:0[0x31]: Video: mpeg2video (Main) ([2][0][0][0] / 
0x0002), yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 
Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
     Stream #0:1[0x34]: Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 
stereo, fltp, 384 kb/s
     Stream #0:2[0x35]: Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 
stereo, fltp, 96 kb/s
jim at mythbuntu:~$

Now for the normal audio from another network:

jim at mythbuntu:~$ ffprobe /mnt/md0/recorded-tv1/1171_20181031020000.ts
ffprobe version 3.4.4-0ubuntu0.18.04.1 Copyright (c) 2007-2018 the 
FFmpeg developers
   built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
   configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 
--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu 
--incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping 
--enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa 
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca 
--enable-libcdio --enable-libflite --enable-libfontconfig 
--enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm 
--enable-libmp3lame --enable-libmysofa --enable-libopenjpeg 
--enable-libopenmpt --enable-libopus --enable-libpulse 
--enable-librubberband --enable-librsvg --enable-libshine 
--enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh 
--enable-libtheora --enable-libtwolame --enable-libvorbis 
--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 
--enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi 
--enable-omx --enable-openal --enable-opengl --enable-sdl2 
--enable-libdc1394 --enable-libdrm --enable-libiec61883 
--enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 
--enable-shared
   libavutil      55. 78.100 / 55. 78.100
   libavcodec     57.107.100 / 57.107.100
   libavformat    57. 83.100 / 57. 83.100
   libavdevice    57. 10.100 / 57. 10.100
   libavfilter     6.107.100 /  6.107.100
   libavresample   3.  7.  0 /  3.  7.  0
   libswscale      4.  8.100 /  4.  8.100
   libswresample   2.  9.100 /  2.  9.100
   libpostproc    54.  7.100 / 54.  7.100
[mpegts @ 0x5613f63e7080] PES packet size mismatch
     Last message repeated 1 times
Input #0, mpegts, from '/mnt/md0/recorded-tv1/1171_20181031020000.ts':
   Duration: 00:59:59.31, start: 34516.228000, bitrate: 12968 kb/s
   Program 1
     Stream #0:0[0x31]: Video: mpeg2video (Main) ([2][0][0][0] / 
0x0002), yuv420p(tv, top first), 1920x1080 [SAR 1:1 DAR 16:9], Closed 
Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
     Stream #0:1[0x34](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 
5.1(side), fltp, 384 kb/s
     Stream #0:2[0x35](spa): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 
stereo, fltp, 192 kb/s (visual impaired)
jim at mythbuntu:~$