Some mp3s no longer playable in mythmusic

[stuartm]

A very tiny percentage of mp3s in my collection no longer play in mythmusic, but play fine with mythffplay/mythavtest even when streamed from the storage group in the case of mythavtest.

2016-10-19 19:24:10.426339 E  RemoteAVFormatContext::Open: Failed to probe file: myth://Music@scafell/Alternative/Elbow/The Seldom Seen Kid/Elbow - The Loneliness Of A Tower Crane Driver.mp3
2016-10-19 19:24:10.426457 E  Decoder Error: Could not open url  (myth://Music@scafell/Alternative/Elbow/The Seldom Seen Kid/Elbow - The Loneliness Of A Tower Crane Driver.mp3)
2016-10-19 19:24:10.426832 N  Suspending idle timer
2016-10-19 19:24:10.445044 E  RemoteAVFormatContext::Open: Failed to probe file: myth://Music@scafell/Alternative/Calexico/Garden Ruin/Calexico - Panic Open String.mp3
2016-10-19 19:24:10.445184 E  Decoder Error: Could not open url  (myth://Music@scafell/Alternative/Calexico/Garden Ruin/Calexico - Panic Open String.mp3)

[paulh]

Try increasing the size of the probe buffer here:- ​https://github.com/MythTV/mythtv/blob/master/mythplugins/mythmusic/mythmusic/remoteavformatcontext.h#L56

The default is 64K which is should be plenty to probe all audio only formats but unfortunately we are seeing more files with the cover art in an MJPEG video stream which could mean the probe size will need to be adjusted to properly probe these files.

What does mythffprobe say about what streams are present?

[stuartm]

I doubled the probe buffer (for the sake of getting a quick answer), it resolves the issue for all the affected tracks I knew about.

Here's what mythffprobe has to say for a couple of them:

  Duration: 00:05:14.49, start: 0.025056, bitrate: 215 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 213 kb/s
    Metadata:
      encoder         : LAME3.97 
    Stream #0:1: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 600x519 [SAR 72:72 DAR 200:173], 90k tbr, 90k tbn, 90k tbc
    Metadata:
      title           : 600x600.jpg
      comment         : Cover (front)

  Duration: 00:04:09.78, start: 0.025056, bitrate: 190 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 188 kb/s
    Metadata:
      encoder         : LAME3.96r
    Side data:
      replaygain: track gain - -6.800000, track peak - unknown, album gain - unknown, album peak - unknown, 
    Stream #0:1: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 600x600 [SAR 72:72 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
    Metadata:
      comment         : Cover (front)

[Paul Harrison <pharrison@…>]

In e8d36304610f79ab6ec6042d0a251db83586f08f/mythtv:

Error: Processor CommitTicketReference failed

GIT backend not available

[Paul Harrison <pharrison@…>]

In 3930f5d13a7e0a4b6328a1b3032374752dfacbe4/mythtv:

Error: Processor CommitTicketReference failed

GIT backend not available