IPhone and iPad don’t play audio for certain videos

audioipadiphonevideo

Here's the metadata from a video file that does not work on iPad and iPhone. Does anything about the audio stick out at you?

avprobe version 0.8.17-4:0.8.17-0ubuntu0.12.04.1, Copyright (c) 2007-2014 the Libav developers
  built on Mar 16 2015 13:26:50 with gcc 4.6.3
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Introduction.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf54.2.100
  Duration: 00:07:54.14, start: 0.000000, bitrate: 1148 kb/s
    Stream #0.0(eng): Video: h264 (High), yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 924 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc
    Stream #0.1(eng): Audio: mp3, 44100 Hz, 2 channels, s16, 216 kb/s

Best Answer

Not at all - nothing in that metadata looks like it would be problematic.

  • MP3 support is quite good
  • h264 is one of the preferred codecs for iOS since quite some time.

You may have to check the correctness of the file or transcode it or get a more thorough error confpdition if ones like this fail to play on iOS.

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