[mythtv-users] MythTV 0.24-1.80 - No sound on HD TV recording

PJR pjrobinson at metronet.co.uk
Thu Apr 26 06:54:34 UTC 2012


On 26/04/12 00:35, Jean-Yves Avenard wrote:
> On 26 April 2012 06:57, PJR <pjrobinson at metronet.co.uk> wrote:
>> -----------------------------------------------
>> [h264 @ 0x8ff4580] decode_slice_header error
>> [h264 @ 0x8ff4580] non-existing PPS 0 referenced
>> [h264 @ 0x8ff4580] decode_slice_header error
>> [h264 @ 0x8ff4580] non-existing PPS 0 referenced
>> [h264 @ 0x8ff4580] decode_slice_header error
>> [h264 @ 0x8ff4580] no frame!
>> [h264 @ 0x8ff4580] mmco: unref short failure
>>    Last message repeated 1 times
>> [mpegts @ 0x8fef2a0] max_analyze_duration reached
>>
>> Seems stream 0 codec frame rate differs from container frame rate: 50.00
>> (50/1) -> 50.00 (50/1)
>> Input #0, mpegts, from '1052_20120421182000.mpg':
>>  Duration: 01:49:53.87, start: 39836.448300, bitrate: 5681 kb/s
>>  Program 1
>>    Stream #0.0[0x12d]: Video: h264 (High), yuv420p, 1440x1080 [PAR 4:3
>> DAR 16:9], 46.69 fps, 50 tbr, 90k tbn, 50 tbc
>>    Stream #0.1[0x12e](eng): Audio: aac_latm, 48000 Hz, stereo, s16
>>    Stream #0.2[0x132](eng): Audio: aac_latm, 48000 Hz, 2 channels (FC),
>> s16 (visual impaired)
>>    Stream #0.3[0x131](eng): Subtitle: dvbsub
>> At least one output file must be specified
>> -----------------------------------------------
>>
>> Does this indicate the file is corrupt?  As the file is a .mpg has it
>> been transcoded by myth if so is it a transcoding error?
>> My concern now is that this might happen again on other 5.1ch movies
>> recorded from HD TV.
> mythtv doesn't do anything to the stream received unless you configure to do so.
> That the audio is still aac_latm, I would guess that no process has
> been done on that file.
>
> If a recent version of ffmpeg doesn't play that file, you got no
> chance for myth to play it, nor anything other playback software for
> that matter. They pretty much all use ffmpeg internally.
>
> It could be that the file is corrupted, or that it's something broken in ffmpeg.
>
> if it was an issue you saw with other recording it would indicate the
> later, if it's a one-off, it's most certainly is the first.
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>
Ok understood.  I'll try and record another HD movie from the same
channel and see if it has the same problem, if not I guess it's a one
off error during the recording.


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