NextPVR Forums - No audio when transcoding HD channels

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SD channels work fine but no audio on BBC 1 HD, Channel 4 HD etc.
running 1.8.7 and latest ndroid.

transcode.log

Code:
:42.192    [Error][79]    FFmpeg version SVN-r18639, Copyright (c) 2000-2009 Fabrice Bellard, et al.

2013-04-03 22:32:42.194    [Error][79]      configuration: --enable-memalign-hack --enable-postproc --enable-gpl --enable-libfaac --enable-libfaad --enable-libgsm --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libx264 --enable-libxvid --disable-ffserver --enable-avisynth --enable-pthreads

2013-04-03 22:32:42.194    [Error][79]      libavutil     50. 3. 0 / 50. 3. 0

2013-04-03 22:32:42.194    [Error][79]      libavcodec    52.27. 0 / 52.27. 0

2013-04-03 22:32:42.194    [Error][79]      libavformat   52.32. 0 / 52.32. 0

2013-04-03 22:32:42.194    [Error][79]      libavdevice   52. 2. 0 / 52. 2. 0

2013-04-03 22:32:42.194    [Error][79]      libswscale     0. 7. 1 /  0. 7. 1

2013-04-03 22:32:42.194    [Error][79]      libpostproc   51. 2. 0 / 51. 2. 0

2013-04-03 22:32:42.194    [Error][79]      built on Apr 21 2009 13:44:38, gcc: 4.2.4 (TDM-1 for MinGW)

2013-04-03 22:32:42.194    [Error][79]    [NULL @ 0x2b14a70]non-existing SPS 0 referenced in buffering period

2013-04-03 22:32:42.194    [Error][79]    [NULL @ 0x2b14a70]non-existing PPS referenced

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]non-existing SPS 0 referenced in buffering period

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]B picture before any references, skipping

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]decode_slice_header error

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]B picture before any references, skipping

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]decode_slice_header error

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]B picture before any references, skipping

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]decode_slice_header error

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]B picture before any references, skipping

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]decode_slice_header error

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]B picture before any references, skipping

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]decode_slice_header error

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]B picture before any references, skipping

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]decode_slice_header error

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]no frame!

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]non-existing SPS 0 referenced in buffering period

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]non-existing PPS referenced

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]non-existing SPS 0 referenced in buffering period

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]B picture before any references, skipping

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]decode_slice_header error

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]B picture before any references, skipping

2013-04-03 22:32:42.194    [Error][79]    [h264 @ 0x2b14a70]decode_slice_header error

To be honest I wouldn't know where to start. Transcoding Live TV connects directly to the npvr web server and unfortunately I only have DVB-T cards in my npvr setup so have only ever tried SD. Not wanting to pass the buck but it seems this is going to come down to how the npvr web server uses ffmpeg.

ok, I'll play around with <TranscodeArgs> and see what happens (and report back if I have any joy).

what about all the live-tv files being left behind after viewing live tv via ndroid, is that you or npvr/newa?

My server is still running NPVR 2.5.5 so I'm not in a position to test transcoding... Sad

Alex

I'd start by upgrading from a ffmpeg from this decade. I think NextPVR comes with .6 and they are up to 1.2 now. Then try and get the transcoding arguments working from the command line.

Martin

Streaming the same channel via NEWA works fine (i.e. with audio) and nothing in the transcode.log file.

gEd Wrote:ok, I'll play around with <TranscodeArgs> and see what happens (and report back if I have any joy).

Thanks - that would be useful for other users.

gEd Wrote:what about all the live-tv files being left behind after viewing live tv via ndroid, is that you or npvr/newa?

All Live TV playback (raw or transcoded) is done by connecting to the npvr web server so any files left behind come down to npvr.

Also (for reference) if you specify transcode settings for Recordings then, again, the nDroid app will connect to the npvr web server although I'm not sure if it creates those sort of buffer files for recordings. If you set "No transcoding" for Recordings, the app will use the nDroid Service streaming code as it does for Videos and Music.

ACTCMS Wrote:My server is still running NPVR 2.5.5 so I'm not in a position to test transcoding...

Alex

Well you know what to do about that... Big Grin

mvallevand Wrote:I'd start by upgrading from a ffmpeg from this decade. I think NextPVR comes with .6 and they are up to 1.2 now. Then try and get the transcoding arguments working from the command line.

Martin

I tried the Apil 1 build (!) but that craps out straight away on HD or SD channel with nothing in the transcode.log. reverting back to the stock ffmpeg and SD works fine. (I checked ffmpeg would run without needing windows permissions to run)
I guess the supplied command line is incompatible with the latest version. I don't have time to investigate command line options just at the mo.

Does not te fact that NEWA streams the HD channel fine suggest that the parameters being passed to it from ndroid are not right?

Quote:My server is still running NPVR 2.5.5 so I'm not in a position to test transcoding...

bgowland Wrote:Well you know what to do about that...

Yeah I know... but it's been so stable for months and my test server is in need of some major surgery... Smile

Alex

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