[mythtv] Air2PC / DVB audio playback fails in Mythtv - AC3 handling problem?

[Blammo [doh]]

Small is somewhat of a misnomer when it comes to DVB files, but here
is a short clip. I was on live, hit record, waited a few seconds, and
stopped the recording:

http://216.27.229.222/tmp/air2pc.sample.nuv.gz

Apologies, it is 30M, even GZ'd.


Here's what mplayer thinks it is, and plays it fine:

Playing air2pc.sample.nuv.
[file] File size is 35375645 bytes
STREAM: [file] air2pc.sample.nuv
STREAM: Description: File
STREAM: Author: Albeu
STREAM: Comment: based on the code from ??? (probably Arpi)
Checking for YUV4MPEG2
ASF_check: not ASF guid!
Checking for Nullsoft Streaming Video
Checking for NuppelVideo
Checking for REAL
Checking for SMJPEG
Searching demuxer type for filename air2pc.sample.nuv ext: .nuv
Checking for MOV
Checking for VIVO
header block 1 size: 0
Checking for PVA
Checking for MPEG-TS...
TRIED UP TO POSITION 71696, FOUND 47, packet_size= 0, SEEMS A TS? 0
Checking for LMLM4 Stream Format
Invalid packet in LMLM4 stream: ch=0 size=133858744
LMLM4 Stream Format not found
==> Found video stream: 0
==> Found audio stream: 128
MPEG Stream reached EOF
ds_fill_buffer: EOF reached (stream: video)  
MPEG-PES file format detected.
Searching for sequence header... OK!
VIDEO:  MPEG2  1280x720  (aspect 3)  59.940 fps  45000.0 kbps (5625.0 kbyte/s)
[V] filefmt:2  fourcc:0x10000002  size:1280x720  fps:59.94  ftime:=0.0167
get_path('sub/') -> '/root/.mplayer/sub/'
get_path('default.sub') -> '/root/.mplayer/default.sub'
==========================================================================
Opening audio decoder: [liba52] AC3 decoding with liba52
dec_audio: Allocating 3840 bytes for input buffer.
dec_audio: Allocating 6144 + 65536 = 71680 bytes for output buffer.
Using SSE optimized IMDCT transform
AC3: 2.0 (stereo)  48000 Hz  384.0 kbit/s
A52 flags before a52_frame: 0x2A
A52 flags after a52_frame: 0x2
Using MMX optimized resampler
AUDIO: 48000 Hz, 2 ch, 16 bit (0x10), ratio: 48000->192000 (384.0 kbit)
Selected audio codec: [a52] afm:liba52 (AC3-liba52)


I have not yet tried the other things suggested (going to TS / etc)
but I will tonight.



On Mon, 14 Feb 2005 02:01:45 -0500, Isaac Richards <ijr at case.edu> wrote:
> On Sunday 13 February 2005 02:34 pm, Blammo [doh] wrote:
> > Happy new owner of a Air2PC, recordings play back find in mplayer /
> > xine, but not in MythFrontend. I suspect it's not correctly
> > identifying the AC3 audio, which is why I only hear "glitch, glitch
> > glitch". Again, they play back fine in Mplayer. AC3 2.0.
> >
> > I've seen mentions of this in other threads, and wanted to bring it to
> > the forefront. Is this something one of the devs is working on? I'm
> > happy to lend any form of help / access etc to help resolve this
> > issue, since it makes watching HD recordings a multi-step process, and
> > not wife friendly. :)
> 
> If you don't provide a small sample recording, no one can do anything about
> it.
> 
> Isaac
> _______________________________________________
> mythtv-dev mailing list
> mythtv-dev at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
>