[MPlayer-users] audio stutter with DTS in matroska?

[Niko Vettenranta]

On Nov 25, 2007 4:21 AM, Ulion <ulion2002 at gmail.com> wrote:

> 2007/11/25, Ulion <ulion2002 at gmail.com>:
> > 2007/11/24, Ulion <ulion2002 at gmail.com>:
> > > 2007/11/24, Ulion <ulion2002 at gmail.com>:
> > > > 2007/11/24, Niko Vettenranta <niko.vettenranta at gmail.com>:
> > > > > stuttering samples now hopefully uploaded, directory name is
> dts_samples
> > > > >
> > > > > I included four samples:
> > > > > one working DTS track that is created with dtscore from dts hd
> track
> > > > > three stuttering DTS tracks created from PCM, LPCM and TruHD
> tracks with
> > > > > eac3to and nero
> > > >
> > > > Can you descript how you get these three stuttering files detailly?
> > >
> >
> > Both three stuttering dts files passthrough without problem on my mac os
> x
> > with creative DDTS-100 receiver. So this could be a bug of ao_alsa or
> > a bug of alsa or alsalib.
> > Can you find any other player can passthrough the stuttering dts file
> > on your machine correctly?
> > And also need your mplayer's output messages when passthrough these
> > files, you should add '-v' to mplayer's cmdline to get verbose output
> > to help locate the problem.
>
> Try newest svn version of mplayer and you must on i386 platform with a
> old version of mplayer, it has bug when swap byte endian of last byte
> of dts packet.
>
>
> --
> Ulion
> _______________________________________________
> MPlayer-users mailing list
> MPlayer-users at mplayerhq.hu
> http://lists.mplayerhq.hu/mailman/listinfo/mplayer-users
>
It is now fixed! I installed the new rc2 version of mplayer-nogui from
here<http://packages.ubuntu.com/cgi-bin/download.pl?arch=i386&file=pool%2Fmultiverse%2Fm%2Fmplayer%2Fmplayer-nogui_1.0%7Erc2-0ubuntu1%7Egutsy1_i386.deb&md5sum=6e9c55a94ad70a8a367f9fae390d45ee&arch=i386&type=main>(mplayer-nogui_1.0~rc2-0ubuntu1~gutsy1_i386.deb)
to replace my current
mplayer that comes from regular Ubuntu repos and now all DTS tracks
passthrough nicely!

I took those mplayer's output messages (username edited) with the older
version, just so if someone happens to need them. Here's the output when
playing the working dts track:

MPlayer 2:1.0~rc1-0ubuntu13 (C) 2000-2006 MPlayer Team
CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ (Family: 15, Model: 75,
Stepping: 2)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
get_path('codecs.conf') -> '/home/xxx/.mplayer/codecs.conf'
Reading /home/xxx/.mplayer/codecs.conf: Can't open
'/home/xxx/.mplayer/codecs.conf':
No such file or directory
Reading /etc/mplayer/codecs.conf: Can't open '/etc/mplayer/codecs.conf': No
such file or directory
Using built-in default codecs.conf.
CommandLine: '-v' 'working_dts_with_dtscore.dts'
init_freetype
/home/xxx/.fonts/calibrib.ttf doesn't look like a bitmap font description,
ignoring.
Cannot load bitmap font: /home/xxx/.fonts/calibrib.ttf
Using MMX (with tiny bit MMX2) Optimized OnScreenDisplay
Using nanosleep() timing
get_path('input.conf') -> '/home/xxx/.mplayer/input.conf'
Can't open input config file /home/xxx.mplayer/input.conf: No such file or
directory
Parsing input config file /etc/mplayer/input.conf
Input config file /etc/mplayer/input.conf parsed: 67 binds
Setting up LIRC support...
get_path('working_dts_with_dtscore.dts.conf') -> '/home/xxx
/.mplayer/working_dts_with_dtscore.dts.conf'

Playing working_dts_with_dtscore.dts.
get_path('sub/') -> '/home/xxx/mplayer/sub/'
[file] File size is 12005604 bytes
STREAM: [file] working_dts_with_dtscore.dts
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 NuppelVideo
Checking for REAL
Checking for SMJPEG
Searching demuxer type for filename working_dts_with_dtscore.dts ext: .dts
Checking for Nullsoft Streaming Video
Checking for MOV
Checking for VIVO
AVS: avs_check_file - attempting to open file working_dts_with_dtscore.dts
AVS: File is too big, aborting...
Checking for PVA
Checking for MPEG-TS...
TRIED UP TO POSITION 70163, FOUND 47, packet_size= 0, SEEMS A TS? 0
Checking for LMLM4 Stream Format
Invalid packet in LMLM4 stream: ch=32766 size=-63144534
LMLM4 Stream Format not found
sync_mpeg_ps: seems to be MP3 stream...
MPEG Stream reached EOF
ds_fill_buffer: EOF reached (stream: video)
MPEG packet stats: p100: 0  p101: 1 p1B6: 0 p12x: 0 sli: 1 a: 0 b: 1 c: 0
idr: 0 sps: 0 pps: 0 PES: 0  MP3: 101, synced: 0
Not MPEG System Stream format... (maybe Transport Stream?)
sync_mpeg_ps: seems to be MP3 stream...
MPEG Stream reached EOF
ds_fill_buffer: EOF reached (stream: video)
MPEG packet stats: p100: 0  p101: 1 p1B6: 0 p12x: 0 sli: 1 a: 0 b: 1 c: 0
idr: 0 sps: 0 pps: 0 PES: 0  MP3: 101, synced: 0
Not MPEG System Stream format... (maybe Transport Stream?)
==> Found video stream: 0
ds_fill_buffer: EOF reached (stream: video)
LAVF_check: raw dts
libavformat file format detected.
Stream with high frequencies VQ coding
==> Found audio stream: 0
======= WAVE Format =======
Format Tag: 8193 (0x2001)
Channels: 2
Samplerate: 48000
avg byte/sec: 0
Block align: 0
bits/sample: 0
cbSize: 0
==========================================================================
LAVF: 1 audio and 0 video streams found
LAVF: build 3278336
==========================================================================
Forced audio codec: hwac3
Forced audio codec: hwdts
Opening audio decoder: [hwac3] AC3/DTS pass-through S/PDIF
dec_audio: Allocating 8192 bytes for input buffer.
dec_audio: Allocating 16384 + 65536 = 81920 bytes for output buffer.
No accelerated IMDCT transform found
hwac3: switched to DTS, 1536000 bps, 48000 Hz
AUDIO: 48000 Hz, 2 ch, ac3, 1536.0 kbit/100.00% (ratio: 192000->192000)
Selected audio codec: [hwdts] afm: hwac3 (DTS through S/PDIF)
==========================================================================
Building audio filter chain for 48000Hz/2ch/ac3 -> 0Hz/0ch/??...
[libaf] Adding filter dummy
[dummy] Was reinitialized: 48000Hz/2ch/ac3
[dummy] Was reinitialized: 48000Hz/2ch/ac3
alsa-init: requested format: 48000 Hz, 2 channels, 100
alsa-init: using ALSA 1.0.14a
alsa-spdif-init: playing AC3, 2 channels
alsa-init: using device iec958
alsa-init: pcm opend in blocking mode
alsa-init: chunksize set to 1024
alsa-init: fragcount=16
alsa-init: got buffersize=65536
alsa-init: got period size 1024
alsa: 48000 Hz/2 channels/4 bpf/65536 bytes buffer/Signed 16 bit Little
Endian
AO: [alsa] 48000Hz 2ch ac3 (1 bytes per sample)
AO: Description: ALSA-0.9.x-1.x audio output
AO: Author: Alex Beregszaszi, Zsolt Barat <joy at streamminister.de>
AO: Comment: under developement
Building audio filter chain for 48000Hz/2ch/ac3 -> 48000Hz/2ch/ac3...
[dummy] Was reinitialized: 48000Hz/2ch/ac3
[dummy] Was reinitialized: 48000Hz/2ch/ac3
Video: no video
Freeing 0 unused video chunks.
Starting playback...
Uninit audio filters...
[libaf] Removing filter dummy
Uninit audio: hwac3
alsa-uninit: pcm closed
vo: x11 uninit called but X11 not inited..

Exiting... (Quit)



And here is the non-working output:

MPlayer 2:1.0~rc1-0ubuntu13 (C) 2000-2006 MPlayer Team
CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ (Family: 15, Model: 75,
Stepping: 2)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
get_path('codecs.conf') -> '/home/xxx/.mplayer/codecs.conf'
Reading /home/xxx/.mplayer/codecs.conf: Can't open
'/home/xxx/.mplayer/codecs.conf':
No such file or directory
Reading /etc/mplayer/codecs.conf: Can't open '/etc/mplayer/codecs.conf': No
such file or directory
Using built-in default codecs.conf.
CommandLine: '-v' 'stuttering_dts_lpcm.dts'
init_freetype
/home/xxx/.fonts/calibrib.ttf doesn't look like a bitmap font description,
ignoring.
Cannot load bitmap font: /home/xxx/.fonts/calibrib.ttf
Using MMX (with tiny bit MMX2) Optimized OnScreenDisplay
Using nanosleep() timing
get_path('input.conf') -> '/home/xxx/.mplayer/input.conf'
Can't open input config file /home/xxx/.mplayer/input.conf: No such file or
directory
Parsing input config file /etc/mplayer/input.conf
Input config file /etc/mplayer/input.conf parsed: 67 binds
Setting up LIRC support...
get_path('stuttering_dts_lpcm.dts.conf') -> '/home/xxx
/.mplayer/stuttering_dts_lpcm.dts.conf'

Playing stuttering_dts_lpcm.dts.
get_path('sub/') -> '/home/xxx/.mplayer/sub/'
[file] File size is 19888440 bytes
STREAM: [file] stuttering_dts_lpcm.dts
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 NuppelVideo
Checking for REAL
Checking for SMJPEG
Searching demuxer type for filename stuttering_dts_lpcm.dts ext: .dts
Checking for Nullsoft Streaming Video
Checking for MOV
Checking for VIVO
AVS: avs_check_file - attempting to open file stuttering_dts_lpcm.dts
AVS: File is too big, aborting...
Checking for PVA
Checking for MPEG-TS...
TRIED UP TO POSITION 68185, FOUND 47, packet_size= 0, SEEMS A TS? 0
Checking for LMLM4 Stream Format
Invalid packet in LMLM4 stream: ch=32766 size=-63144518
LMLM4 Stream Format not found
sync_mpeg_ps: seems to be ES/PES stream...
MPEG Stream reached EOF
ds_fill_buffer: EOF reached (stream: video)
MPEG packet stats: p100: 838  p101: 185 p1B6: 0 p12x: 39 sli: 275 a: 14 b: 3
c: 0 idr: 31 sps: 0 pps: 9 PES: 30  MP3: 5217, synced: 0
sync_mpeg_ps: seems to be ES/PES stream...
MPEG Stream reached EOF
ds_fill_buffer: EOF reached (stream: video)
MPEG packet stats: p100: 838  p101: 185 p1B6: 0 p12x: 39 sli: 275 a: 14 b: 3
c: 0 idr: 31 sps: 0 pps: 9 PES: 30  MP3: 5217, synced: 0
==> Found video stream: 0
ds_fill_buffer: EOF reached (stream: video)
LAVF_check: raw dts
libavformat file format detected.
Stream with high frequencies VQ coding
==> Found audio stream: 0
======= WAVE Format =======
Format Tag: 8193 (0x2001)
Channels: 2
Samplerate: 48000
avg byte/sec: 0
Block align: 0
bits/sample: 0
cbSize: 0
==========================================================================
LAVF: 1 audio and 0 video streams found
LAVF: build 3278336
==========================================================================
Forced audio codec: hwac3
Forced audio codec: hwdts
Opening audio decoder: [hwac3] AC3/DTS pass-through S/PDIF
dec_audio: Allocating 8192 bytes for input buffer.
dec_audio: Allocating 16384 + 65536 = 81920 bytes for output buffer.
No accelerated IMDCT transform found
hwac3: switched to DTS, 1536000 bps, 48000 Hz
AUDIO: 48000 Hz, 2 ch, ac3, 1536.0 kbit/100.00% (ratio: 192000->192000)
Selected audio codec: [hwdts] afm: hwac3 (DTS through S/PDIF)
==========================================================================
Building audio filter chain for 48000Hz/2ch/ac3 -> 0Hz/0ch/??...
[libaf] Adding filter dummy
[dummy] Was reinitialized: 48000Hz/2ch/ac3
[dummy] Was reinitialized: 48000Hz/2ch/ac3
alsa-init: requested format: 48000 Hz, 2 channels, 100
alsa-init: using ALSA 1.0.14a
alsa-spdif-init: playing AC3, 2 channels
alsa-init: using device iec958
alsa-init: pcm opend in blocking mode
alsa-init: chunksize set to 1024
alsa-init: fragcount=16
alsa-init: got buffersize=65536
alsa-init: got period size 1024
alsa: 48000 Hz/2 channels/4 bpf/65536 bytes buffer/Signed 16 bit Little
Endian
AO: [alsa] 48000Hz 2ch ac3 (1 bytes per sample)
AO: Description: ALSA-0.9.x-1.x audio output
AO: Author: Alex Beregszaszi, Zsolt Barat <joy at streamminister.de>
AO: Comment: under developement
Building audio filter chain for 48000Hz/2ch/ac3 -> 48000Hz/2ch/ac3...
[dummy] Was reinitialized: 48000Hz/2ch/ac3
[dummy] Was reinitialized: 48000Hz/2ch/ac3
Video: no video
Freeing 0 unused video chunks.
Starting playback...
Uninit audio filters...
[libaf] Removing filter dummy
Uninit audio: hwac3
alsa-uninit: pcm closed
vo: x11 uninit called but X11 not inited..

Exiting... (Quit)

At first I was a little worried that this would have been a bug somewhere in
alsa, because you were able to passthrough those DTS tracks in os x and for
me they worked fine in windows xp, just my htpc running ubuntu and mythtv
could passthrough them to my receiver. But luckily it is now fixed and all
DTS tracks passthrough beautifully! Thank you so much!