Hello all,
my standalone player (Yakumo DVD Master DX4) has
problems playing certain videofiles from dvds I
authored with dvdauthor.
The sound plays for some seconds and stops then,
the picture is asynchronous and much too slow
(like a slideshow).
I multiplexed them with "mplex -f 8" without errors or warnings,
let the dvd structure create by dvdauthor, then mkisofs,
burn.
mpginfo tells me for such a file:
<->
warning: couldn't find any valid system header. I'm continuing anyway
bad.mpg
Mpeg 2 Program Stream File [Video/Audio]
Muxrate : 10.08 Mbps
Estimated Duration: 22:32.95s
Checking all time stamps (This may take a while.) ...
Time stamps jumped from 1358.458622 to 15.995522 at position
236800
Time stamps jumped from 2457.340033 to 52.749000 at position
1dee800
Time stamps jumped from 2355.393533 to 55.417900 at position
2010000
Time stamps jumped from 2130.388456 to 62.673667 at position
25cd800
Time line is interupted at 4 times.
That means at these points the time stamp is earlier than the previous
one.
You may have problems in joining and splitting this file, sorry.
Aspect ratio 4/3 (TV)
Interlaced, chroma format: 4:2:0
Video Format: PAL
Size [720 x 576] 25.00 fps 8.00 Mbps
Audio : Mpeg 1 layer 2
384 kbps 48000 Hz
Stereo, No emphasis
<->
The final dvd plays well on my old Cyberhome 505 and
any software dvd player i tried - but not the Yakumo.
The strange thing is that i have other files, produced
exactly the same way, which play on the Yakumo well too,
even on the same dvd.
Here is the mpginfo output of a file which works:
<->
warning: couldn't find any valid system header. I'm continuing anyway
good.mpg
Mpeg 2 Program Stream File [Video/Audio]
Muxrate : 10.08 Mbps
Estimated Duration: 01:22:15.50s
Checking all time stamps (This may take a while.) ...
Time stamps jumped from 25352.619278 to 109.369700 at position
4cd9000
Time stamps jumped from 29210.233989 to 116.540944 at position
52a7800
Time stamps jumped from 1351.714433 to 288.350267 at position
e354800
Time stamps jumped from 37821.826067 to 352.829756 at position
12076000
Time stamps jumped from 72019.705644 to 353.167844 at position
120d2000
Time line is interupted at 5 times.
That means at these points the time stamp is earlier than the previous
one.
You may have problems in joining and splitting this file, sorry.
Aspect ratio 4/3 (TV)
Interlaced, chroma format: 4:2:0
Video Format: PAL
Size [720 x 576] 25.00 fps 8.00 Mbps
Audio : Mpeg 1 layer 2
384 kbps 48000 Hz
Stereo, No emphasis
<->
The "estimated duration" seems to be completely wrong for
all the files. The good.mpg with est. dur. "01:22:15.50"
for instance has a playing time of about 6 and a half minutes.
My questions are:
How can i find out differences between the files which
work and the ones which do not work? I encoded and multi-
plexed them all the same way.
Should I worry about the complaints of mpginfo? And if
so: Is there any way to fix/rebuild the timestamps?
Mpginfo gives no warnings when it analyzes the demuxed
.m2v and .mp2 files. But after muxing them with mplex
the warnings come up again.
I already demuxed them with mpgdemux and remultiplexed
them again with mplex but it seems to make absolutely
no difference.
Thanks and greetings,
Leander
Here is the mplex output for a bad.mpg
# mplex -f 8 chunk-0.m2v chunk-0.mp2 -o chunk.mpg
INFO: [mplex] mplex version 1.6.2 (2.2.3 $Date: 2004/01/13 20:45:26
$)
INFO: [mplex] File chunk-0.m2v looks like an MPEG Video stream.
INFO: [mplex] File chunk-0.mp2 looks like an MPEG Audio stream.
INFO: [mplex] Video stream 0: profile 8 selected - ignoring
non-standard options!
INFO: [mplex] Found 1 audio streams and 1 video streams
INFO: [mplex] Selecting dvdauthor DVD output profile
INFO: [mplex] Multiplexing video program stream!
INFO: [mplex] Scanning for header info: Video stream e0 (chunk-0.m2v)
INFO: [mplex] VIDEO STREAM: e0
INFO: [mplex] Frame width : 720
INFO: [mplex] Frame height : 576
INFO: [mplex] Aspect ratio : 4:3 display
INFO: [mplex] Picture rate : 25.000 frames/sec
INFO: [mplex] Bit rate : 8000000 bits/sec
INFO: [mplex] Vbv buffer size : 229376 bytes
INFO: [mplex] CSPF : 0
INFO: [mplex] Scanning for header info: Audio stream c0 (chunk-0.mp2)
INFO: [mplex] MPEG AUDIO STREAM: c0
INFO: [mplex] Audio version : 1.0
INFO: [mplex] Layer : 2
INFO: [mplex] CRC checksums : yes
INFO: [mplex] Bit rate : 49152 bytes/sec (384 kbit/sec)
INFO: [mplex] Frequency : 48000 Hz
INFO: [mplex] Mode : 0 stereo
INFO: [mplex] Mode extension : 0
INFO: [mplex] Copyright bit : 1 copyright protected
INFO: [mplex] Original/Copy : 1 original
INFO: [mplex] Emphasis : 0 none
INFO: [mplex] SYSTEMS/PROGRAM stream:
INFO: [mplex] rough-guess multiplexed stream data rate : 8566496
INFO: [mplex] target data-rate specified : 10080000
INFO: [mplex] Setting specified specified data rate: 10080000
INFO: [mplex] Run-in Sectors = 89 Video delay = 13019 Audio delay =
16619
INFO: [mplex] New sequence commences...
INFO: [mplex] Video e0: buf= 237568 frame=000000 sector=00000000
INFO: [mplex] Audio c0: buf= 4096 frame=000000 sector=00000000
INFO: [mplex] Scanned to end AU 2524
INFO: [mplex] STREAM e0 completed @ frame 2524.
INFO: [mplex] STREAM c0 completed @ frame 4208.
INFO: [mplex] Multiplex completion at SCR=9101750.
INFO: [mplex] Video e0: buf= 237568 frame=002524 sector=00022423
INFO: [mplex] Audio c0: buf= 1792 frame=004208 sector=00002401
INFO: [mplex] VIDEO_STATISTICS: e0
INFO: [mplex] Video Stream length: 45275374 bytes
INFO: [mplex] Sequence headers: 169
INFO: [mplex] Sequence ends : 1
INFO: [mplex] No. Pictures : 2524
INFO: [mplex] No. Groups : 169
INFO: [mplex] No. I Frames : 169 avg. size 42136 bytes
INFO: [mplex] No. P Frames : 674 avg. size 31456 bytes
INFO: [mplex] No. B Frames : 1682 avg. size 10078 bytes
INFO: [mplex] Average bit-rate : 3586000 bits/sec
INFO: [mplex] Peak bit-rate : 6682800 bits/sec
INFO: [mplex] BUFFERING min 15 Buf max 220039
INFO: [mplex] AUDIO_STATISTICS: c0
INFO: [mplex] Audio stream length 4848768 bytes.
INFO: [mplex] Syncwords : 4209
INFO: [mplex] Frames : 4209 padded
INFO: [mplex] Frames : 0 unpadded
INFO: [mplex] BUFFERING min 15 Buf max 1163
INFO: [mplex] MUX STATUS: no under-runs detected.
-------------------------------------------------------
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