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. ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users