Hello,
I record DVB-S video with the vdr. The recording shall be watch via DVD-Player. KiSS DP-500 having an Ethernet port. However the recording is not MPEG conform. Therefore it has to be demultiplexed and some info has to be inserted to align audio and video. This is done via vdrsync.pl. Finally it has to be multiplexed. I use mplex. Here arise some problems. If I use -f 3 (generic mpeg2) the recording is blown up to about 5 (five) times of the original's size, since each frame is padded.
--DEBUG: [mplex] Padding : sector=01584198 --DEBUG: [mplex] Audio c0: buf= 1869 frame=087469 sector=00024979 --DEBUG: [mplex] Video e0: buf= 235520 frame=052481 sector=00378152 --DEBUG: [mplex] Padding : sector=01584199 --DEBUG: [mplex] Audio c0: buf= 1869 frame=087469 sector=00024979 --DEBUG: [mplex] Video e0: buf= 235520 frame=052481 sector=00378152 --DEBUG: [mplex] Padding : sector=01584200 --DEBUG: [mplex] Audio c0: buf= 1216 frame=087471 sector=00024980 --DEBUG: [mplex] Video e0: buf= 235520 frame=052481 sector=00378152 --DEBUG: [mplex] Padding : sector=01584200 INFO: [mplex] STREAM c0 completed @ frame 87471. --DEBUG: [mplex] Audio c0: buf= 1216 frame=087471 sector=00024980 --DEBUG: [mplex] Video e0: buf= 235520 frame=052481 sector=00378152 --DEBUG: [mplex] Padding : sector=01584200 INFO: [mplex] Multiplex completion at SCR=188946758. INFO: [mplex] Audio c0: buf= 1216 frame=087471 sector=00024980 INFO: [mplex] Video e0: buf= 235520 frame=052481 sector=00378152 INFO: [mplex] Padding : sector=01584200 INFO: [mplex] AUDIO_STATISTICS: c0 INFO: [mplex] Audio stream length 50383872 bytes. INFO: [mplex] Syncwords : 87472 INFO: [mplex] Frames : 87472 padded INFO: [mplex] Frames : 0 unpadded INFO: [mplex] BUFFERING min 18 Buf max 593 INFO: [mplex] VIDEO_STATISTICS: e0 INFO: [mplex] Video Stream length: 765438335 bytes INFO: [mplex] Sequence headers: 4374 INFO: [mplex] Sequence ends : 0 INFO: [mplex] No. Pictures : 52482 INFO: [mplex] No. Groups : 4374 INFO: [mplex] No. I Frames : 4374 avg. size 57053 bytes INFO: [mplex] No. P Frames : 13121 avg. size 19454 bytes INFO: [mplex] No. B Frames : 34988 avg. size 7448 bytes INFO: [mplex] Average bit-rate : 2916800 bits/sec INFO: [mplex] Peak bit-rate : 5790800 bits/sec INFO: [mplex] BUFFERING min 15 Buf max 132319 INFO: [mplex] MUX STATUS: no under-runs detected.
Furthermore, if I hit the "forward"-button, the player jumps to the start of the video. I can avoid this behavior by aborting mplex via CTRL-C.
As next I tried -f 8 and -f 9, the size is ok. However the jump button behaves strange. Usual the player shall jump 10s forward, it does but jumps than n seconds back. n depend on the play time, and is about 4s per minute.
Here is the info I obtain at start of mplex.
INFO: [mplex] mplex version 1.6.2 (2.2.3 $Date: 2004/01/13 20:45:26 $)
INFO: [mplex] File c0.mpa looks like an MPEG Audio stream.
INFO: [mplex] File e4.mpv looks like an MPEG Video stream.
INFO: [mplex] Video stream 0: profile 9 selected - ignoring non-standard options!
INFO: [mplex] Found 1 audio streams and 1 video streams
INFO: [mplex] Selecting generic DVD output profile (PROVISIONAL)
INFO: [mplex] Multiplexing video program stream!
INFO: [mplex] Scanning for header info: Audio stream c0 (c0.mpa)
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 : 24576 bytes/sec (192 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] Scanning for header info: Video stream e0 (e4.mpv)
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 : 15000000 bits/sec
INFO: [mplex] Vbv buffer size : 186368 bytes
INFO: [mplex] CSPF : 0
INFO: [mplex] SYSTEMS/PROGRAM stream:
INFO: [mplex] rough-guess multiplexed stream data rate : 15509344
INFO: [mplex] target data-rate specified : 10080000
++ WARN: [mplex] Target data rate lower than computed requirement!
++ WARN: [mplex] N.b. a 20% or so discrepancy in variable bit-rate
++ WARN: [mplex] streams is common and harmless provided no time-outs will occur
INFO: [mplex] Run-in Sectors = 89 Video delay = 13019 Audio delay = 23819
INFO: [mplex] New sequence commences...
INFO: [mplex] Audio c0: buf= 4096 frame=000000 sector=00000000
INFO: [mplex] Video e0: buf= 237568 frame=000000 sector=00000000
Bye Tom
------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
