Re: [Mjpeg-users] How to use the -S option of mplex?
On Sunday 05 Jan 2003 2:25 pm, you wrote: On Sun, Jan 05, 2003 at 12:49:12PM +0100, Andrew Stevens wrote: Sounds like your using an older version. There was a bug where the size for -f 8 was effectively hard-wired to 2GB. This is certainly fixed in the development version and I think I also merged in the (1 line) fix into the 1.6.1 stable release. Well, no, mplex gives me: mjpegtools mplex version 1.6.1 Usage: mplex [params] -o output filename pattern input file... Prior to that, I was using version 1.6.0 with same result. O.k. the fix you want is that in mplex/multplexor.cc The line after case MPEG_FORMAT_DVD : max_segment_size = 2000*1024*1024; should actually read: if( max_segment_size == 0 ) max_segment_size = 2000*1024*1024; I think the cause of the Problem is fairly obvious when you see the above ;-) There should be a 1.6.2 release with bug-fixed and updated mplex and mpeg2enc out pretty shortly that does include the fix. Andrew PS If all you're interested in is spliting the file over mutliple CD's for storage then simply using the split utility to split the output files at 2048 byte boundaries will work just fine. E.g. cat bigfiles.*.mpg | split -b 780m - littlefiles. for f in littlefiles.* do mv $f $f.mpg done N.b. this will *not* work for (S)VCD but there mpeg2enc/mplex will handle the splitting for you correctly. Andrew --- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] How to use the -S option of mplex?
On Sun, 5 Jan 2003, Gregoire Favre wrote: On Sun, Jan 05, 2003 at 12:49:12PM +0100, Andrew Stevens wrote: Sounds like your using an older version. There was a bug where the size for -f 8 was effectively hard-wired to 2GB. This is certainly fixed in the development version and I think I also merged in the (1 line) fix into the 1.6.1 stable release. Well, no, mplex gives me: mjpegtools mplex version 1.6.1 Usage: mplex [params] -o output filename pattern input file... Prior to that, I was using version 1.6.0 with same result. Thank you for your answer ;-) Please keep CC to me as I am not on this ml!!! Grégoire Here is what I did to mplex/multplex.cc to get -S working.. (this patch is for 1.6.0, but its is essentially a 1 line change easily applied by hand on other versions if needed..) --- multplex.cc.old Mon Apr 29 12:30:56 2002 +++ multplex.cc Sun Nov 24 13:35:59 2002 @@ -271,7 +271,9 @@ timestamp_iframe_only = true; video_buffers_iframe_only = true; vbr = true; -opt_max_segment_size = 2000*1024*1024; +// opt_max_segment_size = 2000*1024*1024; +// changed to activate the -S option +if(opt_max_segment_size = 0) opt_max_segment_size = 2000*1024*1024; opt_multifile_segment = true; break; Selva --- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] How to use the -S option of mplex?
On Sun, Jan 05, 2003 at 07:32:40AM +0100, Bernhard Praschinger wrote: Good morming ;-) mplex -f 8 -S 400 -o name%d.mpg 001.mp* to mux files together, but I alwasy get 2 Gb files :-( That is a correct behavior of mplex. Any idea on how to use this option? man mplex Well, do you really think I haddn't? I am too stupid to understand how to use the -S option: -S|--max-segment-size num This option specifies the maximum size of output files in MBytes (2^10). The default is 2000 Mbytes (splitting output before 2G limits can hit). When the limit is reached a new file is started. So what's wrong with my -S 400? I am a little bit disapointed by this answer :-( Please CC to me as I am not in this ml, thank you very much, Grégoire http://ulima.unil.ch/greg ICQ:16624071 mailto:[EMAIL PROTECTED] --- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] How to use the -S option of mplex?
On Saturday 04 Jan 2003 9:01 pm, Gregoire Favre wrote: Hello, I use this: mplex -f 8 -S 400 -o name%d.mpg 001.mp* to mux files together, but I alwasy get 2 Gb files :-( Any idea on how to use this option? Thank you very much and please CC to me as I am not on this ml!!! Grégoire Sounds like your using an older version. There was a bug where the size for -f 8 was effectively hard-wired to 2GB. This is certainly fixed in the development version and I think I also merged in the (1 line) fix into the 1.6.1 stable release. Andrew --- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] How to use the -S option of mplex?
On Sun, Jan 05, 2003 at 12:13:13PM +0100, Bernhard Praschinger wrote: With that information I cannot exactly tell. I know that it works on my machine with 100MB (I have no stream with more than 400 MB lying around). The only differnce I see with the information you reveal is that you do not specifie each stream. That might be a differnece. Try to specifie the audio and video stream: mplex -f 8 -S 400 audio.mp2 video.m2v -o dvd%d.mpg Well, I have tried exactly that: mplex -f 8 -S 400 /video2/001.mp2 -o dvd%d.mpg INFO: [mplex] mplex version 2.2.1 ($Date: 2002/02/04 19:06:14 $) INFO: [mplex] File /video2/001.mp2 looks like an MPEG Audio stream. INFO: [mplex] File /video2/001.mpv looks like an MPEG Video stream. INFO: [mplex] Found 1 video streams 1 MPEG audio streams and 0 AC3 streams INFO: [mplex] Selecting DVD output profile (INCOMEPLETE) INFO: [mplex] Scanning for header info: Video stream e0 (/video2/001.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: 7766400 bits/sec INFO: [mplex] Vbv buffer size : 229376 bytes INFO: [mplex] CSPF: 0 INFO: [mplex] Scanning for header info: Audio stream c0 (/video2/001.mp2) INFO: [mplex] AUDIO STREAM: INFO: [mplex] Audio version : 1.0 INFO: [mplex] Layer :3 INFO: [mplex] CRC checksums : yes INFO: [mplex] Bit rate :32768 bytes/sec (256 kbit/sec) INFO: [mplex] Frequency : 48000 Hz INFO: [mplex] Mode :0 stereo INFO: [mplex] Mode extension :0 INFO: [mplex] Copyright bit :0 no copyright INFO: [mplex] Original/Copy :0 copy INFO: [mplex] Emphasis :0 none INFO: [mplex] SYSTEMS/PROGRAM stream: INFO: [mplex] rough-guess multiplexed stream data rate: 8158800 INFO: [mplex] target data-rate specified : 1008 INFO: [mplex] Setting specified specified data rate: 1008 INFO: [mplex] Sectors = 89 Video delay = 13019 Audio delay = 13019 INFO: [mplex] New sequence commences... INFO: [mplex] Video e0: buf= 237568 frame=00 sector= INFO: [mplex] Audio c0: buf= 4096 frame=00 sector= INFO: [mplex] Scanned to end AU 147456 INFO: [mplex] STREAM e0 completed @ 147456. INFO: [mplex] STREAM c0 completed @ 245761. INFO: [mplex] Multiplex completion at SCR=530850523. INFO: [mplex] Video e0: buf= 193052 frame=147456 sector=01420140 INFO: [mplex] Audio c0: buf= 1792 frame=245761 sector=00093439 INFO: [mplex] VIDEO_STATISTICS: e0 INFO: [mplex] Video Stream length: 357844096 bytes INFO: [mplex] Sequence headers:12724 INFO: [mplex] Sequence ends :1 INFO: [mplex] No. Pictures: 147457 INFO: [mplex] No. Groups :12724 INFO: [mplex] No. I Frames:12724 avg. size 43477 bytes INFO: [mplex] No. P Frames:36429 avg. size 23466 bytes INFO: [mplex] No. B Frames:98304 avg. size 14797 bytes INFO: [mplex] No. D Frames:0 avg. size 0 bytes INFO: [mplex] Average bit-rate : 3882800 bits/sec INFO: [mplex] Peak bit-rate: 699 bits/sec INFO: [mplex] BUFFERING min 15 Buf max 134306 INFO: [mplex] AUDIO_STATISTICS: c0 INFO: [mplex] Audio stream length 188745216 bytes. INFO: [mplex] Syncwords : 245762 INFO: [mplex] Frames : 245762 padded INFO: [mplex] Frames :0 unpadded INFO: [mplex] BUFFERING min 15 Buf max 779 INFO: [mplex] INFO: [mplex] MUX STATUS: no under-runs detected. And the first files is 2.0Gb and the second 900Mb :-( For more help you need to give more information. Starting with the version of the mjpeg tools you use, the commands used, the filesizes. I use mjpeg 1.6.1, the command I alreday gives several times, the filesizes are a lots different from time to time, here: -rw-r--r--1 greg greg 181M Jan 5 12:19 /video2/001.mp2 -rw-r--r--1 greg greg 2.7G Jan 5 12:19 /video2/001.mpv And why you want to split a DVD stream into pices. I have the strange feeling that you are trying something not suitable or not allowed for DVD. Because, I use this to create a DVD: ifogen -o /video2/tmp/VIDEO_TS/VTS mpeg_files tocgen /video2/tmp/VIDEO_TS And if the mpeg files are smaller I got more chapters ;-) If you know other way to make DVD under linux, I would enjoy to know about that way, and I like to have some chapters in my DVD (made with recordings from VDR). Thank you very much for all help, and please keep CC to me as I am not on this ml ;-) Have a great day, Grégoire http://ulima.unil.ch/greg ICQ:16624071 mailto:[EMAIL PROTECTED]
