Annotation of multiplexer/iso13818ts.1, revision 1.17
1.1 oskar 1: .\" Man page for iso13818ts
2: .\"
1.16 oskar 3: .\" Copyright (C) GPL 2001, Convergence Integrated Media GmbH
1.17 ! oskar 4: .\" Copyright (C) GPL 2004, Oskar Schirmer
1.1 oskar 5: .\"
1.17 ! oskar 6: .TH iso13818ts 1 "January 23rd, 2004" "1.0.1" "Multiplexer"
1.1 oskar 7: .SH NAME
8: iso13818ts \- multiplexer for ISO 13818 transport streams
9: .SH SYNOPSIS
10: iso13818ts [COMMAND...]
11: .SH DESCRIPTION
12: Generates an ISO 13818-1 conforming transport stream from multiple
13: input streams.
14: The result is sent to \fIstdout\fR,
15: the input streams are read from explicitely opened files.
16: All of the following commands may also be fed to \fIstdin\fR during
17: operation by omitting the leading hyphen (e.g. \fBQ\fR) or
18: double-hyphen (e.g. \fBquit\fR).
19: .TP
20: \fB\-\-help\fR
21: Display this help.
22: .TP
23: \fB\-V\fR, \fB\-\-version\fR
24: Output version information.
25: .TP
26: \fB\-Q\fR, \fB\-\-quit\fR
27: Quit this program.
28: .TP
29: \fB\-v\fR, \fB\-\-verbose\fR [\fIlevel\fR]
30: Verbose mode, \fIlevel\fR = 0..6, default is 2 (providing warnings
31: concerning data errors), initial verbosity is 1 (providing only
32: program errors).
33: .TP
34: \fB\-p\fR, \fB\-\-pes\fR \fIfile\fR \fItarget_program\fR
35: Open a PES input \fIfile\fR,
36: output the contained stream as \fItarget_program\fR (range 0x0001..0xFFFF).
37: .TP
38: \fB\-p\fR, \fB\-\-pes\fR \fIfile\fR \fItarget_program\fR \fItarget_stream_id\fR
39: Open a PES input \fIfile\fR,
40: output the contained stream in \fItarget_program\fR (range 0x0001..0xFFFF)
41: with \fItarget_stream_id\fR (recommended range 0xBD..0xFE).
42: The \fIfile\fR may be specified as \fB=\fR to denote
43: the last previously mentioned file.
44: .TP
45: \fB\-P\fR, \fB\-\-ps\fR \fIfile\fR \fItarget_program\fR
46: Open a PS input \fIfile\fR,
47: output the contained program as \fItarget_program\fR (range 0x0001..0xFFFF).
48: .TP
49: \fB\-P\fR, \fB\-\-ps\fR \fIfile\fR \fItarget_program\fR \fIsource_stream_id\fR [\fItarget_stream_id\fR]
50: Open a PS input \fIfile\fR,
51: extract the stream with \fIsource_stream_id\fR (range 0x00..0xFF)
52: and output that stream in \fItarget_program\fR (range 0x0001..0xFFFF)
53: with \fItarget_stream_id\fR (recommended range 0xBD..0xFE).
54: If no \fItarget_stream_id\fR is given, \fIsource_stream_id\fR is used instead.
55: The \fIfile\fR may be specified as \fB=\fR to denote
56: the last previously mentioned file.
57: .TP
58: \fB\-T\fR, \fB\-\-ts\fR \fIfile\fR
59: Open a TS input \fIfile\fR,
60: extract all programs from it and output them.
61: Note, that additional SI data is not propagated,
62: see command \fB\-\-si\fR for further information.
63: .TP
64: \fB\-T\fR, \fB\-\-ts\fR \fIfile\fR \fIsource_program\fR [\fItarget_program\fR]
65: Open a TS input \fIfile\fR,
66: extract the program \fIsource_program\fR (range 0x0001..0xFFFF)
67: and output that program as \fItarget_program\fR (range 0x0001..0xFFFF).
68: If no \fItarget_program\fR is given,
69: don't change the \fIsource_program\fR number.
70: The \fIfile\fR may be specified as \fB=\fR to denote
71: the last previously mentioned file.
72: .TP
73: \fB\-T\fR, \fB\-\-ts\fR \fIfile\fR \fIsource_program\fR \fItarget_program\fR \fIsource_stream_id\fR [\fItarget_stream_id\fR]
74: Open a TS input \fIfile\fR,
75: extract the stream with \fIsource_stream_id\fR (range 0x00..0xFF)
76: from the program \fIsource_program\fR (range 0x0001..0xFFFF)
77: and output that stream as \fItarget_stream_id\fR (recommended range 0xBD..0xFE)
78: in program \fItarget_program\fR (range 0x0001..0xFFFF).
79: If no \fItarget_stream_id\fR is given, use \fIsource_stream_id\fR instead.
80: The \fIfile\fR may be specified as \fB=\fR to denote
81: the last previously mentioned file.
82: .TP
1.11 oskar 83: \fB\-T\fR, \fB\-\-ts\fR \fIfile\fR 0 \fItarget_program\fR \fIsource_stream_id\fR [\fItarget_stream_id\fR]
84: As before, but extract a stream with \fIsource_stream_id\fR (range 0x00..0xFF)
85: from a transport stream with broken or missing PAT/PMT information.
86: The stream is opened only, if there is \fBnot\fR any entry in the
87: tables for that stream.
88: Note, that if there is more than one stream with the given
89: \fIsource_stream_id\fR,
90: only one matching stream will be opened, and
91: the choice is not deterministic.
92: .TP
1.1 oskar 93: \fB\-c\fR, \fB\-\-close\fR \fIfile\fR
94: Close input \fIfile\fR, as if eof is reached.
95: In combination with \fB\-\-repeat\fR this causes the next repeatition
96: to start immediately.
97: Note, that the input data file is cut of as is, i.e. no attempt
1.15 oskar 98: is made to close the file on a clean audio or video frame boundary.
1.1 oskar 99: .TP
100: \fB\-a\fR, \fB\-\-append\fR \fIfile1\fR \fIfile2\fR [\fInum\fR]
101: Earmark another \fIfile2\fR to be opened as soon as \fIfile1\fR
102: comes to its end.
103: The appended \fIfile2\fR is foreseen to be repeated \fInum\fR
104: times, default is 1 (see \fB\-\-repeat\fR).
105: Both files must contain the same type of data,
106: as the data of both files is chained without considering clean
107: transition of audio or video sequences.
108: The \fIfile1\fR may be specified as \fB=\fR to denote
109: the last previously mentioned file.
110: .TP
111: \fB\-f\fR, \fB\-\-file\fR \fIreference_number\fR \fIfile_name\fR
112: The positive \fIreference_number\fR is associated with a \fIfile_name\fR.
113: For all following commands, the \fIreference_number\fR may be
114: used instead of the \fIfile_name\fR. This allows better control
115: over file handles, as the same file may be addressed via different
116: \fIreference_number\fRs.
117: .TP
118: \fB\-x\fR, \fB\-\-crop\fR \fItarget_program\fR [\fItarget_stream_id\fR]
119: Delete a stream given by \fItarget_stream_id\fR,
120: or a complete program given by \fItarget_program\fR
121: from the output.
1.13 oskar 122: The corresponding input file(s) will be closed, if not needed otherwise.
1.1 oskar 123: .TP
124: \fB\-r\fR, \fB\-\-repeat\fR \fIfile\fR \fInum\fR
125: Set the repeatition counter for \fIfile\fR to \fInum\fR
126: (or to infinite if \fInum\fR=0).
127: The file will be reset as soon as eof is reached
128: (or it is closed by the command \fB\-\-close\fR).
129: Note, that the file will be reset without considering clean transition
130: of audio or video sequences at the restart point.
131: The \fIfile\fR may be specified as \fB=\fR to denote
132: the last previously mentioned file.
133: .TP
134: \fB\-R\fR, \fB\-\-reopen\fR
135: This command shall precede one of the commands that open a new file
136: (i.e. \fB\-\-pes\fR, \fB\-\-ps\fR or \fB\-\-ts\fR must follow
137: \fIon the same line\fR).
138: The next file will be opened with a new file handle,
139: regardless of whether the same file is yet open or not.
140: .TP
141: \fB\-\-si\fR \fIfile\fR [\fIlower_bound\fR \fIupper_bound\fR]
142: In a TS \fIfile\fR, all TS pakets with PID in the range
143: from \fIlower_bound\fR to \fIupper_bound\fR
1.9 oskar 144: (possible range 0x0001..0x1FFE, recommended range 0x10..0x1F)
1.1 oskar 145: inclusive are handled as SI pakets (according to ETSI EN 300 468).
146: These pakets are bypassed and promoted to the output without further handling.
147: If no further data from the \fIfile\fR is in use,
148: the SI pakets are promoted \fIgreedy\fR, i.e. without any timing or delay.
149: If \fIlower_bound\fR and \fIupper_bound\fR are omitted,
150: the special handling of SI pakets is turned off for the given \fIfile\fR.
1.5 oskar 151: \fBNOTE, that the \fIfile\fB must be opened with \-\-ts before!\fR
1.1 oskar 152: The \fIfile\fR may be specified as \fB=\fR to denote
153: the last previously mentioned file.
154: .TP
1.9 oskar 155: \fB\-\-sipid\fR \fItarget_program\fR [\fIpid\fR [\fIstream_type\fR]]
156: Manually add or delete entries to the target PMT for the given
157: \fItarget_program\fR.
158: To add an entry, all three parameters must be provided.
159: If an entry for the given \fIpid\fR (range 0x0001..0x1FFE) does exist,
160: the new \fIstream_type\fR (range 0x00..0xFF) is set
161: and all descriptors are cleared.
162: If no \fIstream_type\fR is given, a corresponding entry
163: in the PMT is deleted,
164: if it was added thru \fB\-\-sipid\fR earlier.
165: If no \fIpid\fR and no \fIstream_type\fR is given, all
166: entries for the \fItarget_program\fR in the PMT are deleted,
167: which have been added thru \fB\-\-sipid\fR earlier.
168: Note, that regular entries, i.e. those which are generated
169: automatically instead of using \fB\-\-sipid\fR,
170: cannot be changed.
171: Note, that entries added through \fB\-\-sipid\fR are
172: solely entries in the PMT, but there is not any corresponding
173: data stream created.
174: \fB\-\-sipid\fR is meant to be used in conjunction
175: with the \fB\-\-si\fR command, which in turn causes
176: data to arise in the target stream without listing it
177: in the PMT.
178: .TP
1.10 oskar 179: \fB\-\-descr\fR \fItarget_program\fR [\fIdescr_tag\fR [\fIdescr_length\fR \fIdata\fR...]]
180: Add, inhibit or delete in the PMT section a descriptor,
181: that does \fBnot\fR belong to a specific stream.
182: To add a descriptor, all parameters must be given,
183: \fIdescr_tag\fR (range 0x00..0xFF),
184: \fIdescr_length\fR (range 1..255),
185: and the appropriate amount of bytes given as \fIdata\fR (range 0x00..0xFF).
186: To inhibit any descriptor with a given \fIdescr_tag\fR,
187: \fIdescr_length\fR is set to \fB0\fR and no \fIdata\fR is given.
188: This causes matching descriptors from input streams to
189: be discarded instead of being copied to the target stream.
190: To delete the manual setting of a descriptor,
191: \fIdescr_length\fR is omitted. This causes descriptors
192: with matching \fIdescr_tag\fR to be passed from input to
193: the target stream.
194: To delete all manual settings for a \fItarget_program\fR,
195: that do \fBnot\fR belong to a specific stream,
196: the \fIdescr_tag\fR is omitted, too.
197: Note, that \fB\-\-descr\fR never modifies descriptors,
198: that belong to a specific stream.
199: To modify these, use the command \fB\-\-sdescr\fR or \fB\-\-pdescr\fR.
200: .TP
201: \fB\-\-sdescr\fR [\fItarget_program\fR [\fIstream_id\fR [\fIdescr_tag\fR [\fIdescr_length\fR \fIdata\fR...]]]]
202: Add, inhibit or delete in the PMT section a descriptor,
203: that does belong to a specific stream.
204: To add a descriptor, all parameters must be given,
205: \fIstream_id\fR (recommended range 0xBD..0xFE),
206: \fIdescr_tag\fR (range 0x00..0xFF),
207: \fIdescr_length\fR (range 1..255),
208: and the appropriate amount of bytes given as \fIdata\fR (range 0x00..0xFF).
209: To inhibit any descriptor with a given \fIdescr_tag\fR,
210: \fIdescr_length\fR is set to \fB0\fR and no \fIdata\fR is given.
211: This causes matching descriptors from the corresponding input streams to
212: be discarded instead of being copied to the target stream.
213: To delete the manual setting of a descriptor,
214: \fIdescr_length\fR is omitted. This causes descriptors
215: with matching \fIdescr_tag\fR to be passed from input to
216: the target stream.
217: To delete all manual settings for a \fIstream_id\fR in
218: the \fItarget_program\fR,
219: the \fIdescr_tag\fR is omitted, too.
220: To delete all manual settings for all streams \fBand\fR those
221: that do not belong to a specific stream,
222: the \fIstream_id\fR is omitted, too.
223: Finally, to delete all manual settings in all programs,
224: all parameters are omitted.
225: .TP
226: \fB\-\-pdescr\fR [\fItarget_program\fR [\fIpid\fR [\fIdescr_tag\fR [\fIdescr_length\fR \fIdata\fR...]]]]
227: Add, inhibit or delete in the PMT section a descriptor,
228: that does belong to a specific stream.
229: To add a descriptor, all parameters must be given,
230: \fIpid\fR (range 0x0001..0x1FFE),
231: \fIdescr_tag\fR (range 0x00..0xFF),
232: \fIdescr_length\fR (range 1..255),
233: and the appropriate amount of bytes given as \fIdata\fR (range 0x00..0xFF).
234: To inhibit any descriptor with a given \fIdescr_tag\fR,
235: \fIdescr_length\fR is set to \fB0\fR and no \fIdata\fR is given.
236: This causes matching descriptors from the corresponding input streams to
237: be discarded instead of being copied to the target stream.
238: To delete the manual setting of a descriptor,
239: \fIdescr_length\fR is omitted. This causes descriptors
240: with matching \fIdescr_tag\fR to be passed from input to
241: the target stream.
242: To delete all manual settings for a \fIpid\fR in
243: the \fItarget_program\fR,
244: the \fIdescr_tag\fR is omitted, too.
245: To delete all manual settings for all streams \fBand\fR those
246: that do not belong to a specific stream,
247: the \fIpid\fR is omitted, too.
248: Finally, to delete all manual settings in all programs,
249: all parameters are omitted.
250: Note, that, in contrast to \fB\-\-descr\fR and \fB\-\-sdescr\fR,
251: with \fB\-\-pdescr\fR it is possible to set
252: descriptors for PMT entries, that have been added using \fB\-\-sipid\fR.
253: .TP
1.1 oskar 254: \fB\-I\fR, \fB\-\-ident\fR \fItransport_stream_id\fR
255: Set the output \fItransport_stream_id\fR (range 0x0000..0xFFFF).
256: .TP
257: \fB\-B\fR, \fB\-\-busy\fR [\fInum\fR]
1.14 oskar 258: Set the busy flag to \fInum\fR (range 0..1, default is 1, initial is 0).
1.1 oskar 259: Whenever the program has no more data to handle and
260: the busy flag is not set, it stops.
261: .TP
262: \fB\-\-timed\fR
263: Force delay timing, even if solely disk files are in use.
264: If not so, if delay is to be awaited while processing regular files,
265: the delay is skipped instead and timing information in the resulting
266: file is adjusted accordingly.
267: .TP
268: \fB\-F\fR, \fB\-\-fpsi\fR \fItime\fR
269: Set the PSI table frequency to \fItime\fR msec
270: (or to infinite if \fItime\fR=0, initial value is infinite).
271: The PAT and PMT will be generated at more or less the given
272: frequency, even if the tables did not change.
273: In any case, the next tables will be generated immediately.
274: .TP
1.7 oskar 275: \fB\-\-trigin\fR \fItime\fR
276: Set the input buffer trigger timing to \fItime\fR.
277: For any input stream, that is newly opened
278: (or has to be retriggered, e.g. due to intermediate emptiness),
279: the buffer is triggered for promotion to the splice unit
280: with a delay of \fItime\fR msec compared to the time
281: of data entrance into the buffer.
282: For any stream yet triggered the timing is not changed
283: unless retriggering takes place.
284: Not affected by this value are the other trigger conditions,
285: mainly a certain buffer fullness
286: and cotriggering with a corresponding stream that is triggered.
287: .TP
288: \fB\-\-trigout\fR \fItime\fR
289: Set the output buffer trigger timing to \fItime\fR.
290: As the output buffer is triggered for promotion to \fIstdout\fR,
291: this is done with a delay of \fItime\fR msec compared to the time
292: of data entrance into the buffer.
293: The new timing is only valid if set before the first triggering
294: of the output buffer,
295: or if retriggering takes place, e.g. due to intermediate emptiness.
296: Not affected by this value is the trigger condition
297: of a certain buffer fullness.
298: .TP
1.4 oskar 299: \fB\-C\fR, \fB\-\-config\fR \fInum\fR
300: Order output configuration of target stream with \fInum\fR=1,
301: switch off with \fInum\fR=0.
1.10 oskar 302: Set \fInum\fR=2, to get information about descriptors, too.
1.4 oskar 303: When switched on, the configuration is printed each time it changes.
304: First, the number of programs is printed,
305: then for each program one line of description and
306: for each stream within that program another line is printed.
1.10 oskar 307: When \fInum\fR=2, then for each descriptor there is printed one more line.
1.4 oskar 308: The following values are compiled:
309: .RS
310: .TP
311: \fIprogs\fR
312: Number of programs in target stream.
313: .TP
314: \fIprog\fR
315: Program number within target stream.
316: .TP
317: \fIpmt\fR
318: PMT PID for the program.
319: .TP
320: \fIpcr\fR
321: PCR PID for the program.
322: .TP
323: \fIstreams\fR
324: Number of streams in the program.
1.9 oskar 325: A number in parantheses may be added that denotes how many of these
326: streams are not PES data streams, but have been added by use of the
327: \fB\-\-sipid\fR option to the PMT.
1.4 oskar 328: .TP
329: \fIstream\fR
330: Stream PID.
331: .TP
1.9 oskar 332: \fItype\fR
333: Stream type (according to ISO 13818-1 table 2-29).
334: .TP
1.4 oskar 335: \fIsid\fR
336: PES stream ID.
337: .TP
338: \fIfile\fR
339: Source file contents type (PES=0, PS=1, TS=2).
340: .TP
341: \fIsource\fR
342: Stream index in source file (SID for PS, PID for TS).
343: .TP
344: \fInum\fR
345: Source file reference number (-1 if none).
346: .TP
347: \fIname\fR
348: Source file name.
1.10 oskar 349: .TP
350: \fIdescr\fR
351: Descriptor tag.
352: .TP
353: \fIlen\fR
354: Descriptor length, number of data bytes in the descriptor.
355: .TP
356: \fIdata\fR
357: Descriptor data, bytewise.
1.4 oskar 358: .RE
359: .TP
1.2 oskar 360: \fB\-S\fR, \fB\-\-statistics\fR \fItime\fR
361: Order output load statistics to be generated about every
362: \fItime\fR msec.
1.4 oskar 363: Switch off with \fItime\fR=0.
364: The statistics are written to \fIstderr\fR linewise,
365: the following values are calculated:
1.2 oskar 366: .RS
367: .TP
368: \fInow\fR
369: Internal clock in msec.
370: .TP
371: \fIout\fR
1.7 oskar 372: Number of bytes written to stdout since last statistics,
373: and number of write operations needed.
1.2 oskar 374: .TP
375: \fIbuf\fR
1.7 oskar 376: Number of bytes in the output buffers (lower and upper bound).
1.2 oskar 377: .TP
378: \fItime\fR
1.7 oskar 379: Time in msec, for how long the contents of the
380: output buffers should suffice (lower and upper bound).
381: .TP
382: \fIburst\fR
383: Size of write burst, i.e. number of bytes prepared to
384: be written in a single write operation (lower and upper bound).
1.2 oskar 385: .RE
386: .TP
1.1 oskar 387: \fB\-\-badtiming\fR
388: In conjunction with a program stream originating from a DVB-s
389: digital TV receiver card, You might want to automatically
1.17 ! oskar 390: correct broken PCR values produced by that card, to
! 391: avoid discontinuities in the output.
! 392: .TP
! 393: \fB\-\-conservativepids\fR [\fInum\fR]
! 394: Though PIDs are only of significance to internally link
! 395: elementary streams in a transport stream, for test purposes
! 396: it might be desired to keep PIDs across multiplexing
! 397: (range 0..1, default is 1, initial is 0).
1.1 oskar 398: .SH OVERVIEW
399: The multiplexer is designed to run uninterrupted and
400: be controlled via \fIstdin\fR and \fIstderr\fR.
1.8 oskar 401: It is designed to process data in real time,
402: i.e. if the processing is not performed fast
403: enough (e.g. because of low processor performance),
404: errors in the resulting data may occur, namely
405: concerning the timing.
1.9 oskar 406: The multiplexer may be invoked interactively with
1.8 oskar 407: the streams to process given as command line options
408: or with the commands to be processed typed into
409: \fIstdin\fR during operation.
1.1 oskar 410: The latter type of usage is also designed for use
411: with an user interface front-end, that may
412: translate some GUI input to iso13818ts commands
413: and filter its responses to be presented to the user
414: as appropriate.
415: .P
416: Three different types of input are supported:
417: Paketized elementary streams (PES),
418: Program streams (PS),
419: Transport streams (TS).
420: .P
421: Numeric parameters may be given in decimal (e.g. 31)
422: or in hex (e.g. 0x1F).
423: .SH DETAILS
424: The output file or device does not change throughout the
425: time the program runs. The input files, however, may vary.
426: Also the contents of an input file may vary, but not its
427: type. E.g., a file opened as program stream must contain
428: valid program stream data up to its end (and including
429: any files that are appended to this file with \fB\-\-append\fR).
430: .P
431: All basic PSI is evaluated contiguously, and changes in
432: the configuration (changing PID, etc.) are taken into
1.3 frankro 433: account and tracked. Thus a stream should not get lost
1.1 oskar 434: simply because its PID is changed in the middle of the
435: broadcast.
436: .P
437: When remultiplexing a transport stream, the user cannot
438: rely on the original PIDs to be the same in the output stream.
439: Usually output PIDs are different from input PIDs.
440: This is because all basic PSI is composed from scratch for the
441: output stream, with exception of the descriptors.
442: These are not evaluated but only copied and reused
443: as appropriate.
444: .P
445: For each output program one stream within this program
446: must contain PCR time stamps. The strategy in selecting
447: which stream shall carry the PCR is, first see if there
448: is one input stream that contains PCR, if none is found,
449: use the stream for which data packets are found first.
450: Note, that for a simple mono TV program this is not
451: necessarily the video stream.
1.9 oskar 452: .P
453: When using the command \fB\-\-si\fR,
454: PID collisions may occur with source stream PIDs
455: as well as with target stream PIDs.
456: .br
457: For source collisions, data streams win,
458: i.e. if a packet is encountered,
459: that matches the PAT and PMT description of the input file
460: as well as the range given by \fB\-\-si\fR,
461: the latter match is ignored and the packet is
462: processed as PES data packet
463: (or PMT packet, if appropriate).
464: .br
465: For target collisions, the \fB\-\-si\fR range wins,
466: i.e. the attempt is made not to assign PIDs to
467: target data streams (or PMT streams),
468: that are covered by a range given by \fB\-\-si\fR.
469: If this attempt fails, e.g. because the full range
470: was given with \fI\-\-si 0x0010 0x1FFE\fR,
471: the potential collision is accepted, because there
472: is no easy algorithm to get around it.
473: Instead, the user should avoid covering the full range
474: with \fB\-\-si\fR and preferredly only state those
475: PIDs, which actually will contain SI packets.
476: .P
477: Note, that no collision check is done for PIDs,
478: that are given with the \fB\-\-sipid\fR command.
479: This is because these PIDs are assumed to be
480: covered by a corresponding \fB\-\-si\fR.
1.1 oskar 481: .SH EXAMPLES
482: To convert a program stream file x.PS to a transport stream file x.TS,
483: with program number 42, transport stream id 23
484: and PAT and PMT generated about every half second:
485: .IP
486: $ iso13818ts --fpsi 500 --ident 23 --ps x.PS 42 > x.TS
487: .PP
488: If the program stream doesn't contain correct PSI,
489: the single streams may be extracted one by one. Assuming
490: one video stream (0xE0) and mono audio (0xC0):
491: .IP
1.7 oskar 492: $ iso13818ts --fpsi 500 --ident 23 --ps x.PS 42 0xE0 --ps = 42 0xC0 > x.TS
1.1 oskar 493: .PP
494: To bundle two streams originating from video devices and
495: send them out to a streaming device, e.g.:
496: .IP
497: $ iso13818ts -F 500 -P /dev/video0 0x7300 -P /dev/video1 0x7301 > /dev/xdvb0
498: .PP
499: To remultiplex a transport stream containing two TV programs
500: with program numbers 4711 and 4712, with the audio streams (0xC0)
501: of the TV programs exchanged:
502: .IP
503: $ iso13818ts -F 500 --file 1 /dev/rdvb0 --ts 1 4711 4711 0xE0 --ts 1 4712 4712 0xE0 --ts 1 4711 4712 0xC0 --ts 1 4712 4711 0xC0 > /dev/xdvb0
504: .PP
505: To invoke the multiplexer for interactive use, it must
506: be put in all-time-busy-mode. Subsequently, commands can
507: be fed to \fIstdin\fR, e.g. to do the same as with the
508: first example:
509: .IP
510: $ iso13818ts --busy > x.TS
511: .br
512: fpsi 500 ident 23
513: .br
514: ps x.PS 42
515: .PP
516: This instance of the multiplexer will not cease when the
517: end of file in x.PS is reached. To stop the multiplexer,
518: either \fBquit\fR or \fBbusy 0\fR may be typed to \fIstdin\fR.
519: .P
520: To output a movie repeatedly (e.g. seven times):
521: .IP
522: $ iso13818ts -F 500 --ps thepurpleroseofcairo.PS 777 --repeat = 7 > /dev/xdvb0
523: .PP
524: Note, that if during the movie is processed, the command
525: .IP
526: close thepurpleroseofcairo.PS
527: .PP
528: is issued, and supposed it is not yet processed the seventh time,
529: it is not closed, but restarted immediately.
530: .P
531: To concatenate two movies and output them in sequence:
532: .IP
533: $ iso13818ts -F 500 --ps rambo1.PS 789 --append = rambo2.PS > /dev/xdvb0
534: .PP
535: Note, that a file can only be appended to a file, that is
536: yet in use (i.e. being processed). Thus, it is not possible
537: to append a third movie (rambo3.PS) from within the command
538: line. Instead, the processing of the second movie must be
539: awaited, and then the following command can be fed to \fIstdin\fR:
540: .IP
541: append rambo2.PS rambo3.PS
542: .PP
543: To add data from a DSMCC carousel to the output, a DSMCC
544: carousel generator must be started seperately. The carousel
545: must generate the DSMCC data as a series of transport
546: stream packets that contain private sections. The PIDs used by
1.7 oskar 547: the carousel must be known (e.g. 0x10..0x1F). Supposed use of
548: the DSMCC carousel data provider \fIrepeatts\fR:
1.1 oskar 549: .IP
550: $ mkfifo dsmcc_pipe
551: .br
1.7 oskar 552: $ repeatts 8000 2000 dsmcc_data.TS > dsmcc_pipe &
1.1 oskar 553: .br
554: $ iso13818ts -F 500 --busy --ts dsmcc_pipe --si = 0x10 0x1F > /dev/xdvb0
555: .br
556: ps x.PS 42
557: .br
558: ps y.PS 43
559: .br
560: \&...
561: .PP
1.12 oskar 562: If the source is a transport stream with broken or
563: missing PSI (i.e. PAT/PMT), and if further it can
564: be assumed, that there is only one program to be found
565: in the stream, then the \fIsource program number\fR
566: can be specified as \fB0\fR. With the following
567: example, one video and one audio stream are extracted
568: (the first one found, if more than one exist)
569: and output as \fItarget program number\fR 42:
570: .IP
571: $ iso13818ts -F 500 -T deficient.TS 0 42 0xE0 -T = 0 42 0xC0 > complete.TS
572: .PP
1.1 oskar 573: .SH "KNOWN PROBLEMS"
574: The program might not work in conjunction with device drivers
575: that do not deliver or accept data unless a first read or write
576: is done on the device. E.g., for a MPEG video data source, that
577: does not produce output without being triggered by being read
578: from, this program will await the readability of the first
579: data infinitely. On the other hand it is obvious that the driver
580: should not encode data as long as there is no application that
581: will read this data.
582: One possibly solution to this dilemma is to patch such a driver
583: to interpret the \fIpoll\fR command as an order for data, thus
584: triggering the read mechanisms. Analogous considerations hold
585: for polling the output device and writing to it.
586: .P
587: Paketized elementary streams do not necessarily contain
588: usable time stamps, so when multiplexing raw PES, streams
589: belonging together may be out of sync. This is especially
590: noteworthy in case streams shall be demultiplexed and then
591: again multiplexed in some way. Results will always be better
592: when this remultiplexing takes place entirely within the
1.3 frankro 593: multiplexer, because that way timing information won't get lost.
1.1 oskar 594: .SH BUGS
1.9 oskar 595: End of action sometimes is not detected correctly, which
596: causes the multiplexer to hang.
597: Nevertheless, it then can be stopped by the \fBquit\fR command.
1.10 oskar 598: .P
599: Changing configuration is not printed if the change
600: is solely a descriptor coming from a source file.
1.1 oskar 601: .SH "SEE ALSO"
1.6 oskar 602: .BR repeatts (1),
603: .BR iso13818ps (1),
1.1 oskar 604: .BR ISO\ 13818-1 ,
605: .BR ETSI\ EN\ 300\ 468 .
606: .SH AUTHOR
1.15 oskar 607: Oskar Schirmer (oskar@scara.com).
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