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Chapters are re-timecoded correctly in both cases (with and without file linking). Updated documentation about chapters.
This commit is contained in:
Moritz Bunkus
parent
b705914778
commit
5742bca3dc
@ -1,5 +1,7 @@
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2003-07-29 Moritz Bunkus <moritz@bunkus.org>
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* mkvextract: Support for extracting chapter information.
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* mkvmerge: Added support for simple chapter files (CHAPTER01=...,
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CHAPTER01NAME=Hello World etc).
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128
doc/mkvmerge.1
128
doc/mkvmerge.1
@ -32,6 +32,10 @@ Write to the file '\fIout\fR'.
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.TP
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\fB\-\-title\fR <\fItitle\fR>
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Sets the general title for the output file, e.g. the movie name.
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.TP
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\fB\-\-chapters <\fIfile\fR>
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Read chapter information from the \fIfile\fR. See the section about chapters
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below for details.
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.LP
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General output control (still global, advanced options):
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@ -407,6 +411,36 @@ in \fBmkvinfo\fR's output then please read the section about \fBDEFAULT
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VALUES\fR.
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.SH TRACK IDS
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.LP
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Some of the options for \fBmkvmerge\fR need a track ID to specify which track
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they should be applied to. Those track IDs are printed by the readers when
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demuxing the current input file, or if \fBmkvmerge\fR is called with the
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\fB\-\-identify\fR option. Track IDs are assigned like this:
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.TP
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*
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AVI files: The video track has the ID 0. All audio tracks get the ID 1, 2...
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.TP
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*
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AAC, AC3, MP3, SRT and WAV files: The one 'track' in that file gets the ID 0.
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.TP
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*
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Ogg/OGM files: The track's ID is its serial number as given in the Ogg stream
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header page.
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.TP
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*
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Matroska files: The track's ID is the track number as reported by \fBmkvinfo\fR
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or \fBmkvmerge \-\-identify\fR. It is \fBnot\fR the track UID.
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.LP
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The special track ID '-1' is a wildcard and applies the given switch to all
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tracks that are read from an input file. This was the bahviour of these
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switches prior to version 0.4.4.
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.LP
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The options that use the track IDs are: \fB\-\-atracks\fR, \fB\-\-vtracks\fR,
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\fB\-\-stracks\fR, \fB\-\-sync\fR, \fB\-\-default-track\fR, \fB\-\-cues\fR
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and \fB\-\-language\fR.
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.SH SUBTITLES
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.LP
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There are several text subtitle formats that can be embedded into Matroska.
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@ -437,10 +471,10 @@ markup is not supported correctly.
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Matroska supports file linking which simply says that a specific file is the
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predecessor or successsor of the current file. To be precise, it's not really
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the files that are linked but the Matroska segments. As most files will
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probably only put one Matroska segment into a file I simply say 'file linking'
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probably only contain one Matroska segment I simply say 'file linking'
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although 'segment linking' would be more appropriate.
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.LP
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Each segment is identified by a unique 128 bit wide segmend UID. This UID
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Each segment is identified by a unique 128 bit wide segment UID. This UID
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is automatically generated by \fBmkvmerge\fR. The linking is done primarily
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via putting the segment UIDs of the previous/next file into the segment
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header information. \fBmkvinfo(1)\fR prints these UIDs if it finds them.
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@ -470,36 +504,6 @@ with \'\fB\-\-link\-to\-next\fR\'. If splitting is not used then the one
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output file will be linked to both of the two UIDs.
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.SH TRACK IDS
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.LP
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Some of the options for \fBmkvmerge\fR need a track ID to specify which track
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they should be applied to. Those track IDs are printed by the readers when
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demuxing the current input file, or if \fBmkvmerge\fR is called with the
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\fB\-\-identify\fR option. Track IDs are assigned like this:
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.TP
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*
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AVI files: The video track has the ID 0. All audio tracks get the ID 1, 2...
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.TP
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*
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AAC, AC3, MP3, SRT and WAV files: The one 'track' in that file gets the ID 0.
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.TP
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*
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Ogg/OGM files: The track's ID is its serial number as given in the Ogg stream
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header page.
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.TP
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*
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Matroska files: The track's ID is the track number as reported by \fBmkvinfo\fR
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or \fBmkvmerge \-\-identify\fR. It is \fBnot\fR the track UID.
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.LP
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The special track ID '-1' is a wildcard and applies the given switch to all
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tracks that are read from an input file. This was the bahviour of these
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switches prior to version 0.4.4.
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.LP
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The options that use the track IDs are: \fB\-\-atracks\fR, \fB\-\-vtracks\fR,
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\fB\-\-stracks\fR, \fB\-\-sync\fR, \fB\-\-default-track\fR, \fB\-\-cues\fR
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and \fB\-\-language\fR.
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.SH DEFAULT VALUES
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.LP
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The Matroska specs say that some elements have a default value. Usually an
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@ -532,6 +536,47 @@ $ \fBmkvmerge -o output.mkv -A video.avi sound.ogg \-\-attachment\-description
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\-\-attach\-file really_cool_font.ttf
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.SH CHAPTERS
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.LP
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The Matroska chapter system is more powerful than the old known system used
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by OGMs. The full specs can be found at
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.URL http://cvs.corecodec.org/cgi-bin/viewcvs.cgi/*checkout*/matroska/doc/website/technical/specs/chapters/index.html
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.LP
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\fBmkvmerge\fR's chapter support is still a bit limited, though. At the moment
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it only supports reading chapter data in the same format that the OGM tools
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expect. It looks basically like this:
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.LP
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CHAPTER01=00:00:00.000
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.br
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CHAPTER01NAME=Intro
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.br
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CHAPTER02=00:02:30.000
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.br
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CHAPTER02NAME=Baby prepares to rock
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.br
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CHAPTER03=00:02:42.300
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.br
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CHAPTER03NAME=Baby rocks the house
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.LP
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\fBmkvmerge\fR will transform every pair or lines (CHAPTERxx and CHAPTERxxNAME)
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into one Matroska \fIChapterAtom\fR. It does not set any
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\fIChapterTrackNumber\fR which means that the chapters all apply to all
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tracks in the file.
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.LP
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When splitting files \fBmkvmerge\fR will correctly adjust the chapters as
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well. This means that each file only includes the chapter entries that
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apply to it, and that the timecodes will be offset to match the new timecodes
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of each output file.
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.LP
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Another shortcoming is that \fBmkvmerge\fR will silently discards chapters
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found in source files - e.g. when reading them from an OGM file or another
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Matroska file. You can use \fBmkvextract\fR to export chapters from another
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Matroska file and use the result with \fBmkvmerge\fR.
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.LP
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The upcoming version of \fBmkvmerge\fR will address most of the shortcomings
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mentioned above.
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.SH NOTES
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.LP
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What works:
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@ -579,22 +624,19 @@ taken from other OGM files.
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.TP
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*
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SSA/ASS subtitles from SSA/ASS files
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.TP
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*
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Simple chapters.
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.TP
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*
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Full tags support.
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.LP
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What not works:
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.TP
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*
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Manual audio synchronization for PCM sound (who needs it anyway?)
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.LP
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Planned functionality:
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.TP
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*
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support for other subtitle formats
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.TP
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*
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chapter information
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.TP
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*
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a lot of other stuff, like tags, user information etc.
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.SH AUTHOR
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.I mkvmerge
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was written by Moritz Bunkus <moritz@bunkus.org>.
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@ -103,7 +103,7 @@ static bool probe_simple_chapters(mm_text_io_c *in) {
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// CHAPTER01NAME=Hallo Welt
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static KaxChapters *parse_simple_chapters(mm_text_io_c *in, int64_t min_tc,
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int64_t max_tc) {
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int64_t max_tc, int64_t offset) {
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KaxChapters *chaps;
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KaxEditionEntry *edition;
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KaxChapterAtom *atom;
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@ -119,6 +119,8 @@ static KaxChapters *parse_simple_chapters(mm_text_io_c *in, int64_t min_tc,
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atom = NULL;
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edition = NULL;
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printf("off: %lld\n", offset);
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while (in->getline2(line)) {
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strip(line);
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if (line.length() == 0)
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@ -158,7 +160,7 @@ static KaxChapters *parse_simple_chapters(mm_text_io_c *in, int64_t min_tc,
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*static_cast<EbmlUInteger *>(&GetChild<KaxChapterUID>(*atom)) =
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create_unique_uint32();
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*static_cast<EbmlUInteger *>(&GetChild<KaxChapterTimeStart>(*atom)) =
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(start - min_tc) * 1000000;
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(start - offset) * 1000000;
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display = &GetChild<KaxChapterDisplay>(*atom);
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*static_cast<EbmlUnicodeString *>
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(&GetChild<KaxChapterString>(*display)) =
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@ -178,12 +180,13 @@ static bool probe_xml_chapters(mm_text_io_c *) {
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return false;
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}
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static KaxChapters *parse_xml_chapters(mm_text_io_c *, int64_t, int64_t) {
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static KaxChapters *parse_xml_chapters(mm_text_io_c *, int64_t, int64_t,
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int64_t) {
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return NULL;
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}
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KaxChapters *parse_chapters(const char *file_name, int64_t min_tc,
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int64_t max_tc) {
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int64_t max_tc, int64_t offset) {
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mm_text_io_c *in;
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try {
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@ -194,10 +197,10 @@ KaxChapters *parse_chapters(const char *file_name, int64_t min_tc,
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}
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if (probe_simple_chapters(in))
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return parse_simple_chapters(in, min_tc, max_tc);
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return parse_simple_chapters(in, min_tc, max_tc, offset);
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if (probe_xml_chapters(in))
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return parse_xml_chapters(in, min_tc, max_tc);
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return parse_xml_chapters(in, min_tc, max_tc, offset);
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mxprint(stderr, "Error: Unknown file format for '%s'. It does not contain "
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"a supported chapter format.\n", file_name);
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@ -28,7 +28,7 @@
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using namespace libmatroska;
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KaxChapters *parse_chapters(const char *file_name, int64_t min_tc = 0,
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int64_t max_tc = -1);
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int64_t max_tc = -1, int64_t offset = 0);
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void write_chapters_xml(KaxChapters *chapters, FILE *out);
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@ -666,3 +666,7 @@ int64_t cluster_helper_c::get_max_timecode() {
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int64_t cluster_helper_c::get_first_timecode() {
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return first_timecode;
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}
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int64_t cluster_helper_c::get_timecode_offset() {
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return timecode_offset;
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}
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@ -72,6 +72,7 @@ public:
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int get_cluster_content_size();
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int64_t get_max_timecode();
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int64_t get_first_timecode();
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int64_t get_timecode_offset();
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void find_next_splitpoint();
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int get_next_splitpoint();
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@ -1799,6 +1799,7 @@ void create_next_output_file(bool last_file, bool first_file) {
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void finish_file() {
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int i;
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KaxChapters *chapters_here;
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int64_t start, end, offset;
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// Render the cues.
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if (write_cues && cue_writing_requested) {
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@ -1819,9 +1820,14 @@ void finish_file() {
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out->restore_pos();
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if ((kax_chapters != NULL) && (pass > 0)) {
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chapters_here = parse_chapters(chapter_file_name,
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cluster_helper->get_first_timecode(),
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cluster_helper->get_max_timecode());
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if (no_linking)
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offset = cluster_helper->get_timecode_offset();
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else
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offset = 0;
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start = cluster_helper->get_first_timecode() + offset;
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end = cluster_helper->get_max_timecode() + offset;
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chapters_here = parse_chapters(chapter_file_name, start, end, offset);
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kax_chapters_void->ReplaceWith(*chapters_here, *out, true);
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delete kax_chapters_void;
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kax_chapters_void = NULL;
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