mirror of
https://github.com/mpv-player/mpv
synced 2024-12-30 11:02:10 +00:00
106 lines
4.0 KiB
ReStructuredText
106 lines
4.0 KiB
ReStructuredText
EDL files
|
|
=========
|
|
|
|
EDL files basically concatenate ranges of video/audio from multiple source
|
|
files into a single continuous virtual file. Each such range is called a
|
|
segment, and consists of source file, source offset, and segment length.
|
|
|
|
For example::
|
|
|
|
# mpv EDL v0
|
|
f1.mkv,10,20
|
|
f2.mkv
|
|
f1.mkv,40,10
|
|
|
|
This would skip the first 10 seconds of the file f1.mkv, then play the next
|
|
20 seconds, then switch to the file f2.mkv and play all of it, then switch
|
|
back to f1.mkv, skip to the 40 second mark, and play 10 seconds, and then
|
|
stop playback. The difference to specifying the files directly on command
|
|
line (and using ``--{ --start=10 --length=20 f1.mkv --}`` etc.) is that the
|
|
virtual EDL file appears as a virtual timeline (like a single file), instead
|
|
as a playlist.
|
|
|
|
The general simplified syntax is::
|
|
|
|
# mpv EDL v0
|
|
<filename>
|
|
<filename>,<start in seconds>,<length in seconds>
|
|
|
|
If the start time is omitted, 0 is used. If the length is omitted, the
|
|
estimated duration of the source file is used.
|
|
|
|
Note::
|
|
|
|
mpv can't use ordered chapter files or libquvi-resolved URLs in EDL
|
|
entries. Usage of relative or absolute paths as well as any protocol
|
|
prefixes is prevented for security reasons.
|
|
|
|
|
|
Syntax of mpv EDL files
|
|
=======================
|
|
|
|
Generally, the format is relatively strict. No superfluous whitespace (except
|
|
empty lines and commented lines) are allowed. You must use UNIX line breaks.
|
|
|
|
The first line in the file must be ``# mpv EDL v0``. This designates that the
|
|
file uses format version 0, which is not frozen yet and may change any time.
|
|
(If you need a stable EDL file format, make a feature request. Likewise, if
|
|
you have suggestions for improvements, it's not too late yet.)
|
|
|
|
The rest of the lines belong to one of these classes:
|
|
|
|
1) An empty or commented line. A comment starts with ``#``, which must be the
|
|
first character in the line. The rest of the line (up until the next line
|
|
break) is ignored. An empty line has 0 bytes between two line feed bytes.
|
|
2) A segment entry in all other cases.
|
|
|
|
Each segment entry consists of a list of named or unnamed parameters.
|
|
Parameters are separated with ``,``. Named parameters consist of a name,
|
|
followed by ``=``, followed by the value. Unnamed parameters have only a
|
|
value, and the name is implicit from the parameter position.
|
|
|
|
Syntax::
|
|
|
|
segment_entry ::= <param> ( <param> ',' )*
|
|
param ::= [ <name> '=' ] ( <value> | '%' <number> '%' <valuebytes> )
|
|
|
|
The ``name`` string can consist of any characters, except ``=%,;\n``. The
|
|
``value`` string can consist of any characters except of ``,;\n``.
|
|
|
|
The construct starting with ``%`` allows defining any value with arbitrary
|
|
contents inline, where ``number`` is an integer giving the number of bytes in
|
|
``valuebytes``. If a parameter value contains disallowed characters, it has to
|
|
be guarded by a length specifier using this syntax.
|
|
|
|
The parameter name defines the meaning of the parameter:
|
|
|
|
1) ``file``, the source file to use for this segment.
|
|
2) ``start``, a time value that specifies the start offset into the source file.
|
|
3) ``length``, a time value that specifies the length of the segment.
|
|
|
|
(Currently, time values are floating point values in seconds.)
|
|
|
|
Unnamed parameters carry implicit names. The parameter position determines
|
|
which of the parameters listed above is set. For example, the second parameter
|
|
implicitly uses the name ``start``.
|
|
|
|
Example::
|
|
|
|
# mpv EDL v0
|
|
%18%filename,with,.mkv,10,length=20,param3=%13%value,escaped,param4=value2
|
|
|
|
this sets ``file`` to ``filename,with,.mkv``, ``start`` to ``10``, ``length``
|
|
to ``20``, ``param3`` to ``value,escaped``, ``param4`` to ``value2``.
|
|
|
|
Instead of line breaks, the character ``;`` can be used. Line feed bytes and
|
|
``;`` are treated equally.
|
|
|
|
Syntax of EDL URIs
|
|
==================
|
|
|
|
mpv accepts inline EDL data in form of ``edl://`` URIs. Other than the
|
|
header, the syntax is exactly the same. It's far more convenient to use ``;``
|
|
instead of line breaks, but that is orthogonal.
|
|
|
|
Example: ``edl://f1.mkv,length=5,start=10;f2.mkv,30,20;f3.mkv``
|