timeline: remove support for the mplayer2 EDL format

It was a bit too complicated and inconvenient, and I doubt anyone
actively used it. The mpv EDL format should cover all use cases.

1 files changed, 0 insertions, 139 deletions

diff --git a/DOCS/edl.rst b/DOCS/edl.rst
deleted file mode 100644
index dcb2f32912..0000000000
--- a/DOCS/edl.rst
+++ /dev/null
@@ -1,139 +0,0 @@
-Format of mplayer2 EDL files
-============================
-
-The first line in the file must be ``mplayer EDL file, version 2``.
-The rest of the lines belong to one of these classes:
-
-1) lines specifying source files
-2) empty lines
-3) lines specifying timeline segments.
-
-Lines beginning with ``<`` specify source files. These lines first
-contain an identifier used to refer to the source file later, then the
-filename separated by whitespace. The identifier must start with a
-letter. Filenames that start or end with whitespace or contain
-newlines are not supported.
-
-On other lines ``#`` characters delimit comments. Lines that contain
-only whitespace after comments have been removed are ignored.
-
-Timeline segments must appear in the file in chronological order. Each
-segment has the following information associated with it:
-
-- duration
-- output start time
-- output end time (= output start time + duration)
-- source id (specifies the file the content of the segment comes from)
-- source start time (timestamp in the source file)
-- source end time (= source start time + duration)
-
-The output timestamps must form a continuous timeline from 0 to the
-end of the last segment, such that each new segment starts from the
-time the previous one ends at. Source files and times may change
-arbitrarily between segments.
-
-The general format for lines specifying timeline segments is
-[output time info] source_id [source time info]
-source_id must be an identifier defined on a ``<`` line. Both the time
-info parts consists of zero or more of the following elements:
-
-1) ``timestamp``
-2) ``-timestamp``
-3) ``+duration``
-4) ``*``
-5) ``-*``
-
-, where ``timestamp`` and ``duration`` are decimal numbers (computations
-are done with nanosecond precision). Whitespace around ``+`` and ``-`` is
-optional. 1) and 2) specify start and end time of the segment on
-output or source side. 3) specifies duration; the semantics are the
-same whether this appears on output or source side. 4) and 5) are
-ignored on the output side (they're always implicitly assumed). On the
-source side 4) specifies that the segment starts where the previous
-segment *using this source* ended; if there was no previous segment
-time 0 is used. 5) specifies that the segment ends where the next
-segment using this source starts.
-
-Redundant information may be omitted. It will be filled in using the
-following rules:
-
-- output start for first segment is 0
-- two of [output start, output end, duration] imply third
-- two of [source start, source end, duration] imply third
-- output start = output end of previous segment
-- output end = output start of next segment
-- if ``*``, source start = source end of earlier segment
-- if ``-*``, source end = source start of a later segment
-
-As a special rule, a last zero-duration segment without a source
-specification may appear. This will produce no corresponding segment
-in the resulting timeline, but can be used as syntax to specify the
-end time of the timeline (with effect equal to adding -time on the
-previous line).
-
-Examples::
-
-    mplayer EDL file, version 2
-    < id1 filename
-
-    0 id1 123
-    100 id1 456
-    200 id1 789
-    300
-
-All segments come from the source file ``filename``. First segment
-(output time 0-100) comes from time 123-223, second 456-556, third
-789-889.
-
-::
-
-    mplayer EDL file, version 2
-    < f filename
-    f  60-120
-    f 600-660
-    f  30- 90
-
-Play first seconds 60-120 from the file, then 600-660, then 30-90.
-
-::
-
-    mplayer EDL file, version 2
-    < id1 filename1
-    < id2 filename2
-
-    +10 id1 *
-    +10 id2 *
-    +10 id1 *
-    +10 id2 *
-    +10 id1 *
-    +10 id2 *
-
-This plays time 0-10 from filename1, then 0-10 from filename1, then
-10-20 from filename1, then 10-20 from filename2, then 20-30 from
-filename1, then 20-30 from filename2.
-
-::
-
-    mplayer EDL file, version 2
-    < t1 filename1
-    < t2 filename2
-
-    t1 * +2            # segment 1
-    +2 t2 100          # segment 2
-    t1 *               # segment 3
-    t2 *-*             # segment 4
-    t1 3 -*            # segment 5
-    +0.111111 t2 102.5 # segment 6
-    7.37 t1 5 +1       # segment 7
-
-This rather pathological example illustrates the rules for filling in
-implied data. All the values can be determined by recursively applying
-the rules given above, and the full end result is this::
-
-    +2         0-2                 t1  0-2              # segment 1
-    +2         2-4                 t2  100-102          # segment 2
-    +0.758889  4-4.758889          t1  2-2.758889       # segment 3
-    +0.5       4.4758889-5.258889  t2  102-102.5        # segment 4
-    +2         5.258889-7.258889   t1  3-5              # segment 5
-    +0.111111  7.258889-7.37       t2  102.5-102.611111 # segment 6
-    +1         7.37-8.37           t1  5-6              # segment 7