/usr/share/mlt/xml/mlt-xml.dtd is in libmlt-data 0.9.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | <?xml version='1.0' encoding='utf-8'?>
<!-- MLT XML DTD v0.2.0 -->
<!ELEMENT mlt (profile | producer | playlist | tractor | multitrack | consumer)+ >
<!ATTLIST mlt
LC_NUMERIC CDATA #IMPLIED
version CDATA #IMPLIED
root CDATA #IMPLIED
profile CDATA #IMPLIED
title CDATA #IMPLIED
>
<!ELEMENT profile EMPTY >
<!ATTLIST profile
name CDATA #IMPLIED
description CDATA #IMPLIED
display_aspect_den CDATA #IMPLIED
display_aspect_num CDATA #IMPLIED
frame_rate_den CDATA #REQUIRED
frame_rate_num CDATA #REQUIRED
height CDATA #REQUIRED
progressive CDATA #REQUIRED
sample_aspect_den CDATA #REQUIRED
sample_aspect_num CDATA #REQUIRED
width CDATA #REQUIRED
>
<!ELEMENT property ANY >
<!ATTLIST property
name CDATA #REQUIRED
value CDATA #IMPLIED
>
<!ELEMENT producer (property)* >
<!ATTLIST producer
id ID #IMPLIED
in CDATA #IMPLIED
out CDATA #IMPLIED
mlt_service CDATA #IMPLIED
>
<!ELEMENT filter (property)* >
<!ATTLIST filter
id ID #IMPLIED
in CDATA #IMPLIED
out CDATA #IMPLIED
mlt_service CDATA #IMPLIED
track CDATA #IMPLIED
>
<!ELEMENT transition (property)* >
<!ATTLIST transition
id ID #IMPLIED
in CDATA #IMPLIED
out CDATA #IMPLIED
mlt_service CDATA #IMPLIED
a_track CDATA #IMPLIED
b_track CDATA #IMPLIED
>
<!ELEMENT playlist (entry | blank | producer | playlist | tractor | multitrack)+ >
<!ATTLIST playlist
id ID #IMPLIED
in CDATA #IMPLIED
out CDATA #IMPLIED
>
<!ELEMENT entry (producer | playlist | tractor | multitrack | filter | transition)* >
<!ATTLIST entry
producer IDREF #IMPLIED
in CDATA #IMPLIED
out CDATA #IMPLIED
>
<!ELEMENT blank EMPTY >
<!ATTLIST blank
length CDATA #REQUIRED
>
<!ELEMENT tractor (multitrack, (filter | transition)*) >
<!ATTLIST tractor
id ID #IMPLIED
in CDATA #IMPLIED
out CDATA #IMPLIED
>
<!ELEMENT multitrack (track | producer | playlist | tractor | multitrack)+ >
<!ATTLIST multitrack
id ID #IMPLIED
>
<!ELEMENT track (producer | playlist | tractor | multitrack | filter | transition)* >
<!ATTLIST track
producer IDREF #IMPLIED
>
<!ELEMENT consumer (property)* >
<!ATTLIST consumer
id ID #IMPLIED
mlt_service CDATA #IMPLIED
>
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