3 - Create: DoM can create Interop or SMPTE; we can't really disallow Interop at this time.
4 - Verify: warning about non-SMPTE.
7 Don't have access to SMPTE ST 429-19 so I don't know what that requires.
11 - Create: should mostly meet these constraints.
12 TODO#1950: can languages from imported things get into the output?
14 - Hint: probably not required.
16 # 7.1 Picture Essence Encoding
18 - Create: can violate frame-rate constraints, but will only make Flat/Scope (unless an advanced option is ticked).
22 We don't warn specifically about non-24fps 3D; maybe we should.
24 # 7.1.1 Active Image Area
32 # 7.2.1 File Size Limitations
38 # 7.2.2 Language Element
40 - Create: not enforced.
44 # 7.2.3 StartTime Element
50 # 7.2.4 First Timed Text Event
52 - Create: not enforced.
58 - Create: not enforced.
62 # 7.2.6 Closed Captions Line Treatment
64 - Create: not enforced.
68 # 7.2.7 Main Subtitle Line Treatment (Informational)
70 - Create: not enforced.
72 - Hint: yes, except TODO 79-character limit is not mentioned
74 # 7.3 Audio Sample Rates
80 # 8 Composition Playlist Constraints
94 # 8.3 Timed Text Tracks
116 - Create: FFEC/FFMC not enforced; FFOC/LFOC yes.
120 # 8.6 Composition Metadata
122 # 8.6.1 CompositionMetadataAsset
128 # 8.6.2 Version Number
134 # 8.6.3 Application Extension
140 # 8.6.4 MCA Sub Descriptors
152 # 9 Packing List Constraints
154 # 9.1 Annotation Text
156 - Create: yes (TODO#1956 disallow empty DCP names).
160 # 9.2 Digital Signature
166 # 10 Track File Constraints
171 - Verify: partial encryption: yes; HMAC/MIC: TODO#1957
174 # 10.2 Picture Track Files
176 # 10.2.1 JPEG2000 Compression
179 - Verify: TODO#1958 done but nobody is calling it AFAICS!
182 # 10.3 Sound Track Files
184 # 10.3.1 Channel Assignments
187 - Verify: TODO#1959 check for silence on 9, 10, 16; TODO#1960 check for channel configuration 4
190 This is difficult to be sure about because I'm lacking some of the standards.
192 # 10.3.2 Multichannel Audio
194 This is difficult to be sure about because I'm lacking some of the standards.
196 # 10.3.3 Sign Language Video PCM
197 # 10.3.4 Motion Data PCM
203 # 10.4 Timed Text Track Files
208 - Verify: TODO#1961 check unique
213 - Create: TODO#1962 check
214 - Verify: TODO#1962 check
217 # 10.4.3 Container Duration
219 - Create: TODO#1963 check
220 - Verify; TODO#1963 check
223 # Annex A Sign Language Video Encoding