Box support

ISO/IEC 14496-12:2012 (ISO base media file format)

     |      |      |      |      |     |
-----|------|------|------|------|-----|
ftyp ✅|
pdin ✅|
moov ✅|
 | mvhd ✅|
 | trak ✅|
 | | tkhd ✅|
 | | tref ✅|
 | | trgr |
 | | edts ✅ |
 | | | elst ✅ |
 | | mdia ✅|
 | | | mdhd ✅|
 | | | hdlr ✅|
 | | | minf ✅|
 | | | | vmhd |
 | | | | smhd |
 | | | | hmhd |
 | | | | nmhd |
 | | | | dinf ✅ |
 | | | | | dref |
 | | | | stbl ✅|
 | | | | | stsd ✅|
 | | | | | stss |
 | | | | | ctts |
 | | | | | cslg |
 | | | | | stsc |
 | | | | | stsz |
 | | | | | stz2 |
 | | | | | stco |
 | | | | | co64 |
 | | | | | stss |
 | | | | | stsh |
 | | | | | padb |
 | | | | | stdp |
 | | | | | sdtp |
 | | | | | sbgp |
 | | | | | sgpd |
 | | | | | subs ✅|
 | | | | | saiz |
 | | | | | saio |
 | | udta ✅|
 | mvex ✅|
 | | mehd ✅|
 | | trex ✅|
 | | leva |
moof ✅|
 | mfhd ✅|
 | traf ✅|
 | | tfhd ✅|
 | | trun ✅|
 | | sbgp |
 | | sgpd |
 | | subs ✅|
 | | saiz |
 | | saio |
 | | tfdt ✅|
mfra ✅|
 | tfra ✅|
 | mfro ✅|
mdat ✅|
free ✅|
skip ✅|
 | udta ✅|
 | | cprt |
 | | tsel |
 | | strk ✅|
 | | | stri |
 | | | strd |
meta |
 | hdlr ✅|
 | dinf ✅|
 | | dref |
 | iloc |
 | ipro |
 | | sinf ✅|
 | | | frma |
 | | | schm |
 | | | schi |
 | iinf |
 | xml |
 | bxml |
 | pitm |
 | fiin |
 | | paen |
 | | | fire |
 | | | fpar |
 | | | fecr |
 | | segr |
 | | gitn |
 | idat |
 | iref |
meco ✅|
 | mere |
styp ✅|
sidx ✅|
ssix ✅|
prft |

ISO/IEC 23009-1:2014(E) (Media presentation description and segment formats)

|      |
|------|
| emsg ✅|
| pcrb |

ISO/IEC 14496-30:2014 (Timed text and other visual overlays in ISOBMFF)

|      |
|------|
| vttC ✅|
| vttc ✅|
| vtte ✅|
| vlab ✅|
| payl ✅|
| wvtt |
| vsid |
| ctim |
| iden |
| sttg |
| vtta |

ISO/IEC 14496-15:2014 (Carriage of network abstraction layer (NAL) unit structured video in ISO base media file format)

|      |
|------|
| avc1 ✅|