* Add support of Timed Text ('tx3g', 'text' sample entries) in MP4/MOV files * Add basic handling of AC-4 streams ('ac4_syncframe' only) in MP4 & TS files *

* Add support of Timed Text ('tx3g', 'text' sample entries) in MP4/MOV files * Add basic handling of AC-4 streams ('ac4_syncframe' only) in MP4 & TS files * MPEG-TS: Support PSI tables & descriptors from ATSC A/65 standard, recognize all descriptors listed in DVB BlueBook A038r16 * Add descriptions for 'cc_type' 'active_format', 'video_format' fields * Include PES packet type ('audio', 'video', private') to header name * Add basic detection of MPEG Program / System Streams * MP4/MOV: recognize more 'udta' boxes * Improve probe algorithm: better recognition of MP4, small TS files * Fix freezing in some cases of H.264 parsing