+Port DVD rip
+
+Write still j2ks straight to a MXF.
+md5_data to use openssl
+
Standardise j2c/j2k
-Sort out fight between Job::status and overridden versions; a bit ugly
Format name in ~/.dvdomatic screws up with spaces; use ID or something
Thumbnails are poorly named
x-thread signaller
Destroy _buffer_src_context / _buffer_sink_context
Don't start later jobs when one breaks.
Compute time remaining based on more recent information.
-Start frame later than ... error?
Use lexical_cast more
Do deps better