[FFmpeg-user] Extract DTS core from DTS-HD MA track

[Anssi Hannula]

19.09.2014, 21:28, No Spam Please kirjoitti:
> All, 
> 
> I searched the mailing list archive and the last mention of extracting DTS core was around mid 2013.  It was stated that it was a feature being worked on. 
> 
> Does the current version of ffmpeg support extracting the DTS core from a DTS-HD MA stream? 
> 
> If so, how does one invoke it using the command line? 
> 
> If not, are there other Linux based tools that would do the job? 

While splitting core is not directly supported (we need a new bitstream
filter), you can still achieve it with a trick, by passing the stream
through the S/PDIF IEC 61937 muxer and then demuxer, with HD disabled, e.g.:

ffmpeg -i DTS-HD_MA.dts -f spdif -dtshd_rate 0 -acodec copy - | \
	ffmpeg -i - -acodec copy DTS-Core.dts

-- 
Anssi Hannula