[libav-bugs] [Bug 821] New: spdif encoder refuses to encapsulate MLP

bugzilla at aruru.libav.org bugzilla at aruru.libav.org
Wed Feb 18 01:42:50 CET 2015


            Bug ID: 821
           Summary: spdif encoder refuses to encapsulate MLP
           Product: Libav
           Version: git HEAD
          Hardware: X86
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: ---
         Component: libavformat
          Assignee: bugzilla at libav.org
          Reporter: davidm at davidmonro.net

Created attachment 521
  --> https://bugzilla.libav.org/attachment.cgi?id=521&action=edit
Trivial patch to enable MLP encapsulation in SPDIF

The spdif encoder refuses to encapsulate MLP. MLP over HDMI has been in the
HDMI standard since v1.1, and as far as I can tell is exactly the same as for
Dolby TrueHD, including using the same IEC61937 data type code (which the
standard actually referes to "MAT" rather than TrueHD or MLP). I've attached a
trivial patch to enable this, and it certainly works fine on my receiver
(Marantz NR1605) using:

aplay -D hdmi:CARD=HDMI,DEV=0,AES0=6 -c8 -fs16_le -r192000 out.spdif

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