[FFmpeg-devel] Does ffmlp decode Blueray?

[Ramiro Polla]

Hi,

On Wed, Jul 29, 2009 at 7:43 AM, Nico Sabbi<Nicola.Sabbi at poste.it> wrote:
> On Tuesday 28 July 2009 15:54:28 Nico Sabbi wrote:
>> On Tuesday 28 July 2009 13:07:08 Ian Caulfield wrote:
>> > 2009/7/28 Nico Sabbi <Nicola.Sabbi at poste.it>:
>> > > Ian, I patched mplayer's TS demuxer to extract MLP streams in
>> > > 0x72 substreams (btw, can you send me the list of sub_id
>> > > assignments, please? I lost it ;-) ) but ffmlp refuses to
>> > > decode all the samples I gave it, with various errors.
>> > > Can ffmlp decode MLP streams in BD at all?
>> >
>> > I don't have my main development machine handy, so I can't
>> > remember if I'd figured out any other ids.
>> >
>> > As far as I know Blu-Ray TrueHD tracks should work, although I've
>> > only tested a couple. If you have any that fail, post a sample
>> > and file a bugreport...
>> >
>> > Ian
>>
>> the patch is here, but you also need to specify -audsid 0x72.
>> The bugreport tonight.
>
>
> the sample is ac3+truehd.ts in incoming
> the error is:
>
> $ ./mplayer ?-vo null ../../ac3+truehd.ts -ausid 0x72
> Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
> [mlp @ 0x12cbef0]There must be no extraword for MLP.

I'll try being more verbose. Since it's TrueHD, you have to use
CODEC_ID_TRUEHD. It uses the same mathematical basis as MLP, there are
some additions, and a few tweaks that make it different from MLP.

Ramiro Polla