[FFmpeg-user] Dolby E decoder

Paul B Mahol onemda at gmail.com
Fri Sep 8 16:13:46 EEST 2017


On 9/8/17, Mike Brown <brown at mrvideo.vidiot.com> wrote:
> On Fri, Sep 08, 2017 at 02:30:08PM +0200, Paul B Mahol wrote:
>> On 9/8/17, Mike Brown <brown at mrvideo.vidiot.com> wrote:
>> > On Fri, Sep 08, 2017 at 01:39:34PM +0200, Paul B Mahol wrote:
>> >> On 9/8/17, Mike Brown <brown at mrvideo.vidiot.com> wrote:
>> >
>> > [trimmed]
>> >
>> >> > Why doesn't it matter?
>> >> >
>> >> > ffmpeg -i input_test.ts -map 0:1 -c:a pcm_s24le output_test.wav
>> >>
>> >> You need -c:a copy here, but you may also need to override input codec.
>> >
>> > The initial example wanted a wave file.  The audio stream that is in the
>> > TS file is not wave, it is SMPTE-302M.  The above extracts the wave
>> > stream
>> > out of the TS file's PCM stream.  Obviously I am missing something as to
>> > what is going on.
>> >
>> > So, I am completely confused as to how the raw stream data can be
>> > extracted,
>> > or overridden.
>> >
>> >> > ffmpeg version N-52837-g399f6ef Copyright (c) 2000-2013 the FFmpeg
>> >> > developers
>> >>
>> >> 2013 ? Today year is 2017, Welcome to future.
>> >
>> > That is because newer versions of ffmpeg no longer work with XP.  They
>> > crash
>> > trying to use an operation in a DLL that does not exist.  I have
>> > operational
>> > reasons that require XP.
>>
>> Than no help for you here.
>
> Are you saying that it takes a version newer than what I am using in order
> to decode Dolby-E to ac3?

Yes.

>
> I have a Win7 box that I recently brought up and can do some testing with
> a later version of ffmpeg.  In this case, what do I need to do for this
> override you are talking about?

Override is doable only with wav files i think.
TS files are not possible, last time I tried.


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