[FFmpeg-devel] [PATCH v2] Add MediaFoundation wrapper

[Carl Eugen Hoyos]

2017-04-04 16:04 GMT+02:00 wm4 <nfxjfg at googlemail.com>:
> On Tue, 4 Apr 2017 15:44:29 +0200
> Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
>
>> 2017-04-04 12:45 GMT+02:00 wm4 <nfxjfg at googlemail.com>:
>> > On Tue, 4 Apr 2017 12:43:14 +0200
>> > Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
>> >
>> >> 2017-04-04 12:41 GMT+02:00 wm4 <nfxjfg at googlemail.com>:
>> >> > On Tue, 4 Apr 2017 12:09:23 +0200
>> >> > Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
>> >> >
>> >> >> 2017-04-04 7:45 GMT+02:00 wm4 <nfxjfg at googlemail.com>:
>> >> >>
>> >> >> > +  --enable-mf              enable decoding via MediaFoundation [no]
>> >> >>
>> >> >> Why is it not autodetected?
>> >> >
>> >> > Do we want that?
>> >>
>> >> Would autodetection break FFmpeg for anybody on Vista or newer?
>> >>
>> >
>> > I don't know. You didn't answer my question.
>>
>> Yes, I did.
>> We don't want to break distributed builds with the auto-detection.
>
> Can't see where you did.

Consider reading the message again;-)

> This directly links some mfplat.dll functions, so as I understand, it'd
> require at least Windows XP SP2 for libavcodec binaries to run.

Which isn't supported by default builds anymore afaiu.

> But I can't test that. Also, build would almost surely fail with older
> MinGW-w64 versions or original MinGW.

Auto-detection of course means that configure disables the feature
if a build would fail.
But I am sure you knew that.

Please add auto-detection, Carl Eugen