Re: [ITP] ffmpeg (5.1.2)

[Thomas Wolff <towo@towo.net>]

Am 20.01.2023 um 16:58 schrieb Takashi Yano via Cygwin-apps:
> On Fri, 20 Jan 2023 16:47:01 +0100
> Thomas Wolff wrote:
>> Am 20.01.2023 um 16:28 schrieb Takashi Yano via Cygwin-apps:
>>> On Fri, 20 Jan 2023 16:04:46 +0100
>>> Thomas Wolff wrote:
>>>> Am 20.01.2023 um 11:35 schrieb Takashi Yano via Cygwin-apps:
>>>>> I would like to propose new package ffmpeg which is
>>>>> well known audio/video tool. ffmpeg is ported to
>>>>> many linux distributions and other unix like systems
>>>>> as well as widows. Since there is windows build,
>>>>> the demand of cygwin port might be relatively small,
>>>>> however its libraries are usefull for other softwares.
>>>>>
>>>>> I have posted another ITP for MOC (Music On Console)
>>>>> which is a ncurses based music player, whose plugin
>>>>> uses ffmpeg libraries.
>>>>>
>>>>> I have already prepared the ffmpeg package as follows.
>>>>>
>>>>> https://tyan0.yr32.net/cygwin/x86_64/release/ffmpeg/
>>>>>
>>>>> To build ffmpeg, other new packages i.e., x264, x265 and
>>>>> xvidcore are required, I have proposed ITP at the same
>>>>> time.
>>>>>
>>>> It's also missing cygswscale-6.dll which I don't find anywhere.
>>> It should be in:
>>>
>>> https://tyan0.yr32.net/cygwin/x86_64/release/ffmpeg/libffmpeg/libffmpeg-5.1.2-1.tar.xz
>>>
>>> which is reuqired by ffmpeg-5.1.2-1.tar.xz.
>> OK, I had overlooked that in the ffmpeg folder.
>> Now I get:
>>
>> C:/cygwin64/bin/ffmpeg.exe: error while loading shared libraries: ?:
>> cannot open shared object file: No such file or directory
> Thanks for testing.
>
> You need libSDL2_2.0_0 package installed as described in
> https://tyan0.yr32.net/cygwin/x86_64/release/ffmpeg/ffmpeg-5.1.2-1.hint
A first test suggests that this build may be significantly (~70%) slower 
than the native Windows build of ffmpeg, unfortunately. Do you see a 
possible reason for that and a chance to compensate?