> On Feb 26, 2025, at 23:32, Rémi Denis-Courmont <r...@remlab.net> wrote:
> 
> Hi,
> 
> Le 26 février 2025 16:18:20 GMT+02:00, Zhao Zhili 
> <quinkblack-at-foxmail....@ffmpeg.org> a écrit :
>> 
>> 
>>> On Feb 26, 2025, at 21:50, Tomas Härdin <g...@haerdin.se> wrote:
>>> 
>>> fre 2025-02-21 klockan 20:10 +0000 skrev Soft Works:
>>>> 
>>>> 
>>>> From: Kieran Kunhya <kieran...@googlemail.com>
>>>> Sent: Freitag, 21. Februar 2025 20:27
>>>> To: Soft Works <softwo...@hotmail.com>
>>>> Cc: FFmpeg development discussions and patches
>>>> <ffmpeg-devel@ffmpeg.org>
>>>> Subject: Re: [FFmpeg-devel] I've written a filter in Rust
>>>> 
>>>> 
>>>> On Fri, 21 Feb 2025, 15:02 Soft Works,
>>>> <softwo...@hotmail.com<mailto:softwo...@hotmail.com>> wrote:
>>>> 
>>>> 
>>>>> -----Original Message-----
>>>>> From: ffmpeg-devel
>>>>> <ffmpeg-devel-boun...@ffmpeg.org<mailto:ffmpeg-devel-bounces@ffmpeg
>>>>> .org>> On Behalf Of
>>>>> Kieran Kunhya via ffmpeg-devel
>>>>> Sent: Freitag, 21. Februar 2025 15:53
>>>>> To: FFmpeg development discussions and patches <ffmpeg-
>>>>> de...@ffmpeg.org<mailto:de...@ffmpeg.org>>
>>>>> Cc: Kieran Kunhya
>>>>> <kieran...@googlemail.com<mailto:kieran...@googlemail.com>>
>>>>> Subject: Re: [FFmpeg-devel] I've written a filter in Rust
>>>>> 
>>>>> On Fri, 21 Feb 2025, 14:30 Soft Works, <softworkz-at-
>>>>> hotmail....@ffmpeg.org<mailto:hotmail....@ffmpeg.org>>
>>>>> wrote:
>>>>> 
>>>>>> 
>>>>>> 
>>>>>>> -----Original Message-----
>>>>>>> From: ffmpeg-devel
>>>>>>> <ffmpeg-devel-boun...@ffmpeg.org<mailto:ffmpeg-devel-bounces@ff
>>>>>>> mpeg.org>> On Behalf Of
>>>>>>> Michael Niedermayer
>>>>>>> Sent: Freitag, 21. Februar 2025 14:22
>>>>>>> To: FFmpeg development discussions and patches <ffmpeg-
>>>>>>> de...@ffmpeg.org<mailto:de...@ffmpeg.org>>
>>>>>>> Subject: Re: [FFmpeg-devel] I've written a filter in Rust
>>>>>>> 
>>>>>>> Hi
>>>>>>> 
>>>>>>> On Fri, Feb 21, 2025 at 10:01:56AM +0100, Tomas Härdin wrote:
>>>>>>>> tor 2025-02-20 klockan 23:49 +0100 skrev Michael Niedermayer:
>>>>>>>>> Hi
>>>>>>>>> 
>>>>>>>>> On Thu, Feb 20, 2025 at 02:06:47PM +0100, Leandro Santiago
>>>>>>>>> wrote:
>>>>>>>>>> [insert meme here]
>>>>>>>>> [...]
>>>>>>>>>> I also recorded a video showing the filter in action [7].
>>>>>>>>> [...
>>>>>>>>>> [7] https://youtu.be/U_y4-NnaINg
>>>>>>>>> 
>>>>>>>>> cool, it doesnt detect everyone though
>>>>>>>>> 
>>>>>>>>> also i think this shows how useful a plugin framework would
>>>>>>>>> be for
>>>>>>>>> ffmpeg
>>>>>>>>> 
>>>>>>>>> with plugins everyone could use,test and contribute to this
>>>>>>>>> today.
>>>>>>>>> without plugins, this needs to be merged in ffmpeg git
>>>>>>>>> master. (which
>>>>>>>>> will take some time i suspect)
>>>>>>>> 
>>>>>>>> Have we not gone over and rejected plugins many times? I
>>>>>>>> recall points
>>>>>>> 
>>>>>>> no
>>>>>>> there was no formal and no public informal vote that i
>>>>>>> remember.
>>>>>>> 
>>>>>>> ive raised the issue with plugins many times. Because it would
>>>>>>> allow people and myself to contribute more complex features and
>>>>>>> end the stagnation of FFmpeg.
>>>>>> 
>>>>>> Yup, that's exactly one of the reasons why other projects like
>>>>>> GStreamer
>>>>>> have gained that much popularity. It might not have happened when
>>>>>> ffmpeg would have been more open and extensible in the first
>>>>>> place.
>>>>>> 
>>>>> 
>>>>> It's quite the opposite. Gstreamer is successful in its vertical
>>>>> because it
>>>>> allows easy inclusion of vendor binary blobs. This is not "open and
>>>>> extensible".
>>>> 
>>>> Open means it's extensible for everybody, including vendors. I fail
>>>> to see
>>>> what's bad about it. Do we have a fight against everything
>>>> commercial?
>>>> 
>>>> What are you afraid of to happen?
>>> 
>>> I think Kieran already expressed quite well the issue:
>>> 
>>> 1) it encourages proprietary blobs
>>> 2) it creates pressure on us to maintain compatibility with said blobs
>> 
>> The first issue has a solution: use gpl or more strict license for the plugin
>> interface support, like obs-studio.
>> 
>> For the second issue, we can just not give a stable API/ABI guarantee for
>> the plugin interface, for example, reject to load a plugin if the version 
>> doesn’t
>> match.
>> 
>> I have some feature in mind which suit for a plugin but not for a builtin 
>> implementation.
>> For example, different AI model have different pre- and post-process. Current
>> dnn in libavfilter only support some particular model like yolov4. We can’t 
>> write some
>> code for each model, which can be outdated soon.
>> 
>> VLC and obs-studio are both good example of plugin based frameworks.
> 
> Or the Linux kernel.
> 
> Though VLC does not have that "unofficial" plugins, which aren't backports of 
> official plugins from a newer version. So I'm not convinced that that's a 
> good example.

Maybe not much but I have noticed some unofficial plugins,

https://github.com/mfkl/awesome-vlc

And there is a Debian package for vlc-plugin-bittorrent.

Plugin interface can be abused, but at the same time, they can fulfill many 
legitimate
user needs. Not everyone can write a program based on 
libavcodec/libavformat/libavfilter,
and get the same function as fftools. They can write a filter plugin, and let 
ffmpeg cmd to
do the heavy lifting.

> 
> Even then proprietary vendors still managed to screw it up by failing to 
> release new versions of their binary blobs for new versions of (Windows) VLC.
> 
> In my opinion, VLC plugins are more about reducing binary load times and load 
> sizes by breaking the code up, and helping Linux distro break dependencies 
> down, than about enabling external (proprietary or not) plugins.
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