Re: [FFmpeg-devel] [freezedetect filter] discard frozen frames option ever added?

From: Paul B Mahol <onemda@gmail.com>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [freezedetect filter] discard frozen frames option ever added?
Date: Mon, 2 Oct 2023 08:06:47 +0200
Message-ID: <CAPYw7P59EFERz56KR3rZ0O12nrHSTRCJZLOSYSt-wVm=20ofzQ@mail.gmail.com> (raw)
In-Reply-To: <CA+BiOCLkGN6E5g1FUP3PrEMp5ooRUee=8ZoW8ky9dBrZiXivMA@mail.gmail.com>

On 10/2/23, Umberto Boccioni <vexware@gmail.com> wrote:
>>
>> something like
>> freezedetect,metadata=mode=select:key=lavfi.freezedetect.freeze_amount:value=some_frozen_amount:function=greater
>>
>> You just need to export frozen value from freezedetect filter for each
>> output frame metadata.
>>
>>
> Thanks for taking the time to respond, which I'm sure is another load on
> top of your dev duties.  For completeness' sake, can you elaborate on the
> solution you originally proposed a few years ago?  I am hoping to eliminate
> all (potentially multiple) frozen segments in one command.  Getting from
> your description to a functional solution requires a level of
> sophistication (not sure how to "export") I haven't yet acquired with
> ffmpeg.
>
> As an example, I found a python script which uses ffmpeg's freezedetect
> output to accomplish this in one command, but a native solution would be
> preferable:
> https://gitlab.com/dak425/scripts/-/blob/master/trim_frozen_frames?ref_type=heads
>
> No point in using that patch as functionality is already available:
>>
>>
> Certainly, this is a reasonable position to take and I'm not trying to
> convince anyone otherwise.  However, if the functionality is achievable
> only through a relatively more non-obvious, opaque, or complicated means,
> then having an option that condenses and simplifies and makes more visible
> that functionality, well, I think that's a reasonable position to take
> too.  In any case, it's moot without a non-buggy patch.
>

Everything is written in examples in documentation.
Even written full example here.

> --
> ub
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