6.0.0 video thumbnailer...

[Gilles Caulier]

And this line :
https://cgit.kde.org/ffmpegthumbs.git/tree/CMakeLists.txt#n16

Gilles

2018-03-04 22:58 GMT+01:00 Gilles Caulier <caulier.gilles at gmail.com>:

> Look this line :
>
> https://cgit.kde.org/ffmpegthumbs.git/tree/ffmpegthumbnailer.h#n21
>
> Gilles
>
> 2018-03-04 19:27 GMT+01:00 Maik Qualmann <metzpinguin at gmail.com>:
>
>> Gilles,
>>
>> libffmpegthumbnailer has no KIO dependencies, only C and FFMpeg. Or I do
>> not
>> look right? Does the package exist in your Linux distribution?
>>
>> https://github.com/dirkvdb/ffmpegthumbnailer/tree/master/lib
>> ffmpegthumbnailer
>>
>> Maik
>>
>> Am Sonntag, 4. März 2018, 18:56:48 CET schrieb Gilles Caulier:
>> > Another one : https://bugs.kde.org/show_bug.cgi?id=387892
>> >
>> > not reproducible here, but with FFMPEG, this will kill the bug...
>> >
>> > Gilles
>> >
>> > 2018-03-04 18:55 GMT+01:00 Gilles Caulier <caulier.gilles at gmail.com>:
>> > > For me this entry is valid :
>> > >
>> > > https://bugs.kde.org/show_bug.cgi?id=390443
>> > >
>> > > and we can try to close this file if we use FFMPEG directly to
>> generate
>> > > thumbnailer...
>> > >
>> > > Gilles
>> > >
>> > > 2018-03-04 17:49 GMT+01:00 Gilles Caulier <caulier.gilles at gmail.com>:
>> > >> Hi all,
>> > >>
>> > >> Since i written the FFMPEG video metadata parser in 6.0.0 branch, i'm
>> > >> trying to register a huge video collection from my host computer.
>> > >>
>> > >> Here, more than 2500 MKV files are present, plus a lots of MP4, MOV,
>> and
>> > >> another media taken with cellular and camera.
>> > >>
>> > >> The registration have been very fast. 2500 file parsed in 2 minutes
>> and
>> > >> ready to use. System has SSD, Sqlite, 8 cores, and 32Gb of RAM. No
>> crash
>> > >> all work fine... excepted... the video thumbnails.
>> > >>
>> > >> I facing random dysfunctions with video files. Sometime thumbs are
>> there,
>> > >> sometime not. Using F5 always give a different results until i try to
>> > >> insist and i can see the DB locked and revival...
>> > >>
>> > >> The video thumbnailer is based on QtAV frame extractor. My QtAV is
>> last
>> > >> stable 1.12.0. I suspect a bug somewhere in QtAV, as i can see
>> > >> thumbnailer
>> > >> code including a lots of mutex to prevent concurrency.
>> > >>
>> > >> This is typically abnormal. FFMPEG API is re-entrant as i checked
>> with
>> > >> the multi-threaded metadata parser unit test.
>> > >>
>> > >> As we depend now directly of FFMPEG API, I propose to rewrite the
>> video
>> > >> thumbnailer with libav C function.
>> > >>
>> > >> We have code ready to use with ffmpeg API here :
>> > >>
>> > >> https://cgit.kde.org/ffmpegthumbs.git/tree/
>> > >>
>> > >> Your viewpoint ?
>> > >>
>> > >> Gilles
>>
>>
>>
>>
>>
>
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