[kdemultimedia] [Bug 356348] HEVC Videos Not Showing in Preview Mode

[Rog131 via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356348

--- Comment #6 from Rog131  ---
(In reply to phillip9001 from comment #5)

> I take it that KDE 4.14.2 doesn't have the necessary libraries to preview
> HEVC in dolphin? 
> Does that mean I should update my libraries or try updating KDE Plasma 4 to
> Plasma 5?
> Does this problem occur in KDE Plasma 5?

It is not the KDE libraries - It is the libav/ffmpeg libraries.

Short : The Debian & Ubuntu decided to use the ffmpeg fork libav /1/. The
Ubuntu 14.04 is using libav 9.18 /2/. Ubuntu has a stable release policy /3/ to
not update old packages. There will be bug fixes for the serious bugs.

When I was using the Ubuntu 14.04 I added the HEVC support to the KDE
thumbnailer by:

- compiling an own local version of the current ffmpeg
- rebuilding the ffmpegthumbs so it is using the local ffmpeg not the distro
libav.

By my knowledge the Mint /4/ is using the Ubuntu packages but I don't know
witch version is using the newest released version.

With the Ubuntu KF5 thumbnailer there is the bug:
https://bugs.launchpad.net/ubuntu/+source/dolphin/+bug/1505014 


1. https://www.kubuntuforums.net/showthread.php?62882-Avconv-Winff-ffmpeg
2. http://packages.ubuntu.com/source/trusty-updates/libav
3. https://wiki.ubuntu.com/StableReleaseUpdates
4. https://en.wikipedia.org/wiki/Linux_Mint

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[kdemultimedia] [Bug 356348] HEVC Videos Not Showing in Preview Mode

[via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356348

--- Comment #5 from phillip9...@juno.com ---
(In reply to Rog131 from comment #3)
> Maybe - Libraries don't support HEVC ?
> 
> A quick test - with an older Ubuntu: 
> 
> $ lsb_release -a
> Distributor ID: Ubuntu
> Description:Ubuntu 14.04.3 LTS
> Release:14.04
> Codename:   trusty
> 
> $ kde4-config --version
> Qt: 4.8.6
> KDE Development Platform: 4.13.3
> 
> Standard Ubuntu repository thumbnailer - using libav
> $ apt-cache policy ffmpegthumbs
> ffmpegthumbs:
>   Installed: 4:4.13.3-0ubuntu0.1
>   Candidate: 4:4.13.3-0ubuntu0.1
> 
> Local build - using ffmpeg - not Ubuntu repository libav
> $ apt-cache policy kde-thumbnailer-ffmpeg-real-thumbs-mattepaint
> kde-thumbnailer-ffmpeg-real-thumbs-mattepaint:
>   Installed: 0.4~trusty~ppa3
>   Candidate: 0.4~trusty~ppa3
> 
>   
> Sample file: https://x265.com/hevc-video-files/ ->
> https://s3.amazonaws.com/x265.org/video/Tears_400_x265.mp4
> 
> 
> The stamdard Ubuntu repository thumbnailer: http://imgur.com/KWy29Gl
> 
> Local build: http://imgur.com/BNT6pCp
> 
> Maybe - Libraries are too old, don't support HEVC ?


I take it that KDE 4.14.2 doesn't have the necessary libraries to preview HEVC
in dolphin? 
Does that mean I should update my libraries or try updating KDE Plasma 4 to
Plasma 5?
Does this problem occur in KDE Plasma 5?

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[kdemultimedia] [Bug 356348] HEVC Videos Not Showing in Preview Mode

[via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356348

--- Comment #4 from phillip9...@juno.com ---
(In reply to Christoph Feck from comment #2)
> Which mime type or file extension do these unsupported files have?

The HEVC files are both mp4 and mkv containers.
I hope that is what you were referring to.
Let me know if you need anymore information.

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