[digiKam-users] digiKam 6.0.0 and video support : need video samples

[Gilles Caulier-4]

Hi all,

This week, i solved a main problem with video support in digiKam with next 6.0.0.

Exiv2 video support exists, but it's completely bugous and crash digiKam quickly. This problem exists since many year now, and as nobody is motivated to fix Exiv2 video code, i used a different way to support video metadata : ffmpeg.

https://www.flickr.com/photos/digikam/39880716214/

The way to use ffmpeg as new dependency do not increase the application complexity. The dependencies puzzle still the same as use use already QtAV to play video and this one use ffmpeg in background. So digiKam depends already of ffmpeg since 5.4.0 release.

The idea to support properly video metadata is to be able to manage video medias as images. The database must be able to search video items based of video properties, taken from metadata. The search engine is already ready since a while, by the scan engine used to populate the database is not suitable as video support in Exiv2 is so far un-finalized (in video file parser).

Else, Exiv2 is well implemented to support video metadata tags, as all XMP namespace implemented by myself few years ago. So if we have a different parser to fill XMP tags from video, the problem will be solved.

And it's done with current implementation from next 6.0.0 branch. FFMPeg is able to extract most important video properties as :

make

model,

dates,

duration,

codecs,

keywords,

rating,

GPS,

etc... (and more)

i tested with my personal video collection, mostly based on MOV file generated with Apple devices (iphone, ipad) and Software (iMovies, Final cut pro). But i need more video samples :

- Video taken from Android device,

- Video taken from digital camera,

- Video generated from software (with properties set as Keywords, rating, copyright, etc.)

If you have samples to share, please use Internet Cloud repository. If you know place on Internet with video samples to share, to hesitate to share in this room.

Thanks in advance for your help.

Gilles Caulier

[NeiNei]

Dear Gilles,

congrats for making this improvement possible for us!

Perhaps I did not get it, therefore just one question:
Would it be possible to also edit/write metadata like GPS position
coordinates to a video clip as I could do it with JPEG photos in the
Geolocation Editor?

Thanks in advance,
NeiNei

On 03.03.2018 14:01, Gilles Caulier wrote:

> Hi all,
>
> This week, i solved a main problem with video support in digiKam with
> next 6.0.0.
>
> Exiv2 video support exists, but it's completely bugous and crash digiKam
> quickly. This problem exists since many year now, and as nobody is
> motivated to fix Exiv2 video code, i used a different way to support
> video metadata : ffmpeg.
>
> https://www.flickr.com/photos/digikam/39880716214/
>
> The way to use ffmpeg as new dependency do not increase the application
> complexity. The dependencies puzzle still the same as use use already
> QtAV to play video and this one use ffmpeg in background. So digiKam
> depends already of ffmpeg since 5.4.0 release.
>
> The idea to support properly video metadata is to be able to manage
> video medias as images. The database must be able to search video items
> based of video properties, taken from metadata. The search engine is
> already ready since a while, by the scan engine used to populate the
> database is not suitable as video support in Exiv2 is so far
> un-finalized (in video file parser).
>
> Else, Exiv2 is well implemented to support video metadata tags, as all
> XMP namespace implemented by myself few years ago. So if we have a
> different parser to fill XMP tags from video, the problem will be solved.
>
> And it's done with current implementation from next 6.0.0 branch. FFMPeg
> is able to extract most important video properties as :
>
> make
> model,
> dates,
> duration,
> codecs,
> keywords,
> rating,
> GPS,
> etc... (and more)
>
> i tested with my personal video collection, mostly based on MOV file
> generated with Apple devices (iphone, ipad) and Software (iMovies, Final
> cut pro). But i need more video samples :
>
> - Video taken from Android device,
> - Video taken from digital camera,
> - Video generated from software (with properties set as Keywords,
> rating, copyright, etc.)
>
> If you have samples to share, please use Internet Cloud repository. If
> you know place on Internet with video samples to share, to hesitate to
> share in this room.
>
> Thanks in advance for your help.
>
> Gilles Caulier
>

[Gilles Caulier-4]

Thanks...

Typically yes : The current solution working (just verified after to patch the 5.9.0 code): use XMP sidecar.

For 6.0.0, i found some dirty code in Github to update video file metadata with FFMpeg, but the code need to be re-writed.

FFMpeg is not dedicated to play with metadata but with media stream and properties (metadata in fact). Updating metadata in video want mean :

1/ the open a new temp video file.

2/ backport streams inside (video, audio, subtitles). It's a byte-array copy, no re-encode.

3/ add new metadata in streams accordingly with the data update.

4/ close temp video file and overwrite the target.

In other words, we cannot play with metadata directly in target file without to pass with a temporary file.

Gilles Caulier

2018-03-05 15:58 GMT+01:00 NeiNei <[hidden email]>:

Dear Gilles,

congrats for making this improvement possible for us!

Perhaps I did not get it, therefore just one question:
Would it be possible to also edit/write metadata like GPS position coordinates to a video clip as I could do it with JPEG photos in the Geolocation Editor?

Thanks in advance,
NeiNei

On <a href="tel:03.03.2018%2014" value="[phone]" target="_blank">03.03.2018 14:01, Gilles Caulier wrote:

Hi all,

This week, i solved a main problem with video support in digiKam with next 6.0.0.

Exiv2 video support exists, but it's completely bugous and crash digiKam quickly. This problem exists since many year now, and as nobody is motivated to fix Exiv2 video code, i used a different way to support video metadata : ffmpeg.

https://www.flickr.com/photos/digikam/39880716214/

The way to use ffmpeg as new dependency do not increase the application complexity. The dependencies puzzle still the same as use use already QtAV to play video and this one use ffmpeg in background. So digiKam depends already of ffmpeg since 5.4.0 release.

The idea to support properly video metadata is to be able to manage video medias as images. The database must be able to search video items based of video properties, taken from metadata. The search engine is already ready since a while, by the scan engine used to populate the database is not suitable as video support in Exiv2 is so far un-finalized (in video file parser).

Else, Exiv2 is well implemented to support video metadata tags, as all XMP namespace implemented by myself few years ago. So if we have a different parser to fill XMP tags from video, the problem will be solved.

And it's done with current implementation from next 6.0.0 branch. FFMPeg is able to extract most important video properties as :

make
model,
dates,
duration,
codecs,
keywords,
rating,
GPS,
etc... (and more)

i tested with my personal video collection, mostly based on MOV file generated with Apple devices (iphone, ipad) and Software (iMovies, Final cut pro). But i need more video samples :

- Video taken from Android device,
- Video taken from digital camera,
- Video generated from software (with properties set as Keywords, rating, copyright, etc.)

If you have samples to share, please use Internet Cloud repository. If you know place on Internet with video samples to share, to hesitate to share in this room.

Thanks in advance for your help.

Gilles Caulier

[AndriusWild]

Hello Gilles

You can find few samples here:

https://discuss.pixls.us/t/looking-for-video-samples/6885

Please check this thread from time to time as people might submit more.

I will send you some videos made by Android phones, GoPro camera and Pentax camera tomorrow.

Sent from my Samsung Galaxy smartphone.

-------- Original message --------

From: Gilles Caulier <[hidden email]>

Date: 2018-03-03 6:01 AM (GMT-07:00)

To: digiKam - Home Manage your photographs as a professional with the power of open source <[hidden email]>

Subject: [digiKam-users] digiKam 6.0.0 and video support : need video samples

Hi all,

This week, i solved a main problem with video support in digiKam with next 6.0.0.

Exiv2 video support exists, but it's completely bugous and crash digiKam quickly. This problem exists since many year now, and as nobody is motivated to fix Exiv2 video code, i used a different way to support video metadata : ffmpeg.

https://www.flickr.com/photos/digikam/39880716214/

The way to use ffmpeg as new dependency do not increase the application complexity. The dependencies puzzle still the same as use use already QtAV to play video and this one use ffmpeg in background. So digiKam depends already of ffmpeg since 5.4.0 release.

The idea to support properly video metadata is to be able to manage video medias as images. The database must be able to search video items based of video properties, taken from metadata. The search engine is already ready since a while, by the scan engine used to populate the database is not suitable as video support in Exiv2 is so far un-finalized (in video file parser).

Else, Exiv2 is well implemented to support video metadata tags, as all XMP namespace implemented by myself few years ago. So if we have a different parser to fill XMP tags from video, the problem will be solved.

And it's done with current implementation from next 6.0.0 branch. FFMPeg is able to extract most important video properties as :

make

model,

dates,

duration,

codecs,

keywords,

rating,

GPS,

etc... (and more)

i tested with my personal video collection, mostly based on MOV file generated with Apple devices (iphone, ipad) and Software (iMovies, Final cut pro). But i need more video samples :

- Video taken from Android device,

- Video taken from digital camera,

- Video generated from software (with properties set as Keywords, rating, copyright, etc.)

If you have samples to share, please use Internet Cloud repository. If you know place on Internet with video samples to share, to hesitate to share in this room.

Thanks in advance for your help.

Gilles Caulier

[Jürgen Blumenschein]

Hello Gilles


I will send you more videos made by Android phones, Nikon and Medion  
camera tomorrow.

Thank You for Your great work doing on digikam.
Jürgen

Zitat von Gilles Caulier <[hidden email]>:

> Hi all,
>
> This week, i solved a main problem with video support in digiKam with next
> 6.0.0.
>
> Exiv2 video support exists, but it's completely bugous and crash digiKam
> quickly. This problem exists since many year now, and as nobody is
> motivated to fix Exiv2 video code, i used a different way to support video
> metadata : ffmpeg.
>
> https://www.flickr.com/photos/digikam/39880716214/
>
> The way to use ffmpeg as new dependency do not increase the application
> complexity. The dependencies puzzle still the same as use use already QtAV
> to play video and this one use ffmpeg in background. So digiKam depends
> already of ffmpeg since 5.4.0 release.
>
> The idea to support properly video metadata is to be able to manage video
> medias as images. The database must be able to search video items based of
> video properties, taken from metadata. The search engine is already ready
> since a while, by the scan engine used to populate the database is not
> suitable as video support in Exiv2 is so far un-finalized (in video file
> parser).
>
> Else, Exiv2 is well implemented to support video metadata tags, as all XMP
> namespace implemented by myself few years ago. So if we have a different
> parser to fill XMP tags from video, the problem will be solved.
>
> And it's done with current implementation from next 6.0.0 branch. FFMPeg is
> able to extract most important video properties as :
>
> make
> model,
> dates,
> duration,
> codecs,
> keywords,
> rating,
> GPS,
> etc... (and more)
>
> i tested with my personal video collection, mostly based on MOV file
> generated with Apple devices (iphone, ipad) and Software (iMovies, Final
> cut pro). But i need more video samples :
>
> - Video taken from Android device,
> - Video taken from digital camera,
> - Video generated from software (with properties set as Keywords, rating,
> copyright, etc.)
>
> If you have samples to share, please use Internet Cloud repository. If you
> know place on Internet with video samples to share, to hesitate to share in
> this room.
>
> Thanks in advance for your help.
>
> Gilles Caulier

--
Jürgen Blumenschein, eMail: [hidden email]
Homepage: http://members.dokom.net/blumenschein
Am Quartus 17
D-44149 Dortmund
Tel.: [phone], Handy: [phone]
public key:  
http://members.dokom.net/blumenscheinJuergen_Blumenschein_(0xC9358EBB)_public_key.asc

[Jürgen Blumenschein]

Hallo to all,

sorry for sending the sample to the list.
My mistake :-(

Jürgen

----- Weitergeleitete Nachricht von Jürgen Blumenschein  
<[hidden email]> -----
      Datum: Tue, 06 Mar 2018 10:21:12 +0000
        Von: Jürgen Blumenschein <[hidden email]>
Antwort an: [hidden email]
    Betreff: Re: [digiKam-users] digiKam 6.0.0 and video support :  
need video samples
         An: digiKam - Home Manage your photographs as a professional  
with the power of open source <[hidden email]>

Hello Gilles


I will send you more videos made by Android phones, Nikon and Medion
camera tomorrow.

Thank You for Your great work doing on digikam.
Jürgen

Zitat von Gilles Caulier <[hidden email]>:

> Hi all,
>
> This week, i solved a main problem with video support in digiKam with next
> 6.0.0.
> ...
>
> Thanks in advance for your help.
>
> Gilles Caulier



--
Jürgen Blumenschein, eMail: [hidden email]
Homepage: http://members.dokom.net/blumenschein
Am Quartus 17
D-44149 Dortmund
Tel.: [phone], Handy: [phone]
public key:
http://members.dokom.net/blumenscheinJuergen_Blumenschein_(0xC9358EBB)_public_key.asc

----- Ende der weitergeleiteten Nachricht -----


--
Jürgen Blumenschein, eMail: [hidden email]
Homepage: http://members.dokom.net/blumenschein
Am Quartus 17
D-44149 Dortmund
Tel.: [phone], Handy: [phone]
public key:  
http://members.dokom.net/blumenscheinJuergen_Blumenschein_(0xC9358EBB)_public_key.asc

[Gilles Caulier-4]

Excelent. Thanks a lots.

Gilles Caulier

2018-03-06 11:21 GMT+01:00 Jürgen Blumenschein <[hidden email]>:

Hello Gilles


I will send you more videos made by Android phones, Nikon and Medion camera tomorrow.

Thank You for Your great work doing on digikam.
Jürgen

Zitat von Gilles Caulier <[hidden email]>:

Hi all,

This week, i solved a main problem with video support in digiKam with next
6.0.0.

Exiv2 video support exists, but it's completely bugous and crash digiKam
quickly. This problem exists since many year now, and as nobody is
motivated to fix Exiv2 video code, i used a different way to support video
metadata : ffmpeg.

https://www.flickr.com/photos/digikam/39880716214/

The way to use ffmpeg as new dependency do not increase the application
complexity. The dependencies puzzle still the same as use use already QtAV
to play video and this one use ffmpeg in background. So digiKam depends
already of ffmpeg since 5.4.0 release.

The idea to support properly video metadata is to be able to manage video
medias as images. The database must be able to search video items based of
video properties, taken from metadata. The search engine is already ready
since a while, by the scan engine used to populate the database is not
suitable as video support in Exiv2 is so far un-finalized (in video file
parser).

Else, Exiv2 is well implemented to support video metadata tags, as all XMP
namespace implemented by myself few years ago. So if we have a different
parser to fill XMP tags from video, the problem will be solved.

And it's done with current implementation from next 6.0.0 branch. FFMPeg is
able to extract most important video properties as :

make
model,
dates,
duration,
codecs,
keywords,
rating,
GPS,
etc... (and more)

i tested with my personal video collection, mostly based on MOV file
generated with Apple devices (iphone, ipad) and Software (iMovies, Final
cut pro). But i need more video samples :

- Video taken from Android device,
- Video taken from digital camera,
- Video generated from software (with properties set as Keywords, rating,
copyright, etc.)

If you have samples to share, please use Internet Cloud repository. If you
know place on Internet with video samples to share, to hesitate to share in
this room.

Thanks in advance for your help.

Gilles Caulier

--
Jürgen Blumenschein, eMail: [hidden email]
Homepage: http://members.dokom.net/blumenschein
Am Quartus 17
D-44149 Dortmund
Tel.: <a href="tel:%2B49%20231%207217321" value="[phone]" target="_blank">[phone], Handy: <a href="tel:%2B49%20176%205591%204562" value="[phone]" target="_blank">[phone]
public key: http://members.dokom.net/blumenscheinJuergen_Blumenschein_(0xC9358EBB)_public_key.asc

[AndriusWild]

Gilles,

Here is some samples made by Android 6 and Android 7.
https://drive.google.com/drive/folders/1QbDTxZxsDhnUAbUY4uLOhanhfM4qVNW7?usp=sharing

I also played with Windows Explorer, VLC and Dolphin to see which tags are more cross platform.

It turned out that Microsoft uses some [Microsoft] tags which are not being recognized by VLC or Dolphin.

[QuickTime]     Title                           : Android 6.0.1 tags by Windows
[QuickTime]     Comment                         : comment should be here

[Microsoft]     SharedUserRating                : 50
[Microsoft]     Subtitle                        : Subtitle should be here                    
[Microsoft]     Category                        : digikam, test, andrey   

VLC sees:
[QuickTime]     Title                           : Android 6.0.1 tags by Windows
[QuickTime]     Comment                         : comment should be here

Dolphin sees:
[QuickTime]     Title

as well as Album, Genre, etc.

but Dolphin does not see:
[QuickTime]     Comment 

I was not able to figure out which tag does Dolphin see as "Comment" in the Preview Panel
Neither was I able to find out how to write tags(keywords) and rating using ffmpeg.

But I think the last one can be fixed, see here: https://lists.ffmpeg.org/pipermail/ffmpeg-user/2017-July/036575.html

On Tue, Mar 6, 2018 at 8:31 AM, Gilles Caulier <[hidden email]> wrote:

Excelent. Thanks a lots.

Gilles Caulier

2018-03-06 11:21 GMT+01:00 Jürgen Blumenschein <[hidden email]>:

Hello Gilles


I will send you more videos made by Android phones, Nikon and Medion camera tomorrow.

Thank You for Your great work doing on digikam.
Jürgen

Zitat von Gilles Caulier <[hidden email]>:

Hi all,

This week, i solved a main problem with video support in digiKam with next
6.0.0.

Exiv2 video support exists, but it's completely bugous and crash digiKam
quickly. This problem exists since many year now, and as nobody is
motivated to fix Exiv2 video code, i used a different way to support video
metadata : ffmpeg.

https://www.flickr.com/photos/digikam/39880716214/

The way to use ffmpeg as new dependency do not increase the application
complexity. The dependencies puzzle still the same as use use already QtAV
to play video and this one use ffmpeg in background. So digiKam depends
already of ffmpeg since 5.4.0 release.

The idea to support properly video metadata is to be able to manage video
medias as images. The database must be able to search video items based of
video properties, taken from metadata. The search engine is already ready
since a while, by the scan engine used to populate the database is not
suitable as video support in Exiv2 is so far un-finalized (in video file
parser).

Else, Exiv2 is well implemented to support video metadata tags, as all XMP
namespace implemented by myself few years ago. So if we have a different
parser to fill XMP tags from video, the problem will be solved.

And it's done with current implementation from next 6.0.0 branch. FFMPeg is
able to extract most important video properties as :

make
model,
dates,
duration,
codecs,
keywords,
rating,
GPS,
etc... (and more)

i tested with my personal video collection, mostly based on MOV file
generated with Apple devices (iphone, ipad) and Software (iMovies, Final
cut pro). But i need more video samples :

- Video taken from Android device,
- Video taken from digital camera,
- Video generated from software (with properties set as Keywords, rating,
copyright, etc.)

If you have samples to share, please use Internet Cloud repository. If you
know place on Internet with video samples to share, to hesitate to share in
this room.

Thanks in advance for your help.

Gilles Caulier

--
Jürgen Blumenschein, eMail: [hidden email]
Homepage: http://members.dokom.net/blumenschein
Am Quartus 17
D-44149 Dortmund
Tel.: <a href="tel:%2B49%20231%207217321" value="[phone]" target="_blank">[phone], Handy: <a href="tel:%2B49%20176%205591%204562" value="[phone]" target="_blank">[phone]
public key: http://members.dokom.net/blumenscheinJuergen_Blumenschein_(0xC9358EBB)_public_key.asc

[Gilles Caulier-4]

Great, i will analyze your video files.

I don't know that VLC is able to tag video files.I will take a look how it's done in background.

Best

Gilles Caulier

2018-03-06 17:15 GMT+01:00 Andrey Goreev <[hidden email]>:

Gilles,

Here is some samples made by Android 6 and Android 7.
https://drive.google.com/drive/folders/1QbDTxZxsDhnUAbUY4uLOhanhfM4qVNW7?usp=sharing

I also played with Windows Explorer, VLC and Dolphin to see which tags are more cross platform.

It turned out that Microsoft uses some [Microsoft] tags which are not being recognized by VLC or Dolphin.

[QuickTime]     Title                           : Android 6.0.1 tags by Windows
[QuickTime]     Comment                         : comment should be here

[Microsoft]     SharedUserRating                : 50
[Microsoft]     Subtitle                        : Subtitle should be here                    
[Microsoft]     Category                        : digikam, test, andrey   

VLC sees:
[QuickTime]     Title                           : Android 6.0.1 tags by Windows
[QuickTime]     Comment                         : comment should be here

Dolphin sees:
[QuickTime]     Title

as well as Album, Genre, etc.

but Dolphin does not see:
[QuickTime]     Comment 

I was not able to figure out which tag does Dolphin see as "Comment" in the Preview Panel
Neither was I able to find out how to write tags(keywords) and rating using ffmpeg.

But I think the last one can be fixed, see here: https://lists.ffmpeg.org/pipermail/ffmpeg-user/2017-July/036575.html

On Tue, Mar 6, 2018 at 8:31 AM, Gilles Caulier <[hidden email]> wrote:

Excelent. Thanks a lots.

Gilles Caulier

2018-03-06 11:21 GMT+01:00 Jürgen Blumenschein <[hidden email]>:

Hello Gilles


I will send you more videos made by Android phones, Nikon and Medion camera tomorrow.

Thank You for Your great work doing on digikam.
Jürgen

Zitat von Gilles Caulier <[hidden email]>:

Hi all,

This week, i solved a main problem with video support in digiKam with next
6.0.0.

Exiv2 video support exists, but it's completely bugous and crash digiKam
quickly. This problem exists since many year now, and as nobody is
motivated to fix Exiv2 video code, i used a different way to support video
metadata : ffmpeg.

https://www.flickr.com/photos/digikam/39880716214/

The way to use ffmpeg as new dependency do not increase the application
complexity. The dependencies puzzle still the same as use use already QtAV
to play video and this one use ffmpeg in background. So digiKam depends
already of ffmpeg since 5.4.0 release.

The idea to support properly video metadata is to be able to manage video
medias as images. The database must be able to search video items based of
video properties, taken from metadata. The search engine is already ready
since a while, by the scan engine used to populate the database is not
suitable as video support in Exiv2 is so far un-finalized (in video file
parser).

Else, Exiv2 is well implemented to support video metadata tags, as all XMP
namespace implemented by myself few years ago. So if we have a different
parser to fill XMP tags from video, the problem will be solved.

And it's done with current implementation from next 6.0.0 branch. FFMPeg is
able to extract most important video properties as :

make
model,
dates,
duration,
codecs,
keywords,
rating,
GPS,
etc... (and more)

i tested with my personal video collection, mostly based on MOV file
generated with Apple devices (iphone, ipad) and Software (iMovies, Final
cut pro). But i need more video samples :

- Video taken from Android device,
- Video taken from digital camera,
- Video generated from software (with properties set as Keywords, rating,
copyright, etc.)

If you have samples to share, please use Internet Cloud repository. If you
know place on Internet with video samples to share, to hesitate to share in
this room.

Thanks in advance for your help.

Gilles Caulier

--
Jürgen Blumenschein, eMail: [hidden email]
Homepage: http://members.dokom.net/blumenschein
Am Quartus 17
D-44149 Dortmund
Tel.: <a href="tel:%2B49%20231%207217321" value="[phone]" target="_blank">[phone], Handy: <a href="tel:%2B49%20176%205591%204562" value="[phone]" target="_blank">[phone]
public key: http://members.dokom.net/blumenscheinJuergen_Blumenschein_(0xC9358EBB)_public_key.asc

[AndriusWild]

Open video in VLC then press Ctrl + i

If you have an apple computer please try to add rating and keywords in either iTunes or QuickTime player and check with exiftool/mediainfo/ffmpeg where the metadata is written.

On Tue, Mar 6, 2018 at 9:23 AM, Gilles Caulier <[hidden email]> wrote:

Great, i will analyze your video files.

I don't know that VLC is able to tag video files.I will take a look how it's done in background.

Best

Gilles Caulier

2018-03-06 17:15 GMT+01:00 Andrey Goreev <[hidden email]>:

Gilles,

Here is some samples made by Android 6 and Android 7.
https://drive.google.com/drive/folders/1QbDTxZxsDhnUAbUY4uLOhanhfM4qVNW7?usp=sharing

I also played with Windows Explorer, VLC and Dolphin to see which tags are more cross platform.

It turned out that Microsoft uses some [Microsoft] tags which are not being recognized by VLC or Dolphin.

[QuickTime]     Title                           : Android 6.0.1 tags by Windows
[QuickTime]     Comment                         : comment should be here

[Microsoft]     SharedUserRating                : 50
[Microsoft]     Subtitle                        : Subtitle should be here                    
[Microsoft]     Category                        : digikam, test, andrey   

VLC sees:
[QuickTime]     Title                           : Android 6.0.1 tags by Windows
[QuickTime]     Comment                         : comment should be here

Dolphin sees:
[QuickTime]     Title

as well as Album, Genre, etc.

but Dolphin does not see:
[QuickTime]     Comment 

I was not able to figure out which tag does Dolphin see as "Comment" in the Preview Panel
Neither was I able to find out how to write tags(keywords) and rating using ffmpeg.

But I think the last one can be fixed, see here: https://lists.ffmpeg.org/pipermail/ffmpeg-user/2017-July/036575.html

On Tue, Mar 6, 2018 at 8:31 AM, Gilles Caulier <[hidden email]> wrote:

Excelent. Thanks a lots.

Gilles Caulier

2018-03-06 11:21 GMT+01:00 Jürgen Blumenschein <[hidden email]>:

Hello Gilles


I will send you more videos made by Android phones, Nikon and Medion camera tomorrow.

Thank You for Your great work doing on digikam.
Jürgen

Zitat von Gilles Caulier <[hidden email]>:

Hi all,

This week, i solved a main problem with video support in digiKam with next
6.0.0.

Exiv2 video support exists, but it's completely bugous and crash digiKam
quickly. This problem exists since many year now, and as nobody is
motivated to fix Exiv2 video code, i used a different way to support video
metadata : ffmpeg.

https://www.flickr.com/photos/digikam/39880716214/

The way to use ffmpeg as new dependency do not increase the application
complexity. The dependencies puzzle still the same as use use already QtAV
to play video and this one use ffmpeg in background. So digiKam depends
already of ffmpeg since 5.4.0 release.

The idea to support properly video metadata is to be able to manage video
medias as images. The database must be able to search video items based of
video properties, taken from metadata. The search engine is already ready
since a while, by the scan engine used to populate the database is not
suitable as video support in Exiv2 is so far un-finalized (in video file
parser).

Else, Exiv2 is well implemented to support video metadata tags, as all XMP
namespace implemented by myself few years ago. So if we have a different
parser to fill XMP tags from video, the problem will be solved.

And it's done with current implementation from next 6.0.0 branch. FFMPeg is
able to extract most important video properties as :

make
model,
dates,
duration,
codecs,
keywords,
rating,
GPS,
etc... (and more)

i tested with my personal video collection, mostly based on MOV file
generated with Apple devices (iphone, ipad) and Software (iMovies, Final
cut pro). But i need more video samples :

- Video taken from Android device,
- Video taken from digital camera,
- Video generated from software (with properties set as Keywords, rating,
copyright, etc.)

If you have samples to share, please use Internet Cloud repository. If you
know place on Internet with video samples to share, to hesitate to share in
this room.

Thanks in advance for your help.

Gilles Caulier

--
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Homepage: http://members.dokom.net/blumenschein
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D-44149 Dortmund
Tel.: <a href="tel:%2B49%20231%207217321" value="[phone]" target="_blank">[phone], Handy: <a href="tel:%2B49%20176%205591%204562" value="[phone]" target="_blank">[phone]
public key: http://members.dokom.net/blumenscheinJuergen_Blumenschein_(0xC9358EBB)_public_key.asc

[Gilles Caulier-4]

Hi all users,

Just a fresh feedback from the video management support in next digiKam 6.0.0.

Since we switch all video metadata suport from Exiv2 to FFmpeg, we boost the application to another space.

I tested with my big collection of video (MP4, MOV, MKV, AVI - more than 3000 items), and i can said that scan on multi-core is fast and stable. The video metadata extraction is powerful and populate properly the database with the suitable information to perform a video search.

All video format supported by FFMpeg will be registered to the database. The metadata extraction is optimum for MP4 and MOV, and today i finalized the wrap of RIFF files metadata to database (AVI and more).

https://en.wikipedia.org/wiki/Resource_Interchange_File_Format

Note : WebP image format from Google dedicated to use on internet is also a RIFF based container, so it will be automatically supported in digiKam.

The MKV metadata support is partial and i plan to optimize this part in the future.

https://en.wikipedia.org/wiki/Matroska

Note : The HTML5 video format WebM from google based on Matroska will be also automatically supported by digiKam.

This is a search view screenshot over my database :

https://www.flickr.com/photos/digikam/40743725771/in/pool-digikam-labs/

This want mean that i need again more video file sample taken with camera, cellular, or created with linear video editing application, even if the test collection growing up quickly:

https://drive.google.com/drive/folders/10-SJNtJZZQd_LIchfav-YQ9a-pNsQStT

The orientation of video is very important because we are now able to extract the rotation flag from metadata and adjust automatically the video accordingly while playing. So video taken in vertical mode will be a plus to test this feature.

I need especially AVI, MKV, and other exotic video formats as 3GP, FLV for ex.

This is very import to explain how the file have been captured/generated, as to list the device and software used in production process.

Thanks in advance for your help.

Gilles Caulier

2018-03-03 14:01 GMT+01:00 Gilles Caulier <[hidden email]>:

Hi all,

This week, i solved a main problem with video support in digiKam with next 6.0.0.

Exiv2 video support exists, but it's completely bugous and crash digiKam quickly. This problem exists since many year now, and as nobody is motivated to fix Exiv2 video code, i used a different way to support video metadata : ffmpeg.

https://www.flickr.com/photos/digikam/39880716214/

The way to use ffmpeg as new dependency do not increase the application complexity. The dependencies puzzle still the same as use use already QtAV to play video and this one use ffmpeg in background. So digiKam depends already of ffmpeg since 5.4.0 release.

The idea to support properly video metadata is to be able to manage video medias as images. The database must be able to search video items based of video properties, taken from metadata. The search engine is already ready since a while, by the scan engine used to populate the database is not suitable as video support in Exiv2 is so far un-finalized (in video file parser).

Else, Exiv2 is well implemented to support video metadata tags, as all XMP namespace implemented by myself few years ago. So if we have a different parser to fill XMP tags from video, the problem will be solved.

And it's done with current implementation from next 6.0.0 branch. FFMPeg is able to extract most important video properties as :

make

model,

dates,

duration,

codecs,

keywords,

rating,

GPS,

etc... (and more)

i tested with my personal video collection, mostly based on MOV file generated with Apple devices (iphone, ipad) and Software (iMovies, Final cut pro). But i need more video samples :

- Video taken from Android device,

- Video taken from digital camera,

- Video generated from software (with properties set as Keywords, rating, copyright, etc.)

If you have samples to share, please use Internet Cloud repository. If you know place on Internet with video samples to share, to hesitate to share in this room.

Thanks in advance for your help.

Gilles Caulier

[woenx]

Hi Gilles,

I uploaded a few video samples of my cameras and phones. I hope you find
them useful.

Here's the link:
https://drive.google.com/open?id=1kvN2V-Cai_e0cB0e82tua5NsH_0-bpMk

And here's the filename - device correspondence (also found in the
Samples.txt file in that folder):

00006.MTS Panasonic DMC-FZ38

MOV01633.MPG (and THM) Sony DSC-T7

MOV02792.MPG Sony DSC-W7 (possibly with a THM file, now lost)

18032008.MP4 Nokia 6120c (Symbian v9.2)

video-2010-03-08-15-09-44.3gp HTC Magic (Android 1.6)

VIDEO0002.3gp HTC Wildfire S (Android 2.2)

VID_20140517_150144.MP4 Nexus S (Android 4.0)

VID_20150724_232658.MP4 Nexus 4 (Android 5.1)

VID_20161216_224527.mp4 Yotaphone 2 (Android 6)


PS: I'll probably delete that folder in a few months, so better copy these
samples elsewhere just to be safe.




--
Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-f1735189.html

[Gilles Caulier-4]

Just copied. Great. All files are backported to digiKam 6.0.0 database.

Thanks

Gilles Caulier

2018-03-14 20:53 GMT+01:00 woenx <[hidden email]>:

Hi Gilles,

I uploaded a few video samples of my cameras and phones. I hope you find
them useful.

Here's the link:
https://drive.google.com/open?id=1kvN2V-Cai_e0cB0e82tua5NsH_0-bpMk

And here's the filename - device correspondence (also found in the
Samples.txt file in that folder):

00006.MTS                                       Panasonic DMC-FZ38

MOV01633.MPG (and THM)                  Sony DSC-T7

MOV02792.MPG                                    Sony DSC-W7 (possibly with a THM file, now lost)

18032008.MP4                                    Nokia 6120c (Symbian v9.2)

video-2010-03-08-15-09-44.3gp           HTC Magic (Android 1.6)

VIDEO0002.3gp                                   HTC Wildfire S (Android 2.2)

VID_20140517_150144.MP4                 Nexus S (Android 4.0)

VID_20150724_232658.MP4                 Nexus 4 (Android 5.1)

VID_20161216_224527.mp4                 Yotaphone 2 (Android 6)


PS: I'll probably delete that folder in a few months, so better copy these
samples elsewhere just to be safe.




--
Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-f1735189.html