Philippe N. wrote:
Back on the player creation issue, we digged into the issue; we are
pretty much convinced that it is related to Java FX and not XXE. Below
some details about our findings, hoping that it will be useful.
The cause of the issue seems more complicated to understand than we
first thought…
Yes. That's right. I tried to reproduce the problem on Linux, Windows 7
and Windows 10 using the steps you explained us in your previous email
and didn't manage to do it.
It worked really well for me on all the above platforms (all using
Oracle Java 1.8.0_121 64-Bit).
As you mentioned, the Ogg format is not supported by Java FX, but we get
a clear and non-ambiguous exception about unrecognized formats:
javafx.scene.media.MediaException: Unrecognized file signature
Yes, this is not really a problem. Even Web browsers do this. Suffice to
also specify alternate video files having a different format.
The exception we got with supported video formats (like
$XXE/doc/dita/images/video.mp4) is a different one, it runs: "Could not
create player".
What confused us is that when this happens, *all players embedded in
XXE* suddenly appear in error, including those that were previously OK...
The question is why this "Could not create player" exception happens ?
It is not related to video formats as far as we could see.
It seems that depending on the video file location, the Java FX player
fails to be created correctly with this exception. Once it fails, it has
an incidence on all players embedded in XXE; we get another FX
exception in this case: "[] ERROR_MEDIA_CREATION: ERROR MEDIA CREATION".
Something that is reproducible in our location:
*On Windows:* if we use the *.mp4 files you sent us, or those from
http://xmlmind.com, or from $XXE/doc/dita/images, it works fine: the
Java FX player is correctly created. If instead of using these
locations, we copy the exact same files on our Linux file servers and
access them through a Samba server, it ceases to work and we get the
exception that we first reported.
*On Linux:* the problem shows up systematically and we can't never get
a working Java FX player; but oddly enough, if we try to use the
*create_doc.mp4* file located on your Website, we get an empty grey box
instead of the instantiated player, and no exception...
If we download this file locally and use it instead of the remote
version, we get the exception back...
Our understanding is that there is a subtle issue with Java Fx player,
linked to the storage devices characteristics. It shows up on both
Windows and Linux, but only when using our Linux driven data storage
systems...
For Linux, I have no clue. Our embedded media player works really well
on my openSUSE Linux box, albeit with media files stored on a local ext4
file system and no samba server running on my Linux box.
For Windows and its Samba-based shared folder, I may have an idea.
How do you specify the URL of the media file stored on the Samba server?
Is it something like:
file:/Z:/videos/video.mp4
or something like:
file:///Z:/videos/video.mp4
or something like:
file://my_shared_folder/videos/video.mp4
To be sure, please test each of the above string forms by typing them in
the media dialog box. I mean, please do not rely on XXE's file chooser.
XXE supports all the above string forms, but may be NOT JavaFX (which
must be passed URLs in string form).
I attached the information from XXE, but with little hope
that it can help you…
Attached file indeed looks fine.
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