[Xerte] Inclusion of close captions onvideofiles anduseofplaylists

Wed Apr 22 19:46:07 BST 2009

Hi all,

Captions not always working.

Thanks Julian for making this timedtext sample- it gave me a great
start for captioning some videos but in testing on the server I ran
into an issue-  the captions don't always display if the user starts
the video playing before the xml file is loaded. If I wait for the
video to download first, the captions work fine. On the local machine
I did not run into this issue- perhaps the solution is obvious and
I've overlooked it?

How may I ensure the XML file loads first?

Best regards,

Bill Laakkonen

On Tue, Mar 24, 2009 at 5:47 AM, Julian Tenney
<Julian.Tenney at nottingham.ac.uk> wrote:
> I need to understand more about the timedText standard that the close
> caption files the JW player use are based on. timedText seems to be an
> emerging standard for marking up text with synching information. It's
> attractive because hopefully there will be other tools available that
> can handle the marking up and creation of the files, and possibly
> services such as translation made available by other parties. I built a
> very simple mockup of the basics yesterday:
>
> http://www.nottingham.ac.uk/~cczjrt/timedText.zip
>
> Which shows how to load an xml file (the timedText.xml) and use the
> information in it to set up cue points in the .flv, and then respond to
> those events and show the appropriate piece of text. You'll need to
> reinstall Xerte from the website to make this work as I made a small
> change to the engine to better handle the events from the Movie icon.
>
> The example shows how easy - and simple - this is to do in Xerte. There
> are 8 lines of code.
>
> There's a bit to do to fully support timedText though as it has a number
> of ways of marking up the synching information, and can support multiple
> simulataneous captions, and probably quite a bit more. Maybe this gives
> folk something to start with,
>
> J
>
>
>
> -----Original Message-----
> From: xerte-bounces at lists.nottingham.ac.uk
> [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Johnathan
> Kemp
> Sent: Tuesday, March 24, 2009 9:16 AM
> To: ea at emptech.info; Xerte discussion list
> Subject: RE: [Xerte] Inclusion of close captions onvideofiles
> anduseofplaylists
>
> Regarding a comparison of the accessibility of the JWFLV player as
> compared to the player in Xerte, you may well be right regarding
> keyboard users, I would not claim to be an expert regarding
> accessibility issues. One of the many attractions for me of Xerte are
> the accessibility features that are built in to it.
>
> I have a requirement for taking video footage of interviews and editing
> the footage down into discrete chunks that demonstrate different stages
> of the interview, e.g. introducing yourself, contracting, challenging,
> summarising etc. By using play lists I could re-use the chunks in
> different learning objects, e.g. one object could deliver a complete
> interview, another different examples of contracting, etc.
>
> My current very limited knowledge of Flash and my previous experience of
> using the JWFLV player tended me towards a solution that would enable
> the JWFLV player to be called in Xerte and passed the play list which in
> turn would identify the FLV files and close caption files to include.
> Any solution that provided a similar capability in Xerte would be
> wonderful.
>
> I am in the middle of launching a Company wide VLE based on Moodle at
> the moment. Hopefully when this settles down I will get a chance to look
> at the recent work that Julian has put into enhancing the FLV player in
> Xerte. However I have to stress my Flash skills are limited, though I
> think having now discovered Xerte the case for my getting to know Flash
> is now overwhelming.
>
> Kind regards
>
> Johnathan
>
>
> Johnathan Kemp
> IT Dev. Manager
> Connexions Staffordshire
> www.cxstaffs.co.uk
> 01785 355714
>
>
>
>
>
> -----Original Message-----
> From: xerte-bounces at lists.nottingham.ac.uk
> [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of E.A. Draffan
> Sent: 23 March 2009 20:52
> To: 'Xerte discussion list'
> Subject: RE: [Xerte] Inclusion of close captions on videofiles
> anduseofplaylists
>
> Sorry to ask but are you sure JWPlayer will be as accessible as the
> XERTE option from the point of view of a keyboard users?  We have had to
> add HTML tags to make sure it is accessible in all browsers such as
> Firefox, Opera, Google Chrome and Safari. The keyboard access works in
> Internet Explorer but not always in the other browsers. See example
> http://www.lexdis.org/strategy/62  Our method of handling the difficulty
> is fairly basic but I am not sure if there is another option at the
> moment.  I know folks in Washington University have been looking at the
> same issue.
>
> Best wishes E.A.
>
> Mrs E.A. Draffan
> Learning Societies Lab,
> ECS, University of Southampton,
> Tel +44 (0)23 8059 7246
> http://www.lexdis.ecs.soton.ac.uk
> http://www.emptech.info
>
>
> -----Original Message-----
> From: xerte-bounces at lists.nottingham.ac.uk
> [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Julian Tenney
> Sent: 23 March 2009 12:12
> To: Xerte discussion list
> Subject: RE: [Xerte] Inclusion of close captions on video files
> anduseofplaylists
>
> Yes, it could be done, I am sure. I'd be happy to provide some support
> to ayone wanting to have  go at it, but I'm a bit busy to take it on
> myself at the minute. Presumably if you could play FLVs and give them
> captions etc, you woulnd't need the JW player? Just build a similar
> solution in Xerte?
> There would be little point in recreating the JW player, if that's all
> that's required, but if you wanted to integrate more sophisticated FLV
> support with alll the other features of Xerte then it might be worth it.
>
>
>
>
> Ulimately what would be great is to have a 'captionFile' property on the
> Movie icon, point it to a caption file, and then have the movie icon
> fire an onCaption event everytime a new caption point is encountered.
>
>
>
>
>
> From: xerte-bounces at lists.nottingham.ac.uk
> [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Johnathan
> Kemp
> Sent: Monday, March 23, 2009 12:03 PM
> To: Xerte discussion list
> Subject: RE: [Xerte] Inclusion of close captions on video files
> anduseofplaylists
>
>
>
> Hello Julian,
>
>
>
> The JWFLV video player uses an xml configuration file, an xml playlist
> file (which identifies the flv file and the close caption file to play
> for each entry in the playlist) and separate xml close caption files
> which are in a format unique to the JWFLV player. The makers of the
> jwflv player supply a module that can be loaded into subtitle workshop
> (free software) to generate the close captions in the necessary format.
> If you have other software e.g. aegissub (also free, but which I found
> easier to use than subtitle workshop) then you can output close caption
> files in the .ass format. Subtitle workshop can import these and then
> convert them to JWFLV format.
>
>
>
> >From what you say I suspect it would be achievable to call the jwflv
>>player
> from within xerte.
>
>
>
> I have been able to set up both coldfusion code and php code to call the
> flvplayer and pass it the necessary parameters, so I guess it is now
> down to my improving my action scripting and understanding of Xerte.
>
>
>
> I am looking forward to your forthcoming online tutorial on Friday 3rd.
> I may not be able to be there live, but there's always the recording :-)
>
>
>
> Kind regards
>
>
>
> Johnathan
>
>
>
>
>
>
>
> Johnathan Kemp
> IT Dev. Manager
> Connexions Staffordshire
> www.cxstaffs.co.uk <http://www.cxstaffs.co.uk/>
> 01785 355714
>
>
>
>
>
>
>
> ________________________________
>
> From: xerte-bounces at lists.nottingham.ac.uk
> [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Julian Tenney
> Sent: 20 March 2009 10:27
> To: Xerte discussion list
> Subject: RE: [Xerte] Inclusion of close captions on video files and
> useofplaylists
>
> The play list is just an xml file, so Xerte could easily enough load it
> and create a list of items, that when clicked loaded and flv into the
> player.
>
>
>
> Synching up the display of captions to the playback of the video would
> mean tracking the current playhead time in the video and showing the
> caption. I assume that the caption file is also xml, something like
> this:
>
>
>
> <captions>
>
>  <caption time="00:12"><![CDATA[Here is a caption</caption>
>
> </captions>
>
>
>
> Which is all the inforamtion you'd need to also support them,
>
>
>
> From: xerte-bounces at lists.nottingham.ac.uk
> [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Johnathan
> Kemp
> Sent: Thursday, March 19, 2009 5:14 PM
> To: xerte at lists.nottingham.ac.uk
> Subject: [Xerte] Inclusion of close captions on video files and use
> ofplaylists
>
>
>
> Prior to looking at Xerte I have been experimenting with the jwflv
> player, which is free for non-commercial use and has a modest licence
> fee for commercial use.
>
>
>
> This is flash based and allows for the playing of flv files, with
> support for the use of playlists and close caption files.
>
>
>
> Is there any support within Xerte for the use of playlists or close
> caption files?
>
>
>
> If not has anyone looked at the possibility of calling the jwflv player
> from within Xerte?
>
>
>
> Kind regards
>
>
>
> Johnathan
>
>
>
> Johnathan Kemp
> IT Dev. Manager
> Connexions Staffordshire
> www.cxstaffs.co.uk <http://www.cxstaffs.co.uk/>
> 01785 355714
>
>
>
>
>
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