Playing sound files

Peter Bogdanoff bogdanoff at me.com
Sun Apr 24 07:59:41 CEST 2016


You can do timed subtitles now using callbacks—if you want the text to display outside the player, like in a field. 

Look up “callbacks" in the dictionary. Basically you build a list with lines like this:

	<time>,<command>

When the player reaches that time it sends that command.

The handler that receives the command has the job of putting the appropriate text into the field.

QuickTime has always had the ability to display subtitles (“text track”) directly in a player video window. I don’t think AV Foundation does that.

Peter Bogdanoff
UCLA


On Apr 23, 2016, at 8:15 PM, Sannyasin Brahmanathaswami <brahma at hindu.org> wrote:

> Panos: 
> 
> I will throw in an  important use case here as we need LC to move forward to gain parity with the world of audio and video that runs in sync with
> 
> 1) subtitling
> 2) full transcript
> 3) song lyrics
> 
> This requires a backend where subtitles/yrics/transcripts are timecoded “along the way” so to speak, so that as the narration (audio or video) progresses, the visual text elements (presentation varies, on screen… a field off to the right of the video etc.  below the player… 
> 
> So, whatever you do… make sure that we can support this on all platforms w/o quicktime
> 
> Been waiting “decades” …that’s an exaggeration.. Just 17 years… not decades. We might even be able to give SMIL a kick (he’s been asleep since 2008) and make it useful again.
> 
> Imagine this + sound
> 
> https://upload.wikimedia.org/wikipedia/commons/9/9b/SMIL_missile_demo.svg
> 
> BR
> 
> 
> 
> On 4/23/16, 9:34 AM, "use-livecode on behalf of panagiotis merakos" <use-livecode-bounces at lists.runrev.com on behalf of merakosp at gmail.com> wrote:
> 
>> 
>> *>>>A related question: One thing I currently use when saving files as
>> QuickTime is Fast Start (Prepare for Internet Streaming). This allows files
>> to start playing before they are completely downloaded. Will the new
>> Windows player support some kind of streaming format like this?*All I can
>> say now is that implementing a Windows player is of higher priority than is
>> was before, and we will give our best to make the new Windows player to
>> provide the full functionality as before, without relying to QuickTime.
>> 
>> Best,
>> Panos
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