[vorbis-dev] granulepos start/end revisited

Silvia Pfeiffer Silvia.Pfeiffer at csiro.au
Sun May 23 23:21:09 PDT 2004



No, offense, but I do believe there is a need for exact durations and 
for the flexibility to insert subtitles on the fly during live 
productions. And I've worked with a captioning company before and they 
were very picky on exactness of timing.

Silvia.

Arc Riley wrote:
> On Mon, May 24, 2004 at 12:28:32PM +1000, Silvia Pfeiffer wrote:
> 
>>I disagree. It's far better not to have to know in advance when the 
>>subtitle has to stop, because if you want to use it for *life* 
>>subtitling (as in the evening news), you don't actually know how long a 
>>speaker is going to talk for. :)
> 
> 
> I've never personally done live transcription before, but I have worked 
> in studios where this has been done and I know from seeing how they do 
> it that there's no such thing as "release this phrase now".  They don't 
> care, nor have time, to do that.
> 
> If you're doing live then the delay is going to be something reasonable 
> with older text automatically bumped off the window.  This is a 
> non-issue.  The transcriptionists are not going to even select the 
> duration of each phrase seperatly, but are going to have some 
> system-wide default length.
> 
> The same holds true for other forms of live speech, too.  The only time 
> that exact durations are nessesary are for anal retentive producers of 
> movies or for song lyrics whereas the length of the phrase on the screen 
> helps the viewer get an idea of what the music is like, or something.
> 
> If someone really wants to have live control over the duration of a 
> piece of text they can simply use small repetitive clips, redefining the 
> window to length it as needed/wanted.  This case is going to be so rare 
> that special support for it doesn't need to be in the spec.
> 
> 
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