- From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
- Date: Tue, 29 Nov 2011 10:39:00 +1100
- To: Christian Vogler <christian.vogler@gallaudet.edu>
- Cc: Ian Hickson <ian@hixie.ch>, public-texttracks@w3.org
On Tue, Nov 29, 2011 at 10:36 AM, Christian Vogler <christian.vogler@gallaudet.edu> wrote: >> That's like ten times more annoying to read than the normal captions on >> that video. I think if we are to support roll-up captions we need a far >> more convincing use case. > > Two points in response: > > 1. Roll-up captions are essential for live captioning where the text > is transmitted as the captioner types, especially when steno errors > and subsequent corrections are factored in. Another issue is the > sheer number of words per minute during live captioning, where without > roll-up you would end up missing the context half of the time. This > usage scenario is very common during live broadcasts in the United > States, where captions are not only roll-up, but also appear word by > word, instead of line by line. I'll check around if I can find a video > clip that shows this clearly. > > 2. The implementation of roll-up in this video is poor. The > positioning and alignment jumps around with every roll up, which of > course makes it very hard to read. > > Now come to think of it, a corollary is that roll-up support by itself > is not sufficient. You also need a way to paste on captions live word > by word for it to be truly useful. WebVTT has support for the paint-on style with the time markers. Every word can be revealed at a different time. Silvia.
Received on Monday, 28 November 2011 23:39:50 UTC