[linux-dvb] Re: replay control in general

[Stefan Huelswitt <huels@iname.com>]

On 26 Jul 2001 Matthias Weingart <matthias@pentax.boerde.de> wrote:

> A nice feature - 2x,3x times slower replay - if we make it
> slower, we also should think to make it faster too (skip some I-frames).

Yes, this would be an option, too.

>> I also think that it would be nice to have 2 or 3 speeds for fast
>> forward/rewind. Currently only I-frames are displayed what should
>> give roughly 12x speed. I found it difficult to stop at the right
>> position if searching through a recording.
> 
> Maybe that is a problem with buffering. It is playing all it have in the
> buffer, as well after releasing the key, so you will jump to far. A question

You may be right. If you stops fast-forward there is a small
delay until replay continues. This may be where the buffers are
filled.

>> What if vdr would display every I-frame 4 times -> would give 3x speed;
>> 2 times -> 6 speed.
> 
> This is another question: Does vdr play that I frames 
> (1) with a certain (say 25fps) speed or 
> (2) only as fast as it can? 

As I see from the source, vdr is delivering the
i-frames as fast as possible, but I don't at which speed the
driver display them.

-- 
Stefan Huelswitt
huels@iname.com  | http://home.pages.de/~nathan


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