[Mp4-tech] [Video] [systems] Rewind

[tech list]

Thanks Bharat,
Seems like this GOP storing would be the only option. I'm based on ARM9 with 
no DSP, so processing power is precious!
On 7/27/05, Bharat Soni <bharatsoni gmail.com> wrote:
> 
> Hi Dipankar,
> 
> It is possible to display even P and B frames in reverse (backward)
> direction. The only constraints is the processing power and the
> memory. For example in case of DVD, GOP size is limited to about 18
> frames. So if you can decode and store all the 18 frames, you can
> display all the frames of a GOP in reverse direction. If you do not
> have enough memory but if you have good processing power, you may have
> to re-decode few (reference) frames to achieve same performance.
> 
> I hope this helps.
> 
> Regards,
> Bharat
> 
> On 7/25/05, tech list <mp3.aac.mp4 gmail.com> wrote:
> > Hi All,
> > I have a requirement to display fast forward and rewinded video frames
> > on the display. I mean that the video should run fast on the screen like 
> it
> > is in most DVD players when you FF/RW.
> > There is no issue in implementing this for fast forward, but for rewind,
> > how would it be possible to do this, since the decoder cannot decode 
> frames
> > backwards. If anyone has any idea how this can be implemented, please 
> let me
> > know.
> >
> > Dipankar
> >
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