[FFmpeg-devel] [PATCH 1/2] add support for generic seeking by?reading timestamps in nuv
michaelni at gmx.at
Mon Sep 12 18:16:34 CEST 2011
On Mon, Sep 12, 2011 at 05:56:51PM +0200, Reimar Döffinger wrote:
> On Mon, Sep 12, 2011 at 02:12:48PM +0000, Joakim Plate wrote:
> > Reimar Döffinger <Reimar.Doeffinger <at> gmx.de> writes:
> > >
> > > Not a proper review yet, but your approach is inefficient.
> > > You should not scan bytewise, but instead always read a 32 bit block and look
> > for jjjj - once you have a match,
> > > check for a full RTjjjjjjjj...
> > > I thought I had seen this implemented somewhere (in MPlayer? Or maybe just one
> > of the things I never finished.
> > This patch has done several round already. Seems the last version in that thread
> > is not what we still had applied locally. You intended to look at it seems:
> > http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/68778/focus=68794
> Sorry for it going under.
> But I think the idea I had back then was to do this:
> Scan for jjjj using avio_rn32() or such.
> If found:
> - store current position
> - seek back 5
keep last variable, as that seekback can fail on non seekable input
depending on buffer state
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
There seems to be only one solution to NIH syndrom, ... a shooting squad
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