[MPlayer-dev-eng] An Idea - I cannot develop it. Scrap it if it is not any good.

[Oded Shimon]

On Sat, Aug 06, 2005 at 03:21:36AM +0200, Dominik 'Rathann' Mierzejewski wrote:
> On Friday, 05 August 2005 at 04:13, Oded Shimon wrote:
> > On Mon, Jul 25, 2005 at 09:37:59AM -0400, Jason Tackaberry wrote:
> > > On Mon, 2005-07-25 at 14:26 +0100, VJ wrote:
> > > >   I was just thinking if somebody adds this feature to mencoder
> > > > someday - a filter which shows the frames on the screen as they are at
> > > > the stage where the filter is added in the chain. It could be used to
> > > > show the encoding as it proceeds. It could show all frames or every
> > > > nth frame
> > > 
> > > I have developed something like this called vf_outbuf, which writes the
> > > contents of the video to a shared memory buffer.  An external
> > > application can handle the display portion of it, which is how it should
> > > be in mencoder's case anyway.  Although I didn't build it for the type
> > > of thing you're describing, it would be possible to use it that way.
> > 
> > That sounds like it would work pretty well... I do wish it would be 
> > possible to actually preview the ENCODED video while encoding, if it did 
> > MEncoder would be the first program on earth to support it. :)
> 
> I believe VirtualDub and clones have supported this for years.

No, the only show you the FILTERED video, not the encoded one... i.e., 
before the lossy compression. According to Loren, with some hacking in the 
mpeg4 encoder, it is possible to do it without a speed loss. Maybe such a 
thing should be added to lavc... It's beyond my knowledge though.

- ods15