Re: [Mjpeg-users] Re: "ghosting" in dark scenes with mpeg2enc

2003-06-09 Thread Andrew Stevens
Dan, Do you have a short sequence that shows the ghosting effect? I'd like to trace it through to see where it is arising. However, my guess is that it is a quantisation artefact from turing -N too high. Andrew --- This SF.net emai

[Mjpeg-users] Re: "ghosting" in dark scenes with mpeg2enc

2003-06-04 Thread Daniel Pittman
On Tue, 3 Jun 2003, Steven M. Schultz wrote: >> From [EMAIL PROTECTED] Mon Jun 2 22:39:54 2003 >> > Hmmm, the common problem mentioned has been "splotches of grey" in >> > low light scenes - hadn't heard 'ghosting' mentioned before. >> >> That's the same problem, just differently described. If yo

Re: [Mjpeg-users] Re: "ghosting" in dark scenes with mpeg2enc

2003-06-04 Thread scholnik
> *nod* This does not seem to be the same problem as you experienced with > your camera, although some of the effect is similar. There are evidently several problems that have similar looking visual effects.I think Dan Scholnik's camcorder Y/C

Re: [Mjpeg-users] Re: "ghosting" in dark scenes with mpeg2enc

2003-06-04 Thread Andrew Stevens
Hi Dan, > I will keep an eye on my videos and see if I can catch it in the act > again, and post here if I work out the cause or fix. Yes please do... it would be really useful to have a sequence that shows the effect. It sounds like it could be a Bug in the internal inverse Quantisation routi

[Mjpeg-users] Re: "ghosting" in dark scenes with mpeg2enc

2003-06-04 Thread Steven M. Schultz
Hi - > From [EMAIL PROTECTED] Mon Jun 2 22:39:54 2003 > > Hmmm, the common problem mentioned has been "splotches of grey" in low > > light scenes - hadn't heard 'ghosting' mentioned before. > > That's the same problem, just differently described. If you look at each > individual P or B frame, th

[Mjpeg-users] Re: "ghosting" in dark scenes with mpeg2enc

2003-06-03 Thread Daniel Pittman
On Tue, 03 Jun 2003, Daniel Pittman wrote: > On Mon, 2 Jun 2003, Steven M. Schultz wrote: >>> From: Daniel Pittman <[EMAIL PROTECTED]> >>> >>> I have been using mpeg2enc from the current CVS tree together with >>> transcode to encode DVD compliant MPEG-2 data from PAL DV input. > > [...] > >>> T

[Mjpeg-users] Re: "ghosting" in dark scenes with mpeg2enc

2003-06-03 Thread Daniel Pittman
On Tue, 3 Jun 2003, [EMAIL PROTECTED] wrote: [argh! "quoting" with whitespace! ahem.] > The one big problem that I do have with the toolset is that I > get ghosting in very dark scenes, to the point of making some > stuff *very* uncomfortable to watch -- like seeing it through >

[Mjpeg-users] Re: "ghosting" in dark scenes with mpeg2enc

2003-06-03 Thread Daniel Pittman
On Mon, 2 Jun 2003, Steven M. Schultz wrote: >> From: Daniel Pittman <[EMAIL PROTECTED]> >> >> I have been using mpeg2enc from the current CVS tree together with >> transcode to encode DVD compliant MPEG-2 data from PAL DV input. [...] >> The one big problem that I do have with the toolset is th