y4mshift (use -h for documentation). You don't need to upsample to 444,
but it will give you finer control over the chroma shifts. Since the
luma alone can be moved by individual pixels (using -y and -Y) you still
have fine control over the differential shift with subsampled formats.
Dan
On
On Thu, 2009-06-04 at 16:04 +1000, Richard Archer wrote:
At 3:41 PM +0200 3/6/09, Hervé wrote:
hello, I'm not developper but it could not be a buffer concern? (it's
just an idea)
Following this hint, I doubled the buffer sizes allocated
by y4mstabilizer and it now works! I have no idea
I recently took some really unsteady video (walking on sand, partially
zoomed in; we're talking the bridge of the Enterprise after a direct
hit shaky) and decided to test the limits of y4mstabilizer. It seems
to be up to the task in theory (if one doesn't mind much of a given
frame being
On Tue, 2006-04-11 at 01:26 +0200, Nicolas wrote:
Do you know of any tool I could use in an mjpeg pipe to correct
horizontal (color Bleed) and/or vertical (color Droop) chromashifts?
Use y4mshift with the -y/-Y options to shift luma and chroma
independently.
Dan
On Wed, 2005-03-09 at 09:35 +1300, E.Chalaron wrote:
Now another thing, at the risk of appearing completely dumb, what is the
purpose of y4mspatialfilter ? is it a convolution filter ? if so is there a
way I can cut off frequencies to avoid the Nyquist effect ?
y4mspatialfilter performs a
On Sun, 2005-02-20 at 08:41 -0800, Steven Boswell II wrote:
Some time ago, there was a discussion on 4:1:1 chroma
subsampling in DV files of 3-2-pulldown sources, and
how the color needed a special line-switch in order to
be completely accurate. (Lines 2 and 3 of every group
of 4 lines have
out the mean if
black has a constant bias. Besides, since dark noise doesn't change
quickly over time it wouldn't lead to noisy backgrounds, just
nonuniformly black backgrounds.
Dan Scholnik
---
This SF.Net email is sponsored by: Oracle 10g
On Wed, 2004-05-26 at 12:18, Steven M. Schultz wrote:
On Wed, 26 May 2004, Dan Scholnik wrote:
Doesn't the ' in Y' indicate that the digital data has been
gamma-corrected to compensate for the nonlinear CRT response? In that
I'd guess so - what does one get (Y or Y') when running
On Sat, 2004-05-22 at 01:56, Steven M. Schultz wrote:
On Sat, 22 May 2004, Dan Scholnik wrote:
You might even try running y4mspatialfilter before and after y4mdenoise
in case the latter introduces any high-frequency artifacts.
You probably would get the same 3% by running
On Sat, 2004-05-22 at 00:50, Steven M. Schultz wrote:
On Mon, 10 May 2004, Dan Scholnik wrote:
You might even try running y4mspatialfilter before and after y4mdenoise
in case the latter introduces any high-frequency artifacts.
Ok - this I have done. On the particular video being
, medium, and heavy filtering.
Dan Scholnik
---
This SF.Net email is sponsored by Sleepycat Software
Learn developer strategies Cisco, Motorola, Ericsson Lucent use to
deliver higher performing products faster, at low TCO.
http://www.sleepycat.com
by 16 luminance values.
Dan Scholnik
---
This SF.net email is sponsored by: The Robotic Monkeys at ThinkGeek
For a limited time only, get FREE Ground shipping on all orders of $35
or more. Hurry up and shop folks, this offer expires April 30th
On Sat, 2004-04-24 at 22:38, Steven Boswell wrote:
Andras Kadinger, fellow mjpeg-developer subscriber, was nice enough to
agree to host this. The web page contains 2 movie clips that pretty
dramatically show the results of using the denoiser vs. not using it.
I can see the difference when I
13 matches
Mail list logo
