Spellchecked, slightly reworded, parts corrected.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9680 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 40 insertions, 40 deletions

diff --git a/DOCS/tech/vop.txt b/DOCS/tech/vop.txt
index 24ec06e707..b8a4894dcb 100644
--- a/DOCS/tech/vop.txt
+++ b/DOCS/tech/vop.txt
@@ -1,26 +1,26 @@
 Video Filters
 =============
 
-video filters are plugin-like code modules implementing the interface
-defined in vf.h
+Video filters are plugin-like code modules implementing the interface
+defined in vf.h.
 
-basically it means video output manipulation, ie. these plugins can
+Basically it means video output manipulation, i.e. these plugins can
 modify the image and the image properties (size, colorspace etc) between
-the video decoders (vd.h) and output layer (libvo or video encoders)
+the video decoders (vd.h) and the output layer (libvo or video encoders).
 
-the actual API is a mixture of the video decoder (vd.h) and libvo
+The actual API is a mixture of the video decoder (vd.h) and libvo
 (video_out.h) APIs.
 
-the main differences:
+main differences:
 - vf plugins may be "loaded" multiple times, with different parameters
-  and context - it's new in mplayer, old APIs weren't reentrant
-- vf plugins don't have to implement all functions - all funcs has
-  'fallback' version, so the plugins only override these if want
-- each vf plugin has its own get_image context, and they can interchange
+  and context - it's new in MPlayer, old APIs weren't reentrant.
+- vf plugins don't have to implement all functions - all functions have a
+  'fallback' version, so the plugins only override these if wanted.
+- Each vf plugin has its own get_image context, and they can interchange
   images/buffers using these get_image/put_image calls.
 
 API details:
--- TO DO --  (see vf.h fpr API and vf_*.c for examples)
+-- TO DO --  (see vf.h for API and vf_*.c for examples)
 
 Current plugins:
 ================
@@ -38,7 +38,7 @@ Current plugins:
     o   (0=disable/1=enable SUB/OSD rendering) defaults (0) to disabled
     MPI: DR (if possible) or copy
     Special: mpcodecs core uses it to solve stride restrictions between filters
-	     mencoder uses (autoload) it to render SUB/OSD
+	     MEncoder uses (autoload) it to render SUB/OSD
 
 -vf flip
     Flips image upside-down (vertical mirroring)
@@ -55,9 +55,9 @@ Current plugins:
     Draw a rectangle.  Useful for testing crop plugin parameters.
     w,h (rectangle's width and height) defaults (-1) to maximum
         possible width while keeping the boundaries visible.
-    x,y (rectangle's top left corner position) defauts (-1) to upper
+    x,y (rectangle's top left corner position) defaults (-1) to upper
         left most position.
-    The plugin responds to the input.conf directive "change_control"
+    The plugin responds to the input.conf directive "change_rectangle"
     that takes two parameters.  The first parameter can be 0 for w, 1
     for h, 2 for x or 3 for y.  The second parameter is the amount to
     change the designated rectangle boundary.
@@ -71,8 +71,8 @@ Current plugins:
 -vf scale[=w:h[:c[:p]]]
     Software scaling (zoom) _and_ yuv<->rgb colorspace conversion
     w,h (new width/height after scaling) defaults to original width,height
-	note: if -zoom is used, and underlaying filters (including libvo)
-	uncapable of scaling, then it defaults to d_width/d_height !
+	Note: If -zoom is used, and underlying filters (including libvo) are
+	incapable of scaling, then it defaults to d_width/d_height!
 	note 2: w/h values -1 means original width/height, 0 means scaled
 	d_width/d_height. -2/-3 means calculating w or h using the other
 	dimension and the original (-3) or prescaled (-2) aspect ratio.
@@ -81,16 +81,16 @@ Current plugins:
 	1 -> use only every 2. input line for chroma
 	2 -> use only every 4. input line for chroma
 	3 -> use only every 8. input line for chroma
-    p	scaling parameter (depends upon the used scaling method)
-	for -sws 2 (bicubic)  its sharpness (0 (soft) - 100 (sharp))
-	for -sws 7 (gaussian) its sharpness (0 (soft) - 100 (sharp))
-	for -sws 9 (lanczos)  its filter length (1  - 10)
+    p	scaling parameter (depends upon the scaling method used)
+	for -sws 2 (bicubic)  it is sharpness (0 (soft) - 100 (sharp))
+	for -sws 7 (gaussian) it is sharpness (0 (soft) - 100 (sharp))
+	for -sws 9 (lanczos)  it is filter length (1 - 10)
     MPI: TEMP, accepts stride
     Special: dec_video and mpcodecs core autoloads it for colorspace conv.
 
 -vf yuy2
     Forced software YV12/I420 -> YUY2 conversion
-    (usefull for video cards/drivers with slow YV12 but fast YUY2 support)
+    (useful for video cards/drivers with slow YV12 but fast YUY2 support)
     MPI: TEMP, accepts stride
 
 -vf rgb2bgr[=swap]
@@ -106,19 +106,19 @@ Current plugins:
     _restrict_ the list of supported colorspaces (query-format()) to a single,
     given fourcc. The 'fourcc' option defaults to 'yuy2', but may be any
     format name, like rgb15, bgr24, yv12 etc...
-    note again, it does NOT do any conversion, it just limits the _next_
-    plugins format list.
+    Note again that it does NOT do any conversion, it just limits the format
+    list for the _next_ plugin.
     MPI: passthru
 
 -vf pp=[<filterName>[:<option>[:<option>...]][/[-]<filterName>[:<option>...]]...]
-    Postprocessing filter.  (usefull for codecs without built-in
+    postprocessing filter.  (useful for codecs without built-in
     postprocessing, like libmpeg12 or libavcodec)
     see `mplayer -vf pp=help`
     MPI: DR (if possible) or TEMP
-    Special: dec_video autoloads it if -pp option used but codec can't do pp.
+    Special: dec_video autoloads it if -pp option is used but codec can't do pp.
 
 -vf lavc[=quality:fps]
-    Fast software YV12->MPEG1 conversion, usefull for dxr3/dvb drivers
+    Fast software YV12->MPEG1 conversion, useful for DXR3/DVB drivers
     It uses libavcodec. Currently faster and better quality than -vf fame!
     Param quality: fixed qscale (1<=quality<32) or bitrate (32<=quality KBits)
     Param fps: force output fps (float value). If not give, or 0, it's
@@ -126,7 +126,7 @@ Current plugins:
     MPI: EXPORT special
 
 -vf fame
-    Fast software YV12->MPEG1 conversion, usefull for dxr3/dvb drivers
+    Fast software YV12->MPEG1 conversion, useful for DXR3/DVB drivers
     It uses libfame.
     MPI: EXPORT special
 
@@ -136,7 +136,7 @@ Current plugins:
     The 'aspect' parameter controls aspect ratio, it should be calculated
     as aspect=DVB_HEIGHT*ASPECTRATIO, default is 576*(4/3)=768
     (for 16:9 TV set it to 576*(16/9)=1024)
-    It's only usefull together with expand+scale:
+    It's only useful together with expand+scale:
 	-vf dvbscale,scale=-1:0,expand=-1:576:-1:-1:1,lavc
     MPI: passthru
 
@@ -166,7 +166,7 @@ Current plugins:
 -vf eq[=brightness:contrast]
     software equalizer, for use with cards that don't support
     brightness and contrast controls in hardware. It might also be
-    useful with mencoder, either for fixing poorly captured movies, or
+    useful with MEncoder, either for fixing poorly captured movies, or
     for slightly reducing contrast to mask artifacts and get by with
     lower bitrates. Initial values in the range -100..100 may be
     given on the command line, and the eq filter is controllable
@@ -183,11 +183,11 @@ Current plugins:
 
 -vf unsharp=l|cWxH:amount[:l|cWxH:amount]
     unsharp mask / gaussian blur.
-        l   apply effect on luma component
+        l   apply effect on luma components
         c   apply effect on chroma components
       WxH   width and height of the matrix, odd sized in both directions
             min = 3x3, max = 13x11 or 11x13
-            usually you will use somthing between 3x3 and 7x7
+            usually you will use something between 3x3 and 7x7
     amount  relative amount of sharpness / blur to add to the image
             amount < 0 = blur, amount > 0 = sharpen
             usually you will use something between -1.5 and 1.5
@@ -202,11 +202,11 @@ Current plugins:
     d deinterleave
     i interleave
     s swap fields (exchange even & odd lines)
-    The goal of this filter to add ability of processing interlaced images 
-    pre-field without deinterlacing it. You can filter your interlaced dvd
-    and playback on TV without breaking the interlacing. 
-    While deinterlacing (with the post processing filter) removes permamently
-    the interlacing (by smoothing averaging etc) deinterleaving splits the 
+    The goal of this filter is to add the ability to process interlaced images 
+    pre-field without deinterlacing them. You can filter your interlaced DVD
+    and play it on a TV without breaking the interlacing. 
+    While deinterlacing (with the postprocessing filter) removes interlacing
+    permanently (by smoothing, averaging, etc) deinterleaving splits the 
     frame into 2 fields (so called half pictures), so you can process (filter)
     them independently and then re-interleave them.
     MPI: TEMP, accepts stride
@@ -219,7 +219,7 @@ Current plugins:
 -vf sab=radius:prefilter:colorDiff[:radius:prefilter:colorDiff]
     radius	blur filter strength (~0.1-4.0) (slower if larger)
     prefilter	prefilter strength (~0.1-2.0)
-    colorDiff	how different the pixels are allowed to be to be considered (~0.1-100.0)
+    colorDiff	how different the pixels are allowed to be considered (~0.1-100.0)
 
 -vf smartblur=radius:stregth:threshold[:radius:stregth:threshold]
     radius	blur filter strength (~0.1-5.0) (slower if larger)
@@ -227,7 +227,7 @@ Current plugins:
     threshold	0 -> filter all, (0-30) -> filter flat areas, (-30-0) -> filter edges
 
 -vf perspective=x0:y0:x1:y1:x2:y2:x3:y3:t
-    x0,y0,...	coordinates of the topleft, topright, bottomleft, bottomright corners
+    x0,y0,...	coordinates of the top left, top right, bottom left, bottom right corners
     t		0-> linear, 1->cubic resampling
 
 -vf denoise3d=[luma:chroma:time]
@@ -235,7 +235,7 @@ Current plugins:
     chroma	spatial chroma strength (default = 3)
     time	temporal strength (default = 6)
     This filter aims to reduce image noise producing smooth images and
-    making stills realy still. (it should enhance compressibility)
+    making still images really still. (it should enhance compressibility)
     Can be given from 0 to 3 parameters. Parameters not given will be
-    infered from the given ones. (ie: providing only one of them acts as an
+    inferred from the given ones. (i.e. providing only one of them acts as a
     "scale factor")