| transcode(filter) | 3th February 2008 | transcode(filter) |
NAME
transcode - filter modules collection
SYNOPSIS
transcode -J filters [other options]
COPYRIGHT
transcode is Copyright (C) 2001-2003 by Thomas Oestreich, 2003-2004 Tilmann Bitterberg, 2004-2008 Transcode Team
MODULE OPTIONS
The syntax for filter options is simple. A filter is specified with
-J filter=optionstring
The optionstring can contain multiple options which are separated by colons `:´
-J filter=option1:option2:option3
An option can have an argument or non (bool). For options with an argument, the format in which the argument has to be given to the option is specified in a printf(1) like string. The most common case is `%d' which simply means a number. The argument has to be seperated from the option by a `=´.
-J filter=bool1:option1=15:option2=20x30
Most filters try to do the right thing with the default options. You should play with various parameters if you are not satisfied with the default behaviour. If you have no idea what a filter does, its very likely that you don't need it.
If a filter takes (for eg.) a filename as an argument, make sure that the filename does not contain a `:' or a `='. Its a limitation of the parser. A comma `,' is possible but must be extra quoted. For the text filter that is
-J text=string="Hello\, World"
FILTER MODULES
To see what filter modules are avalaible for your transcode installation, do a
A complete transcode installation has the following filter modules:
- 29to23 - frame rate conversion filter (interpolating 29 to 23)
- 29to23 was written by Max Alekseyev, Tilmann Bitterberg. The version documented here is v0.3 (2003-07-18). This is a video filter. It can handle RGB and YUV mode. It is a pre-processing only filter.
- 32detect - 3:2 pulldown / interlace detection plugin
- 32detect was written by Thomas. The version documented here is v0.2.4 (2003-07-22). This is a video filter. It can handle RGB and YUV mode. It supports multiple instances and can run as a pre-processing and/or as a post-processing filter.
- This filter checks for interlaced video frames. Subsequent de-interlacing with transcode can be enforced with 'force_mode' option
- 32drop - 3:2 inverse telecine removal plugin
- 32drop was written by Thomas Oestreich. The version documented here is v0.4 (2003-02-01). This is a video filter. It can handle RGB and YUV mode. It is a pre-processing only filter.
- aclip - generate audio clips from source
- aclip was written by Thomas Oestreich. The version documented here is v0.1.1 (2003-09-04). This is a audio filter. It is a pre-processing only filter.
- astat - audio statistics filter plugin
- astat was written by Thomas Oestreich. The version documented here is v0.1.3 (2003-09-04). This is a audio filter. It is a pre-processing only filter.
- compare - compare with other image to find a pattern
- compare was written by Antonio Beamud. The version documented here is v0.1.2 (2003-08-29). This is a video filter. It can handle RGB and YUV mode. It supports multiple instances. It is a post-processing only filter.
- Generate a file in with information about the times, frame, etc the pattern defined in the image parameter is observed.
- The format of the command file is framenumber followed by at least one
whitespace followed by the command followed by at least one whitespace
followed by arguments for the command. Empty lines and lines starting with
a `#' are ignored. The frame numbers must be sorted ascending.
# Example file
# At frame 10 load the smooth filter
10 load smooth
# reconfigure at 20
20 configure smooth=strength=0.9
99 disable smooth
- cpaudio - copy one audio channel to the other channel filter plugin
- cpaudio was written by William H Wittig. The version documented here is v0.1 (2003-04-30). This is a audio filter. It is a post-processing only filter.
- Copies audio from one channel to another
- decimate - NTSC decimation plugin
- decimate was written by Thanassis Tsiodras. The version documented here is v0.4 (2003-04-22). This is a video filter. It can handle YUV mode only. It is a post-processing only filter.
- see /docs/README.Inverse.Telecine.txt
- denoise3d - High speed 3D Denoiser
- denoise3d was written by Daniel Moreno & A'rpi. The version documented here is v1.0.6 (2003-12-20). This is a video filter. It can handle YUV mode only. It supports multiple instances. It can be used as a pre-processing or as a post-processing filter.
- What: The denoise3d filter from mplayer (sibling of hqdn3d). Works very
crude and simple but also very fast. In fact it is even faster than the
original from mplayer as I managed to tweak some things (a.o. zero frame
copying).
Who: Everyone who wants to have their captured frames thoroughly denoised (i.e. who want to encode to mpeg or mjpeg) but do not have enough processing power to real-time encode AND use hqdn3d (better quality but a lot slower) or dnr (yet slower), not to mention the other denoisers that are even slower. Quality is really good for static scenes (if fed with the right parameters), moving objects may show a little ghost-image (also depends on parameters) though. Your milage may vary.
How: Parameters are the same as the hqdn3d module, although in practice you'll not end up with exactly the same values. Just experiment. Particular for this version of the filter is that if you supply -1 to either component's parameters (luma/chroma), that component will not have the filter applied to. If you're still short on CPU cycles, try disabling the luma filter, this will not make much difference in the effectiveness of the filter!
- detectclipping - detect clipping parameters (-j or -Y)
- detectclipping was written by Tilmann Bitterberg, A'rpi. The version documented here is v0.1.0 (2003-11-01). This is a video filter. It can handle RGB and YUV mode. It supports multiple instances and can run as a pre-processing and/or as a post-processing filter.
- Detect black regions on top, bottom, left and right of an image. It is suggested that the filter is run for around 100 frames. It will print its detected parameters every frame. If you don't notice any change in the printout for a while, the filter probably won't find any other values. The filter converges, meaning it will learn.
- detectsilence - audio silence detection with tcmp3cut commandline generation
- detectsilence was written by Tilmann Bitterberg. The version documented here is v0.0.1 (2003-07-26). This is a audio filter. It is a pre-processing only filter.
- divxkey - check for DivX 4.xx / OpenDivX / DivX;-) keyframe
- divxkey was written by Thomas Oestreich. The version documented here is v0.1 (2002-01-15). This is a video filter. It is a pre-processing only filter.
- dnr - dynamic noise reduction
- dnr was written by Gerhard Monzel. The version documented here is v0.2 (2003-01-21). This is a video filter. It can handle RGB and YUV mode. It is a post-processing only filter.
- see /docs/filter_dnr.txt (german only)
- doublefps - double frame rate by deinterlacing fields into frames
- doublefps was written by Andrew Church. The version documented here is v1.1 (2006-05-14). This is a video and audio filter. It can handle YUV and YUV422 modes. It is a pre-processing only filter.
Doubles the frame rate of interlaced video by separating each field into a separate frame. The fields can either be left as is (giving a progessive video with half the height of the original) or re-interlaced into their original height (at the doubled frame rate) for the application of a separate deinterlacing filter.
Note that due to transcode limitations, it is currently necessary to use the -Z option to specify the output frame size when using half-height mode (this does not slow the program down if no actual zooming is done).
- extsub - DVD subtitle overlay plugin
- extsub was written by Thomas Oestreich. The version documented here is 0.3.5 (2003-10-15). This is a video filter. It can handle RGB and YUV mode. It can be used as a pre-processing or as a post-processing filter.
- fieldanalysis - Field analysis for detecting interlace and telecine
- fieldanalysis was written by Matthias Hopf. The version documented here is v1.0 pl1 (2004-08-13). This is a video filter. It can handle RGB,YUV and YUV422 mode. It is a pre-processing only filter.
- fields - Field adjustment plugin
- fields was written by Alex Stewart. The version documented here is v0.1.1 (2003-01-21). This is a video filter. It can handle RGB and YUV mode. It is a pre-processing only filter.
- The 'fields' filter is designed to shift, reorder, and generally rearrange
independent fields of an interlaced video input. Input retrieved from
broadcast (PAL, NTSC, etc) video sources generally comes in an interlaced
form where each pass from top to bottom of the screen displays every other
scanline, and then the next pass displays the lines between the lines from
the first pass. Each pass is known as a "field" (there are
generally two fields per frame). When this form of video is captured and
manipulated digitally, the two fields of each frame are usually merged
together into one flat (planar) image per frame. This usually produces
reasonable results, however there are conditions which can cause this
merging to be performed incorrectly or less-than-optimally, which is where
this filter can help.
The following options are supported for this filter (they can be separated by colons):
shift - Shift the video by one field (half a frame),
changing frame boundaries appropriately. This is
useful if a video capture started grabbing video
half a frame (one field) off from where frame
boundaries were actually intended to be.
flip - Exchange the top field and bottom field of each
frame. This can be useful if the video signal was
sent "bottom field first" (which can happen
sometimes with PAL video sources) or other
oddities occurred which caused the frame
boundaries to be at the right place, but the
scanlines to be swapped.
flip_first
- Normally shifting is performed before flipping if
both are specified. This option reverses that
behavior. You should not normally need to use
this unless you have some extremely odd input
material, it is here mainly for completeness.
help - Print this text.Note: the 'shift' function may produce slight color discrepancies if YV12 is used as the internal transcode video format (default). This is because YV12 does not contain enough information to do field shifting cleanly. For best (but slower) results, use RGB mode for field shifting.
- fps - convert video frame rate, gets defaults from -f and --export_fps
- fps was written by Christopher Cramer. The version documented here is v1.1 (2004-05-01). This is a video filter. It can handle RGB and YUV mode. It can be used as a pre-processing or as a post-processing filter.
- options: <input fps>:<output fps> example: -J fps=25:29.97
will convert from PAL to NTSC If no options are given, defaults or
-f/--export_fps/--export_frc will be used. Some examples:
-J fps=10:5:pre convert from 10 fps to 5 fps, preprocess -J fps=10:post:12 convert from 10 to 12, postprocess -J fps=pre=1:7:5 convert from 7 to 5, postprocess -J fps=9:3.1:post=-0x7 convert from 9 to 3.1, postprocess
If that last one is confusing you, remember that 0 is false and everything else is true. Of course, octal and hexadecimal numbers are supported too. This is intended to be backward compatible with the old format.
- hqdn3d - High Quality 3D Denoiser
- hqdn3d was written by Daniel Moreno & A'rpi. The version documented here is v1.0.2 (2003-08-15). This is a video filter. It can handle YUV mode only. It supports multiple instances. It can be used as a pre-processing or as a post-processing filter.
- This filter aims to reduce image noise producing smooth images and making still images really still (This should enhance compressibility).
- invert - invert the image
- invert was written by Tilmann Bitterberg. The version documented here is v0.1.4 (2003-10-12). This is a video filter. It can handle RGB,YUV and YUV422 mode. It is a post-processing only filter.
- ivtc - NTSC inverse telecine plugin
- ivtc was written by Thanassis Tsiodras. The version documented here is v0.4.1 (2004-06-01). This is a video filter. It can handle YUV mode only. It is a pre-processing only filter.
- see /docs/README.Inverse.Telecine.txt
- levels - Luminosity level scaler
- levels was written by Bryan Mayland. The version documented here is v1.0.0 (2004-06-09). This is a video filter. It can handle YUV mode only. It supports multiple instances. It is a post-processing only filter.
- logo - render image in videostream
- logo was written by Tilmann Bitterberg. The version documented here is v0.10 (2003-10-16). This is a video filter. It can handle RGB and YUV mode. It is a post-processing only filter.
- This filter renders an user specified image into the video. Any image
format ImageMagick can read is accepted. Transparent images are also
supported. Image origin is at the very top left.
see /docs/filter_logo.txt
- logoaway - remove an image from the video
- logoaway was written by Thomas Wehrspann <thomas@wehrspann.de>. The version documented here is v0.5 (2004-03-07). This is a video filter. It can handle RGB and YUV mode. It is a post-processing only filter. It supports multiple instances.
- This filter removes an image in a user specified area from the video. You
can choose from different methods.
see /docs/filter_logoaway.txt
- lowpass - High and low pass filter
- lowpass was written by Tilmann Bitterberg. The version documented here is v0.1.0 (2002-02-26). This is a audio filter. It is a pre-processing only filter.
- mask - Filter through a rectangular Mask
- mask was written by Thomas Oestreich, Chad Page. The version documented here is v0.2.3 (2003-10-12). This is a video filter. It can handle RGB,YUV and YUV422 mode. It is a pre-processing only filter.
- This filter applies an rectangular mask to the video. Everything outside the mask is set to black.
- modfps - plugin to modify framerate
- modfps was written by Marrq. The version documented here is v0.10 (2003-08-18). This is a video filter. It can handle RGB and YUV mode. It is a pre-processing only filter.
- This filter aims to allow transcode to alter the fps of video. While one
can reduce the fps to any amount, one can only increase the fps to at most
twice the original fps.
There are two modes of operation, buffered and unbuffered, unbuffered is quick, but buffered, especially when dropping frames should look better.
For most users, modfps will need either no options, or just mode=1
see /docs/README.filter.modfps
- msharpen - VirtualDub's MSharpen Filter
- msharpen was written by Donald Graft, William Hawkins. The version documented here is (1.0) (2003-07-17). This is a video filter. It can handle RGB and YUV mode. It is a post-processing only filter.
- This plugin implements an unusual concept in spatial sharpening. Although
designed specifically for anime, it also works well with normal video. The
filter is very effective at sharpening important edges without amplifying
noise.
* Strength 'strength' (0-255) [100]
This is the strength of the sharpening to be applied to the edge detail areas. It is applied only to the edge detail areas as determined by the 'threshold' parameter. Strength 255 is the strongest sharpening.
* Threshold 'threshold' (0-255) [10]
This parameter determines what is detected as edge detail and thus sharpened. To see what edge detail areas will be sharpened, use the 'mask' parameter.
* Mask 'mask' (0-1) [0]
When set to true, the areas to be sharpened are shown in white against a black background. Use this to set the level of detail to be sharpened. This function also makes a basic edge detection filter.
* HighQ 'highq' (0-1) [1]
This parameter lets you tradeoff speed for quality of detail detection. Set it to true for the best detail detection. Set it to false for maximum speed.
- normalize - Volume normalizer
- normalize was written by pl, Tilmann Bitterberg. The version documented here is v0.1.1 (2002-06-18). This is a audio filter. It is a pre-processing only filter.
- null - demo filter plugin; does nothing
- null was written by Thomas Oestreich. The version documented here is v0.2 (2003-09-04). This is a video and audio filter. It can be used as a pre-processing or as a post-processing filter.
- pp - Mplayers postprocess filters
- pp was written by Michael Niedermayer et al, Gerhard Monzel. The version documented here is v1.2.4 (2003-01-24). This is a video filter. It can handle YUV mode only. It supports multiple instances. It can be used as a pre-processing or as a post-processing filter.
- preview - xv/sdl/gtk preview plugin
- preview was written by Thomas Oestreich. The version documented here is v0.1.4 (2002-10-08). This is a video filter. It can handle RGB and YUV mode. It is a post-processing only filter.
- XXX: Write me
- pv - xv only preview plugin
- pv was written by Thomas Oestreich, Tilmann Bitterberg. The version documented here is v0.2.3 (2004-06-01). This is a video filter. It can handle YUV and YUV422 mode. It is a post-processing only filter.
- The filter listens to mouse and key strokes. If you click into the preview
window, the first time say near the upper left corner and the second time
near the lower right corner, transcode will draw a rectangle and will
print out the coordinates of this rectangle on stdout and the socket. See
the table below for available keys.
When you start transcode with the --socket option and the pv filter with (for example) cache=20 you can talk to transcode and the pv filter at runtime using the socket.
transcode -i file.avi -J pv=cache=30 --socket /tmp/sock
- Available Commands
- Key Socket* Effect
- RET
- draw redraws the image, applying filters.
- u
- undo goes to image before draw
- SPACE
- pause pause the preview (and transcode)
- UP
- fastfw in pause mode, step forward 5 frames
- RIGHT
- slowfw in pause mode, step forward 1 frame
- DOWN
- fastbw in pause mode, step back 5 frames
- LEFT
- slowbw in pause mode, step back 1 frame
- q
- display toggle display of frames
- s
- slower slow down
- f
- faster speed up
- y
- toggle toggle displaying only every 5 frames
- j
- grab save a JPEG
- r
- rotate rotate AVI file after next keyframe
- resample - audio resampling filter plugin
- resample was written by Thomas Oestreich. The version documented here is v0.1.4 (2003-08-22). This is a audio filter. It is a pre-processing only filter.
- skip - skip all listed frames
- skip was written by Thomas Oestreich. The version documented here is v0.0.1 (2001-11-27). This is a video and audio filter. It is a pre-processing only filter.
- slowmo - very cheap slow-motion effect
- slowmo was written by Tilmann Bitterberg. The version documented here is v0.3 (2003-29-11). This is a video filter. It can handle RGB and YUV mode. It is a pre-processing only filter.
- This filter produces a simple slow-motion effect by duplicating certain frames. I have seen this effect on TV and despite its the simple algorithm it works quite well. The filter has no options.
- smartbob - Motion-adaptive deinterlacing for double-frame-rate output.
- smartbob was written by Donald Graft, Tilmann Bitterberg. The version documented here is v1.1beta2 (2003-06-23). This is a video filter. It can handle RGB and YUV mode. It is a post-processing only filter.
- This filter only makes sense when fed by -J doublefps. It will take the field-frames which filter_doublefps produces and generates full-sized motion adaptive deinterlaced output at the double import framerate.
- smartdeinter - VirtualDub's smart deinterlacer
- smartdeinter was written by Donald Graft. The version documented here is v2.7b (2003-02-01). This is a video filter. It can handle RGB and YUV mode. It is a pre-processing only filter.
- This filter provides a smart, motion-based deinterlacing capability. In static picture areas, interlacing artifacts do not appear, so data from both fields is used to provide full detail. In moving areas, deinterlacing is performed
- smartyuv - Motion-adaptive deinterlacing
- smartyuv was written by Tilmann Bitterberg. The version documented here is 0.1.4 (2003-10-13). This is a video filter. It can handle YUV mode only. It is a pre-processing only filter.
- This filter is basically a rewrite of the smartdeinter filter by Donald
Graft (without advanced processing options) for YUV mode only. Its faster
than using the smartdeinter in YUV mode and is also tuned with its
threshold settings for YUV mode. The filter detects motion and static
areas in an image and only deinterlaces (either by blending or by cubic
interpolation) the moving areas. The result is an image with high detail
in static areas, no information is lost there.
The threshold settings should be sufficent for most users. As a rule of thumb, I recommend setting the chroma threshold to about the half of the luma threshold. If you want more deinterlacing, lower the thresholds. The scene threshold can be easily found by turning on verbose mode and the preview filter. In verbose mode, the filter will print out, when it detects a scene change. If scenechanges go by unnoticed, lower the scene threshold. You can completly disable chroma processing with the doChroma=0 option. Here is a sample commandline
-J smartyuv=highq=1:diffmode=2:cubic=1:Blend=1:chromathres=4:threshold=8:doChroma=1
- smooth - (single-frame) smoothing plugin
- smooth was written by Chad Page. The version documented here is v0.2.3 (2003-03-27). This is a video filter. It can handle YUV mode only. It is a pre-processing only filter. It supports multiple instances.
- "single-frame" means it only works with the current frame, it does not need the next or the previous frame for operation. Usually smoothing is done by talking the data of previous frames into account to see which parts of the picture can be "safely" smoothed, this filter only needs one frame.
- Usage -J subtitler="[no_objects] [subtitle_file=s] [color_depth=n]
[font_dir=s] [font=n] [font_factor=f [frame_offset=n] [debug] [help]"
f is float, h is hex, n is integer, s is string.
no_objects disables subtitles and other objects (off).
color_depth= 32 or 24 (overrides X auto) (32).
font= 0 or 1, 1 gives strange symbols... (0).
font_dir= place where font.desc is (~/.subtitles/font).
font_factor= .1 to 100 outline characters (10.75).
frame_offset= positive (text later) or negative (earlier) integer (0).
subtitle_file= pathfilename.ppml location of ppml file (~/.subtitles/demo.ppml).
debug prints debug messages (off).
help prints this list and exit.
- testframe - generate stream of testframes
- testframe was written by Thomas Oestreich. The version documented here is v0.1.3 (2003-09-04). This is a video filter. It can handle RGB and YUV mode. It is a pre-processing only filter.
- text - write text in the image
- text was written by Tilmann Bitterberg. The version documented here is v0.1.4 (2004-02-14). This is a video filter. It can handle RGB and YUV mode. It is a post-processing only filter.
- see /docs/filter_text.txt
- tomsmocomp - Tom's MoComp deinterlacing filter
- tomsmocomp was written by Tom Barry et al.. The version documented here is v0.1 (2004-07-31). This is a video filter. It can handle YUV and YUV422 mode. It is a pre-processing only filter.
- unsharp - unsharp mask & gaussian blur
- unsharp was written by Remi Guyomarch. The version documented here is v1.0.1 (2003-10-27). This is a video filter. It can handle YUV mode only. It is a post-processing only filter.
- This filter blurs or sharpens an image depending on the sign of
"amount". You can either set amount for both luma and chroma or
you can set it individually (recommended). A positive value for amount
will sharpen the image, a negative value will blur it. A sane range for
amount is -1.5 to 1.5.
The matrix sizes must be odd and define the range/strength of the effect. Sensible ranges are 3x3 to 7x7.
It sometimes makes sense to sharpen the sharpen the luma and to blur the chroma. Sample string is:
luma=0.8:luma_matrix=7x5:chroma=-0.2:chroma_matrix=3x3
- whitebalance - White Balance Filter - correct images with a broken white balance
- whitebalance was written by Guillaume Cottenceau. The version documented here is v0.1 (2003-10-01). This is a video filter. It can handle RGB and YUV mode. It is a pre-processing only filter.
- This filter allows correcting movies with a broken white balance, e.g. bluish movies.
- xharpen - VirtualDub's XSharpen Filter
- xharpen was written by Donald Graft, Tilmann Bitterberg. The version documented here is (1.0b2) (2003-02-12). This is a video filter. It can handle RGB and YUV mode. It is a post-processing only filter.
- This filter performs a subtle but useful sharpening effect. The result is
a sharpening effect that not only avoids amplifying noise, but also tends
to reduce it. A welcome side effect is that files processed with this
filter tend to compress to smaller files.
Strength 'strength' (0-255) [200]
When this value is 255, mapped pixels are not blended with the original pixel values, so a full-strength effect is obtained. As the value is reduced, each mapped pixel is blended with more of the original pixel. At a value of 0, the original pixels are passed through and there is no sharpening effect.
Threshold 'threshold' (0-255) [255]
This value determines how close a pixel must be to the brightest or dimmest pixel to be mapped. If a pixel is more than threshold away from the brightest or dimmest pixel, it is not mapped. Thus, as the threshold is reduced, pixels in the mid range start to be spared.
- yuvdenoise - mjpegs YUV denoiser
- yuvdenoise was written by Stefan Fendt, Tilmann Bitterberg. The version documented here is v0.2.1 (2003-11-26). This is a video filter. It can handle YUV mode only. It can be used as a pre-processing or as a post-processing filter.
- see /docs/filter_yuvdenoise.txt
- yuvmedian - mjpegs YUV median filter
- yuvmedian was written by Mike Bernson, Tilmann Bitterberg. The version documented here is v0.1.0 (2003-01-24). This is a video filter. It can handle YUV mode only. It can be used as a pre-processing or as a post-processing filter.
AUTHORS
transcode was written by Thomas Oestreich
<ostreich@theorie.physik.uni-goettingen.de> with contributions from many
others. See AUTHORS for details.
SEE ALSO
transcode(1), transcode_import(1), transcode_export(1), tcmodinfo(1),
| modules | 1 |