Saving Audio-Visual to Bitmaps as Black and White

[nook]

Hi, i currently developing a PHP Class for my Rasbbarry PI LCD Display, and i want to Dispaly the Audio Visual from VNC on my Display. So i need to save the visual to bitmaps. I use the folloing command for this:

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cvlc --play-and-exit --audio-visual=visual --video-filter=scene --vout=dummy --scene-ratio=5 --saturation=0.000000 --scene-prefix=img --scene-path=/ramdisk/ --scene-format=png --scene-height=64 --scene-width=128 /var/My.mp3

This command saves saves the audio visual to /ramdirve/. taht works fine. The problem is, that i need black and white pictures!
So i found some parameters at the documentation (http://wiki.videolan.org/VLC_command-line_help):
Like this:

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Image properties filter --contrast=<float [0.000000 .. 2.000000]> Image contrast (0-2) Set the image contrast, between 0 and 2. Defaults to 1. --brightness=<float [0.000000 .. 2.000000]> Image brightness (0-2) Set the image brightness, between 0 and 2. Defaults to 1. --hue=<integer [0 .. 360]> Image hue (0-360) Set the image hue, between 0 and 360. Defaults to 0. --saturation=<float [0.000000 .. 3.000000]> Image saturation (0-3) Set the image saturation, between 0 and 3. Defaults to 1. --gamma=<float [0.010000 .. 10.000000]> Image gamma (0-10) Set the image gamma, between 0.01 and 10. Defaults to 1. --brightness-threshold, --no-brightness-threshold Brightness threshold (default disabled) When this mode is enabled, pixels will be shown as black or white. The threshold value will be the brightness defined below. (default disabled)

or that:

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Color threshold filter Select one color in the video --colorthres-color={16711680 (Red), 16711935 (Fuchsia), 16776960 (Yellow), 65280 (Lime), 255 (Blue), 65535 (Aqua)} Color Colors similar to this will be kept, others will be grayscaled. This must be an hexadecimal (like HTML colors). The first two chars are for red, then green, then blue. #000000 = black, #FF0000 = red, #00FF00 = green, #FFFF00 = yellow (red + green), #FFFFFF = white --colorthres-saturationthres=<integer [-2147483648 .. 2147483647]> Saturation threshold --colorthres-similaritythres=<integer [-2147483648 .. 2147483647]> Similarity threshold

But my pictures are with all this parameters colored I dont know how to say VLC that i want Black and White pictures. Can someone please help me?

If i try thes options with the VLC GUI i get Black and White audi visual, but with cvlc, no way

[Jean-Baptiste Kempf]

Adding adjust before scene does not work?

[nook]

You mean some like:

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--video-filter=adjust,scene

? No than VLC only loads adjust but not scene. So i tryed some like --vout-filter=scene --video-filter=adjust => Cant open Video Output...

For example:
This Cammand saves the Images to /tmp/vlc_snaps/ but colored:

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cvlc --audio-visual=visual --video-filter=scene --scene-ratio=5 --scene-prefix=img --scene-path=/tmp/vlc_snaps/ --scene-format=png --scene-height=64 --scene-width=128 04\ -\ Too\ Close.mp3

This cammand displayes the audio visual in black and white, but DONT save images!:

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cvlc --audio-visual=visual --video-filter=adjust,scene --saturation=0 --scene-ratio=5 --scene-prefix=img --scene-path=/tmp/vlc_snaps/ --scene-format=png --scene-height=64 --scene-width=128 04\ -\ Too\ Close.mp3

And some Like this:

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cvlc --audio-visual=visual --video-filter=adjust --vout-filter=scene --saturation=0 --scene-ratio=5 --scene-prefix=img --scene-path=/tmp/vlc_snaps/ --scene-format=png --scene-height=64 --scene-width=128 04\ -\ Too\ Close.mp3

Displays the audio visual black and white, but dont saving images.

[nook]

Can nobody help me?

[MichaelMc]

.mp3 Path isn't enclosed within double quotes?

[nook]

The mp3 Path is not the problem, VLC plays my song
My Problem is to load two video filters at the same time, because i need black & with and scene for saving the images, but thats dont work and i dont know how to do this