Flash :: Use BitmapData.draw With NetStream.appendBytes?
Apr 9, 2011
I am using NetStream.appendBytes() to play a local video (no server involved) in Adobe AIR. I would like to use BitmapData.draw() to take a picture of the video output, but I am getting this error:
Error #2123: Security sandbox violation: BitmapData.draw: cannot access null. No policy files granted access.
Here is some sample code:
package
{
import flash.display.Sprite;
import flash.filesystem.File;
[Code].....
This is only sample code use for an explanation. The error would happen when calling the getImage method while the video is playing. The error mentions a policy file not found. Since the file is loaded locally there isn't really a place to put a policy file. Is there a policy setting somewhere that needs to be set or is the BitmapData.draw feature just not available when using appendBytes?
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Similar Posts:
Nov 14, 2011
the tips: Error #2123: Security sandbox violation: BitmapData.draw: cannot access null. No policy files granted access.
Here is some sample code
[Code]...
This is only sample code use for an explanation. The error would happen when calling the getImage method while the video is playing. The error mentions a policy file not found. Since the file is loaded locally there isn't really a place to put a policy file. Is there a policy setting somewhere that needs to be set or is the BitmapData.draw feature just not available when using appendBytes? It is a local flv file, not an ramp stream from a server.
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Feb 25, 2010
I am working on an app that will take a snapshot of an rtmp stream of an archived video, save it to a file, and ExternalInterface the file name to the hosting page to javascript it up for display.
I actually have all pieces working great. The only time an error is thrown is when I pause the video, seek to somewhere, and then try to take a snapshot. Then there is a runtime error of:
SecurityError: Error #2123: Security sandbox violation: BitmapData.draw: mySwf.swf cannot access rtmp://myFlashServer/myApp. No policy files granted access.I've seen post after post of suggestions and have tried them, but without success.
I have the crossdomain.xml and my FlashMediaServer security setup fine (it is actually working, except for this one glitch). It just seems to be the pause-then-seek-then-BitMapData.draw() combination which is creating issues.
Another weird thing: after the error is thrown, if I resume the stream and take a snapshot, it works flawlessly again.
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Jul 10, 2010
I am trying to figure out how to use http dynamic streaming with flash 10.1 but I can't get the basic functions working. What is the syntax for using appendbytes with a video file?
package com.player {
import flash.display.Stage;
import flash.net.NetConnection;
[code]......
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Jan 9, 2012
I am having an issue with using BitmapData.draw(stage). I am getting the following error:
SecurityError: Error #2123: Security sandbox violation: BitmapData.draw: file:///C|/Documents%20and%20Settings/bla...bla...bla.swf cannot access null. No policy files granted access. Here is a portion of my code:
var bd:BitmapData = new BitmapData(2800, 2100); bd.draw(stage);//this is where the error happens All of the files referenced (.xml/.jpg/.swf) are located in the same local folder as the main .swf. How do I get around this error? The main objective is to print the stage using PrintJob(). I am using Flash Professional CS5.5 and publishing to Flash 10.0/10.1. Let me know if I need to supply any more info.
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Apr 14, 2011
I am trying to play a mp4 video file with netstream.appendbytes method. But the video downloading. When I load a flv video file, the player play the flv video but when I am trying a mp4 video file, don't loading. flv works, but mp4 don't works.
My code is
import flash.net.URLRequest;
import flash.net.URLStream;
import flash.events.ProgressEvent;
import flash.events.Event;
import flash.utils.ByteArray;
[Code] .....
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Apr 15, 2011
i am trying to play a mp4 video file with netstream.appendbytes method. but the video down't loading. when i am load a flv video file, the player play the flv video but when i am trying a mp4 video file, don't loading. flv works, but mp4 don't works.my code is
Code:
import flash.net.URLRequest;
import flash.net.URLStream;
[code].....
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Sep 13, 2011
I have a simple flv player which connects to a CDN which can take header byte range requests if a user wants to skip through a flv without the need for the flv to be 100% loaded.I am using a third party http librabry to add the range header to the request.My code plays the flv but when I try to skip to 30 seconds into the video it just freezes. I beleive the cdn does return the file as i can trace through the bytes and the header has the content-range repsonse (below).[code]
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Oct 28, 2011
A webcam feed is published to a Flash Media Server. Now I want the Augmented Reality layer to be a part of this video capture, rendered into one NetStream.
Has anyone done something like adding a watermark to a NetStream before?
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Dec 29, 2011
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Mar 18, 2009
I am using the draw() method of the BitmapData to encode a jpeg of part of the image. Now this should be easy enough given the object I want to draw to the bitmap is on the stage at design time so I know its location and dimetions exactly! Heres the code I have in place.
Code:
var myBitmapSource:BitmapData = new BitmapData ( street.width, street.height, false, 0x333333);
myBitmapSource.draw(street, null, null, null, new Rectangle( 96, 5, 571, 450 ), true );
I know for a FACT that no part of the street clip I am drawing out is in negative space, and it's registration is (0,0). However, it cuts off A lot of the top of my image. y=5 in the above rectangle is where I need the top to be, but it cuts the top off of the image... even if I change it to 0, it has no effect.
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Jun 30, 2011
I'm making something that requires me to draw() the youtubeplayer Giving me this pretty error:
[Code]...
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Dec 15, 2009
I'm trying to do some lean blitting for an object that rotates by rotating it once at startup and capturing a BitmapData snapshot of each 5 degrees. The problem I'm having is that the draw() method of the BitmapData object is only picking up pixels in the MovieClip that are below and to the right of the registration point. If I change the MC so that the registration point is in the top left corner, I sometimes get what looks like most of the pixels, but the entire object rotates into and out of the frame, since it's rotating around the corner and not the center.
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Oct 2, 2009
I have problem when drawing transparent png image on transparent bitmapData.
code of first frame:
stop();import flash.display.Bitmap;import flash.display.BitmapData;import flash.display.BlendMode;import flash.geom.ColorTransform;import flash.geom.Matrix;
var bmd: BitmapData = new BitmapData(500, 400, true, 0);var bitmap: Bitmap = new flash.display.Bitmap(bmd);addChildAt(bitmap, 1);
[Code]...
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Sep 10, 2009
We have discovered that when we draw one bitmapdata into another bitmapdata using draw, there is an upper bound on the scaling transformAt some point the IBitmapDrawable parameter ceases to be rendered on the target bitmap.Does anyone know what the parameters of this upper bound are? Is this documented somewhere?
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Jun 29, 2011
I have a component that contains 4 layers: (in ascending depth order) bgImage:Sprite, dropZone:Sprite, dropMask:Sprite and line:Sprite. The bgImage is at 0,0, and the other objects are placed at various positive coordinates. dropMask is masking dropZone.At the point of bitmap capture I want to only draw from the dropZone and dropMask layers, so I'm trying this:
removeChild(bgImage);
removeChild(line);
var bmd:BitmapData = new BitmapData(dropMask.width,dropMask.height,true,0);
bmd.draw(this,null,null,null,dropMask.getBounds(this));
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Jul 7, 2011
I have a large sprite...and I'm splitting it into several smaller ones with function bellow. The function works great but the memory usage of my .swf grows dramatically.
private function split_sprite(sp:Sprite,the_parrent:Sprite) {
var region:Rectangle = new Rectangle();
region = sp.getBounds(the_parrent);
[code]....
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Sep 21, 2011
I want to draw text to a bitmapData and allow it to be rotated but rotating the text makes it disappear :(The code I am using resembles something like this :
var tf : TextField = new TextField();
tf.text = "testing";
var mat : Matrix = new Matrix();
[code]....
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Nov 17, 2009
I need to display antialiased systemfonts (because the swf filesize must be small, therefore i can't embedd fonts). So I wrote this script in order to manually antialias the text
Code:
public function renderTextField():BitmapData{
var w:int = this["mainTextField"].textWidth+10;
[code]......
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Jul 21, 2009
i have the following setup:
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Dec 16, 2010
i have a class thats create a class with bitmapData that merge 2 IBitmapDrawable. one of them is 24*20 while the other is 16*16.i want to draw the smaller first in a bitmapData object which its width and height are 24*20 but i want to draw it in the center of the big bounds.
[Code]...
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Jun 8, 2011
This is somewhat of an unusual topic, but hopefully you guys will have a reply that will allow me to go on. I am working on a 2D game following an unusual workflow that is very much 3D based. The workflow is 3D based but the game is flat! This is very important: Graphics are flat images.
Here's the general question. I need a Flash library that loads and is able to deal with 3D models, orient them and convert them in various ways to 2D BitmapDatas. Do you know anything that can do this? To elaborate, I was thinking of the best possible workflows for myself and artists' needs and there is one that I would really enjoy but need serious help to break through. Here it is: Import a textured 3D model from 3DS Max or other similar tools, into Flash At runtime, orient the model the way I want and draw it to BitmapData as a flat 2D colored image. This image is what is supposed to be displayed ultimately. Ideally there shouldn't be a need to display the model at all; just like you can draw MovieClips into BitmapDatas without adding them to the display list. The 3D model is non existent to the user, it's only a workflow convenience for developers, it's a data holder as well as a means to reduce file size.
- Still at runtime, I have to be able to generate a height map: Basically a BitmapData entirely black with, instead of the real texture, a gradient along the 3D Y axis that would have the same 2D shape as the model under its current orientation (i.e. it overlaps perfectly with the flat 2D colored image we made earlier; let's call colored images diffuse maps.) Remember it's along the 3D model's Y axis: If it's a character and its orientation makes the model's shoulder have the lowest Y 3D coordinate while his hips are the highest, the gradient will start from the shoulder. (i.e. it's not always "feet to head", depends on the model's orientation.)
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May 29, 2010
you can see my project here:
[URL]
It uses bitmap data to draw each frame of the video, which is streamed using the netstream class. My question is - how can I optimise the speed at which it plays? It plays fine when the stage is small, but when on full screen it starts to get jerky.
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Mar 23, 2011
I got serious issue while using adobe flash media server (I have media server streaming license). It doesn't allow flash clients to make stream's screenshot (with BitmapData.draw) because this is restricted from server side by default. I found that this trouble can be resolved my updating main.asc file but it seems like replacing main.far with mine main.asc causing error. Could you please help me with resolving this issue because it's extremely important to allow this screens making for user.I used CentOS 5.3 and FMS 4.0.1 r2009 (instaled in /opt/adobe/fms include Apache 2.2). All video is stored in a directory /opt/adobe/fms/applications/vod/media and I put the main.asc file in the directory /opt/adobe/fms/applications/vod/ from the directory /opt/adobe/fms/samples/applications/vod.
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Jan 29, 2010
I wrote a collision detection class that works off using BitmapData.hitTest. Basically, every update, the .draw method is called and then two BitmapData's are hitTest'ed against each other to see if there is a collision.It works pretty well, however if I start rotating the source MovieClip I use for the BitmapData, the transformations don't get registered in the draw method. So what I did was pass through a Matrix in the draw method. That works. But here's the actual issue. If I output the BitmapData to a Bitmap on the stage, I see that Bitmap is, in fact, rotating, but now it's exceeding the bounds (width and height) of the BitmapData. Which is cropping / clipping the image of the source MovieClip.
UPDATE: Basically, when the Bitmap clone of the MovieClip rotates outside the positive co-ordinate space, it doesn't get drawn. It rotates outside the bounds of the BitmapData set width and height. I can multiply the bounds by 2, and then center the bitmap inside the set bounds, but then the origin point is never fixed and the object is always being moved around. Works pretty well, but makes aligning the object to any specific point impossible.Here's my isolated test code. It requires you to have a MovieClip on the stage named "iTest". I used a fairly vertical arrow shape (higher than it is wide) so I could keep track of rotations visually accentuate the clipping problem:
var rotateTimer:Timer = new Timer(10);
function rotateObject_init():void
{
[code].....
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Nov 16, 2011
I want to extract a bitmapdata from one of the first frames of a video flv, and it works correctly in Flash debug with these statements[code]...
When i test this in [url].. not work, I've inserted trace statements before and after this, and only the first are displayed.
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Aug 8, 2010
how can I draw strings onto BitmapData, is there something like Java´s Graphics.drawString()?
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May 20, 2011
the problem may be a simple one but I can't figure it out. I have an image loaded into BitmapData. now I want to take text from a textinput and put it on the BitmapData. Basically it's drawing a text on the BitmapData and get the result as another BitmapData that will consist of the original BitmapData with the text drawn over it on a specified position
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Jan 6, 2012
Right now I only have this code, but I'm not using BitmapData.draw(). How can I write my code using BitmapData.draw()?[code]
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