Hi,
I want to do a small interface with Air for FFMPEG using Native Process. Mainly, I want to compress an image sequence not starting at 0. To do that, I need to pipe (I think the filename) to ffmpeg. However the pipe doesn't seems to be sent as I get the following from stdout :
video:0kB audio:0kB global headers:0kB muxing overhead -1.#IND00%
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
Anybody did something similar, or maybe knows better than me about pipes and NativeProcess ?
Here is my package
package{ import flash.desktop.NativeProcess; import flash.desktop.NativeProcessStartupInfo; import flash.filesystem.*; import flash.events.*; public class FFmpeg{ public function FFmpeg():void { if(NativeProcess.isSupported) { var appStorageUrl = File.documentsDirectory.url; appStorageUrl = appStorageUrl.lastIndexOf("/") == appStorageUrl.length-1 ? appStorageUrl : appStorageUrl + "/"; var file:File = new File(appStorageUrl + "ffmpeg.exe"); var nativeProcessStartupInfo:NativeProcessStartupInfo = new NativeProcessStartupInfo(); nativeProcessStartupInfo.executable = file; var processArgs:Vector.<String> = new <String>["-y", "-r", "23.976", "-vcodec", "mjpeg", "-pix_fmt", "yuvj444p", "-s", "854x480", "-f", "image2", "-i", "-"]; processArgs.push("-vcodec"); processArgs.push("libx264"); processArgs.push("-f"); processArgs.push("h264"); processArgs.push("-strict"); processArgs.push("experimental"); processArgs.push(appStorageUrl + "test.mp4"); nativeProcessStartupInfo.arguments = processArgs; _process = new NativeProcess(); _process.start(nativeProcessStartupInfo); _process.addEventListener(ProgressEvent.STANDARD_OUTPUT_DATA, onOutputData); _process.addEventListener(ProgressEvent.STANDARD_ERROR_DATA, onErrorData); _process.addEventListener(NativeProcessExitEvent.EXIT, onExit); _process.addEventListener(IOErrorEvent.STANDARD_OUTPUT_IO_ERROR, onIOError); _process.addEventListener(IOErrorEvent.STANDARD_ERROR_IO_ERROR, onIOError); _process.standardInput.writeUTFBytes(appStorageUrl + "test.png") _process.closeInput();//seems to be needed } else { trace("NativeProcess not supported."); } } private function onOutputData(event:ProgressEvent):void{ trace(event.type + event.target.standardOutput.readUTFBytes(event.target.standardOutput.bytesAvailable)); } private function onErrorData(event:ProgressEvent):void{ trace(event.type + event.target.standardError.readUTFBytes(event.target.standardError.bytesAvailable)); } private function onExit(event:NativeProcessExitEvent):void{ trace("Process exited with " + event.exitCode); } private function onIOError(event:IOErrorEvent):void{ trace("onIOError " + event.toString()); } }
} |