/**
* Internal helper to fork a process with handbrake and read the values from the process
*
* @param videoTranscoding
* @return true: all ok; false: an error happend along the way
*/
private boolean forkTranscodingProcess(VideoTranscoding videoTranscoding) {
OLATResource video = videoTranscoding.getVideoResource();
VideoModule videoModule = CoreSpringFactory.getImpl(VideoModule.class);
VideoManager videoManager = CoreSpringFactory.getImpl(VideoManager.class);
File masterFile = videoManager.getVideoFile(video);
File transcodingFolder =
((LocalFolderImpl) videoManager.getTranscodingContainer(video)).getBasefile();
File transcodedFile =
new File(
transcodingFolder,
Integer.toString(videoTranscoding.getResolution()) + masterFile.getName());
// mark this as beeing transcoded by this local transcoder
videoTranscoding.setTranscoder(VideoTranscoding.TRANSCODER_LOCAL);
videoTranscoding = videoManager.updateVideoTranscoding(videoTranscoding);
ArrayList<String> cmd = new ArrayList<>();
String tasksetConfig = videoModule.getTranscodingTasksetConfig();
if (tasksetConfig != null && !"Mac OS X".equals(System.getProperty("os.name"))) {
cmd.add("taskset");
cmd.add("-c");
cmd.add(tasksetConfig);
}
cmd.add("HandBrakeCLI");
cmd.add("-i");
cmd.add(masterFile.getAbsolutePath());
cmd.add("-o");
cmd.add(transcodedFile.getAbsolutePath());
cmd.add("--optimize");
cmd.add("--preset");
cmd.add("Normal");
cmd.add("--height");
cmd.add(Integer.toString(videoTranscoding.getResolution()));
cmd.add("--deinterlace");
cmd.add("--crop");
cmd.add("0:0:0:0");
Process process = null;
try {
if (log.isDebug()) {
log.debug(cmd.toString());
}
ProcessBuilder builder = new ProcessBuilder(cmd);
process = builder.start();
return updateVideoTranscodingFromProcessOutput(process, videoTranscoding, transcodedFile);
} catch (IOException e) {
log.error("Could not spawn convert sub process", e);
return false;
} finally {
if (process != null) {
process.destroy();
process = null;
}
}
}
