// ...)
wrapper = new FFMpegWrapper(tmpFile, tmpWorkingDir);
wrapper.setExecutableLocator(locator);
final ResourceResolver resolver = getResourceResolver(wfSession.getSession());
final Resource assetResource = asset.adaptTo(Resource.class);
final Resource metadata = resolver.getResource(assetResource, JCR_CONTENT + "/" + METADATA_FOLDER);
if (null != metadata) {
final Node metadataNode = metadata.adaptTo(Node.class);