diff --git a/openvidu-test-e2e/src/test/java/io/openvidu/test/e2e/OpenViduTestAppE2eTest.java b/openvidu-test-e2e/src/test/java/io/openvidu/test/e2e/OpenViduTestAppE2eTest.java
index 94b2eec6..54e83f1b 100644
--- a/openvidu-test-e2e/src/test/java/io/openvidu/test/e2e/OpenViduTestAppE2eTest.java
+++ b/openvidu-test-e2e/src/test/java/io/openvidu/test/e2e/OpenViduTestAppE2eTest.java
@@ -2762,7 +2762,7 @@ public class OpenViduTestAppE2eTest {
 		return "data:image/png;base64," + screenshotBase64;
 	}
 
-	private boolean recordedFileFine(File file, Recording recording) {
+	private boolean recordedFileFine(File file, Recording recording) throws IOException {
 		this.checkMultimediaFile(file, recording.hasAudio(), recording.hasVideo(), recording.getDuration(),
 				recording.getResolution(), "aac", "h264", true);
 
@@ -2790,7 +2790,7 @@ public class OpenViduTestAppE2eTest {
 	}
 
 	private void checkIndividualRecording(String recPath, Recording recording, int numberOfVideoFiles,
-			String audioDecoder, String videoDecoder, boolean checkAudio) {
+			String audioDecoder, String videoDecoder, boolean checkAudio) throws IOException {
 
 		// Should be only 2 files: zip and metadata
 		File folder = new File(recPath);
@@ -2864,7 +2864,7 @@ public class OpenViduTestAppE2eTest {
 	}
 
 	private void checkMultimediaFile(File file, boolean hasAudio, boolean hasVideo, double duration, String resolution,
-			String audioDecoder, String videoDecoder, boolean checkAudio) {
+			String audioDecoder, String videoDecoder, boolean checkAudio) throws IOException {
 		// Check tracks, duration, resolution, framerate and decoders
 		MultimediaFileMetadata metadata = new MultimediaFileMetadata(file.getAbsolutePath());
 
@@ -2945,11 +2945,13 @@ public class OpenViduTestAppE2eTest {
 	}
 
 	private void stopKms() {
+		log.info("Stopping KMS");
 		commandLine.executeCommand("sudo kill -9 $(pidof kurento-media-server)");
 	}
 
 	private void startKms() {
-		commandLine.executeCommand("/usr/bin/kurento-media-server");
+		log.info("Starting KMS");
+		commandLine.executeCommand("/usr/bin/kurento-media-server &> /kms.log &");
 	}
 
 	private void restartKms() {
diff --git a/openvidu-test-e2e/src/test/java/io/openvidu/test/e2e/utils/CommandLineExecutor.java b/openvidu-test-e2e/src/test/java/io/openvidu/test/e2e/utils/CommandLineExecutor.java
index 2c100997..01932dd1 100644
--- a/openvidu-test-e2e/src/test/java/io/openvidu/test/e2e/utils/CommandLineExecutor.java
+++ b/openvidu-test-e2e/src/test/java/io/openvidu/test/e2e/utils/CommandLineExecutor.java
@@ -26,7 +26,7 @@ public class CommandLineExecutor {
 		String output = "";
 		Process p = null;
 		try {
-			p = Runtime.getRuntime().exec(command);
+			p = Runtime.getRuntime().exec((new String[] { "/bin/sh", "-c", command }));
 			p.waitFor();
 			BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
 			String line = "";
diff --git a/openvidu-test-e2e/src/test/java/io/openvidu/test/e2e/utils/MultimediaFileMetadata.java b/openvidu-test-e2e/src/test/java/io/openvidu/test/e2e/utils/MultimediaFileMetadata.java
index e95b2545..860ae08b 100644
--- a/openvidu-test-e2e/src/test/java/io/openvidu/test/e2e/utils/MultimediaFileMetadata.java
+++ b/openvidu-test-e2e/src/test/java/io/openvidu/test/e2e/utils/MultimediaFileMetadata.java
@@ -17,6 +17,12 @@
 
 package io.openvidu.test.e2e.utils;
 
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -48,12 +54,20 @@ public class MultimediaFileMetadata {
 	private int videoHeight;
 	private int framerate;
 
-	public MultimediaFileMetadata(String fileAbsolutePath) {
+	public MultimediaFileMetadata(String fileAbsolutePath) throws IOException {
 
 		log.info("Extracting media metadata info from file {}", fileAbsolutePath);
 
 		this.json = this.executeFfprobeCommand(fileAbsolutePath);
 		this.formatJson = json.get("format").getAsJsonObject();
+
+		if (formatJson.get("duration") == null) {
+			// Webm file has not been properly closed (i.e. media server stopped)
+			this.fixWebmFile(fileAbsolutePath);
+			this.json = this.executeFfprobeCommand(fileAbsolutePath);
+			this.formatJson = json.get("format").getAsJsonObject();
+		}
+
 		JsonArray streams = json.get("streams").getAsJsonArray();
 
 		streams.forEach(e -> { // Only supposed for 2 streams max
@@ -142,6 +156,16 @@ public class MultimediaFileMetadata {
 		return this.parser.parse(this.executer.executeCommand(cmd)).getAsJsonObject();
 	}
 
+	private void fixWebmFile(String filePath) throws IOException {
+		Path source = Paths.get(filePath);
+		String pathCopy = null;
+		pathCopy = Files.move(source, source.resolveSibling("COPY.webm")).toString();
+		log.warn("Fixing file '{}' with ffmpeg", filePath);
+		String cmd = "ffmpeg -i " + pathCopy + " -vcodec copy -acodec copy " + filePath;
+		this.executer.executeCommand(cmd);
+		new File(pathCopy).delete();
+	}
+
 	@Override
 	public String toString() {
 		return "{duration=" + this.duration + ", format=" + this.format + ", bitrate=" + this.bitrate + ", hasAudio="