diff --git a/src/apps/mediaconverter/MediaConverterApp.cpp b/src/apps/mediaconverter/MediaConverterApp.cpp
index 5ad77053e4..4f64f13526 100644
--- a/src/apps/mediaconverter/MediaConverterApp.cpp
+++ b/src/apps/mediaconverter/MediaConverterApp.cpp
@@ -381,11 +381,11 @@ MediaConverterApp::_ConvertFile(BMediaFile* inFile, BMediaFile* outFile,
 	int32 tracks = inFile->CountTracks();
 	for (int32 i = 0; i < tracks && (!outAudTrack || !outVidTrack); i++) {
 		BMediaTrack* inTrack = inFile->TrackAt(i);
-		memset(&inFormat, 0, sizeof(media_format));
+		inFormat.Clear();
 		inTrack->EncodedFormat(&inFormat);
 		if (inFormat.IsAudio() && (audioCodec != NULL)) {
 			inAudTrack = inTrack;
-			memset(&outAudFormat, 0, sizeof(media_format));
+			outAudFormat.Clear();
 			outAudFormat.type = B_MEDIA_RAW_AUDIO;
 			raf = &(outAudFormat.u.raw_audio);
 			inTrack->DecodedFormat(&outAudFormat);
@@ -416,7 +416,7 @@ MediaConverterApp::_ConvertFile(BMediaFile* inFile, BMediaFile* outFile,
 			height = (int32)inFormat.Height();
 
 			// construct desired decoded video format
-			memset(&outVidFormat, 0, sizeof(outVidFormat));
+			outVidFormat.Clear();
 			outVidFormat.type = B_MEDIA_RAW_VIDEO;
 			rvf = &(outVidFormat.u.raw_video);
 			rvf->last_active = (uint32)(height - 1);
diff --git a/src/apps/mediaconverter/MediaConverterWindow.cpp b/src/apps/mediaconverter/MediaConverterWindow.cpp
index 7cf8336c84..3530f89284 100644
--- a/src/apps/mediaconverter/MediaConverterWindow.cpp
+++ b/src/apps/mediaconverter/MediaConverterWindow.cpp
@@ -569,7 +569,7 @@ MediaConverterWindow::BuildAudioVideoMenus()
 	media_file_format* mf_format = &(ffmi->fFileFormat);
 
 	media_format format, outfmt;
-	memset(&format, 0, sizeof(format));
+	format.Clear();
 	media_codec_info codec_info;
 	int32 cookie = 0;
 	CodecMenuItem* cmi;
@@ -622,7 +622,7 @@ MediaConverterWindow::BuildAudioVideoMenus()
 	// construct a generic video format.  Some of these parameters
 	// seem silly, but are needed for R4.5.x, which is more picky
 	// than subsequent BeOS releases will be.
-	memset(&format, 0, sizeof(format));
+	format.Clear();
 	format.type = B_MEDIA_RAW_VIDEO;
 	format.u.raw_video.last_active = (uint32)(240 - 1);
 	format.u.raw_video.orientation = B_VIDEO_TOP_LEFT_RIGHT;
diff --git a/src/apps/mediaconverter/MediaFileInfo.cpp b/src/apps/mediaconverter/MediaFileInfo.cpp
index d5aa4f2ab8..127c96c928 100644
--- a/src/apps/mediaconverter/MediaFileInfo.cpp
+++ b/src/apps/mediaconverter/MediaFileInfo.cpp
@@ -30,7 +30,7 @@ MediaFileInfo::LoadInfo(BMediaFile* file)
 
 	BMediaTrack* track;
 	media_format format;
-	memset(&format, 0, sizeof(format));
+	format.Clear();
 	media_codec_info codecInfo;
 	bool audioDone(false), videoDone(false);
 	bigtime_t audioDuration = 0;
@@ -57,7 +57,7 @@ MediaFileInfo::LoadInfo(BMediaFile* file)
 			"{0, plural, one{# frame} other{# frames}}"));
 
 		if (format.IsVideo()) {
-			memset(&format, 0, sizeof(format));
+			format.Clear();
 			format.type = B_MEDIA_RAW_VIDEO;
 
 			ret = track->DecodedFormat(&format);
@@ -87,7 +87,7 @@ MediaFileInfo::LoadInfo(BMediaFile* file)
 			videoDone = true;
 
 		} else if (format.IsAudio()) {
-			memset(&format, 0, sizeof(format));
+			format.Clear();
 			format.type = B_MEDIA_RAW_AUDIO;
 			ret = track->DecodedFormat(&format);
 			if (ret != B_OK)