Index: modules/ffmpeg_in/ffmpeg_in.h
===================================================================
--- modules/ffmpeg_in/ffmpeg_in.h	(revision 4282)
+++ modules/ffmpeg_in/ffmpeg_in.h	(revision 4451)
@@ -120,7 +120,7 @@
 
 	/*for audio packed frames*/
 	u32 frame_start;
-	char audio_buf[AVCODEC_MAX_AUDIO_FRAME_SIZE];
+	char audio_buf[192000];
 	Bool check_h264_isma;
 
 	u32 base_ES_ID;
Index: modules/ffmpeg_in/ffmpeg_load.c
===================================================================
--- modules/ffmpeg_in/ffmpeg_load.c	(revision 4282)
+++ modules/ffmpeg_in/ffmpeg_load.c	(revision 4451)
@@ -44,7 +44,7 @@
 #endif
 
 
-GF_EXPORT
+GPAC_MODULE_EXPORT
 const u32 *QueryInterfaces()
 {
 	static u32 si [] = {
@@ -57,7 +57,7 @@
 	return si;
 }
 
-GF_EXPORT
+GPAC_MODULE_EXPORT
 GF_BaseInterface *LoadInterface(u32 InterfaceType)
 {
 	if (InterfaceType == GF_MEDIA_DECODER_INTERFACE) return FFDEC_Load();
@@ -67,7 +67,7 @@
 	return NULL;
 }
 
-GF_EXPORT
+GPAC_MODULE_EXPORT
 void ShutdownInterface(GF_BaseInterface *ifce)
 {
 	switch (ifce->InterfaceType) {
@@ -81,3 +81,6 @@
 #endif
 	}
 }
+
+
+GPAC_MODULE_STATIC_DELARATION( ffmpeg )
Index: modules/ffmpeg_in/ffmpeg_demux.c
===================================================================
--- modules/ffmpeg_in/ffmpeg_demux.c	(revision 4282)
+++ modules/ffmpeg_in/ffmpeg_demux.c	(revision 4451)
@@ -53,6 +53,18 @@
 #define AVERROR_NOFMT AVERROR(EINVAL)
 #endif /* AVERROR_NOFMT */
 
+
+#if (LIBAVFORMAT_VERSION_MAJOR >= 54) && (LIBAVFORMAT_VERSION_MINOR >= 20)
+
+#define av_find_stream_info(__c)	avformat_find_stream_info(__c, NULL)
+#ifndef FF_API_FORMAT_PARAMETERS
+#define FF_API_FORMAT_PARAMETERS	1
+#endif
+
+#endif
+
+
+
 static u32 FFDemux_Run(void *par)
 {
 	AVPacket pkt;
@@ -76,7 +88,7 @@
 	seek_to = (s64) (AV_TIME_BASE*ffd->seek_time);
 	map_video_time = !ffd->seekable;
 
-	video_init = (seek_to && ffd->video_ch) ? 0 : 1;
+	video_init = (seek_to && ffd->video_ch) ? GF_FALSE : GF_TRUE;
 	seek_audio = seek_video = 0;
 	if (ffd->seekable && (ffd->audio_st>=0)) seek_audio = (u64) (s64) (ffd->seek_time*ffd->audio_tscale.den);
 	if (ffd->seekable && (ffd->video_st>=0)) seek_video = (u64) (s64) (ffd->seek_time*ffd->video_tscale.den);
Index: modules/ffmpeg_in/ffmpeg_decode.c
===================================================================
--- modules/ffmpeg_in/ffmpeg_decode.c	(revision 4282)
+++ modules/ffmpeg_in/ffmpeg_decode.c	(revision 4451)
@@ -38,8 +38,14 @@
 #undef USE_AVCODEC2
 #endif
 
+#if (LIBAVCODEC_VERSION_MAJOR >= 55) 
+#define USE_AVCTX3
+#elif (LIBAVCODEC_VERSION_MAJOR >= 54) && (LIBAVCODEC_VERSION_MINOR >= 35)
+#define USE_AVCTX3
+#endif
 
 
+
 /**
  * Allocates data for FFMPEG decoding
  * \param oldBuffer The oldBuffer (freed if not NULL)
@@ -170,7 +176,12 @@
 		frame = &ffd->base_frame;
 	}
 	if (!(*ctx)){
+
+#ifdef USE_AVCTX3
+	  *ctx = avcodec_alloc_context3(NULL);
+#else
 	  *ctx = avcodec_alloc_context();
+#endif
 	}
 
 	/*private FFMPEG DSI*/
@@ -318,7 +329,11 @@
 		(*ctx)->pix_fmt = ffd->raw_pix_fmt;
 		if ((*ctx)->extradata && strstr((*ctx)->extradata, "BottomUp")) ffd->flipped = 1;
 	} else {
+#ifdef USE_AVCTX3
+		if (avcodec_open2((*ctx), (*codec), NULL )<0) return GF_NON_COMPLIANT_BITSTREAM;
+#else
 		if (avcodec_open((*ctx), (*codec) )<0) return GF_NON_COMPLIANT_BITSTREAM;
+#endif
 	}
 
 	/*setup audio streams*/
@@ -612,10 +627,11 @@
 		if (ffd->frame_start>inBufferLength) ffd->frame_start = 0;
 
 redecode:
-		gotpic = AVCODEC_MAX_AUDIO_FRAME_SIZE;
 #ifdef USE_AVCODEC2
+		gotpic = 0;
 		len = avcodec_decode_audio3(ctx, (short *)ffd->audio_buf, &gotpic, &pkt);
 #else
+		gotpic = AVCODEC_MAX_AUDIO_FRAME_SIZE;
 		len = avcodec_decode_audio2(ctx, (short *)ffd->audio_buf, &gotpic, inBuffer + ffd->frame_start, inBufferLength - ffd->frame_start);
 #endif
 		if (len<0) { ffd->frame_start = 0; return GF_NON_COMPLIANT_BITSTREAM; }
@@ -755,7 +771,13 @@
 			here this means the DSI was broken, so no big deal*/
 			avcodec_close(ctx);
 			*codec = avcodec_find_decoder(CODEC_ID_H263);
+
+#ifdef USE_AVCTX3
+			if (! (*codec) || (avcodec_open2(ctx, *codec, NULL)<0)) return GF_NON_COMPLIANT_BITSTREAM;
+#else
 			if (! (*codec) || (avcodec_open(ctx, *codec)<0)) return GF_NON_COMPLIANT_BITSTREAM;
+#endif
+
 #if USE_AVCODEC2
 			if (avcodec_decode_video2(ctx, frame, &gotpic, &pkt) < 0) {
 #else
@@ -765,7 +787,11 @@
 				avcodec_close(ctx);
 				*codec = avcodec_find_decoder(old_codec);
 				assert(*codec);
+#ifdef USE_AVCTX3
+				avcodec_open2(ctx, *codec, NULL);
+#else
 				avcodec_open(ctx, *codec);
+#endif
 				return GF_NON_COMPLIANT_BITSTREAM;
 			}
 		}
@@ -979,7 +1005,7 @@
 	else if (StreamType==GF_STREAM_VISUAL) {
 
 		/*fixme - we should use some priority rather than declare ffmpeg can't handle svc*/
-		if (esd->decoderConfig->objectTypeIndication == GPAC_OTI_VIDEO_AVC) {
+		if (esd->decoderConfig->objectTypeIndication == GPAC_OTI_VIDEO_AVC){
 			if (esd->decoderConfig->decoderSpecificInfo && esd->decoderConfig->decoderSpecificInfo->data) {
 				Bool is_svc = 0;
 				u32 i, count;
@@ -1003,7 +1029,7 @@
 				gf_odf_avc_cfg_del(cfg);
 				return (is_svc || esd->decoderConfig->rvc_config || esd->decoderConfig->predefined_rvc_config) ? GF_CODEC_MAYBE_SUPPORTED : GF_CODEC_SUPPORTED;
 			}
-			if (esd->decoderConfig->rvc_config || esd->decoderConfig->predefined_rvc_config) return GF_CODEC_MAYBE_SUPPORTED;
+			if (esd->decoderConfig->rvc_config || esd->decoderConfig->predefined_rvc_config || esd->has_ref_base) return GF_CODEC_MAYBE_SUPPORTED;
 			return GF_CODEC_SUPPORTED;
 		}
 
@@ -1011,7 +1037,8 @@
 		/*MPEG-4 v1 simple profile*/
 		case GPAC_OTI_VIDEO_MPEG4_PART2: codec_id = CODEC_ID_MPEG4; break;
 		/*H264 (not std OTI, just the way we use it internally)*/
-		case GPAC_OTI_VIDEO_AVC: codec_id = CODEC_ID_H264; break;
+		case GPAC_OTI_VIDEO_AVC:
+			codec_id = CODEC_ID_H264; break;
 		/*MPEG1 video*/
 		case GPAC_OTI_VIDEO_MPEG1:
 		/*MPEG2 video*/