diff --git a/android/ijkplayer/ijkplayer-example/src/main/java/tv/danmaku/ijk/media/example/widget/media/IjkVideoView.java b/android/ijkplayer/ijkplayer-example/src/main/java/tv/danmaku/ijk/media/example/widget/media/IjkVideoView.java
index da787c682e43967cf74521179e7b2367c2269970..d4200045a8aaac865529c0dad4f2cf77464aa8a2 100755
--- a/android/ijkplayer/ijkplayer-example/src/main/java/tv/danmaku/ijk/media/example/widget/media/IjkVideoView.java
+++ b/android/ijkplayer/ijkplayer-example/src/main/java/tv/danmaku/ijk/media/example/widget/media/IjkVideoView.java
@@ -256,7 +256,7 @@ public class IjkVideoView extends FrameLayout implements MediaController.MediaPl
     public void setVideoPath(String path) {
         if (path.contains("adaptationSet")){
             mManifestString = path;
-            setVideoURI(Uri.EMPTY);
+            setVideoURI(Uri.parse("ijklas:"));
         } else {
             setVideoURI(Uri.parse(path));
         }
@@ -1044,7 +1044,8 @@ public class IjkVideoView extends FrameLayout implements MediaController.MediaPl
                     ijkMediaPlayer.native_setLogLevel(IjkMediaPlayer.IJK_LOG_DEBUG);
 
                     if (mManifestString != null) {
-                        ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "is-manifest", 1);
+                        ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "iformat", "ijklas");
+                        ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "find_stream_info", 0);
                         ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "manifest_string", mManifestString);
                     }
                     if (mSettings.getUsingMediaCodec()) {
diff --git a/ijkmedia/ijkplayer/ff_ffplay.c b/ijkmedia/ijkplayer/ff_ffplay.c
index eae2dae484c8bd376a9a96552065275d12135422..714a8c9d6186682e8fee119bd8355b06217f438e 100755
--- a/ijkmedia/ijkplayer/ff_ffplay.c
+++ b/ijkmedia/ijkplayer/ff_ffplay.c
@@ -48,7 +48,6 @@
 #include "libavutil/avassert.h"
 #include "libavutil/time.h"
 #include "libavformat/avformat.h"
-#include "ijkavformat/ijklas.h"
 #if CONFIG_AVDEVICE
 #include "libavdevice/avdevice.h"
 #endif
@@ -3117,13 +3116,9 @@ static int read_thread(void *arg)
 
     if (ffp->iformat_name)
         is->iformat = av_find_input_format(ffp->iformat_name);
- 
-    if (ffp->is_manifest) {
-        extern AVInputFormat ijkff_las_demuxer;
-        is->iformat = &ijkff_las_demuxer;
-        av_dict_set_int(&ffp->format_opts, "las_player_statistic", (intptr_t) (&ffp->las_player_statistic), 0);
-        ffp->find_stream_info = false;
-    }
+
+    av_dict_set_intptr(&ffp->format_opts, "video_cache_ptr", (intptr_t)&ffp->stat.video_cache, 0);
+    av_dict_set_intptr(&ffp->format_opts, "audio_cache_ptr", (intptr_t)&ffp->stat.audio_cache, 0);
     err = avformat_open_input(&ic, is->filename, is->iformat, &ffp->format_opts);
     if (err < 0) {
         print_error(is->filename, err);
@@ -4001,8 +3996,6 @@ FFPlayer *ffp_create()
     ffp->meta = ijkmeta_create();
 
     av_opt_set_defaults(ffp);
-
-    las_stat_init(&ffp->las_player_statistic);
     return ffp;
 }
 
@@ -4022,7 +4015,6 @@ void ffp_destroy(FFPlayer *ffp)
     ffpipenode_free_p(&ffp->node_vdec);
     ffpipeline_free_p(&ffp->pipeline);
     ijkmeta_destroy_p(&ffp->meta);
-    las_stat_destroy(&ffp->las_player_statistic);
     ffp_reset_internal(ffp);
 
     SDL_DestroyMutexP(&ffp->af_mutex);
@@ -4637,18 +4629,12 @@ void ffp_audio_statistic_l(FFPlayer *ffp)
 {
     VideoState *is = ffp->is;
     ffp_track_statistic_l(ffp, is->audio_st, &is->audioq, &ffp->stat.audio_cache);
-    if (ffp->is_manifest) {
-          las_set_audio_cached_duration_ms(&ffp->las_player_statistic, ffp->stat.audio_cache.duration);
-    }
 }
 
 void ffp_video_statistic_l(FFPlayer *ffp)
 {
     VideoState *is = ffp->is;
     ffp_track_statistic_l(ffp, is->video_st, &is->videoq, &ffp->stat.video_cache);
-    if (ffp->is_manifest) {
-        las_set_video_cached_duration_ms(&ffp->las_player_statistic, ffp->stat.video_cache.duration);
-    }
 }
 
 void ffp_statistic_l(FFPlayer *ffp)
diff --git a/ijkmedia/ijkplayer/ff_ffplay_def.h b/ijkmedia/ijkplayer/ff_ffplay_def.h
index 7ca73f527984479dd4945bc995e00c44e91c594e..00f19f3c4d36c3df4c485b3edd8380d187d8564b 100755
--- a/ijkmedia/ijkplayer/ff_ffplay_def.h
+++ b/ijkmedia/ijkplayer/ff_ffplay_def.h
@@ -65,7 +65,6 @@
 #include "ff_ffmsg_queue.h"
 #include "ff_ffpipenode.h"
 #include "ijkmeta.h"
-#include "ijkavformat/ijklas.h"
 
 #define DEFAULT_HIGH_WATER_MARK_IN_BYTES        (256 * 1024)
 
@@ -721,8 +720,6 @@ typedef struct FFPlayer {
     char *mediacodec_default_name;
     int ijkmeta_delay_init;
     int render_wait_start;
-    int is_manifest;
-    LasPlayerStatistic las_player_statistic;
 } FFPlayer;
 
 #define fftime_to_milliseconds(ts) (av_rescale(ts, 1000, AV_TIME_BASE))
@@ -833,7 +830,6 @@ inline static void ffp_reset_internal(FFPlayer *ffp)
     ffp->mediacodec_default_name        = NULL; // option
     ffp->ijkmeta_delay_init             = 0; // option
     ffp->render_wait_start              = 0;
-    ffp->is_manifest                    = 0;
 
     ijkmeta_reset(ffp->meta);
 
diff --git a/ijkmedia/ijkplayer/ff_ffplay_options.h b/ijkmedia/ijkplayer/ff_ffplay_options.h
index 5384d945d919ca6ecc963b8dd0c1d1b552d772e8..b021c26e55d1dca03ce73086dc92b080ca0e0ffa 100644
--- a/ijkmedia/ijkplayer/ff_ffplay_options.h
+++ b/ijkmedia/ijkplayer/ff_ffplay_options.h
@@ -206,9 +206,6 @@ static const AVOption ffp_context_options[] = {
         OPTION_OFFSET(ijkmeta_delay_init),      OPTION_INT(0, 0, 1) },
     { "render-wait-start",          "render wait start",
         OPTION_OFFSET(render_wait_start),      OPTION_INT(0, 0, 1) },
-    { "is-manifest",          "is manifest string",
-      OPTION_OFFSET(is_manifest),      OPTION_INT(0, 0, 1) },
-
     { NULL }
 };
 
diff --git a/ijkmedia/ijkplayer/ijkavformat/allformats.c b/ijkmedia/ijkplayer/ijkavformat/allformats.c
index c220949f9db67a1257884e21ab4bc6dbc3638927..49dd3b61bc3e5f740b2682a9b76ba5be0c5093e0 100644
--- a/ijkmedia/ijkplayer/ijkavformat/allformats.c
+++ b/ijkmedia/ijkplayer/ijkavformat/allformats.c
@@ -87,5 +87,6 @@ void ijkav_register_all(void)
     IJK_REGISTER_PROTOCOL(ijksegment);
     /* demuxers */
     IJK_REGISTER_DEMUXER(ijklivehook);
+    IJK_REGISTER_DEMUXER(ijklas);
     av_log(NULL, AV_LOG_INFO, "===== custom modules end =====\n");
 }
diff --git a/ijkmedia/ijkplayer/ijkavformat/ijklas.c b/ijkmedia/ijkplayer/ijkavformat/ijklas.c
index fea1981989b7a19e8528e8cafca1c49468700454..642a50006fdf4e483680b583f34989b1e42a5b26 100644
--- a/ijkmedia/ijkplayer/ijkavformat/ijklas.c
+++ b/ijkmedia/ijkplayer/ijkavformat/ijklas.c
@@ -28,6 +28,7 @@
 #include "ijksdl/ijksdl_thread.h"
 #include "ijksdl/ijksdl_mutex.h"
 #include "cJSON.h"
+#include "ff_ffplay_def.h"
 
 #include "ijklas.h"
 
@@ -184,10 +185,11 @@ typedef struct PlayList {
 
     // cur playlist Qos
     LasStatistic* las_statistic;
-    LasPlayerStatistic* las_player_statistic;
     bool is_stream_ever_opened;
     int64_t bytes_read;
     unsigned session_id;
+    FFTrackCacheStatistic* video_cache;
+    FFTrackCacheStatistic* audio_cache;
 } PlayList;
 
 typedef struct LasContext {
@@ -204,13 +206,21 @@ typedef struct LasContext {
     char* manifest_string;
     int64_t network;
     char* abr_history_data;
-    int64_t las_player_statistic;
     char* live_adapt_config;
     AVDictionary* avio_opts;
 
     // all info of las is in it
     PlayList playlist;
+    LasStatistic las_statistic;
     unsigned session_id;
+    int64_t video_cache_ptr;
+    int64_t audio_cache_ptr;
+    int las_switch_mode;
+    int64_t first_audio_packet_pts;
+    int block_duration;
+    int audio_only_request;
+    int audio_only_response;
+    bool stream_reopened;
 } LasContext;
 
 #pragma mark common util
@@ -242,128 +252,38 @@ static inline void _log(unsigned session_id, const char* func_name, int av_log_l
 #define algo_error(...) log_debug_tag(thiz->session_id, AV_LOG_ERROR, __VA_ARGS__)
 
 #pragma mark PlayerControl
-int las_stat_init(LasPlayerStatistic* stat) {
-    memset(stat, 0, sizeof(LasPlayerStatistic));
-    stat->las_switch_mode = LAS_AUTO_MODE;
-    return pthread_mutex_init(&stat->control_mutex, NULL);
+int get_switch_mode(AVFormatContext* format) {
+    LasContext* c = format->priv_data;
+    return c->las_switch_mode;
 }
 
-void las_stat_destroy(LasPlayerStatistic* stat) {
-    pthread_mutex_destroy(&stat->control_mutex);
+int64_t get_first_audio_packet_pts(AVFormatContext* format) {
+    LasContext* c = format->priv_data;
+    return c->first_audio_packet_pts;
 }
 
-int las_get_switch_mode(LasPlayerStatistic* stat) {
-    pthread_mutex_lock(&stat->control_mutex);
-    int switch_mode = stat->las_switch_mode;
-    pthread_mutex_unlock(&stat->control_mutex);
-    return switch_mode;
+int get_audio_only_request(AVFormatContext* format) {
+    LasContext* c = format->priv_data;
+    return c->audio_only_request;
 }
 
-void las_set_switch_mode(LasPlayerStatistic* stat, int switch_mode) {
-    pthread_mutex_lock(&stat->control_mutex);
-    stat->las_switch_mode = switch_mode;
-    pthread_mutex_unlock(&stat->control_mutex);
+void set_audio_only_response(AVFormatContext* format, int audio_only) {
+    LasContext* c = format->priv_data;
+    c->audio_only_response = audio_only;
 }
 
-int64_t las_get_first_audio_packet_pts(LasPlayerStatistic* stat) {
-    pthread_mutex_lock(&stat->control_mutex);
-    int64_t ret = stat->first_audio_packet_pts;
-    pthread_mutex_unlock(&stat->control_mutex);
-    return ret;
-}
-
-void las_set_first_audio_packet_pts(LasPlayerStatistic* stat, int64_t first_audio_packet_pts) {
-    pthread_mutex_lock(&stat->control_mutex);
-    stat->first_audio_packet_pts = first_audio_packet_pts;
-    pthread_mutex_unlock(&stat->control_mutex);
-}
-
-int las_get_audio_only_request(LasPlayerStatistic* stat) {
-    pthread_mutex_lock(&stat->control_mutex);
-    int ret = stat->audio_only_request;
-    pthread_mutex_unlock(&stat->control_mutex);
-    return ret;
-}
-
-void las_set_audio_only_request(LasPlayerStatistic* stat, int audio_only) {
-    pthread_mutex_lock(&stat->control_mutex);
-    stat->audio_only_request = audio_only;
-    pthread_mutex_unlock(&stat->control_mutex);
-}
-
-int las_get_audio_only_response(LasPlayerStatistic* stat) {
-    pthread_mutex_lock(&stat->control_mutex);
-    int ret = stat->audio_only_response;
-    pthread_mutex_unlock(&stat->control_mutex);
-    return ret;
-}
-
-void las_set_audio_only_response(LasPlayerStatistic* stat, int audio_only) {
-    pthread_mutex_lock(&stat->control_mutex);
-    stat->audio_only_response = audio_only;
-    pthread_mutex_unlock(&stat->control_mutex);
-}
-
-int64_t las_get_audio_cached_duration_ms(LasPlayerStatistic* stat) {
-    pthread_mutex_lock(&stat->control_mutex);
-    int64_t ret = stat->audio_cached_duration_ms;
-    pthread_mutex_unlock(&stat->control_mutex);
-    return ret;
-}
-
-void las_set_audio_cached_duration_ms(LasPlayerStatistic* stat, int64_t audio_cached_duration_ms) {
-    pthread_mutex_lock(&stat->control_mutex);
-    stat->audio_cached_duration_ms = audio_cached_duration_ms;
-    pthread_mutex_unlock(&stat->control_mutex);
-}
-
-int64_t las_get_video_cached_duration_ms(LasPlayerStatistic* stat) {
-    pthread_mutex_lock(&stat->control_mutex);
-    int64_t ret = stat->video_cached_duration_ms;
-    pthread_mutex_unlock(&stat->control_mutex);
-    return ret;
-}
-
-void las_set_video_cached_duration_ms(LasPlayerStatistic* stat, int64_t video_cached_duration_ms) {
-    pthread_mutex_lock(&stat->control_mutex);
-    stat->video_cached_duration_ms = video_cached_duration_ms;
-    pthread_mutex_unlock(&stat->control_mutex);
-}
-
-bool las_get_stream_reopened(LasPlayerStatistic* stat) {
-    pthread_mutex_lock(&stat->control_mutex);
-    bool ret = stat->stream_reopened;
-    pthread_mutex_unlock(&stat->control_mutex);
-    return ret;
-}
-
-void las_set_stream_reopened(LasPlayerStatistic* stat, bool stream_reopened) {
-    pthread_mutex_lock(&stat->control_mutex);
-    stat->stream_reopened = stream_reopened;
-    pthread_mutex_unlock(&stat->control_mutex);
+void set_stream_reopened(AVFormatContext* format, bool stream_reopened) {
+    LasContext* c = format->priv_data;
+    c->stream_reopened = stream_reopened;
 }
 
-#pragma mark PlayerStat
-int32_t LasPlayerStatistic_get_downloading_bitrate(LasPlayerStatistic* stat) {
-    if (stat->las_stat.bitrate_downloading > 0) {
-        return stat->las_stat.bitrate_downloading;
+int64_t get_cache_duration_ms(FFTrackCacheStatistic* cache) {
+    if (cache) {
+        return cache->duration;
     }
     return 0;
 }
 
-char* LasPlayerStatistic_get_downloading_url(LasPlayerStatistic* stat) {
-    return stat->las_stat.cur_playing_url;
-}
-
-int LasPlayerStatistic_get_http_reading_error(LasPlayerStatistic* stat) {
-    if (stat->las_stat.cur_rep_http_reading_error != 0) {
-        return stat->las_stat.cur_rep_http_reading_error;
-    } else {
-        return 0;
-    }
-}
-
-
 #pragma mark PlayListLock
 static int64_t get_bytes_read(PlayList* p) {
     SDL_LockMutex(p->las_mutex);
@@ -692,8 +612,8 @@ void LasStatistic_on_read_packet(LasStatistic* stat, PlayList* playlist) {
 
 void LasStatistic_on_buffer_time(LasStatistic* stat, PlayList* playlist) {
     if (stat && playlist) {
-        stat->cached_a_dur_ms = las_get_audio_cached_duration_ms(playlist->las_player_statistic);
-        stat->cached_v_dur_ms = las_get_video_cached_duration_ms(playlist->las_player_statistic);
+        stat->cached_a_dur_ms = get_cache_duration_ms(playlist->audio_cache);
+        stat->cached_v_dur_ms = get_cache_duration_ms(playlist->video_cache);;
         stat->cached_tag_dur_ms = TagQueue_get_duration_ms(&playlist->tag_queue);
         log_info("a_buffer_time_ms=%lld, v_buffer_time_ms=%lld, CachedTagQueue_ms=%lld",
                  stat->cached_a_dur_ms, stat->cached_v_dur_ms, stat->cached_tag_dur_ms);
@@ -724,8 +644,8 @@ void LasStatistic_on_bandwidth_update(PlayList* playlist, MultiRateAdaption* ada
 void LasStatistic_on_rep_switch_count(LasStatistic* stat, PlayList* playlist) {
     if (stat) {
         stat->rep_switch_cnt++;
-        stat->switch_point_a_buffer_ms = las_get_audio_cached_duration_ms(playlist->las_player_statistic);
-        stat->switch_point_v_buffer_ms = las_get_video_cached_duration_ms(playlist->las_player_statistic);
+        stat->switch_point_a_buffer_ms = get_cache_duration_ms(playlist->audio_cache);
+        stat->switch_point_v_buffer_ms = get_cache_duration_ms(playlist->video_cache);
     }
 }
 
@@ -819,7 +739,7 @@ void MultiRateAdaption_init(MultiRateAdaption* thiz, AdaptiveConfig config,
         thiz->current -= 1;
     }
 
-    int switch_mode = las_get_switch_mode(playlist->las_player_statistic);
+    int switch_mode = get_switch_mode(playlist->outermost_ctx);
     if (switch_mode >= 0 && switch_mode < thiz->n_bitrates) {
         thiz->current = rep_index_2_local_index(thiz, switch_mode);
     }
@@ -858,7 +778,7 @@ bool update_stable_buffer(MultiRateAdaption* thiz, double buffered) {
  * check buffer periodically
  */
 void check_buffer(MultiRateAdaption* thiz, PlayList* playlist) {
-    double buffered = las_get_audio_cached_duration_ms(playlist->las_player_statistic) / 1000.0;
+    double buffered = get_cache_duration_ms(playlist->audio_cache) / 1000.0;
     bool is_buffer_stable = update_stable_buffer(thiz, buffered);
     if (is_buffer_stable && thiz->current + 1 < thiz->n_bitrates) {
         thiz->generated_speed = thiz->levels[thiz->current + 1];
@@ -919,12 +839,16 @@ bool is_speed_enough(MultiRateAdaption* thiz, double speed) {
 }
 
 int32_t next_local_rate_index(MultiRateAdaption* thiz, double speed, double buffered) {
+    if (thiz->buffer_index <= 1 && buffered <= 0.1) {
+        algo_info("empty past buffer");
+        return thiz->current;
+    }
     double buffer_speed = get_buffer_speed(thiz, buffered);
     double smoothed_speed = get_smoothed_speed(thiz, speed);
     algo_info("gop_speed: %.0f, smoothed_speed: %.0f", speed, smoothed_speed);
 
     double predicted_buffered = get_predicted_buffer(thiz, buffered);
-    algo_info("s: %.0f, predicted_buffered: %.1f", buffer_speed, predicted_buffered);
+    algo_info("buffer_speed: %.0f, buffered: %.1f, predicted_buffered: %.1f", buffer_speed, buffered, predicted_buffered);
 
     int32_t next_index = thiz->current;
     if (predicted_buffered < thiz->conf.buffer_lower_limit_second
@@ -1189,10 +1113,10 @@ int64_t GopReader_download_gop(GopReader* reader, MultiRateAdaption* adaption, P
             return ret;
         }
 
-        int request = las_get_audio_only_request(playlist->las_player_statistic);
+        int request = get_audio_only_request(playlist->outermost_ctx);
         if (reader->is_audio_only != request) {
             reader->is_audio_only = request;
-            int64_t current_playing_audio_ts = las_get_first_audio_packet_pts(playlist->las_player_statistic);
+            int64_t current_playing_audio_ts = get_first_audio_packet_pts(playlist->outermost_ctx);
             log_info("current_playing_audio_ts: %lld", current_playing_audio_ts);
             int64_t request_ts = current_playing_audio_ts - playlist->adaptation_set.duration / 2;
             reader->last_gop_start_ts = request_ts > 0 ? request_ts : 0;
@@ -1225,9 +1149,9 @@ int64_t GopReader_download_gop(GopReader* reader, MultiRateAdaption* adaption, P
 
                 adaption->next_expected_rep_index = next_representation_id(
                         adaption,
-                        las_get_switch_mode(playlist->las_player_statistic),
+                        get_switch_mode(playlist->outermost_ctx),
                         speed,
-                        las_get_audio_cached_duration_ms(playlist->las_player_statistic) / 1000.0);
+                        get_cache_duration_ms(playlist->audio_cache) / 1000.0);
                 if (reader->rep_index != adaption->next_expected_rep_index) {
                     LasStatistic_on_adaption_adapted(playlist, adaption);
                     LasStatistic_on_rep_switch_count(playlist->las_statistic, playlist);
@@ -1505,7 +1429,7 @@ int PlayList_open_rep(PlayList* playlist, FlvTag* tag, AVFormatContext* s) {
         }
         playlist->is_stream_ever_opened = true;
     } else {
-        las_set_stream_reopened(playlist->las_player_statistic, true);
+        set_stream_reopened(playlist->outermost_ctx, true);
     }
 
     for (int j = 0; j < playlist->ctx->nb_streams && j < MAX_STREAM_NUM; j++) {
@@ -1520,7 +1444,7 @@ int PlayList_open_rep(PlayList* playlist, FlvTag* tag, AVFormatContext* s) {
     }
 
     playlist->cur_rep_index = tag->rep_index;
-    las_set_audio_only_response(playlist->las_player_statistic, tag->audio_only);
+    set_audio_only_response(playlist->outermost_ctx, tag->audio_only);
     log_info("open_index:%d, audio_only:%d finished", tag->rep_index, tag->audio_only);
     return 0;
 
@@ -1763,7 +1687,6 @@ int parse_root(char* file_name, PlayList* c) {
 }
 
 int parse_adapt_config(char* config_string, AdaptiveConfig* config, PlayList* playlist) {
-    LasPlayerStatistic* player_stat = playlist->las_player_statistic;
     cJSON* root = cJSON_Parse(config_string);
     if (!root)
         return LAS_ERROR_ADAPT_CONFIG_JSON;
@@ -1835,7 +1758,7 @@ static int las_close(AVFormatContext* s) {
 }
 
 static int las_probe(AVProbeData* p) {
-    if (p->filename && strstr(p->filename, ".las"))
+    if (p->filename && av_strstart(p->filename, "ijklas:", NULL))
         return AVPROBE_SCORE_MAX;
 
     return 0;
@@ -1861,20 +1784,19 @@ static int las_read_header(AVFormatContext* s) {
     playlist->session_id = c->session_id;
 
     av_dict_set(&c->avio_opts, "timeout", "10000000", 0);
-    
     if ((ret = parse_root(c->manifest_string, playlist)) < 0) {
         log_error("Illegal manifest Json String");
         goto fail;
     }
-    log_info("Finish parsing las manifest (player)");
-    playlist->las_player_statistic = (LasPlayerStatistic*)c->las_player_statistic;
-    if (playlist->las_player_statistic) {
-        playlist->las_statistic = &playlist->las_player_statistic->las_stat;
-        log_info("playlist->stat: %p, las_statistic: %p", playlist->las_player_statistic, playlist->las_statistic);
+    log_info("Finish parsing las manifest, switch_mode:%d", c->las_switch_mode);
+    if (c->audio_cache_ptr && c->video_cache_ptr) {
+        playlist->video_cache = (FFTrackCacheStatistic*)c->video_cache_ptr;
+        playlist->audio_cache = (FFTrackCacheStatistic*)c->audio_cache_ptr;
     } else {
-        log_error("las_player_statistic is null");
+        log_error("FFTrackCacheStatistic is null");
         goto fail;
     }
+    playlist->las_statistic = &c->las_statistic;
     LasStatistic_init(playlist->las_statistic, playlist);
 
     RateAdaptConfig_default_init(&config, playlist);
@@ -2089,10 +2011,6 @@ static const AVOption las_options[] = {
         "device-network-type", "device-network-type",
         OFFSET(network), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, FLAGS
     },
-    {
-        "las_player_statistic", "las_player_statistic",
-        OFFSET(las_player_statistic), AV_OPT_TYPE_INT64, {.i64 = 0}, INT64_MIN, INT64_MAX, FLAGS
-    },
     {
         "liveAdaptConfig", "liveAdaptConfig",
         OFFSET(live_adapt_config), AV_OPT_TYPE_STRING, { .str = NULL }, CHAR_MIN, CHAR_MAX, FLAGS
@@ -2101,20 +2019,52 @@ static const AVOption las_options[] = {
         "session_id", "session_id",
         OFFSET(session_id), AV_OPT_TYPE_INT, {.i64 = 0}, INT32_MIN, INT32_MAX, FLAGS
     },
+    {
+        "video_cache_ptr", "video_cache_ptr",
+        OFFSET(video_cache_ptr), AV_OPT_TYPE_INT64, {.i64 = 0}, INT64_MIN, INT64_MAX, FLAGS
+    },
+    {
+        "audio_cache_ptr", "audio_cache_ptr",
+        OFFSET(audio_cache_ptr), AV_OPT_TYPE_INT64, {.i64 = 0}, INT64_MIN, INT64_MAX, FLAGS
+    },
+    {
+        "las_switch_mode", "las_switch_mode",
+        OFFSET(las_switch_mode), AV_OPT_TYPE_INT, {.i64 = LAS_AUTO_MODE}, INT_MIN, INT_MAX, FLAGS
+    },
+    {
+        "first_audio_packet_pts", "first_audio_packet_pts",
+        OFFSET(first_audio_packet_pts), AV_OPT_TYPE_INT64, {.i64 = 0}, INT64_MIN, INT64_MAX, FLAGS
+    },
+    {
+        "block_duration", "block_duration",
+        OFFSET(block_duration), AV_OPT_TYPE_INT, {.i64 = 0}, INT64_MIN, INT64_MAX, FLAGS
+    },
+    {
+        "audio_only_request", "audio_only_request",
+        OFFSET(audio_only_request), AV_OPT_TYPE_INT, {.i64 = 0}, INT64_MIN, INT64_MAX, FLAGS
+    },
+    {
+        "audio_only_response", "audio_only_response",
+        OFFSET(audio_only_response), AV_OPT_TYPE_INT, {.i64 = 0}, INT64_MIN, INT64_MAX, FLAGS
+    },
+    {
+        "stream_reopened", "stream_reopened",
+        OFFSET(stream_reopened), AV_OPT_TYPE_INT, {.i64 = 0}, INT64_MIN, INT64_MAX, FLAGS
+    },
     {NULL}
 };
 
-static const AVClass las_class = {
-    .class_name = "las",
+static const AVClass ijklas_class = {
+    .class_name = "las demuxer",
     .item_name  = av_default_item_name,
     .option     = las_options,
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-AVInputFormat ijkff_las_demuxer = {
-    .name           = "las",
+AVInputFormat ijkff_ijklas_demuxer = {
+    .name           = "ijklas",
     .long_name      = "Live Adaptive Streaming",
-    .priv_class     = &las_class,
+    .priv_class     = &ijklas_class,
     .priv_data_size = sizeof(LasContext),
     .read_probe     = las_probe,
     .read_header    = las_read_header,
diff --git a/ijkmedia/ijkplayer/ijkavformat/ijklas.h b/ijkmedia/ijkplayer/ijkavformat/ijklas.h
index 2515598073c007fc6a14a79a3a09eb25bf2c3911..7730a1b56d82f47e8d07ea2cd4345ec41ca16e58 100644
--- a/ijkmedia/ijkplayer/ijkavformat/ijklas.h
+++ b/ijkmedia/ijkplayer/ijkavformat/ijklas.h
@@ -7,7 +7,7 @@
 
 #define MAX_URL_SIZE 4096
 #define MAX_STREAM_NUM 10
-#define LAS_AUTO_MODE -1
+#define LAS_AUTO_MODE (-1)
 
 typedef struct FlvInfo {
     int total_bandwidth_kbps;
@@ -46,47 +46,4 @@ typedef struct LasStatistic {
     int64_t total_bytes_read;
 } LasStatistic;
 
-typedef struct LasPlayerStatistic {
-    pthread_mutex_t control_mutex;
-
-    int las_switch_mode;
-    int64_t first_audio_packet_pts;
-    int block_duration;
-    int audio_only_request;
-    int audio_only_response;
-    int64_t audio_cached_duration_ms;
-    int64_t video_cached_duration_ms;
-
-    LasStatistic las_stat;
-    bool stream_reopened;
-} LasPlayerStatistic;
-
-int las_stat_init(LasPlayerStatistic* stat);
-void las_stat_destroy(LasPlayerStatistic* stat);
-
-int las_get_switch_mode(LasPlayerStatistic* stat);
-void las_set_switch_mode(LasPlayerStatistic* stat, int switch_mode);
-
-int64_t las_get_first_audio_packet_pts(LasPlayerStatistic* stat);
-void las_set_first_audio_packet_pts(LasPlayerStatistic* stat, int64_t first_audio_packet_pts);
-
-int las_get_audio_only_request(LasPlayerStatistic* stat);
-void las_set_audio_only_request(LasPlayerStatistic* stat, int audio_only);
-
-int las_get_audio_only_response(LasPlayerStatistic* stat);
-void las_set_audio_only_response(LasPlayerStatistic* stat, int audio_only);
-
-int64_t las_get_audio_cached_duration_ms(LasPlayerStatistic* stat);
-void las_set_audio_cached_duration_ms(LasPlayerStatistic* stat, int64_t audio_cached_duration_ms);
-
-int64_t las_get_video_cached_duration_ms(LasPlayerStatistic* stat);
-void las_set_video_cached_duration_ms(LasPlayerStatistic* stat, int64_t video_cached_duration_ms);
-
-bool las_get_stream_reopened(LasPlayerStatistic* stat);
-void las_set_stream_reopened(LasPlayerStatistic* stat, bool stream_reopened);
-
-int32_t LasPlayerStatistic_get_downloading_bitrate(LasPlayerStatistic* stat);
-char* LasPlayerStatistic_get_downloading_url(LasPlayerStatistic* stat);
-int LasPlayerStatistic_get_http_reading_error(LasPlayerStatistic* stat);
-
 #endif
diff --git a/ios/IJKMediaDemo/IJKMediaDemo/IJKDemoSampleViewController.m b/ios/IJKMediaDemo/IJKMediaDemo/IJKDemoSampleViewController.m
index 240338da6093d716587d266a6fa9c0a223a033fb..4f0f72cfb353eefb00cb6d884a8b4742bcf802d4 100644
--- a/ios/IJKMediaDemo/IJKMediaDemo/IJKDemoSampleViewController.m
+++ b/ios/IJKMediaDemo/IJKMediaDemo/IJKDemoSampleViewController.m
@@ -37,7 +37,7 @@
     NSMutableArray *sampleList = [[NSMutableArray alloc] init];
 
     [sampleList addObject:@[@"las url",
-    @"{\"version\":\"1.0.0\",\"adaptationSet\":[{\"duration\":1000,\"id\":1,\"representation\":[{\"id\":1,\"codec\":\"avc1.64001e,mp4a.40.5\",\"url\":\"http://las-tech.org.cn/kwai/las-test_ld500d.flv\",\"backupUrl\":[],\"host\":\"las-tech.org.cn\",\"maxBitrate\":700,\"width\":640,\"height\":360,\"frameRate\":25,\"qualityType\":\"SMOOTH\",\"qualityTypeName\":\"流畅\",\"hidden\":false,\"disabledFromAdaptive\":false,\"defaultSelected\":false},{\"id\":2,\"codec\":\"avc1.64001f,mp4a.40.5\",\"url\":\"http://las-tech.org.cn/kwai/las-test_sd1000d.flv\",\"backupUrl\":[],\"host\":\"las-tech.org.cn\",\"maxBitrate\":1300,\"width\":960,\"height\":540,\"frameRate\":25,\"qualityType\":\"STANDARD\",\"qualityTypeName\":\"标清\",\"hidden\":false,\"disabledFromAdaptive\":false,\"defaultSelected\":false},{\"id\":3,\"codec\":\"avc1.64001f,mp4a.40.5\",\"url\":\"http://las-tech.org.cn/kwai/las-test.flv\",\"backupUrl\":[],\"host\":\"las-tech.org.cn\",\"maxBitrate\":2300,\"width\":1280,\"height\":720,\"frameRate\":30,\"qualityType\":\"HIGH\",\"qualityTypeName\":\"高清\",\"hidden\":false,\"disabledFromAdaptive\":false,\"defaultSelected\":true}]}]}"]]; 
+    @"{\"version\":\"1.0.0\",\"adaptationSet\":[{\"duration\":1000,\"id\":1,\"representation\":[{\"id\":1,\"codec\":\"avc1.64001e,mp4a.40.5\",\"url\":\"http://las-tech.org.cn/kwai/las-test_ld500d.flv\",\"backupUrl\":[],\"host\":\"las-tech.org.cn\",\"maxBitrate\":700,\"width\":640,\"height\":360,\"frameRate\":25,\"qualityType\":\"SMOOTH\",\"qualityTypeName\":\"流畅\",\"hidden\":false,\"disabledFromAdaptive\":false,\"defaultSelected\":false},{\"id\":2,\"codec\":\"avc1.64001f,mp4a.40.5\",\"url\":\"http://las-tech.org.cn/kwai/las-test_sd1000d.flv\",\"backupUrl\":[],\"host\":\"las-tech.org.cn\",\"maxBitrate\":1300,\"width\":960,\"height\":540,\"frameRate\":25,\"qualityType\":\"STANDARD\",\"qualityTypeName\":\"标清\",\"hidden\":false,\"disabledFromAdaptive\":false,\"defaultSelected\":true},{\"id\":3,\"codec\":\"avc1.64001f,mp4a.40.5\",\"url\":\"http://las-tech.org.cn/kwai/las-test.flv\",\"backupUrl\":[],\"host\":\"las-tech.org.cn\",\"maxBitrate\":2300,\"width\":1280,\"height\":720,\"frameRate\":30,\"qualityType\":\"HIGH\",\"qualityTypeName\":\"高清\",\"hidden\":false,\"disabledFromAdaptive\":false,\"defaultSelected\":false}]}]}"]];
     [sampleList addObject:@[@"bipbop basic master playlist",
                             @"http://devimages.apple.com.edgekey.net/streaming/examples/bipbop_4x3/bipbop_4x3_variant.m3u8"]];
     [sampleList addObject:@[@"bipbop basic 400x300 @ 232 kbps",
diff --git a/ios/IJKMediaDemo/IJKMediaDemo/IJKMoviePlayerViewController.m b/ios/IJKMediaDemo/IJKMediaDemo/IJKMoviePlayerViewController.m
index 6859d63d891fb21c16b470049b2d4cecb3bfb2f9..5178c7470a3ce4b93a00a4d1b0e69685185e9363 100644
--- a/ios/IJKMediaDemo/IJKMediaDemo/IJKMoviePlayerViewController.m
+++ b/ios/IJKMediaDemo/IJKMediaDemo/IJKMoviePlayerViewController.m
@@ -39,11 +39,9 @@
 - (instancetype)initWithManifest: (NSString*)manifest_string {
     self = [self initWithNibName:@"IJKMoviePlayerViewController" bundle:nil];
     if (self) {
-        NSString *fake_url = @"http://fakeurl_for_manifest";
-        NSURL   *url  = [NSURL URLWithString:fake_url];
-        self.url = url;
+        self.url = [NSURL URLWithString:@"ijklas:"];
+        self.manifest = manifest_string;
     }
-    self.manifest = manifest_string;
     return self;
 }
 
@@ -87,8 +85,9 @@
     IJKFFOptions *options = [IJKFFOptions optionsByDefault];
 
     if (self.manifest != nil){
-        [options setFormatOptionValue:self.manifest          forKey:@"manifest_string"];
-        [options setPlayerOptionIntValue:1              forKey:@"is-manifest"];
+        [options setPlayerOptionValue:@"ijklas"         forKey:@"iformat"];
+        [options setPlayerOptionIntValue:0              forKey:@"find_stream_info"];
+        [options setFormatOptionValue:self.manifest     forKey:@"manifest_string"];
     }
     self.player = [[IJKFFMoviePlayerController alloc] initWithContentURL:self.url withOptions:options];
     self.player.view.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;