diff --git a/biz/ffmpeg.py b/biz/ffmpeg.py
index ffebb4f..e46e5ad 100644
--- a/biz/ffmpeg.py
+++ b/biz/ffmpeg.py
@@ -1,9 +1,11 @@
+import json
 import os.path
+import time
 
 from entity.ffmpeg import FfmpegTask
 import logging
 
-from util import ffmpeg
+from util import ffmpeg, oss
 
 logger = logging.getLogger('biz/ffmpeg')
 
@@ -11,8 +13,10 @@ logger = logging.getLogger('biz/ffmpeg')
 def parse_ffmpeg_task(task_info, template_info):
     tasks = []
     # 中间片段
+    task_params_str = task_info.get("taskParams", "{}")
+    task_params = json.loads(task_params_str)
     for part in template_info.get("video_parts"):
-        source = select_video_if_needed(part.get('source'), task_info, template_info)
+        source = parse_video(part.get('source'), task_params, template_info)
         if not source:
             logger.warning("no video found for part: " + str(part))
             continue
@@ -37,17 +41,22 @@ def parse_ffmpeg_task(task_info, template_info):
     return task
 
 
-def select_video_if_needed(source, task_info, template_info):
+def parse_video(source, task_params, template_info):
+    print(source)
     if source.startswith('PLACEHOLDER_'):
         placeholder_id = source.replace('PLACEHOLDER_', '')
-        new_sources = task_info.get('user_videos', {}).get(placeholder_id, [])
+        new_sources = task_params.get(placeholder_id, [])
         if type(new_sources) is list:
             if len(new_sources) == 0:
                 logger.debug("no video found for placeholder: " + placeholder_id)
                 return None
             else:
                 # TODO: Random Pick / Policy Pick
-                new_sources = new_sources[0]
+                new_sources = new_sources[0].get("url")
+        if new_sources.startswith("http"):
+            _, source_name = os.path.split(new_sources)
+            oss.download_from_oss(new_sources, source)
+            return source_name
         return new_sources
     return os.path.join(template_info.get("local_path"), source)
 
diff --git a/biz/task.py b/biz/task.py
index ebea240..8f20f08 100644
--- a/biz/task.py
+++ b/biz/task.py
@@ -9,7 +9,6 @@ def normalize_task(task_info):
 def start_task(task_info):
     from biz.ffmpeg import parse_ffmpeg_task, start_ffmpeg_task
     task_info = normalize_task(task_info)
-    task_template = "test_template"
-    template_info = get_template_def(task_template)
+    template_info = get_template_def(task_info.get("templateId"))
     ffmpeg_task = parse_ffmpeg_task(task_info, template_info)
     result = start_ffmpeg_task(ffmpeg_task)
\ No newline at end of file
diff --git a/entity/ffmpeg.py b/entity/ffmpeg.py
index b8f6f91..cf7cf8c 100644
--- a/entity/ffmpeg.py
+++ b/entity/ffmpeg.py
@@ -1,3 +1,5 @@
+import uuid
+
 
 class FfmpegTask(object):
 
@@ -123,7 +125,7 @@ class FfmpegTask(object):
         if self.task_type == 'encode':
             input_args = []
             filter_args = []
-            output_args = []
+            output_args = ["-shortest", "-c:v h264_qsv"]
             video_output_str = "[0:v]"
             audio_output_str = "[0:v]"
             video_input_count = 0
@@ -170,8 +172,8 @@ class FfmpegTask(object):
                 output_args.append(audio_output_str)
             return args + input_args + ["-filter_complex", ";".join(filter_args)] + output_args + [self.get_output_file()]
         elif self.task_type == 'concat':
-            input_args = ["-hwaccel qsv"]
-            output_args = []
+            input_args = []
+            output_args = ["-shortest", "-c:v", "h264_qsv", "-r", "25"]
             filter_args = []
             video_output_str = "[0:v]"
             audio_output_str = "[0:v]"
@@ -215,7 +217,6 @@ class FfmpegTask(object):
     def set_output_file(self, file=None):
         if file is None:
             if self.output_file == '':
-                # TODO: Random Filename
-                self.output_file = "rand.mp4"
+                self.output_file = "rand_" + str(uuid.uuid4()) + ".mp4"
         else:
             self.output_file = file
\ No newline at end of file