diff --git a/Src/Lib/Downloader/HLS/downloader.py b/Src/Lib/Downloader/HLS/downloader.py
index 554c878..97b35d4 100644
--- a/Src/Lib/Downloader/HLS/downloader.py
+++ b/Src/Lib/Downloader/HLS/downloader.py
@@ -31,6 +31,7 @@ from Src.Util.os import (
 # Logic class
 from ...FFmpeg import (
     print_duration_table,
+    get_video_duration_s,
     join_video,
     join_audios,
     join_subtitle
@@ -137,7 +138,6 @@ class HLS_Downloader():
 
         # Send a GET request to the provided URL
         logging.info(f"Test url: {url}")
-        headers_index = {'user-agent': get_headers()}
         response = httpx.get(url, headers=headers_index)
 
         try:
@@ -485,6 +485,11 @@ class HLS_Downloader():
             end_output_seconds = dict_to_seconds(end_output_time)
             missing_ts = not (expected_real_seconds - 3 <= end_output_seconds <= expected_real_seconds + 3)
 
+            # Second check 
+            if not missing_ts:
+                if get_video_duration_s(self.output_filename) < int(expected_real_seconds) - 5:
+                    missing_ts = True
+
             panel_content = (
                 f"[bold green]Download completed![/bold green]\n"
                 f"[cyan]File size: [bold red]{formatted_size}[/bold red]\n"
@@ -499,10 +504,11 @@ class HLS_Downloader():
             ))
 
             # Delete all files except the output file
-            if not missing_ts:
-                delete_files_except_one(self.base_path, os.path.basename(self.output_filename))
-            else:
-                delete_files_except_one(self.base_path, os.path.basename(self.output_filename.replace(".mp4", "_failed.mp4")))
+            if missing_ts:
+                os.rename(self.output_filename, self.output_filename.replace(".mp4", "_failed.mp4"))
+
+            # Delete all other conversion
+            delete_files_except_one(self.base_path, os.path.basename(self.output_filename.replace(".mp4", "_failed.mp4")))
 
             # Remove the base folder
             if REMOVE_SEGMENTS_FOLDER:
diff --git a/Src/Lib/FFmpeg/__init__.py b/Src/Lib/FFmpeg/__init__.py
index 73ac6ba..463766c 100644
--- a/Src/Lib/FFmpeg/__init__.py
+++ b/Src/Lib/FFmpeg/__init__.py
@@ -1,8 +1,4 @@
 # 18.04.24
 
-from .command import (
-    join_video,
-    join_audios,
-    join_subtitle,
-)
-from .util import print_duration_table
+from .command import join_video, join_audios, join_subtitle
+from .util import print_duration_table, get_video_duration_s
diff --git a/Src/Lib/FFmpeg/capture.py b/Src/Lib/FFmpeg/capture.py
index 50727c8..074477c 100644
--- a/Src/Lib/FFmpeg/capture.py
+++ b/Src/Lib/FFmpeg/capture.py
@@ -1,13 +1,9 @@
 # 16.04.24
 
 import re
-import sys
 import logging
 import threading
 import subprocess
-from datetime import datetime
-
-from typing import Tuple
 
 
 # Internal utilities
diff --git a/Src/Lib/FFmpeg/command.py b/Src/Lib/FFmpeg/command.py
index b5a8078..221b0ff 100644
--- a/Src/Lib/FFmpeg/command.py
+++ b/Src/Lib/FFmpeg/command.py
@@ -12,7 +12,7 @@ from typing import List, Dict
 from Src.Util._jsonConfig import config_manager
 from Src.Util.os import check_file_existence, suppress_output
 from Src.Util.console import console
-from .util import need_to_force_to_ts, check_ffmpeg_input, check_duration_v_a
+from .util import need_to_force_to_ts, check_duration_v_a
 from .capture import capture_ffmpeg_real_time
 from ..M3U8 import M3U8_Codec
 
@@ -26,7 +26,6 @@ USE_ACODEC = config_manager.get_bool("M3U8_CONVERSION", "use_acodec")
 USE_BITRATE = config_manager.get_bool("M3U8_CONVERSION", "use_bitrate")
 USE_GPU = config_manager.get_bool("M3U8_CONVERSION", "use_gpu")
 FFMPEG_DEFAULT_PRESET = config_manager.get("M3U8_CONVERSION", "default_preset")
-CHECK_OUTPUT_CONVERSION = config_manager.get_bool("M3U8_CONVERSION", "check_output_after_ffmpeg")
 
 
 # Variable
@@ -116,12 +115,6 @@ def join_video(video_path: str, out_path: str, codec: M3U8_Codec = None):
                 capture_ffmpeg_real_time(ffmpeg_cmd, "[cyan]Join video")
                 print()
 
-    # Check file output
-    if CHECK_OUTPUT_CONVERSION:
-        console.log("[red]Check output ffmpeg")
-        time.sleep(0.5)
-        check_ffmpeg_input(out_path)
-
     time.sleep(0.5)
     if not check_file_existence(out_path):
         logging.error("Missing output video for ffmpeg conversion video.")
@@ -224,12 +217,6 @@ def join_audios(video_path: str, audio_tracks: List[Dict[str, str]], out_path: s
                 capture_ffmpeg_real_time(ffmpeg_cmd, "[cyan]Join audio")
                 print()
 
-    # Check file output
-    if CHECK_OUTPUT_CONVERSION:
-        console.log("[red]Check output ffmpeg")
-        time.sleep(0.5)
-        check_ffmpeg_input(out_path)
-
     time.sleep(0.5)
     if not check_file_existence(out_path):
         logging.error("Missing output video for ffmpeg conversion audio.")
@@ -295,13 +282,6 @@ def join_subtitle(video_path: str, subtitles_list: List[Dict[str, str]], out_pat
                 capture_ffmpeg_real_time(ffmpeg_cmd, "[cyan]Join subtitle")
                 print()
 
-        
-    # Check file output
-    if CHECK_OUTPUT_CONVERSION:
-        console.log("[red]Check output ffmpeg")
-        time.sleep(0.5)
-        check_ffmpeg_input(out_path)
-
     time.sleep(0.5)
     if not check_file_existence(out_path):
         logging.error("Missing output video for ffmpeg conversion subtitle.")
diff --git a/Src/Lib/FFmpeg/util.py b/Src/Lib/FFmpeg/util.py
index b2b3693..8c1c9d8 100644
--- a/Src/Lib/FFmpeg/util.py
+++ b/Src/Lib/FFmpeg/util.py
@@ -74,6 +74,36 @@ def get_video_duration(file_path: str) -> float:
         logging.error(f"Error get video duration: {e}")
         sys.exit(0)
 
+def get_video_duration_s(filename):
+    """
+    Get the duration of a video file using ffprobe.
+
+    Parameters:
+    - filename (str): Path to the video file (e.g., 'sim.mp4')
+
+    Returns:
+    - duration (float): Duration of the video in seconds, or None if an error occurs.
+    """
+    ffprobe_cmd = ['ffprobe', '-v', 'error', '-show_entries', 'format=duration', '-of', 'default=noprint_wrappers=1:nokey=1', filename]
+
+    try:
+        
+        # Run ffprobe command and capture output
+        result = subprocess.run(ffprobe_cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, check=True, text=True)
+        
+        # Extract duration from the output
+        duration_str = result.stdout.strip()
+        duration = float(duration_str)  # Convert duration to float
+        
+        return int(duration)
+    
+    except subprocess.CalledProcessError as e:
+        print(f"Error running ffprobe: {e}")
+        return None
+    except ValueError as e:
+        print(f"Error converting duration to float: {e}")
+        return None
+
 
 def format_duration(seconds: float) -> Tuple[int, int, int]:
     """
@@ -104,16 +134,6 @@ def print_duration_table(file_path: str, description: str = "Duration", return_s
     Returns:
         - str: The formatted duration string if return_string is True.
         - dict: A dictionary with keys 'h', 'm', 's' representing hours, minutes, and seconds if return_string is False.
-
-    Example usage:
-    >>> print_duration_table("path/to/video.mp4")
-    [cyan]Duration for [white]([green]video.mp4[white]): [yellow]1[red]h [yellow]1[red]m [yellow]1[red]s
-
-    >>> print_duration_table("path/to/video.mp4", description=None)
-    '[yellow]1[red]h [yellow]1[red]m [yellow]1[red]s'
-
-    >>> print_duration_table("path/to/video.mp4", description=None, return_string=False)
-    {'h': 1, 'm': 1, 's': 1}
     """
 
     video_duration = get_video_duration(file_path)
@@ -197,45 +217,6 @@ def need_to_force_to_ts(file_path):
     return False
 
 
-def check_ffmpeg_input(input_file):
-    """
-    Check if an input file can be processed by FFmpeg.
-
-    Args:
-        input_file (str): Path to the input file.
-    
-    Returns:
-        bool: True if the input file is valid and can be processed by FFmpeg, False otherwise.
-    """
-    command = [
-        'ffmpeg', '-v', 'error', '-i', input_file, '-f', 'null', '-'
-    ]
-    logging.info(f"FFmpeg command check: {command}")
-
-    try:
-        # Run the FFmpeg command and capture output
-        result = subprocess.run(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-        
-        # Check the exit status
-        if result.returncode != 0:
-            logging.error("FFmpeg encountered an error with the input file:")
-            logging.error(result.stderr.decode('utf-8'))
-            return False
-        
-        # Optionally, you can analyze the output to check for specific errors
-        stderr_output = result.stderr.decode('utf-8')
-        if 'error' in stderr_output.lower():
-            logging.error("FFmpeg reported an error in the input file:")
-            logging.error(stderr_output)
-            return False
-
-        logging.info(f"Input file is valid: {input_file}")
-        return True
-
-    except Exception as e:
-        logging.error(f"An unexpected error occurred: {e}")
-        return False
-
 def check_duration_v_a(video_path, audio_path):
     """
     Check if the duration of the video and audio matches.
diff --git a/Src/Lib/M3U8/estimator.py b/Src/Lib/M3U8/estimator.py
index 808c52b..7a306b6 100644
--- a/Src/Lib/M3U8/estimator.py
+++ b/Src/Lib/M3U8/estimator.py
@@ -56,7 +56,7 @@ class M3U8_Ts_Estimator:
         self.ts_file_sizes.append(size)
         self.now_downloaded_size += size_download
 
-    def capture_speed(self, interval: float = 0.8):
+    def capture_speed(self, interval: float = 1):
         """
         Capture the internet speed periodically and store the values in a deque.
         """
diff --git a/Test/t_down_hls.py b/Test/t_down_hls.py
index eedeef5..1e04f5b 100644
--- a/Test/t_down_hls.py
+++ b/Test/t_down_hls.py
@@ -1,9 +1,20 @@
 # 23.06.24
 
+# Fix import
+import time
+import sys
+import os
+src_path = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
+sys.path.append(src_path)
+
+
+
+# Import
 from Src.Lib.Downloader import HLS_Downloader
 
 
+# Test
 HLS_Downloader(
-    output_filename="EP_1.mp4",
+    output_filename=r".\EP_1.mp4",
     m3u8_playlist=""
-)
\ No newline at end of file
+).start()
\ No newline at end of file
diff --git a/Test/t_down_mp4.py b/Test/t_down_mp4.py
index d443dea..5dedaa0 100644
--- a/Test/t_down_mp4.py
+++ b/Test/t_down_mp4.py
@@ -1,7 +1,19 @@
 # 23.06.24
 
+# Fix import
+import time
+import sys
+import os
+src_path = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
+sys.path.append(src_path)
+
+
+
+# Import
 from Src.Lib.Downloader import MP4_downloader
 
+
+# Test
 MP4_downloader(
     "",
     "EP_1.mp4"
diff --git a/Test/t_down_tor.py b/Test/t_down_tor.py
index a7ef491..8fd26ab 100644
--- a/Test/t_down_tor.py
+++ b/Test/t_down_tor.py
@@ -1,7 +1,21 @@
 # 23.06.24
 
+
+# Fix import
+import time
+import sys
+import os
+src_path = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
+sys.path.append(src_path)
+
+
+
+# Import
 from Src.Lib.Downloader import TOR_downloader
 
+
+
+# Test
 manager = TOR_downloader()
 
 magnet_link = "magnet:?x"
diff --git a/config.json b/config.json
index d0fdcfd..8436a2d 100644
--- a/config.json
+++ b/config.json
@@ -49,8 +49,7 @@
         "use_acodec": true,
         "use_bitrate": true,
         "use_gpu": false,
-        "default_preset": "ultrafast",
-        "check_output_after_ffmpeg": false
+        "default_preset": "ultrafast"
     },
     "M3U8_PARSER": {
         "force_resolution": -1