diff --git a/workflow/video.py b/workflow/video.py
index 02dae47..87c2fa1 100644
--- a/workflow/video.py
+++ b/workflow/video.py
@@ -32,58 +32,72 @@ def multi_gpu_encode_video_with_subtitles(orig_filename: str, subtitles: list[st
         return [new_filename]
     _duration_str = get_video_real_duration(orig_filename)
     duration = duration_str_to_float(_duration_str)
-    if duration > (VIDEO_CLIP_EACH_SEC * 3):
+    if duration > (VIDEO_CLIP_EACH_SEC * 5):
         # qsv 压制前2段，剩余交由nvenc压制
-        new_filename0 = base_ts_to_filename(base_ts)
-        new_filename1 = base_ts_to_filename(base_ts + VIDEO_CLIP_EACH_SEC * 2)
+        _slices = int(duration / VIDEO_CLIP_EACH_SEC)
+        new_filename0 = base_ts_to_filename(base_ts + (_slices - 1) * VIDEO_CLIP_EACH_SEC)
+        new_filename1 = base_ts_to_filename(base_ts)
+        print("[+]Use Intel QSV Acceleration")
         encode_process0 = subprocess.Popen([
             FFMPEG_EXEC, "-hide_banner", "-progress", "-", "-loglevel", "error", "-y",
-            "-hwaccel", "qsv", "-t", str(VIDEO_CLIP_EACH_SEC * 2 + (VIDEO_CLIP_OVERFLOW_SEC * 0.8)), "-i", orig_filename, "-vf",
+            "-hwaccel", "qsv", "-ss", str((_slices - 1) * VIDEO_CLIP_EACH_SEC),
+            "-copyts", "-i", orig_filename, "-vf",
             ",".join("subtitles=%s" % i for i in subtitles),
             "-c:a", "copy", "-c:v", "h264_qsv",
             "-f", "mp4", "-preset:v", "fast", "-profile:v", "high", "-level", "4.1",
             "-b:v", VIDEO_BITRATE, "-rc:v", "vbr", "-tune:v", "hq",
             "-qmin", "10", "-qmax", "32", "-crf", "16",
+            "-fflags", "+genpts", "-shortest", "-movflags", "faststart",
             # "-t", "10",
             new_filename0
         ])
+        print("[+]Use Nvidia NvEnc Acceleration")
         encode_process1 = subprocess.Popen([
             FFMPEG_EXEC, "-hide_banner", "-progress", "-", "-loglevel", "error", "-y",
-            "-ss", str(VIDEO_CLIP_EACH_SEC * 2), "-copyts", "-i", orig_filename, "-vf",
+            "-t", str((_slices - 1) * VIDEO_CLIP_EACH_SEC + (VIDEO_CLIP_OVERFLOW_SEC * 0.8)),
+            "-i", orig_filename, "-vf",
             ",".join("subtitles=%s" % i for i in subtitles),
             "-c:a", "copy", "-c:v", "h264_nvenc", "-ss", str(VIDEO_CLIP_EACH_SEC * 2),
             "-f", "mp4", "-preset:v", "fast", "-profile:v", "high", "-level", "4.1",
             "-b:v", VIDEO_BITRATE, "-rc:v", "vbr", "-tune:v", "hq",
             "-qmin", "10", "-qmax", "32", "-crf", "16",
+            "-fflags", "+genpts", "-shortest", "-movflags", "faststart",
             # "-t", "10",
             new_filename1
         ])
-        encode_process1.wait()
         encode_process0.wait()
+        encode_process1.wait()
         return [new_filename0, new_filename1]
-    elif duration > (VIDEO_CLIP_EACH_SEC * 1):
+    elif duration > (VIDEO_CLIP_EACH_SEC * 3):
         # 至少也要能切2片，才用双GPU加速
-        new_filename0 = base_ts_to_filename(base_ts, True)
-        new_filename1 = base_ts_to_filename(base_ts + VIDEO_CLIP_EACH_SEC)
+        _slices = int(duration / VIDEO_CLIP_EACH_SEC)
+        new_filename0 = base_ts_to_filename(base_ts + _slices * VIDEO_CLIP_EACH_SEC, True)
+        new_filename1 = base_ts_to_filename(base_ts)
+        print("[+]Use Intel QSV Acceleration")
         encode_process0 = subprocess.Popen([
             FFMPEG_EXEC, "-hide_banner", "-progress", "-", "-loglevel", "error", "-y",
-            "-hwaccel", "qsv", "-t", str(VIDEO_CLIP_EACH_SEC + (VIDEO_CLIP_OVERFLOW_SEC * 0.8)), "-i", orig_filename, "-vf",
+            "-hwaccel", "qsv", "-ss", str(_slices * VIDEO_CLIP_EACH_SEC),
+            "-copyts", "-i", orig_filename, "-vf",
             ",".join("subtitles=%s" % i for i in subtitles),
             "-c:a", "copy", "-c:v", "h264_qsv",
             "-f", "mp4", "-preset:v", "fast", "-profile:v", "high", "-level", "4.1",
             "-b:v", VIDEO_BITRATE, "-rc:v", "vbr", "-tune:v", "hq",
             "-qmin", "10", "-qmax", "32", "-crf", "16",
+            "-fflags", "+genpts", "-shortest", "-movflags", "faststart",
             # "-t", "10",
             new_filename0
         ])
+        print("[+]Use Nvidia NvEnc Acceleration")
         encode_process1 = subprocess.Popen([
             FFMPEG_EXEC, "-hide_banner", "-progress", "-", "-loglevel", "error", "-y",
-            "-ss", str(VIDEO_CLIP_EACH_SEC), "-copyts", "-i", orig_filename, "-vf",
+            "-t", str(_slices * VIDEO_CLIP_EACH_SEC + (VIDEO_CLIP_OVERFLOW_SEC * 0.8)),
+            "-i", orig_filename, "-vf",
             ",".join("subtitles=%s" % i for i in subtitles),
             "-c:a", "copy", "-c:v", "h264_nvenc", "-ss", str(VIDEO_CLIP_EACH_SEC),
             "-f", "mp4", "-preset:v", "fast", "-profile:v", "high", "-level", "4.1",
             "-b:v", VIDEO_BITRATE, "-rc:v", "vbr", "-tune:v", "hq",
             "-qmin", "10", "-qmax", "32", "-crf", "16",
+            "-fflags", "+genpts", "-shortest", "-movflags", "faststart",
             # "-t", "10",
             new_filename1
         ])
@@ -108,6 +122,7 @@ def encode_video_with_subtitles(orig_filename: str, subtitles: list[str], new_fi
             "-f", "mp4", "-preset:v", "fast", "-profile:v", "high", "-level", "4.1",
             "-b:v", VIDEO_BITRATE, "-rc:v", "vbr", "-tune:v", "hq",
             "-qmin", "10", "-qmax", "32", "-crf", "16",
+            "-fflags", "+genpts", "-shortest", "-movflags", "faststart",
             # "-t", "10",
             new_filename
         ], stdout=subprocess.PIPE)
@@ -122,6 +137,7 @@ def encode_video_with_subtitles(orig_filename: str, subtitles: list[str], new_fi
                 "-f", "mp4", "-preset:v", "fast", "-profile:v", "high", "-level", "4.1",
                 "-b:v", VIDEO_BITRATE, "-rc:v", "vbr", "-tune:v", "hq",
                 "-qmin", "10", "-qmax", "32", "-crf", "16",
+                "-fflags", "+genpts", "-shortest", "-movflags", "faststart",
                 # "-t", "10",
                 new_filename
             ], stdout=subprocess.PIPE)
@@ -135,6 +151,7 @@ def encode_video_with_subtitles(orig_filename: str, subtitles: list[str], new_fi
                 "-f", "mp4", "-preset:v", "fast", "-profile:v", "high", "-level", "4.1",
                 "-b:v", VIDEO_BITRATE, "-rc:v", "vbr", "-tune:v", "hq",
                 "-qmin", "10", "-qmax", "32", "-crf", "16",
+                "-fflags", "+genpts", "-shortest", "-movflags", "faststart",
                 # "-t", "10",
                 new_filename
             ], stdout=subprocess.PIPE)
@@ -148,6 +165,7 @@ def encode_video_with_subtitles(orig_filename: str, subtitles: list[str], new_fi
             "-f", "mp4", "-preset:v", "fast", "-profile:v", "high", "-level", "4.1",
             "-b:v", VIDEO_BITRATE, "-rc:v", "vbr",
             "-qmin", "10", "-qmax", "32", "-crf", "16",
+            "-fflags", "+genpts", "-shortest", "-movflags", "faststart",
             # "-t", "10",
             new_filename
         ], stdout=subprocess.PIPE)
@@ -200,6 +218,7 @@ def quick_split_video(file):
             "-ss", str(current_sec),
             "-i", file_name, "-c", "copy", "-f", "mp4",
             "-t", str(VIDEO_CLIP_EACH_SEC + VIDEO_CLIP_OVERFLOW_SEC),
+            "-fflags", "+genpts", "-shortest", "-movflags", "faststart",
             "{}.mp4".format(current_dt)
         ], stdout=subprocess.PIPE)
         handle_ffmpeg_output(split_process.stdout)