diff --git a/.vscode/settings.json b/.vscode/settings.json
index ea68455..9cd63fe 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -11,6 +11,7 @@
         "amix",
         "antiquewhite",
         "apad",
+        "asplit",
         "atrim",
         "blanchedalmond",
         "blueviolet",
diff --git a/src/converter/content.py b/src/converter/content.py
index 43263a8..03d31d0 100644
--- a/src/converter/content.py
+++ b/src/converter/content.py
@@ -17,7 +17,7 @@
     time_space_start_filter,
     width_height_filter,
 )
-from .utils import get_background_process, get_graphical_process
+from .utils import get_background_process, get_source_process
 
 
 def get_process_by_source(
@@ -27,14 +27,14 @@ def get_process_by_source(
     audio_process = None
     match type:
         case SourceType.IMAGE:
-            source = get_graphical_process(src_path, False, loop=1)
+            source = get_source_process(src_path, True, False, loop=1)
             video_process = source["video"].filter("setsar", "1/1")
         case SourceType.VIDEO:
-            source = get_graphical_process(src_path, exist_audio)
+            source = get_source_process(src_path, True, exist_audio)
             video_process = source["video"]
             audio_process = source["audio"]
         case SourceType.AUDIO:
-            audio_process = ffmpeg.input(src_path).audio
+            audio_process = get_source_process(src_path, False, True)["audio"]
         case SourceType.TEXT:
             (
                 width_with_padding,
diff --git a/src/converter/utils.py b/src/converter/utils.py
index cb91eb0..66a3e72 100644
--- a/src/converter/utils.py
+++ b/src/converter/utils.py
@@ -10,7 +10,7 @@
 
 def get_background_process(
     resolution_text: str, background_color: Optional[Color] = None
-):
+) -> Any:
     global origin_background_process
     key = "{}/{}".format(
         resolution_text,
@@ -40,21 +40,32 @@ def get_background_process(
     return background_processes[0]
 
 
-def get_graphical_process(src_path: str, exist_audio: bool, **option):
+def get_source_process(
+    src_path: str, exist_video: bool, exist_audio: bool, **option
+) -> dict[str, Any]:
     global origin_graphic_processes
     origin_graphic_process = origin_graphic_processes.get(src_path)
     if origin_graphic_process is None:
         process = ffmpeg.input(src_path, **option)
         origin_graphic_process = {
-            "video": process.video,
+            "video": process.video if exist_video else None,
             "audio": process.audio if exist_audio else None,
         }
-    video_graphic_processes = origin_graphic_process["video"].split()
+    video_graphic_processes = (
+        origin_graphic_process["video"].split()
+        if origin_graphic_process["video"] is not None
+        else (None, None)
+    )
+    audio_graphic_processes = (
+        origin_graphic_process["audio"].asplit()
+        if origin_graphic_process["audio"] is not None
+        else (None, None)
+    )
     origin_graphic_processes[src_path] = {
         "video": video_graphic_processes[1],
-        "audio": origin_graphic_process["audio"],
+        "audio": audio_graphic_processes[1],
     }
     return {
         "video": video_graphic_processes[0],
-        "audio": origin_graphic_process["audio"],
+        "audio": audio_graphic_processes[0],
     }