feat: improve ffmpeg audio handling, adjust dependencies

- Add conditional check for valid audio files in ffmpeg command.
- Update opencv-python and numpy versions in requirements.
- Remove redundant dependency update section from README.

Author: artryazanov

README.md

@@ -122,10 +122,6 @@ pip install ruff
 ruff check .
 ```
 
-### Dependency Updates
-
-Dependabot is configured to check for updates weekly (pip) and monthly (actions).
-
 ## Running Tests
 
 Unit tests live in the `tests/` folder. Run them with:

requirements.txt

@@ -1,7 +1,7 @@
 cupy-cuda12x>=13.0.0
 moviepy==2.2.1
-numpy<3.0.0
-opencv-python==4.12.0.88
+numpy<2.0.0
+opencv-python==4.9.0.80
 pytest==9.0.2
 python-dotenv==1.2.1
 random2==1.0.2

shorts.py

@@ -1019,7 +1019,14 @@ def render_video_gpu(
         "-pix_fmt", "rgb24",
         "-r", f"{fps}",
         "-i", "-",
-        "-i", str(temp_audio),
+    ]
+
+    has_valid_audio = temp_audio.exists() and temp_audio.stat().st_size > 0
+
+    if has_valid_audio:
+        cmd_ffmpeg.extend(["-i", str(temp_audio)])
+
+    cmd_ffmpeg.extend([
         "-c:v", "hevc_nvenc",  # Use hardware encoder
         "-preset", "p7",
         "-tune", "hq",
@@ -1030,14 +1037,12 @@ def render_video_gpu(
         "-pix_fmt", "yuv420p",
         "-g", f"{int(fps * 2)}",
         "-bf", "2",
-        "-c:a", "aac",
-        "-b:a", "192k",
-        "-shortest",
-        str(output_path)
-    ]
+    ])
+
+    if has_valid_audio:
+        cmd_ffmpeg.extend(["-c:a", "aac", "-b:a", "192k"])
 
-    if not temp_audio.exists():
-        cmd_ffmpeg = [x for x in cmd_ffmpeg if x not in ["-i", str(temp_audio), "-c:a", "aac"]]
+    cmd_ffmpeg.extend(["-shortest", str(output_path)])
 
     # redirect stderr to a file to prevent buffer deadlock
     log_path = output_path.with_suffix(".ffmpeg.log")