New video clipping util

app/routers/hosted_file.py

@@ -1349,7 +1349,7 @@ async def create_video(
         # Run the ffmpeg command       
         args = shlex.split(cmd)
         try:
-            subprocess.run(args, check=True, capture_output=True, text=True)
+            result = subprocess.run(args, check=True, capture_output=True, text=True)
             log.debug(result.stdout)
         except subprocess.CalledProcessError as e:
             log.exception('Error running ffmpeg command')
@@ -1357,3 +1357,67 @@ async def create_video(
 
     # Return the new mp4 file for download
     return FileResponse(video_name, media_type='video/mp4', filename=f'{title_part_1}_{subtitle_part_1}.mp4')
+
+
+
+@router.post('/clip_video')
+async def clip_video(
+    video_file: UploadFile = File(...),
+    start_time: str = Form(...),
+    end_time: str = Form(...),
+    reencode: bool = False,
+):
+    log.setLevel(logging.DEBUG)
+    log.debug(locals())
+
+    video_file_name = video_file.filename
+    log.debug(video_file_name)
+
+    (video_file_orig_filename, video_file_orig_extension) = os.path.splitext(video_file_name)
+
+    # Save the uploaded audio file to a temporary directory
+    with tempfile.NamedTemporaryFile(delete=False, suffix='.mp4') as tmp_video_file:
+        tmp_video_file.write(await video_file.read())
+        tmp_video_file_orig_path = tmp_video_file.name
+
+    # cmd = f"ls -lha /tmp"
+    # args = shlex.split(cmd)
+    # try:
+    #     result = subprocess.run(args, check=True, capture_output=True, text=True)
+    #     log.debug(result.stdout)
+    # except subprocess.CalledProcessError as e:
+    #     log.exception('Error running ls command')
+    #     return {'success': False, 'status_message': f'Error running ls command: {e}'}
+
+    # Run the ffmpeg command to clip a video file based on the start and end times given
+    log.info('Run the ffmpeg command to clip a video file based on the start and end times given')
+    
+    with tempfile.NamedTemporaryFile(delete=False, suffix='.mp4') as tmp_video_file_clip:
+        tmp_video_file_clip_path = tmp_video_file_clip.name
+
+        # NOTE: It seems very important that the -y argument is used with ffmpeg run by subprocess.run(). Otherwise the process will hang.
+        # NOTE: This is a blocking process. It will take a while to complete.
+        if reencode:
+            new_video_file_clip_filename = f'{video_file_orig_filename}_[clip_reencode]{video_file_orig_extension}'
+            log.debug(new_video_file_clip_filename)
+
+            cmd = f"ffmpeg -hide_banner -loglevel error -nostats -y -i {tmp_video_file_orig_path} -ss {start_time} -to {end_time} -c:v libx264 -crf 23 -maxrate 2M -bufsize 2M -c:a copy -movflags +faststart {tmp_video_file_clip_path}"
+        else:
+            new_video_file_clip_filename = f'{video_file_orig_filename}_[clip]{video_file_orig_extension}'
+            log.debug(new_video_file_clip_filename)
+
+            cmd = f"ffmpeg -hide_banner -loglevel error -nostats -y -i {tmp_video_file_orig_path} -ss {start_time} -to {end_time} -c:v copy -c:a copy -movflags +faststart {tmp_video_file_clip_path}"
+
+        log.debug(cmd)
+
+        # Run the ffmpeg command       
+        args = shlex.split(cmd)
+        try:
+            result = subprocess.run(args, check=True, capture_output=True, text=True)
+            log.debug(result.stdout)
+        except subprocess.CalledProcessError as e:
+            log.exception('Error running ffmpeg command')
+            return {'success': False, 'status_message': f'Error running ffmpeg command: {e}'}
+
+    # Return the new mp4 file for download
+    return FileResponse(tmp_video_file_clip_path, media_type='video/mp4', filename=f'{new_video_file_clip_filename}')