LTX uses a default frame rate of 24 FPS

We need to modify the output validation framerate to match that value.
Add Framerate args.
Add Update video output and inference frame rate

finetrainers/args.py

@@ -892,6 +892,12 @@ def _add_validation_arguments(parser: argparse.ArgumentParser) -> None:
         default=None,
         help="Run validation every X training steps. Validation consists of running the validation prompt `args.num_validation_videos` times.",
     )
+    parser.add_argument(
+        "--validation_frame_rate",
+        type=int,
+        default=None,
+        help="Run inference validation at a specified frame rate every X training steps with the same output frame rate. `args.validation_frame_rate`",
+    )
     parser.add_argument(
         "--enable_model_cpu_offload",
         action="store_true",