feat(pipeline): frame stage ffmpeg arg builder (content pipeline §3.2)

2026-06-24 07:53:28 -07:00
parent 750e87eb0b
commit 642451925f
3 changed files with 52 additions and 0 deletions
@@ -0,0 +1,17 @@
+from tools.pipeline.ffmpeg_ops import frame_args
+
+
+def test_frame_args_trims_scales_pads_and_strips_audio():
+    args = frame_args(
+        "src.mp4", "out.mp4",
+        start=2.0, duration=8.0, width=1920, height=1080, ff="ffmpeg",
+    )
+    assert args[0] == "ffmpeg"
+    assert "-ss" in args and args[args.index("-ss") + 1] == "2.0"
+    assert "-t" in args and args[args.index("-t") + 1] == "8.0"
+    assert "-an" in args                      # audio stripped (bases are video-only)
+    vf = args[args.index("-vf") + 1]
+    assert "scale=1920:1080:force_original_aspect_ratio=decrease" in vf
+    assert "pad=1920:1080" in vf
+    assert "format=yuv420p" in vf
+    assert args[-1] == "out.mp4"