refine ffprobe methods and adopt tests from v4

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Tbcd6VWCiU4BQP1gywPr2a

tests/test_ffprobe_builder.py

@@ -0,0 +1,41 @@
+from shutil import which
+
+from facefusion import ffprobe_builder
+from facefusion.ffprobe_builder import chain, format_to_key_value, run, select_stream, set_input, show_format_entries, show_stream_entries
+
+
+def test_run() -> None:
+	assert run([ '-v', 'error' ]) == [ which('ffprobe'), '-loglevel', 'error', '-v', 'error' ]
+
+
+def test_chain() -> None:
+	assert chain(
+		ffprobe_builder.select_stream('v:0'),
+		ffprobe_builder.show_stream_entries([ 'duration' ]),
+		ffprobe_builder.format_to_key_value(),
+		ffprobe_builder.set_input('target.mp4')
+	) == [ '-select_streams', 'v:0', '-show_entries', 'stream=duration', '-of', 'default=noprint_wrappers=1', '-i', 'target.mp4' ]
+
+
+def test_select_stream() -> None:
+	assert select_stream('v:0') == [ '-select_streams', 'v:0' ]
+	assert select_stream('a:0') == [ '-select_streams', 'a:0' ]
+
+
+def test_show_stream_entries() -> None:
+	assert show_stream_entries([ 'duration' ]) == [ '-show_entries', 'stream=duration' ]
+	assert show_stream_entries([ 'duration', 'width' ]) == [ '-show_entries', 'stream=duration,width' ]
+
+
+def test_show_format_entries() -> None:
+	assert show_format_entries([ 'duration' ]) == [ '-show_entries', 'format=duration' ]
+	assert show_format_entries([ 'duration', 'bit_rate' ]) == [ '-show_entries', 'format=duration,bit_rate' ]
+
+
+def test_format_to_key_value() -> None:
+	assert format_to_key_value() == [ '-of', 'default=noprint_wrappers=1' ]
+
+
+def test_set_input() -> None:
+	assert set_input('input.mp3') == [ '-i', 'input.mp3' ]
+	assert set_input('input.wav') == [ '-i', 'input.wav' ]