Initial commit

utilities/ffmpeg_presets.py

@@ -0,0 +1,32 @@
+import ffmpeg
+
+
+def file_info(path):
+    try:
+        return ffmpeg.probe(path)
+    except Exception as e:
+        print('Error getting ffmpeg info: ' + str(e))
+    return None
+
+
+def generate_fast_preview(source_path, dest_path, max_width=1280, run_async=False):
+    stream = ffmpeg.input(source_path)
+    stream = ffmpeg.output(stream, dest_path, **{'vf': 'format=yuv420p,scale={width}:-2'.format(width=max_width), 'preset': 'ultrafast'})
+    return _run_output(stream, run_async)
+
+
+def generate_prores_trim(source_path, dest_path, start_frame, end_frame, handles=10, run_async=False):
+    stream = ffmpeg.input(source_path)
+    stream = stream.trim(**{'start_frame': max(start_frame-handles, 0), 'end_frame': end_frame + handles})
+    stream = stream.setpts('PTS-STARTPTS')  # reset timecode
+    stream = ffmpeg.output(stream, dest_path, strict='-2', **{'c:v': 'prores_ks', 'profile:v': 4})
+    return _run_output(stream, run_async)
+
+
+def _run_output(stream, run_async):
+    return ffmpeg.run_async(stream) if run_async else ffmpeg.run(stream)
+
+
+if __name__ == '__main__':
+    x = file_info("/Users/brettwilliams/Desktop/dark_knight_rises.mp4")
+    print(x)