新增hls测试

hls_test.py

@@ -0,0 +1,32 @@
+# 使用PyAV（FFmpeg的Python绑定）
+import av
+
+
+def extract_timestamps_from_ts(ts_file):
+    container = av.open(ts_file)
+    video_stream = container.streams.video[0]
+
+    frame_index = 0
+    for packet in container.demux(video_stream):
+        for frame in packet.decode():
+            # 获取精确时间信息
+            pts_ms = frame.pts * video_stream.time_base * 1000
+            dts_ms = frame.dts * video_stream.time_base * 1000 if frame.dts else None
+
+            print(f"帧 {frame_index}:")
+            print(f"  PTS: {pts_ms:.3f} ms")
+            print(f"  DTS: {dts_ms:.3f} ms" if dts_ms else "  DTS: None")
+            print(f"  类型: {frame.pict_type}")  # I, P, B
+            print(f"  关键帧: {frame.key_frame}")
+
+            frame_index += 1
+
+# 精度：可以达到微秒级
+
+def main():
+    # extract_timestamps_from_ts("D:\\ProjectDoc\\Police\\data\\hls\\segment_00000001.ts")
+    extract_timestamps_from_ts("raw_segments\\segment_00001619.ts")
+
+
+if __name__ == "__main__":
+    main()