- * If AVPacket.buf is set on the returned packet, then the packet is
- * allocated dynamically and the user may keep it indefinitely.
- * Otherwise, if AVPacket.buf is NULL, the packet data is backed by a
- * static storage somewhere inside the demuxer and the packet is only valid
- * until the next av_read_frame() call or closing the file. If the caller
- * requires a longer lifetime, av_dup_packet() will make an av_malloc()ed copy
- * of it.
- * In both cases, the packet must be freed with av_packet_unref() when it is no
+ * A packet returned by av_read_frame() is always reference-counted,
+ * i.e. AVPacket.buf is set and the user may keep it indefinitely.
+ * The packet must be freed with av_packet_unref() when it is no