Though not explicitly stated by the AVFrame and AVPacket doc, these types make use of the AVBuffer API and should thus be thread-safe:
Note: Referencing and unreferencing the buffers is thread-safe and thus may be done from multiple threads simultaneously without any need for additional locking.
Two different references to the same buffer can point to different parts of the buffer (i.e. their AVBufferRef.data will not be equal).
It should be safe to implement Send and Sync for Frame and Packet.
Though not explicitly stated by the
AVFrameandAVPacketdoc, these types make use of theAVBufferAPI and should thus be thread-safe:It should be safe to implement
SendandSyncforFrameandPacket.