I am currently using ByteIOContext callback implementation
int(*  read_packet )(void *opaque, uint8_t *buf, int buf_size)
to read mpeg ts data from udp socket.
My problem is: I need to know if the frame I read is the key frame, or not...
E.g. I'd like to read AVPacket to check if flags == PKT_FLAG_KEY , not
just payload...
Is there any way I could use av_read_frame to read from socket vs. file?
Is there other way I could get AVPacket when reading from socket?
Thank you,
-V
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