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some codecs need / can use extra-data like huffman tables. mjpeg: huffman tables rv10: additional flags mpeg4: global headers (they can be in the bitstream or here) the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger then extradata_size to avoid prolems if its read with the bitstream reader the bytewise contents of extradata must not depend on the architecture or cpu endianness

  • encoding: set/allocated/freed by lavc.
  • decoding: set/allocated/freed by user.

Definition at line 609 of file avcodec.h.

Referenced by av_parser_change(), cook_decode_init(), qdm2_decode_init(), and vc9_decode_init().


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