[FFmpeg-trac] #5176(avcodec:new): avcodec_decode_video2 requiring input buffer to be larger than actual read bytes

[FFmpeg]

#5176: avcodec_decode_video2 requiring input buffer to be larger than actual read
bytes
-------------------------------------+-------------------------------------
             Reporter:  hbos         |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  normal       |                Component:  avcodec
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
  avcodec_decode_video2              |  Reproduced by developer:  0
  AV_INPUT_BUFFER_PADDING_SIZE       |
  input buffer bitstream reader 32   |
  64 bits overread                   |
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by heleppkes):

 Of course this is a performance issue, if we wouldn't have padding we
 would have to check every time if we're at the end of the buffer, which is
 exactly what the required padding is designed to avoid.

 Don't expect any changes, this is a clear design decision.

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Ticket URL: <https://trac.ffmpeg.org/ticket/5176#comment:1>
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