[FFmpeg-trac] #9351(undetermined:open): bug in several windows builds when reencoding h.264 to h.265 with GPU

[FFmpeg]

#9351: bug in several windows builds when reencoding h.264 to h.265 with GPU
-------------------------------------+-------------------------------------
             Reporter:  John Dury    |                    Owner:  Timo R.
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:  ffmpeg gpu   |               Blocked By:
  buffer                             |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by Timo R.):

 The "Failed locking bitstream buffer: not enough buffer" thing seems to be
 another fallout of a bug in the Nvidia-Driver regarding SEI data.
 Passing additional SEI data seemingly causes random memory corruption and
 can cause all kinds of explosions when the input has any additional SEI
 data (a53 subs, s12m timestamps, other user sei data, ...).

 Nvidia has acknowledged that bug and fixed it in Driver 495.
 There is no way for nvenc/CUDA to check the driver version, so there is no
 sane way to conditionally disable that feature on older drivers.

 I added the "-extra_sei" option for that purpose. Setting it to 0 will
 prevent it from writing any extra SEI data, avoding the issue.
 On 4.4 you will have to manually turn off s12m_tc and a53cc, since the
 option to turn all of it off does not exist there.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9351#comment:30>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker