Pierre Lamot authored May 31, 2022 and Jean-Baptiste Kempf committed Jun 04, 2022

If the va module succeed to open but is identified as unusable before the end of
FFmpeg getFormat callback, the module may have to do some cleanups in the
AVCodecContext.

the close callback will be called with a NULL AVCodecContext outside the
getFormat callback as the AVCodecContext ownership is transferred to FFmpeg