Ben, oui, c'est très étrange
Dans le code, je lis ça, qui semble lié:
/*!\brief The maximum number of work buffers used by libvpx.
* Support maximum 4 threads to decode video in parallel.
* Each thread will use one work buffer.
* TODO(hkuang): Add support to set number of worker threads dynamically.
*/
#define VPX_MAXIMUM_WORK_BUFFERS 8
M'enfin