upload_max_filesize = 500M

post_max_size  = 500M

max_execution_time = 600

max_input_time = 600

memory_limit = 128M

这些参数都改了，上传300多M的视频文件报下面错误，哪位大神知道怎么解决？

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at admin@php.cn to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.