中公网校的视频课程 好像是百度vod , 怎么取到 16Bytes文件呢 ?

[sfss5362]

怎么取到 16Bytes文件呢 ?

#req
https://drm.media.baidubce.com/v1/encryptedVideoKey?videoKeyId=mda-jm0d8gjcdyz9y5u0&playerId=pid-1-5-1
#resp
{
"videoKeyId": "mda-jm0d8gjcdyz9y5u0",
"playerId": "pid-1-5-1",
"encryptedVideoKey": "20ed6888e8f4c5b529758e30903f3f5b"
}

encryptedVideoKey 怎么得到 16Bytes文件呢 ?

#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:15
#EXT-X-DISCONTINUITY
#EXT-X-KEY:METHOD=AES-128,URI="https://drm.media.baidubce.com/v1/encryptedVideoKey?videoKeyId=mda-jm0d8gjcdyz9y5u0",IV=0x08bf447771bb84c4f36d46312570886e,KEYFORMAT=media-drm-player-binding
#EXTINF:10.000000,
http://gcik47gyt746q6nqdze.exp.bcevod.com/mda-jm0d8gjcdyz9y5u0/mda-jm0d8gjcdyz9y5u0.m3u8.0.ts
#EXT-X-KEY:METHOD=AES-128,URI="https://drm.media.baidubce.com/v1/encryptedVideoKey?videoKeyId=mda-jm0d8gjcdyz9y5u0",IV=0x08bf447771bb84c4f36d46312570886e,KEYFORMAT=media-drm-player-binding
#EXTINF:10.000000,
http://gcik47gyt746q6nqdze.exp.bcevod.com/mda-jm0d8gjcdyz9y5u0/mda-jm0d8gjcdyz9y5u0.m3u8.1.ts
#EXT-X-KEY:METHOD=AES-128,URI="https://drm.media.baidubce.com/v1/encryptedVideoKey?videoKeyId=mda-jm0d8gjcdyz9y5u0",IV=0x08bf447771bb84c4f36d46312570886e,KEYFORMAT=media-drm-player-binding
#EXTINF:10.000000,
http://gcik47gyt746q6nqdze.exp.bcevod.com/mda-jm0d8gjcdyz9y5u0/mda-jm0d8gjcdyz9y5u0.m3u8.2.ts
#EXT-X-KEY:METHOD=AES-128,URI="https://drm.media.baidubce.com/v1/encryptedVideoKey?videoKeyId=mda-jm0d8gjcdyz9y5u0",IV=0x08bf447771bb84c4f36d46312570886e,KEYFORMAT=media-drm-player-binding
#EXTINF:10.000000,

[nilaoda]

是否有免费的视频用于测试？