我的 PlayReady PSSH-Box 如下(base64 和十六进制格式)。
"playready": {
"pssh-base64": "AAAD4nBzc2gAAAAAmgTweZhAQoarkuZb4IhflQAAA8LCAwAAAQABALgDPABXAFIATQBIAEUAQQBEAEUAUgAgAHgAbQBsAG4AcwA9ACIAaAB0AHQAcAA6AC8ALwBzAGMAaABlAG0AYQBzAC4AbQBpAGMAcgBvAHMAbwBmAHQALgBjAG8AbQAvAEQAUgBNAC8AMgAwADAANwAvADAAMwAvAFAAbABhAHkAUgBlAGEAZAB5AEgAZQBhAGQAZQByACIAIAB2AGUAcgBzAGkAbwBuAD0AIgA0AC4AMAAuADAALgAwACIAPgA8AEQAQQBUAEEAPgA8AFAAUgBPAFQARQBDAFQASQBOAEYATwA+ADwASwBFAFkATABFAE4APgAxADYAPAAvAEsARQBZAEwARQBOAD4APABBAEwARwBJAEQAPgBBAEUAUwBDAFQAUgA8AC8AQQBMAEcASQBEAD4APAAvAFAAUgBPAFQARQBDAFQASQBOAEYATwA+ADwASwBJAEQAPgB2ADgAMgByAHMARwBsADUATgAwAE8AdQBLADgAcgBPAEgAQQBLAHgAcABRAD0APQA8AC8ASwBJAEQAPgA8AEwAQQBfAFUAUgBMAD4AaAB0AHQAcAA6AC8ALwBwAHIALQBrAGUAeQBvAHMALgBsAGkAYwBlAG4AcwBlAGsAZQB5AHMAZQByAHYAZQByAC4AYwBvAG0ALwBjAG8AcgBlAC8AcgBpAGcAaAB0AHMAbQBhAG4AYQBnAGUAcgAuAGEAcwBtAHgAPAAvAEwAQQBfAFUAUgBMAD4APABEAFMAXwBJAEQAPgBWAGwAUgA3AEkAZABzAEkASgBFAHUAUgBkADAANgBMAGEAcQBzADIAagB3AD0APQA8AC8ARABTAF8ASQBEAD4APABDAFUAUwBUAE8ATQBBAFQAVABSAEkAQgBVAFQARQBTACAAeABtAGwAbgBzAD0AIgAiAD4APABDAEkARAA+AHYAOAAyAHIAcwBHAGwANQBOADAATwB1AEsAOAByAE8ASABBAEsAeABwAFEAPQA9ADwALwBDAEkARAA+ADwARABSAE0AVABZAFAARQA+AHMAbQBvAG8AdABoADwALwBEAFIATQBUAFkAUABFAD4APAAvAEMAVQBTAFQATwBNAEEAVABUAFIASQBCAFUAVABFAFMAPgA8AEMASABFAEMASwBTAFUATQA+ADgARQBLAEQAcQBJAHgAUwAwAFEAWQA9ADwALwBDAEgARQBDAEsAUwBVAE0APgA8AC8ARABBAFQAQQA+ADwALwBXAFIATQBIAEUAQQBEAEUAUgA+AA==",
"pssh-hex": "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"
}
我在 list 中使用 mspr:pro 标记。 据我了解，使用 mspr:pro 时，您输入 PlayReady 对象而不是 PSSH-Box (对于在 list 中使用的 PSSH-BOX cenc:ppsh 标记)。
如何从 PSSH 构建 Playready 对象？
最佳答案
只需去掉 PSSH 框 header 即可。
PSSH 框语法:
aligned(8) class ProtectionSystemSpecificHeaderBox extends FullBox(‘pssh’, version, flags=0)
{
unsigned int(8)[16] SystemID;
if (version > 0)
{
unsigned int(32) KID_count;
{
unsigned int(8)[16] KID;
} [KID_count]
}
unsigned int(32) DataSize; unsigned
int(8)[DataSize] Data;
}
示例中的 PSSH 十六进制:
// PSSH, big endian
00 00 03 E2 70 73 73 68 // box header, 994 bytes "pssh"
00 00 00 00 // full box header, version 0, flags 0
9A 04 F0 79 98 40 42 86 AB 92 E6 5B E0 88 5F 95 // PlayReady system ID
00 00 03 C2 // data size, 962 bytes
// PlayReady Object, little-endian
C2 03 00 00 // object length, 962 bytes
01 00 // record count, 1
01 00 // record type, 1 - PRH
B8 03 // record length, 952 bytes
3C 00 57 00 52 [...] // record value, "<WRMHEADER xmlns=..."
您还可以使用以下方式在线解码:https://tools.axinom.com/decoders/PsshBox
引用:
- ISO/IEC 23001-7
- PlayReady Header Specification
关于http-live-streaming - 如何从 pssh 构建 PlayReady 对象，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/69458197/