@
no1xsyzy #68
另外,为了尊重你,我特地去了 HDHome 以关键词 “原盘”,搜了一下,大部分原盘文件大小入下图:
https://10.via0.com/ipfs/QmXixjZHCrdPyNTHCPc9SLf5w6iBn4QE3j27LChdghqw1y/Snipaste_2021-01-05_06-59-25.png可能有更大的我没有搜到,但是 30g 左右是一个比较普遍的大小。
我们以影片 Le colt cantarono la morte e fu tempo di massacro AKA Massacre Time 1966 1080p GER Blu-ray AVC DTS-HD MA 2.0-OLDHAM 为例,文件清单如下:
```
BDMV/BACKUP/CLIPINF/00000.clpi 0.54 KB
BDMV/BACKUP/CLIPINF/00001.clpi 1.41 KB
BDMV/BACKUP/CLIPINF/00002.clpi 39.39 KB
BDMV/BACKUP/CLIPINF/00003.clpi 0.29 KB
BDMV/BACKUP/CLIPINF/00004.clpi 1.59 KB
BDMV/BACKUP/CLIPINF/00005.clpi 3.88 KB
BDMV/BACKUP/CLIPINF/00006.clpi 7.58 KB
BDMV/BACKUP/CLIPINF/00007.clpi 1.13 KB
BDMV/BACKUP/CLIPINF/00008.clpi 6.20 KB
BDMV/BACKUP/CLIPINF/00009.clpi 1.29 KB
BDMV/BACKUP/MovieObject.bdmv 2.01 KB
BDMV/BACKUP/PLAYLIST/00000.mpls 0.18 KB
BDMV/BACKUP/PLAYLIST/00001.mpls 0.18 KB
BDMV/BACKUP/PLAYLIST/00002.mpls 0.45 KB
BDMV/BACKUP/PLAYLIST/00003.mpls 0.18 KB
BDMV/BACKUP/PLAYLIST/00004.mpls 0.21 KB
BDMV/BACKUP/PLAYLIST/00005.mpls 0.21 KB
BDMV/BACKUP/PLAYLIST/00006.mpls 0.18 KB
BDMV/BACKUP/PLAYLIST/00007.mpls 0.21 KB
BDMV/BACKUP/PLAYLIST/00008.mpls 1.18 KB
BDMV/BACKUP/index.bdmv 0.22 KB
BDMV/CLIPINF/00000.clpi 0.54 KB
BDMV/CLIPINF/00001.clpi 1.41 KB
BDMV/CLIPINF/00002.clpi 39.39 KB
BDMV/CLIPINF/00003.clpi 0.29 KB
BDMV/CLIPINF/00004.clpi 1.59 KB
BDMV/CLIPINF/00005.clpi 3.88 KB
BDMV/CLIPINF/00006.clpi 7.58 KB
BDMV/CLIPINF/00007.clpi 1.13 KB
BDMV/CLIPINF/00008.clpi 6.20 KB
BDMV/CLIPINF/00009.clpi 1.29 KB
BDMV/MovieObject.bdmv 2.01 KB
BDMV/PLAYLIST/00000.mpls 0.18 KB
BDMV/PLAYLIST/00001.mpls 0.18 KB
BDMV/PLAYLIST/00002.mpls 0.45 KB
BDMV/PLAYLIST/00003.mpls 0.18 KB
BDMV/PLAYLIST/00004.mpls 0.21 KB
BDMV/PLAYLIST/00005.mpls 0.21 KB
BDMV/PLAYLIST/00006.mpls 0.18 KB
BDMV/PLAYLIST/00007.mpls 0.21 KB
BDMV/PLAYLIST/00008.mpls 1.18 KB
BDMV/STREAM/00000.m2ts 11.32 MB
BDMV/STREAM/00001.m2ts 448.49 MB
BDMV/STREAM/00002.m2ts 26.95 GB
BDMV/STREAM/00003.m2ts 4.63 MB
BDMV/STREAM/00004.m2ts 638.00 MB
BDMV/STREAM/00005.m2ts 637.39 MB
BDMV/STREAM/00006.m2ts 2.65 GB
BDMV/STREAM/00007.m2ts 173.95 MB
BDMV/STREAM/00008.m2ts 809.35 MB
BDMV/STREAM/00009.m2ts 484.32 MB
BDMV/index.bdmv 0.22 KB
CERTIFICATE/BACKUP/id.bdmv 0.10 KB
CERTIFICATE/id.bdmv
```
显然这不是一个无脑的 mkv 视频文件,详细信息如下:
```
CodeDisc Label: Le.colt.cantarono.la.morte.e.fu.tempo.di.massacro.1966.MULTi.COMPLETE.BLURAY-OLDHAM
Disc Size: 35,143,783,640 bytes
Protection: AACS
Playlist: 00002.MPLS
Size: 28,932,280,320 bytes
Length: 1:32:09.649
Total Bitrate: 41.86 Mbps
Video: MPEG-4 AVC Video / 34718 kbps / 1080p / 23.976 fps / 16:9 / High Profile 4.1
Audio: German / DTS-HD Master Audio / 2.0 / 48 kHz / 1027 kbps / 16-bit (DTS Core: 2.0 / 48 kHz / 896 kbps / 16-bit)
Audio: Italian / DTS-HD Master Audio / 2.0 / 48 kHz / 1045 kbps / 16-bit (DTS Core: 2.0 / 48 kHz / 896 kbps / 16-bit)
Audio: English / DTS-HD Master Audio / 2.0 / 48 kHz / 1020 kbps / 16-bit (DTS Core: 2.0 / 48 kHz / 896 kbps / 16-bit)
Audio: English / DTS-HD Master Audio / 2.0 / 48 kHz / 661 kbps / 16-bit (DTS Core: 2.0 / 48 kHz / 384 kbps / 16-bit)
Audio: German / DTS-HD Master Audio / 2.0 / 48 kHz / 645 kbps / 16-bit (DTS Core: 2.0 / 48 kHz / 384 kbps / 16-bit)
Subtitle: German / 7.006 kbps
Subtitle: English / 6.261 kbps
```
总码率 41.86 Mbps,三倍约为 123Mbps 。
文件总大小,32.73 GB,三倍约为 99 GB,时长约为 1:32:10 秒,也就是 5530 秒,(99*1024)/5530=约为 18.33m/s
每秒的 IO 总量如上,千兆也好,usb 3.0 也好你可以参考一下。
至于你说的读取时序的问题,硬盘是何种机制我不了解,但是至少从播放体验上来说,哪怕是 1G 的 1080p mkv 文件,拖动以后,播放器也会有 1 秒不到左右缓冲然后继续播放,排除播放器缓冲本身,我刚刚特地观察了一下我 nas 上的 NetDATA 图示:
https://10.via0.com/ipfs/QmPugun1r7Knbd1awzgkyXQWr42CDFZLEqEnm3oo7ZMu59/Snipaste_2021-01-05_07-12-17.png换句话说,我个人理解为,除非 3 个播放行为在同一瞬间,都在拖动播放器的进度条,否则...
既然现在场景复现的条件越来越多,越来越苛刻,还是那句话,
这样的场景意义何在??现实中有可能么?