Compressing BD50 to BD25 on NAS

[Guest]

I am having an issue with compression speed from BD50 to BD25 on a NAS, which is a D-Link DNS-343. The NAS is configured as RAID 5, using 4- 2 TB drives. Thus, there are 6 TB's of available space on the NAS, and it is connected to a Gigabit NIC through an N-series router, and the NIC is set up as 1000 Mbps Full duplex. It is mapped through Windows 7 as a network drive, and the only way to connect it to the PC is through its ethernet port. There are no eSata, USB, firewire, or other ports on the DNS-343. Thus, a direct connection to the PC is not possible. Besides, I like the idea of being able to see my movies elsewhere in the house through the LAN without having my PC on all the time. I only need to have the router and switch on.

Anyway, here's my problem with DVDFab Blu-ray copy. It takes an intolerably long time to compress a movie from BD50 to BD25 when the original movie is on the NAS RAID 5 drive, and I am also writing the compressed movie to another folder on the NAS. Below, I have pasted the log from a test I ran where I first compressed it on the NAS, and then compressed it on an internal drive in the PC. The compression on the NAS took 22 hours, while on the PC direct drive, it took only 3 hours! This is of course unacceptable, but I sure would like to figure out how to write to the NAS with DVDFab Blu-ray copy in a reasonable amount of time.

One clue is when I navigate to tell DVDFab where to write the compressed movie, I see a little red "X" on the NAS drive, which is mapped to drive letter R. However, if I choose the R drive anyway, DVDFab will read it okay and allow me to save the movie there. However, as you can see, it takes over 7 times as long to write the compressed movie to the NAS vs. an internal hard drive.

Does anybody have any ideas for me?

Compress from NAS folder to another NAS folder:

DVDFab 8.0.6.8 (2011/01/06 07:09:16)

0m 00.67s: option dvd2dvd 1 dvd2mobile 1 bluray2bluray 1 bd2mobile 1 bd23d 1 bd2dvd 1 file2mobile 1 filemover 1
0m 33.61s: got bdmv
0m 36.20s: got extended bdinfo
114m 42.45s: Blu-ray Copy: Main Movie
114m 42.45s: Source: R:\RHMN_Blu-Ray\BD_M-Z\Scott Pilgrim vs the World (2010)\BDMV\
114m 42.45s: Playlist: 0
114m 42.45s: Chapters: 1 -> 21
114m 42.46s: SourceSize: 25069 MB
114m 42.46s: RemoveHDAudio: 0
114m 42.46s: OutputTarget: BD25
114m 42.46s: OutputVideo: 1080p/i
114m 42.49s: Video reencode bitrate (23420 kbps)
114m 42.49s: compress begin: Blu-ray groups clips(00010.m2ts), playtime(6743778 ms), size(25069 MB)
114m 42.59s: processing source(00010.m2ts)
114m 42.59s: try to use gpu acceleration(1) for video decoding
114m 42.59s: CUDA GPU acceleration for video decoding enabled
114m 43.68s: h264_encode: encode param profile(2) level(41) bitrate(23420)
1357m 07.98s: info: filter(505.04), reach the mux end, something not out(1 - 0), drop it
1357m 15.03s: group(00010.m2ts ) playtime(6743778 ms) source(25069 MB) request(23463 MB) real(23069 MB) bitrate(23420 kbps)
1357m 15.04s: compress finished: groups request(23463 MB, 23463 MB) real(23069 MB) average_bitrate(23420 kbps)

Compress from hard drive folder to another hard drive folder:

DVDFab 8.0.6.8 (2011/01/08 08:59:37)

0m 00.71s: option dvd2dvd 1 dvd2mobile 1 bluray2bluray 1 bd2mobile 1 bd23d 1 bd2dvd 1 file2mobile 1 filemover 1
0m 33.80s: got bdmv
0m 33.85s: got extended bdinfo
2m 10.16s: Blu-ray Copy: Main Movie
2m 10.18s: Source: D:\Blu-Ray\Scott Pilgrim vs the World (2010)\BDMV\
2m 10.18s: Playlist: 0
2m 10.18s: Chapters: 1 -> 21
2m 10.18s: SourceSize: 25069 MB
2m 10.18s: RemoveHDAudio: 0
2m 10.18s: OutputTarget: BD25
2m 10.18s: OutputVideo: 1080p/i
2m 10.21s: Video reencode bitrate (23420 kbps)
2m 10.22s: compress begin: Blu-ray groups clips(00010.m2ts), playtime(6743778 ms), size(25069 MB)
2m 10.24s: processing source(00010.m2ts)
2m 10.24s: try to use gpu acceleration(1) for video decoding
2m 10.24s: CUDA GPU acceleration for video decoding enabled
2m 11.33s: h264_encode: encode param profile(2) level(41) bitrate(23420)
202m 38.42s: info: filter(505.04), reach the mux end, something not out(1 - 0), drop it
202m 45.47s: group(00010.m2ts ) playtime(6743778 ms) source(25069 MB) request(23463 MB) real(23069 MB) bitrate(23420 kbps)
202m 45.50s: compress finished: groups request(23463 MB, 23463 MB) real(23069 MB) average_bitrate(23420 kbps)

[Complication]

A Gig connection will never compare to access by the hard drive. DVDFab has to do lots of reads and writes to do the compression. Your best bet is to copy the disc to the local drive. You could try using the local as the source and the destination as the NAS. The write part of the equation is less than the read.

[Guest]

A Gig connection will never compare to access by the hard drive. DVDFab has to do lots of reads and writes to do the compression. Your best bet is to copy the disc to the local drive. You could try using the local as the source and the destination as the NAS. The write part of the equation is less than the read.

Sorry it took me awhile to get back to you, but your solution was right on! When I used the local as the source, the processing time went back to 3.5 hours. Thanks so much for the suggestion, and I owe you a virtual beer! :-)