HElp re STreaming via Homeplugs


#1

Ok,

I bought the new netgear 500mbps homeplugs so i could stream my hd video from my nas server a ds411j. Upstairs I am getting good transfer rates of abouyt 14 MB/s- 16MB/s. Netgears tool shows a Tx of 420mbps. So getting about a 1/3 of throughput.

Now when I plug in downstairs the netgear tool shows a connection of Tx 221 mbps so as expected I lost a bit but still a good connection. I streamed some a 12gb mkv to my laptop from my nas using copy paste in the laptop and I was getting a steady 9.9MB/s so all good I think. Plug the ethernet into the wdtv and then try and watch a mkv. No good it stutters after a few minutes. I tried a few and some seem ok. I then connected an external hd to wdtv and streamed a file to it from my laptop upsatirs. Connection a  steady 5.9 MB/s which I thought was good enough for HD?

Any thoughts on why some would stutter here is the info of the file I have been using to test:-

General
Unique ID                        : 175735033745398866495167993543930630775 (0x8435561CCA82060FB644858070275277)
Complete name                    : C:\Users\XXX\Videos\Iron Man 2.mkv
Format                           : Matroska
File size                        : 12.3 GiB
Duration                         : 2h 4mn
Overall bit rate                 : 14.2 Mbps
Encoded date                     : UTC 2010-09-08 17:37:25
Writing application              : mkvmerge v3.2.0 (‘Beginnings’) built on Feb 12 2010 16:46:17
Writing library                  : libebml v0.7.9 + libmatroska v0.8.1
Cover                            : Yes

Video
ID                               : 1
Format                           : AVC
Format/Info                      : Advanced Video Codec
Format profile                   : High@L4.1
Format settings, CABAC           : Yes
Format settings, ReFrames        : 5 frames
Codec ID                         : V_MPEG4/ISO/AVC
Duration                         : 2h 4mn
Bit rate                         : 12.4 Mbps
Width                            : 1 920 pixels
Height                           : 816 pixels
Display aspect ratio             : 2.35:1
Frame rate                       : 23.976 fps
Color space                      : YUV
Chroma subsampling               : 4:2:0
Bit depth                        : 8 bits
Scan type                        : Progressive
Bits/(Pixel*Frame)               : 0.330
Stream size                      : 10.6 GiB (86%)
Title                            : x264_L4.1 @ 12410 Kbps
Writing library                  : x264 core 104 r1703 cd21d05
Encoding settings                : cabac=1 / ref=5 / deblock=1:-3:-3 / analyse=0x3:0x113 / me=umh / subme=9 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=32 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-4 / threads=12 / sliced_threads=0 / nr=0 / decimate=0 / interlaced=0 / constrained_intra=0 / bframes=5 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc=2pass / mbtree=0 / bitrate=12410 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:0.90
Language                         : English

Audio #1
ID                               : 2
Format                           : DTS
Format/Info                      : Digital Theater Systems
Codec ID                         : A_DTS
Duration                         : 2h 4mn
Bit rate mode                    : Constant
Bit rate                         : 1 510 Kbps
Channel(s)                       : 6 channels
Channel positions                : Front: L C R, Side: L R, LFE
Sampling rate                    : 48.0 KHz
Bit depth                        : 24 bits
Compression mode                 : Lossy
Stream size                      : 1.31 GiB (11%)
Title                            : English DTS 5.1 @ 1.5 Mbps
Language                         : English

Audio #2
ID                               : 6
Format                           : AC-3
Format/Info                      : Audio Coding 3
Mode extension                   : CM (complete main)
Codec ID                         : A_AC3
Duration                         : 2h 4mn
Bit rate mode                    : Constant
Bit rate                         : 224 Kbps
Channel(s)                       : 2 channels
Channel positions                : Front: L R
Sampling rate                    : 48.0 KHz
Bit depth                        : 16 bits
Compression mode                 : Lossy
Stream size                      : 200 MiB (2%)
Title                            : English Commentary Dolby Digital 2.0 @ 224 Kbps
Language                         : English

Text #1
ID                               : 3
Format                           : UTF-8
Codec ID                         : S_TEXT/UTF8
Codec ID/Info                    : UTF-8 Plain Text
Title                            : English
Language                         : English

Text #2
ID                               : 4
Format                           : UTF-8
Codec ID                         : S_TEXT/UTF8
Codec ID/Info                    : UTF-8 Plain Text
Title                            : Chinese Simplified
Language                         : Chinese

Text #3
ID                               : 5
Format                           : SSA
Codec ID                         : S_TEXT/SSA
Codec ID/Info                    : Sub Station Alpha
Compression mode                 : Lossless
Title                            : Chinese Traditional
Language                         : Chinese

Text #4
ID                               : 7
Format                           : UTF-8
Codec ID                         : S_TEXT/UTF8
Codec ID/Info                    : UTF-8 Plain Text
Title                            : English Commentary
Language                         : English


#2

I also use homeplugs. First it worked fine, i could access my nas through homeplugs and play movies, divx and mkv. But then 1080p was very stuttering and also som 720p movies. Got frustrated 

Bought a new router, d-link dir 655 that got excellent rating from users and also changed the cables to cat6 both from nas and also to homeplugs from router.

Now it works fine, I can stream all movies 1080p, 720p everything! But I still have a problem regarding this matter. When i transfer file 4.5gb from Nas to WD tv external usb hdd it takes around 32 - 36 minutes. But wireless with N adapter from stationary computer it takes only 12 minutes? The Nas is a synology DS110J. 

Homeplugs are used either way. Anyone?

edit. I would try to change cables if i was you. Buy cat6 cables both for nas and for homeplugs. Even though the wd tv only supports 10/100. If not the wires in your house are using different fase with the electricity. You can change with help from an electrian to get the disturbance away.