CNN script bandwidth consumption

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davrust
Posts: 6
Joined: Mon Mar 21, 2011 11:39 pm

CNN script bandwidth consumption

Post by davrust »

Hi,

I've been trialing the WMS 1.08.2 and 1.09rc3 software and find they both work really well with my BDP-S370 player and 5Mbps DSL link. However I mainly wanted it to watch CNN and there's one issue with the cnnvideo.wdf script that I haven't been able to overcome;
Internet Explorer - wireshark trace shows it using a 640x406 video stream, playback is smooth
WMS - log shows it using a 1280x720 video stream, playback seems to buffer after 30sec unless I pause frequently.
Is there a way to configure the CNN script to take a lower bandwidth stream (e.g. 640x406 video) so that it doesn't overload my DSL link? Thanks for any advice!
davrust
Posts: 6
Joined: Mon Mar 21, 2011 11:39 pm

Re: CNN script bandwidth consumption

Post by davrust »

Tried moving the 578-720 height to "do not use" in the "Priority of Video Formats" list but the result is always the same, it always takes the 1280x720 video format. Maybe the FFmpeg codec can't decode the other formats?

FFmpeg version SVN-r25702, Copyright (c) 2000-2010 the FFmpeg developers
built on Nov 24 2010 13:41:21 with gcc 4.5.0
[mov,mp4,m4a,3gp,3g2,mj2 @ 026859d0] max_analyze_duration reached
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\\.\pipe\8916CEB73AAD4635840D5B5DA9D1F7
1A':
Metadata:
major_brand : avc1
minor_version : 0
compatible_brands: isomavc1
Duration: 00:03:32.54, start: 0.000000, bitrate: N/A
Stream #0.0(eng): Data: mp4s / 0x7334706D, 224 kb/s
Stream #0.1(eng): Data: mp4s / 0x7334706D, 240 kb/s
Stream #0.2(eng): Video: h264, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 2951 kb
/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
Stream #0.3(eng): Data: rtp / 0x20707472, 142 kb/s
Stream #0.4(eng): Audio: aac, 44100 Hz, stereo, s16, 111 kb/s
Stream #0.5(eng): Data: rtp / 0x20707472, 13 kb/s
Output #0, mpegts, to 'C:\MY PROGRAMS\WildMediaServer\WmsTemp\Test_3f8363492f73d
c5db221cad522ca814b.mpg':
(eng): Video: mpeg2video, yuv420p, 720x406 [PAR 255:254 DAR 45900:25781], q=2-31
, 6000 kb/s, 90k tbn, 29.97 tbc
(eng): Audio: ac3, 48000 Hz, stereo, s16, 448 kb/s
Stream mapping:
Stream #0.2 -> #0.0
Stream #0.4 -> #0.1
Eugene
Posts: 2940
Joined: Tue Nov 17, 2009 8:05 pm

Re: CNN script bandwidth consumption

Post by Eugene »

davrust wrote:Tried moving the 578-720 height to "do not use" in the "Priority of Video Formats" list but the result is always the same, it always takes the 1280x720 video format. Maybe the FFmpeg codec can't decode the other formats?
CNN link ?
davrust
Posts: 6
Joined: Mon Mar 21, 2011 11:39 pm

Re: CNN script bandwidth consumption

Post by davrust »

All the CNN podcasts behave exactly the same, for example from the "Categories / Latest News" directory:
http://www.cnn.com/video/#/video/politi ... 4.02.white
Eugene
Posts: 2940
Joined: Tue Nov 17, 2009 8:05 pm

Re: CNN script bandwidth consumption

Post by Eugene »

davrust wrote:All the CNN podcasts behave exactly the same, for example from the "Categories / Latest News" directory:
http://www.cnn.com/video/#/video/politi ... 4.02.white
Select the folder CNN - right click - Edit title - "Priority of video formats" - 202x320, 322x400, 402x480, 578x720 - Ok
Select a link - right click - "Load file properties" - column "Dimensions"
davrust
Posts: 6
Joined: Mon Mar 21, 2011 11:39 pm

Re: CNN script bandwidth consumption

Post by davrust »

Figured out what I was missing: after upgrading from 1.08.2 to 1.09rc4 I needed to delete the cnnvideo.wdf and add the cnnvideo3.wdf since the cnnvideo3 file contains a change that is essential to make the "Priority of video formats" work.

The CNN profile now selects a 768x432 size on the DSL link, which transcodes and plays on my Sony BDP-S370. The videos plays smoothly without any buffering. Thanks for all your help!
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