Stereo version: http://uk.youtube.com/watch?v=iXlq3eBHgyo&fmt=18
If that loads as mono for you, ensure your flash player is up to date (at least newer than 9.0 r45).
This is a stereo test with Windows Move Maker converting a 30fps MPEG4 MP3 480×360 video to 25fps 768×576 which Youtube then downconverts (back!) to 480×360.
Result: Passes. But changes fps and size (unnecessarily).
After I found youtube converts stereo to mono for uploaded videos, I looked at danbergam’s video:
Stereo test V2.0 – Pt.4/4 – Long WMV *PASSED*
To test your flash player can load stereo see http://uk.youtube.com/watch?v=BnN3TdgFYpY&fmt=18 or http://www.youtube.com/watch?v=rDjXGU75_P0&fmt=18
I saw that he used Windows Movie Maker (WMM). His stereo video required Flash Player version 9.0 r124 – with Flash 9.0 r45 Youtube delivers only the mono version.
So, this is my first ever test using WMM.
Annoyances with WMM:
* it insists on changing the pixel size, mainly from the Youtube 480 by 360 to 768 by 576 pixels.
* it changes the frame rate to 25
* these have the effect of muddying the video, but not as much as Youtube does
Results: …waiting…
Uploaded video details:
Format : Windows Media
File size : 1.55 MiB
PlayTime : 26s 99ms
Bit rate mode : CBR
Bit rate : 500 Kbps
BitRate_Maximum : 913 Kbps
Encoded date : UTC 2008-08-13 02:03:45.962
Writing application : 6.0.6000.16386 / Windows Movie Maker
Application : Windows Movie Maker 6.0.6000.16386
Video Codec : WMV3
Codec/Info : Windows Media Video 9
Codec description : Windows Media Video 9 –
PlayTime : 26s 80ms
Bit rate mode : CBR
Bit rate : 822 Kbps
Width : 768 pixels
Height : 576 pixels
Display Aspect ratio : 4/3
Frame rate : 25.000 fps
Resolution : 24 bits
Bits/(Pixel*Frame) : 0.074
Language : en-us
DeviceConformanceTemplate : MP@HL
Audio
Audio #0
Codec : WMA2
Codec/Info : Windows Media Audio 2
Codec description : Windows Media Audio 9.2 – 80 kbps, 44 kHz, stereo 1-pass CBR
Bit rate mode : CBR
Bit rate : 80 Kbps
Channel(s) : 2 channels
Sampling rate : 44.1 KHz
Language : en-us
DeviceConformanceTemplate : L1
Details of video that Youtube converts this to when &fmt=18 is added:
Format : MPEG-4
Format/Info : ISO 14496-1 version 2
Format/Family : MPEG-4
File size : 1.49 MiB
PlayTime : 26s 470ms
Bit rate : 472 Kbps
StreamSize : 17.6 KiB
Encoded date : UTC 2008-08-12 02:28:33
Video #0
Codec : AVC
Codec/Family : AVC
Codec/Info : H.264 (3GPP)
PlayTime : 25s 960ms
Bit rate : 350 Kbps
Width : 480 pixels
Height : 360 pixels
Display Aspect ratio : 4/3
Frame rate : 25.000 fps
Bits/(Pixel*Frame) : 0.081
StreamSize : 1.08 MiB
Title : (C) 2007 Google Inc. v06.24.2007.
Audio #0
Codec : AAC LC
Codec/Family : AAC
Codec/Info : AAC Low Complexity
PlayTime : 26s 470ms
Bit rate mode : VBR
Bit rate : 123 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 44.1 KHz
Resolution : 16 bits
StreamSize : 397 KiB
Duration : 0:0:27
No, but stereo …
No, but stereo songs do, I just spent 20 mins listening to a remastered beatles album and that was very clearly stereo. then i listened to another one on youtube that was clearly in stereo. I even listened to one in mono to test (not quite sure what outcome I was going for there…)
I just retested and …
I just retested and YouTube still streams this in stereo. Examine the saved file in your browser cache with a media analyzer. Also the stereo sounds when using Shockwave Flash version 10.0.32.18 on Firefox 3.5.3 on Vista. Do other stereo tests work for you?
FAIL
FAIL
funny
funny
ugh, thats a wierd …
ugh, thats a wierd feeling to my head when i put &fmt=18 and then watching it
Ok, I’m referring …
Ok, I’m referring to my Stereo Test V2.0, Part 4/4.
Looking in the Advanced properties of the WMV file I’ve uploaded there’s written:
Audio – Bitrate: 1011 kbps
If I’m not wrong, the mp3s are considered quite good when they are coded with a bitrate at least greater than 128 kbps…
I just copy and …
I just copy and paste the details from the software!
The audio on your stereo uploads look to be around 125 kbps – is that too low for good sound? What audio bitrate did you upload? All the recent HQ uploads seem to have 125 for audio, including those that uploaded 320 kbps.
Great attention to …
Great attention to the details.
Yes, WMM should introduce, in its rendering panel, some more options to customize…
What bothers me the most, now that we have found this way to still hear the stereo, is that the audio is heavily compressed (or, at least, this is what happened to my last upload when heard in stereo)… and this, when speaking about music, is really annoying… I understand that YT is free, but that compression was just unnecessary! :-\
Great test!
Stereo version: see …
Stereo version: see description or add &fmt=18 to the URL
If that still loads as mono for you, ensure your flash player is up to date (at least newer than 9.0 r45, I found r124 was necessary).