Dailymotion’s HD video details.

By slacy|General|3 Comments

You may have seen a post that Dailymotion now supports HD video.

I actually played that first ‘racecar’ clip, and was impressed at the fullscreen quality, so I did some more digging and found some more about the video.

First, here’s a direct link to the content itself. The URL alone implies a couple of things:

1. It says that its 1280×720, which it actually is.
2. It says that its an “on2″ encoded file, which it actually is.
3. It looks like there’s some kind of encryption key there, so this URL may not work for you. Let me know if you try it and it does.

After downloading the file, we can see that its 28MB in size. Here are the interesting bits from “mplayer -identify”:

ID_FILENAME=7366107.on2?542422e9d0fc8676892221122126a3b813215d0
ID_DEMUXER=lavfpref
ID_VIDEO_FORMAT=VP6F
ID_VIDEO_BITRATE=0
ID_VIDEO_WIDTH=1280
ID_VIDEO_HEIGHT=720
ID_VIDEO_FPS=30.000
ID_VIDEO_ASPECT=0.0000
ID_AUDIO_FORMAT=85
ID_AUDIO_BITRATE=96000
ID_AUDIO_RATE=44100
ID_AUDIO_NCH=2
ID_LENGTH=128.78
ID_VIDEO_CODEC=ffvp6f
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
AUDIO: 44100 Hz, 2 ch, s16le, 96.0 kbit/6.80% (ratio: 12000->176400)
ID_AUDIO_BITRATE=96000
ID_AUDIO_RATE=44100
ID_AUDIO_NCH=2

So, its 128.78 seconds long, and that gives us a total file bitrate of 1.76Mbps. We can see that its video format is “VP6F” which is On2′s VP6 encoder. I’m not sure what the extra “F” is. This codec has roughly equivalent quality to h.264. We can also see that they’re using 96kbps mp3 stereo encoded audio.