HD compression for web

[Shane Ross]

HD compression for web distribution? The only option then is H.264. There are many export options for that format in Compressor. Under the QT 7 streaming and download options.

Shane

Littlefrog Post
http://www.lfhd.net

[Chris Borjis]

Lots of studios (mine included) distribute HD dailies as Windows Media 9 files.

here are some basic specs:

1280×720 (all are done this way to keep size+interlacing issues down)

Video: Bitrate VBR, framerate 29.97, average bitrate 4mbps
Audio: VBR Quality 25, 44khz 2 channel

This would require an investment in flip4mac pro.

I’ve had lots of clients not been able to playback H.264 quicktimes or quicktimes at all, so thats what I do.

[Eamonspro]

Thanks for the input guys. I’m looking for more specifics on readying hd video for web streaming so clients would be able to look at it over a website or ftp.

Basically I’m trying to achieve the same quality that the below video from helinet has on their website and to maximize quality while keeping file sizes small.

Is there a formula that one could point me to for figuring out the data rates and keyframes to maximize this quality?

Thanks again, I hope I’m a little clearer this time!

[Eamonspro]

[eamonspro] “Basically I’m trying to achieve the same quality that the below video from helinet has on their website and to maximize quality while keeping file sizes small.”

Sorry forgot to link the video I was talking about.

https://www.helinet.com/54.129.0.0.1.0.phtml

[Chris Borjis]

[eamonspro] “Is there a formula that one could point me to for figuring out the data rates and keyframes to maximize this quality”

keyframe formulas that maximize efficiency:

150 for 15fps video

300 for 30fps video

the data rate is 4mbps as I said.

[Jeremy Doyle]

I just downloaded the video you were using as an example and pulled up the get info in quicktime and here is that video’s specs

H.264
720×405
Millions
AAC stereo 48k
FPS -29.97
data size – 23.49 megs for 2:21 TRT
data rate – 1389.38 kbits/s

This might give you a starting point.

Good luck

[Eamonspro]

Thanks Borjis and Jeremy for all the help! I tried both last night and both looked great. I now can also offer up both formats for my clients! You guys are lifesavers!