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Compressor settings for 30 min web videos
I need to figure out the best Compressor output for 30 minute QT videos to be posted on the web. It’s a series of lectures and they’ll be watched in a small box on a website.
I’ve been using the following output setting for 16X9 videos that are 10 minutes or shorter and it’s worth giving it a try on your short form videos. However, this is taking way too long for my longer videos.
Shorter video output setting are:
Description: H.264 video at 1,000Kbps with AAC 44.1kHz audio
File Extension: mov
Estimated size: 460.8 MB/hour of source
Audio Encoder
AAC, Stereo (L R), 44.100 kHz
Video Encoder
Format: QT
Width: 720
Height: 405
Pixel aspect ratio: Square
Crop: None
Padding: None
Frame rate: 30
Frame Controls Automatically selected:
Retiming: (Fast) Nearest Frame
Resize Filter: Linear Filter
Deinterlace Filter: Better (Motion Adaptive)
Adaptive Details: Off
Antialias: 0
Detail Level: 0
Field Output: Progressive
Codec Type: H.264
Multi-pass: On, frame reorder: On
Pixel depth: 24
Spatial quality: 50
Min. Spatial quality: 50
Key frame interval: 150
Temporal quality: 50
Min. temporal quality: 50
Average data rate: 1.024 (Mbps)
Maximum data rate: 1.024 (Mbps)
Hinted for QuickTime
streaming server -
3 Replies
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There’s no point in doing VBR if your Average & Maximum are going to be the same. There’s no ‘variable’ in your data rate. At that point, you might just try CBR (Fast, worse quality>)
Have you considered a hardware encoder?
Best,
Jeff I. Greenberg
Author/Master Instructor/Speaker/Consulting
My contact info and more
New! Come see me speak @ NAB/Post Production World! -
Sometimes, if you have the time, I usually run a test on one minute of video, but running it through 3-5 different compressor softwares. I look at speed of encode, quality, and what control I actually am given inside the encoding software. Run some speed and quality tests, then you know how long a file takes, but checking the info of the file, and the time started or time ended or ‘created’, this will give you a ratio to use for 1 minute, so now, you can predict how long each encoder will take, and also evaluate quality, but normally, quality encodes can take longer regardless the compression software you are using. Bitrate, frame-rate and some other things can be changes to increase speed of encode drastically and not affect quality too much.
Jan Ozer is the genius of this, and he has a ton of info on-line about tricks you can do to help. I have friends who take frame-rates from 29.97 to 15 or less, and do not see that much of a quality hit, so.
Hope this helps a little…
Tom Laughlin
Producer/Editor
Digital Chop House
Salt Lake City, Utah -
Just wondering, what are the specs for the source file?
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