[Zackary Moran] “In compressor, what bitrate should I aim for 1280 x 720? Does setting a bitrate restriction help? “
Yes, if you have target file size you’re trying to meet you’ll have to restrict the data rate in order to meet that target size. Changing the physical resolution of the frame does not impact the file size – data rate (both audio and video) as well as CBR/VBR impact the file size. On a 6 minute file changing the audio from 320kbps to 256kbps will save you hardly any space….probably a few MB overall. Nothing substantial. You’ll have to throttle your video data rate. Running a VBR (variable bit rate) will allow the software to attempt to allocate the data more appropriately. So if a scene only needs 2Mbps to clearly define it then the software uses that, but if the scene needs more data. say 6Mbps, it’ll use that (within the parameters that you’ve set for data rate, you can specify your target data rate as well as a minimum/maximum data rate). CBR (constant bit rate) is when you’re going to indiscriminately apply the data rate to the entire encode. So regardless of whether or not the scene needs 7Mbps the whole encode is done at that data rate.
Vimeo has a good compression guide that should be able to walk you thorough the needed settings:
https://vimeo.com/help/compression
A bandwidth calculator is very helpful in situations like these:
https://web.forret.com/tools/filesize.asp?speed=10&unit=Mbps&dur=390
For your target you’ll need to stay under 10Mbps total data rate (audio + video) if you want to have a file under 500MB, provided your source material is 6.5 minutes long.
Ryan Holmes
http://www.ryanholmes.me
@CutColorPost