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→Bitrate
If you are using H.264 compression, you can calculate a ballpark estimate for your target bitrate using the Kush gauge:
If you are using H.264 compression, you can calculate a ballpark estimate for your target bitrate using the Kush gauge:
Target Bitrate (kbps) = Frame Width (px) * Frame Height (px) * Frame Rate (fps) * Motion Factor * 0.07 / 1000
Target Bitrate (kbps) = Frame Width (px) * Frame Height (px) * Frame Rate (fps) * Motion Factor * 0.07 / 1000
"Motion Factor" is an arbitrary value (generally either 1, 2 or 4) that you assign to your video based on the amount of (fast) movement in the video. Higher amounts of movement require a higher amount of information to be stored in order to prevent quality loss.
"Motion Factor" is an arbitrary value (generally either 1, 2 or 4) that you assign to your video based on the amount of (fast) movement in the video. Higher amounts of movement require a higher amount of information to be stored in order to prevent quality loss.
Example calculation for a typical 720p video:
1280 * 720 * 25 * 2 * 0.07 / 1000 = 3225.6 kbps (= 3.2 Mbps)
Bitrate can be set to Constant (CBR) or Variable (VBR). A variable bitrate can help decreasing file size when your video has a combination of high and low amounts of movement, as it will optimize the distribution of information storage for those parts in your video. The downside is that your video player has to sometimes suddenly decode a lot more information than the previous frames, resulting in possible lag if your processor unit cannot keep up. For this reason, we advise using a constant bitrate.
Bitrate can be set to Constant (CBR) or Variable (VBR). A variable bitrate can help decreasing file size when your video has a combination of high and low amounts of movement, as it will optimize the distribution of information storage for those parts in your video. The downside is that your video player has to sometimes suddenly decode a lot more information than the previous frames, resulting in possible lag if your processor unit cannot keep up. For this reason, we advise using a constant bitrate.
Note that all this information applies only to video; audio is encoded and decoded separately.
== Software support ==
== Software support ==