Bitrate
Also called bit rate, video bitrate, Mbps
What is bitrate?
Bitrate is the amount of data used to store or stream each second of video or audio, measured in megabits per second (Mbps) for video and kilobits per second (kbps) for audio. At the same resolution and codec, a higher bitrate keeps more detail, while a lower one causes blockiness, banding and smeared motion.
Encoders can use a constant bitrate (CBR), which keeps data flow steady and suits live streaming, or a variable bitrate (VBR), which spends more data on complex scenes and less on simple ones. VBR usually gives better quality for the same file size.
The bitrate a video needs depends on resolution, frame rate, the codec and how busy the picture is. Confetti, water and fast camera moves need far more data than a still slide with text.
Why bitrate matters
Social platforms re-encode every upload. Starting from a clean, reasonably high-bitrate file gives their encoder better material and reduces the muddy look that hurts product shots and small text.
Too high a bitrate causes other problems: huge files, slow uploads and, on some platforms, size limits. Knowing the sensible range keeps video sharp without wasting time and storage.
How to choose a bitrate for social video
- Export with H.264 in an MP4 unless a platform asks otherwise.
- For 1080p at 30 FPS, aim for roughly 8-12 Mbps; for 1080p at 60 FPS, go higher.
- For 4K uploads, expect roughly 35-45 Mbps or more.
- Use variable bitrate (VBR), two-pass if your editor offers it, for files you upload.
- Use AAC audio at about 128-320 kbps.
- Check the platform's current upload guidance, since recommendations change.
Bitrate FAQ
What bitrate should I use for 1080p video?
For uploads, about 8-12 Mbps at 30 FPS is a common target, and YouTube publishes its own recommended ranges. Streaming live usually uses a lower, constant bitrate around 4.5-6 Mbps.
Does higher bitrate mean better quality?
Up to a point. More data reduces compression artifacts, but past a certain level the difference is invisible and files just get bigger. The platform will re-compress it anyway.
Related terms
A codec is software that compresses and decompresses video or audio. H.264 is the most widely supported; H.265 (HEVC) and AV1 are newer and more efficient.
Video resolution is the number of pixels in each frame, written as width x height or a shorthand like 1080p or 4K. More pixels means more detail.
Frame rate is how many still images a video shows each second, measured in frames per second (FPS). Common rates are 24, 30 and 60 FPS.
MP4 is the most common video file format: a container that holds video, audio and subtitles, accepted by almost every platform, browser and phone.