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Glossary

Bitrate

Also known as: video bitrate, kbps, Mbps

Bitrate is often more important than resolution for perceived video quality. A 1080p video at 1 Mbps will look heavily compressed — visible blocking, smeared motion, faded colors — while a 720p video at 5 Mbps will look crisp and clean. This is why TikTok's 1080p videos (typically 2-4 Mbps) often look worse than YouTube's 1080p videos (typically 5-8 Mbps) even though both are nominally the same resolution.

Different platforms cap bitrate at different levels based on their bandwidth budget and audience patience. TikTok and Instagram aggressively compress to keep mobile data usage low; YouTube and Vimeo allow much higher bitrates because users tolerate longer initial buffering. Twitter / X is somewhere in the middle, around 3-6 Mbps for 1080p.

When you download a video, you get whatever bitrate the platform stored — there is no way to increase it after the fact, because the original detail is already lost in compression. Tools that claim to 'enhance' or 'upscale' video quality are using AI interpolation (which can add detail that wasn't in the original) and that's a separate process from downloading.

Related terms

H.264
H.264 (also called AVC, Advanced Video Coding) is the most widely used video compression codec on the internet. It compresses raw video into a much smaller file while preserving high visual quality, and it is the codec inside virtually every MP4 file served by TikTok, Instagram, YouTube, Facebook, X / Twitter, and Reddit.
1080p
1080p is a video resolution of 1920×1080 pixels (1920 wide by 1080 tall) — also called Full HD. The 'p' stands for progressive scan, meaning every frame is rendered as a complete image rather than interlaced. 1080p is the maximum resolution at which TikTok, Instagram, Twitter / X, and Facebook serve video.
MP4
MP4 (MPEG-4 Part 14) is a digital container format that holds video, audio, subtitles, and metadata in a single file. It is the dominant video format on the modern internet — TikTok, Instagram, YouTube, X / Twitter, Facebook, and Reddit all serve videos as MP4 internally.