Glossary
Codec
A codec is a video compression format that encodes video for storage and decodes it for playback — the most common for short-form platforms are H.264, H.265/HEVC, and VP9.
Codec stands for coder-decoder. It's the algorithm that compresses raw video data into a smaller file (encoding) and then reconstructs it for viewing (decoding). The same clip can look identical at very different file sizes depending on which codec is used and at what settings.
For clippers, codec choice matters at two points: export and upload. Every short-form platform has a preferred or required codec for uploads. TikTok, YouTube Shorts, and Instagram Reels all accept H.264 as the safe default — it's universally supported, well-optimized by every device, and rarely causes upload issues. H.265 (HEVC) offers smaller file sizes at the same quality but isn't supported by all upload pipelines.
H.264 at a high bitrate (10–20 Mbps for 1080p) gives you near-source quality at a reasonable file size. VP9 is Google's codec used internally by YouTube — it's efficient but not something you'd typically export to.
The practical rule for clippers: export as H.264, MP4 container, at the target platform's recommended bitrate. AutoClip exports in H.264 by default, sized for each platform's upload requirements, so you don't need to think about codec settings.
Related Terms
Frequently Asked Questions
What codec should I use for TikTok clips?
H.264 in an MP4 container is the safe choice for TikTok, YouTube Shorts, and Instagram Reels. It's universally supported and rarely causes upload or playback issues.
What's the difference between H.264 and H.265?
H.265 (HEVC) compresses video more efficiently — roughly half the file size of H.264 at the same quality. But not all upload pipelines and devices support H.265, so H.264 remains the more reliable choice for social media uploads.
Does codec affect video quality on TikTok?
TikTok re-encodes every uploaded video on its servers, which introduces some quality loss regardless of your upload codec. Uploading at higher bitrate H.264 gives TikTok's encoder more to work with and tends to produce cleaner output.
Put Codec to Work
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