How to Convert Video for TikTok: Format & Size Guide
TikTok is the largest vertical video platform, and it has specific technical requirements for uploads. If your video is the wrong format, resolution, or aspect ratio, TikTok will either reject it or display it with black bars and poor quality. Learning how to convert video for TikTok correctly means your content looks sharp and fills the screen the way it should.
This guide covers TikTok's exact video specifications, file size limits, duration limits, and how to convert your footage using free browser-based tools.
TikTok Video Format Requirements
TikTok accepts a narrow set of video formats. The recommended configuration is:
- Container: MP4
- Video codec: H.264
- Audio codec: AAC
- Resolution: 1080 × 1920 px
- Aspect ratio: 9:16 (vertical)
- Frame rate: 30 fps or 60 fps
MP4 with H.264 is the safest choice. TikTok also accepts MOV files, but MP4 processes faster and produces smaller files with equivalent quality. If your source footage is in a different format — WebM, AVI, MKV, or a raw camera file — use the video converter to re-encode it to MP4 before uploading.
Resolution and Aspect Ratio
TikTok is designed for vertical video. The platform's native resolution is 1080 × 1920, which is a 9:16 aspect ratio. This fills the entire screen on a phone held upright.
If you upload a horizontal 16:9 video, TikTok will display it with black bars above and below the video. This wastes screen space and reduces engagement because the video looks smaller than everything else in the feed. Converting your video to 9:16 before uploading fixes this.
For the best quality, shoot or export at exactly 1080 × 1920. Higher resolutions like 4K vertical are supported but will be downscaled by TikTok, and the extra resolution doesn't improve the final display quality on mobile screens.
File Size and Duration Limits
| Spec | Limit |
|---|---|
| Maximum file size | 287.6 MB |
| Maximum duration | 3 minutes (regular upload) |
| Maximum duration | 10 minutes (desktop upload) |
| Recommended file size | Under 100 MB |
The 287.6 MB limit is generous, but larger files take longer to upload and process. If you're on a slow connection or uploading from mobile, keeping your file under 100 MB makes the process smoother. Use the video compressor to reduce file size without noticeably degrading quality.
For duration, standard TikTok uploads cap at 3 minutes. Some accounts can upload up to 10 minutes through the desktop web interface. If your video exceeds the limit, trim it down before uploading rather than letting TikTok cut it at an arbitrary point.
How to Convert Video for TikTok
- Convert to MP4. Load your source file into the video converter and select MP4 as the output format. This handles WebM, MOV, AVI, and other input formats.
- Set resolution to 1080 × 1920. Match TikTok's native vertical resolution. If your source is horizontal, you'll need to crop or add a blurred background to fill the vertical frame.
- Compress if over 100 MB. Run the file through the video compressor to reduce bitrate and file size while keeping visual quality.
- Trim to 3 minutes or less. Cut your video to fit within TikTok's duration limit, keeping your best content in the first 3 seconds to maximize watch-through.
All conversion happens locally in your browser. Your video isn't uploaded to any server, which is faster and more private than using cloud-based converters.
Extracting Audio for TikTok Trends
TikTok trends often revolve around specific audio clips. If you want to use a sound from a video you already have — or repurpose audio for a new trend — extracting the audio track is useful.
The video to MP3 tool pulls the audio from any video file and saves it as an MP3. You can then use that audio in your video editor when building a new TikTok. This is especially useful for creating custom sound templates or saving original audio from your own content.
Common TikTok Video Problems
Black bars on top and bottom mean your video is horizontal (16:9) instead of vertical (9:16). Convert and resize to 1080 × 1920 before uploading.
Low quality after upload usually means your bitrate was too high, causing TikTok to aggressively re-compress. Export at 1080 × 1920 with a bitrate around 8-10 Mbps and keep the file under 100 MB.
Upload failures are often caused by unsupported codecs. If your video uses VP9 or AV1, re-encode to H.264 in an MP4 container.
Audio sync issues can happen when the source video has a variable frame rate. Convert to a constant 30 fps to fix this.
Vertical Video Best Practices
- Keep important content in the center of the frame — TikTok's UI overlays cover the bottom and right edges.
- Add captions or subtitles directly in the video. Many users watch with sound off.
- Use the first 1-3 seconds as a hook. TikTok's algorithm heavily weights watch time.
- Export at 30 fps for standard content, 60 fps for fast-motion content like sports or gaming.
Key Takeaways
- TikTok's recommended format is MP4 with H.264 video and AAC audio.
- Native resolution is 1080 × 1920 (9:16 vertical) — always convert horizontal video before uploading.
- Keep files under 100 MB and durations under 3 minutes for the smoothest upload experience.
- Compress and convert locally to avoid quality loss from TikTok's own re-encoding.
For the latest specifications, check TikTok's help center for current format and duration limits. Meta's video encoding guidelines also cover shared technical standards for short-form vertical video across platforms.
