Creator workbench catalog

Mbps to MB/s converter - bits, bytes and the factor of eight

Convert across the bit/byte boundary that causes most media-maths mistakes: connection speeds are quoted in bits, file sizes in bytes.

Megapixel calculator - pixels, megapixels and print size

Convert width × height into total pixels and megapixels, with the aspect ratio alongside.

MP3 vs WAV vs FLAC: which audio format for which job

Lossy, uncompressed and lossless explained without the audiophile arguments - and which one a creator should actually keep.

MP4 vs MOV: why your iPhone video is a MOV, and when to change it

MOV is Apple’s container, MP4 is the universal one - and they often hold identical video. What actually differs, and when converting is worth it.

MP4 vs WebM: which one should you actually use?

MP4 wins on compatibility, WebM wins on file size. A practical comparison for creators, with the cases where each one is the right answer.

MOV won't upload to LinkedIn? What to check

Yes - LinkedIn documents MOV for organic video on desktop, iOS and Android. Check the upload surface first, then the actual codec, duration and file size. This compatibility record does not diagnose your particular file.

MOV won't upload to Pinterest? What to check

Partially - MOV works from the Pinterest app, but not on the web uploader. Check the upload surface first, then the actual codec, duration and file size. This compatibility record does not diagnose your particular file.

MOV won't upload to TikTok? What to check

Yes - TikTok documents MOV uploads through its Content Posting API. Check the upload surface first, then the actual codec, duration and file size. This compatibility record does not diagnose your particular file.

MOV won't upload to X (Twitter)? What to check

Yes in X Media Studio - MOV support in other X upload surfaces is not established here. Check the upload surface first, then the actual codec, duration and file size. This compatibility record does not diagnose your particular file.

MOV won't upload to YouTube Shorts? What to check

Yes - YouTube (and Shorts) accepts MOV uploads directly. Check the upload surface first, then the actual codec, duration and file size. This compatibility record does not diagnose your particular file.

MP4 won't play or upload even though MP4 is supported - what's actually wrong

An .mp4 filename does not identify its codecs. Test playback in another player and inspect the actual streams in an editor. A browser playback failure alone does not prove corruption or upload incompatibility.

Merge subtitle files - join two SRT or VTT files in order

Join a second subtitle file onto the end of the first, offsetting its timings so the cues stay in order - for captions split across parts of a recording.

Merge videos online - free, no upload, no watermark

Join two or more video clips into one file entirely in your browser. Free, unlimited, no account and nothing uploaded to a server.

Mute a video online - free, no upload

Remove the audio track from a video entirely in your browser. Free, no login, no upload.