How to Send a Large Video File Without Losing Quality
Avoid chat-app transcoding and broken colour spaces when delivering client video cuts.
Bit-exact delivery vs streaming previews
When you drop a video into a chat tool or consumer messaging app, it re-encodes the file to reduce bandwidth — altering Rec.709/Log gamma curves, crushing 10-bit gradients into 8-bit macroblocks, and downmixing audio bitrates. For client deliverables, always use a service that serves the exact binary with Content-Disposition: attachment.
For multi-file project handovers (such as LUTs, project files, audio stems, and renders), package companion assets into a single archive or multi-file transfer so the recipient has one canonical link.
Planning upload times for ProRes and 4K/6K masters
A 10-minute 4K ProRes 422 HQ master can easily exceed 35GB to 45GB. On a 100 Mbps fibre upload connection, 40GB takes roughly 57 minutes including TCP/TLS multipart overhead.
Resumable multipart uploading is critical for multi-gigabyte video files: if your Wi-Fi drops at 85%, only the active 16MiB part is retried rather than restarting the entire 40GB upload.
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