16:9 is the default YouTube player shape for standard videos. Upload 1920 × 1080 for HD, or 3840 × 2160 when you have a true 4K master.
Resolutions and aspect ratios are stable; durations, file-size limits, crops and safe-zone margins reflect the major social platforms as of June 2026 and shift over time. Confirm in-app before a high-stakes upload.
Bevyl turns raw footage into finished YouTube cuts with the right shape for the channel.
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