Maintaining Subtitles and Metadata During Compression
Updated: 12/3/2025
Subtitles & Metadata
Featured Videos
- Create WebVTT Captions
- Convert SRT ↔ VTT
Tracks
Prefer remux over re‑encode
Copy subtitle streams
Preserve chapters
Metadata
Keep titles/artist/year
Verify after encode
Use reliable tools
Notes
Container choice matters
MP4 and MKV support differs
Test playback on targets
Related articles
- H.264/H.265/AV1 Parameter Tuning for Practical CompressionA hands‑on overview of key parameters across H.264, H.265 (HEVC), and AV1, with compatibility tips, bitrate controls, and example recipes aligned with Vibbit workflows.CompressionCodecH.264H.265AV1
- CRF Basics: Picking the Right Quality LevelUnderstand Constant Rate Factor (CRF), typical ranges and trade‑offs.CompressionCRFQuality
- PSNR/SSIM Metrics and Subjective Quality: How to Use ThemExplain what PSNR and SSIM measure, why they can disagree with perception, and how to combine metric checks with human review to make solid compression decisions for Vibbit workflows.CompressionQualityPSNRSSIMEvaluation
- Two‑Pass Encoding vs. CRF: When to Use EachClear, practical guidance for Vibbit users on choosing between two‑pass bitrate targeting and CRF quality targeting, with trade‑offs, constraints, and recommended settings for reliable delivery.CompressionCRFTwo‑PassBitrateDelivery