| Source | Original Size | After H.265 (CRF 24) | After AV1 (CRF 32) | |--------|---------------|----------------------|--------------------| | 1080p movie (H.264, 8 Mbps) | 8 GB | 3 GB (-62%) | 2 GB (-75%) | | 4K movie (H.265, 25 Mbps) | 25 GB | 12 GB (-52%) | 8 GB (-68%) | | Animation (H.264, 4 Mbps) | 4 GB | 1.2 GB (-70%) | 0.9 GB (-77%) |
Since "MKV" (Matroska) is a , not a codec, compressing it is about what is inside the file. This report explains the core concepts, strategies, and tools. mkw compression
An MKV file is a "wrapper" containing video, audio, and subtitle tracks. You cannot "compress an MKV" directly without re-encoding the internal streams. Effective size reduction requires re-encoding the using a modern codec (H.265/HEVC or AV1) while selectively removing unnecessary audio tracks and subtitles. | Source | Original Size | After H
| Source | Original Size | After H.265 (CRF 24) | After AV1 (CRF 32) | |--------|---------------|----------------------|--------------------| | 1080p movie (H.264, 8 Mbps) | 8 GB | 3 GB (-62%) | 2 GB (-75%) | | 4K movie (H.265, 25 Mbps) | 25 GB | 12 GB (-52%) | 8 GB (-68%) | | Animation (H.264, 4 Mbps) | 4 GB | 1.2 GB (-70%) | 0.9 GB (-77%) |
Since "MKV" (Matroska) is a , not a codec, compressing it is about what is inside the file. This report explains the core concepts, strategies, and tools.
An MKV file is a "wrapper" containing video, audio, and subtitle tracks. You cannot "compress an MKV" directly without re-encoding the internal streams. Effective size reduction requires re-encoding the using a modern codec (H.265/HEVC or AV1) while selectively removing unnecessary audio tracks and subtitles.
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