Sample MKV File Download — Matroska Video Test Files

Download free Matroska video sample files in MKV format — 1MB to 100MB with exact sizes. Use these MKV test files to verify multi-audio track switching, subtitle extraction, and codec compatibility. MKV is the most flexible video container — supports H.264, H.265, VP9, AV1, unlimited audio tracks, embedded subtitles, and chapter markers.

sample-1mb.mkv

1 MB

854×480 · 4s · 480p · H.264

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Verified file details

Filename: sample-1mb.mkv
Exact size: 1,048,576 bytes
Displayed size: 1 MB
MIME type: application/octet-stream
Dimensions: 854 x 480 px
Resolution: 480p
Duration: 4s
Codec: H.264
Frame rate: 30 fps
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/mkv/sample-1mb.mkv

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sample-5mb.mkv

5 MB

1280×720 · 10s · 720p · H.264

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Filename: sample-5mb.mkv
Exact size: 5,242,880 bytes
Displayed size: 5 MB
MIME type: application/octet-stream
Dimensions: 1,280 x 720 px
Resolution: 720p
Duration: 10s
Codec: H.264
Frame rate: 30 fps
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/mkv/sample-5mb.mkv

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sample-10mb.mkv

10 MB

1920×1080 · 10s · 1080p · H.264

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Filename: sample-10mb.mkv
Exact size: 10,485,760 bytes
Displayed size: 10 MB
MIME type: application/octet-stream
Dimensions: 1,920 x 1,080 px
Resolution: 1080p
Duration: 10s
Codec: H.264
Frame rate: 30 fps
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/mkv/sample-10mb.mkv

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sample-50mb.mkv

50 MB

1920×1080 · 55s · 1080p · H.264

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Verified file details

Filename: sample-50mb.mkv
Exact size: 52,428,800 bytes
Displayed size: 50 MB
MIME type: application/octet-stream
Dimensions: 1,920 x 1,080 px
Resolution: 1080p
Duration: 55s
Codec: H.264
Frame rate: 30 fps
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/mkv/sample-50mb.mkv

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sample-100mb.mkv

100 MB

1920×1080 · 120s · 1080p · H.264

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Filename: sample-100mb.mkv
Exact size: 104,857,600 bytes
Displayed size: 100 MB
MIME type: application/octet-stream
Dimensions: 1,920 x 1,080 px
Resolution: 1080p
Duration: 2m
Codec: H.264
Frame rate: 30 fps
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/mkv/sample-100mb.mkv

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sample-4k.mkv

75 MB

3840×2160 · 10s · 2160p · H.264

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Filename: sample-4k.mkv
Exact size: 78,643,200 bytes
Displayed size: 75 MB
MIME type: application/octet-stream
Dimensions: 3,840 x 2,160 px
Resolution: 2160p
Duration: 10s
Codec: H.264
Frame rate: 30 fps
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/mkv/sample-4k.mkv

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sample-h265.mkv

5 MB

1920×1080 · 10s · 1080p · H.265

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Verified file details

Filename: sample-h265.mkv
Exact size: 5,242,880 bytes
Displayed size: 5 MB
MIME type: application/octet-stream
Dimensions: 1,920 x 1,080 px
Resolution: 1080p
Duration: 10s
Codec: H.265
Frame rate: 30 fps
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/mkv/sample-h265.mkv

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sample-vp9.mkv

5 MB

1920×1080 · 10s · 1080p · VP9

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Verified file details

Filename: sample-vp9.mkv
Exact size: 5,242,880 bytes
Displayed size: 5 MB
MIME type: application/octet-stream
Dimensions: 1,920 x 1,080 px
Resolution: 1080p
Duration: 10s
Codec: VP9
Frame rate: 30 fps
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/mkv/sample-vp9.mkv

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sample-with-subtitles.mkv

10 MB

1920×1080 · 15s · 1080p · H.264

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Verified file details

Filename: sample-with-subtitles.mkv
Exact size: 10,485,760 bytes
Displayed size: 10 MB
MIME type: application/octet-stream
Dimensions: 1,920 x 1,080 px
Resolution: 1080p
Duration: 15s
Codec: H.264
Frame rate: 30 fps
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/mkv/sample-with-subtitles.mkv

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sample-multi-audio.mkv

10 MB

1920×1080 · 15s · 1080p · H.264

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Verified file details

Filename: sample-multi-audio.mkv
Exact size: 10,485,760 bytes
Displayed size: 10 MB
MIME type: application/octet-stream
Dimensions: 1,920 x 1,080 px
Resolution: 1080p
Duration: 15s
Codec: H.264
Frame rate: 30 fps
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/mkv/sample-multi-audio.mkv

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Use cases for sample MKV files

Testing MKV playback and codec support in video players
Verifying multi-audio track selection and switching
Testing embedded subtitle extraction and rendering
Benchmarking MKV vs MP4 container overhead
Testing video transcoding pipelines (MKV to MP4)
Validating metadata extraction (codec, resolution, duration)

MKV vs MP4 — When to use which

Feature	MKV	MP4
Video codecs	Any (H.264, H.265, VP9, AV1, etc.)	H.264, H.265, AV1
Audio tracks	Unlimited	Multiple (limited)
Subtitles	SRT, ASS, SSA, VobSub, PGS	Limited (tx3g, WebVTT)
Chapters	Yes (nested)	Basic
Browser support	None (use players)	All browsers
Streaming	Not designed for web	HLS, DASH
Best for	Archival, media servers, Plex	Web, mobile, streaming

How to convert MKV to MP4

# Remux without re-encoding (instant, no quality loss)
ffmpeg -i input.mkv -c copy output.mp4

# Re-encode to H.264 (slower, universal compatibility)
ffmpeg -i input.mkv -c:v libx264 -crf 23 -c:a aac output.mp4

# Extract subtitles from MKV
ffmpeg -i input.mkv -map 0:s:0 subtitles.srt

# List all tracks in an MKV file
ffprobe -show_streams input.mkv

Remuxing (-c copy) is nearly instant and preserves the original quality. It only works if the MKV contains codecs that MP4 supports (H.264/H.265 + AAC).

Codecs supported by MKV

Type	Codecs
Video	H.264, H.265/HEVC, VP8, VP9, AV1, MPEG-4, Theora
Audio	AAC, AC3, DTS, FLAC, Opus, Vorbis, MP3, PCM
Subtitles	SRT, ASS/SSA, VobSub, PGS, WebVTT

Technical specifications

Full name	Matroska Video Container
Extensions	.mkv (video), .mka (audio), .mks (subtitles)
Based on	EBML (Extensible Binary Meta Language)
Video codecs	Any — H.264, H.265, VP9, AV1, etc.
Audio codecs	Any — AAC, FLAC, Opus, AC3, DTS, etc.
Subtitles	SRT, ASS/SSA, VobSub, PGS, WebVTT
License	Open-source, royalty-free (LGPL)
Developed by	Matroska.org (2002)

Frequently Asked Questions

What is MKV format?

MKV (Matroska Video) is an open-source video container format based on EBML. It can hold virtually unlimited video, audio, subtitle, and metadata tracks in a single file — supporting any codec including H.264, H.265, VP9, AV1, FLAC, AC3, and DTS. MKV is the most flexible container available, used extensively for media archival, Plex/Jellyfin/Emby servers, and high-quality video distribution.

MKV vs MP4 — What is the difference?

MKV supports any codec and unlimited audio/subtitle tracks, making it ideal for archival and media servers. MP4 is limited to H.264/H.265/AV1 video and AAC/AC3 audio, but has universal browser support and streaming compatibility (HLS/DASH). Use MKV for local playback and archival; use MP4 for web, mobile, and streaming. You can remux MKV to MP4 instantly with 'ffmpeg -i input.mkv -c copy output.mp4' if codecs are compatible.

How to play MKV files?

Desktop: VLC (free, plays everything), mpv, PotPlayer, or MPC-HC. macOS: IINA or VLC. Mobile: VLC for Android/iOS, MX Player (Android). Smart TV: most modern Samsung/LG/Sony TVs play MKV natively via USB. Media servers: Plex, Jellyfin, and Emby transcode MKV on-the-fly if needed. Browsers cannot play MKV — convert to MP4 for web playback.

How do I convert MKV to MP4 without losing quality?

If the MKV contains H.264/H.265 video and AAC audio, use 'ffmpeg -i input.mkv -c copy output.mp4' to remux instantly without re-encoding. This preserves 100% quality and takes seconds. If the codecs aren't MP4-compatible (e.g., VP9 video or FLAC audio), re-encoding is required: 'ffmpeg -i input.mkv -c:v libx264 -crf 23 -c:a aac output.mp4'.

What is the difference between MKV and WebM?

WebM is a subset of MKV — it uses the same Matroska container but restricts codecs to VP8/VP9/AV1 video and Vorbis/Opus audio. WebM is designed for web browsers (Chrome, Firefox, Edge); MKV is designed for maximum flexibility and supports any codec. Our sample files let you test both formats.

Can MKV files have subtitles?

Yes — MKV is the best container for subtitles. It supports SRT, ASS/SSA (styled), VobSub (DVD bitmap), PGS (Blu-ray bitmap), and WebVTT. Multiple subtitle tracks in different languages can be embedded in a single MKV file. Our sample-with-subtitles.mkv includes embedded SRT subtitles for testing extraction and rendering.

Sample MKV File Download — Matroska Video Test Files

Use cases for sample MKV files

MKV vs MP4 — When to use which

How to convert MKV to MP4

Codecs supported by MKV

Technical specifications

Frequently Asked Questions

Other video formats

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