Sample MKV 50MB File
Matroska video container
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Download 50MB MKV50 MBTestFile-mkv-50mb.mkv
File details
| Format | MKV |
| Extension | .mkv |
| MIME type | video/x-matroska |
| Size | 50 MB |
| Exact bytes | 52,428,800 |
| Filename | TestFile-mkv-50mb.mkv |
| Format version | Matroska (MKV) / H.264 High + AAC-LC — IETF RFC 8794 |
| Contents | 1,920 × 1,080 SMPTE colour bars, ~23 min; H.264 High CRF 23; AAC-LC 440 Hz stereo 128 kbps; Matroska container |
| Encoding | H.264 High profile, CRF 23; AAC-LC 44.1 kHz stereo 128 kbps; Matroska EBML container |
What is a 50MB MKV file useful for?
A 50 MB MKV represents a long OBS recording or a full game-capture session. Use it to test that your upload endpoint handles large Matroska files via multipart upload, that the remux-to-MP4 step is queued asynchronously rather than blocking the HTTP response, and that your media storage pipeline correctly identifies the container format and codec before attempting transcoding. At 25+ minutes of video, remux alone takes 15–30 seconds on a standard server.
What's inside this file?
Generated by ffmpeg. A 1,920 × 1,080 SMPTE colour-bar test pattern approximately 23 minutes long. H.264 High profile at CRF 23. Audio: a 440 Hz sine tone, stereo, AAC-LC at 128 kbps. Matroska container. At this duration the SeekHead index is critical for performance — without it, seeking to the end of the file would require scanning hundreds of Clusters.
Download via curl
curl -L "http://localhost:8000/files/mkv/TestFile-mkv-50mb.mkv" \ -o TestFile-mkv-50mb.mkv
Need different parameters?
Generate a custom MKV file with exact settings.