1 MB SRT sample file
An SRT file of exactly 1,048,576 bytes. It is a valid SubRip subtitles file, generated for this site and checked with an independent parser.
Download
sample-srt-1mb.srt
1 MB1,048,576 bytes
Download 1 MB SRTDirect download. No sign-up and no waiting.
- Type
- application/x-subrip
- SHA-256
5bfb4c5a2685b90066a70ec4b4f18c478aa31ff402cfe64ee50f4b8cd7499df3- Direct URL
https://sampletestfiles.com/downloads/srt/sample-srt-1mb.srt
What is in this file
8,940 numbered subtitle cues with comma-separated millisecond timestamps, plus one closing cue whose text is lengthened to reach the exact size.
| Cues | 8,941 |
|---|---|
| Cue length | 3 seconds, one every 4 seconds |
| Running time | 09:56:04 |
| Encoding | UTF-8 (ASCII characters only) |
| Line endings | LF |
How the file begins
The opening lines of sample-srt-1mb.srt, exactly as they appear in the file.
1
00:00:00,000 --> 00:00:03,000
This sample file exists so that software
can be tested with realistic input.
2
00:00:04,000 --> 00:00:07,000
Every line in this document was generated
by a script and describes nothing
confidential.
3
00:00:08,000 --> 00:00:11,000
Use it to check that uploads, downloadsPreview
Shows the first 64 KB of the file.
Where 1 MB matters
A 1,048,576-byte file: exactly the default upload limit of nginx, Spring Boot and Next.js. These are the default limits a file of this size is useful for testing:
| System | Limit | Note |
|---|---|---|
| nginx | 1 MB by default (client_max_body_size) | A multipart upload of this file exceeds the limit by the size of the form boundaries. |
| Spring Boot multipart | 1 MB per file by default (max-file-size) | A file of exactly 1 MB is at the limit. |
| Next.js API routes and Server Actions | 1 MB by default | Larger bodies need the size limit raised in configuration. |
| Cloud Firestore documents | 1 MiB (1,048,576 bytes) | The same number of bytes as this file. |
| Apache Kafka messages | About 1 MB by default | Brokers reject larger records unless message.max.bytes is raised. |
Use this file for
- Download tests on mobile connections
- Checking conversion to WebVTT
- Testing caption editors and timing tools
Testing notes for SRT
- Files saved in a legacy encoding show garbled accents; importers should detect or require UTF-8.
- SRT uses a comma before the milliseconds and WebVTT uses a full stop. Mixing them up is the usual reason a converted file fails.
Technical details
| File name | sample-srt-1mb.srt |
|---|---|
| Format | SRT (SubRip subtitles) |
| Extension | .srt |
| MIME type | application/x-subrip |
| Size | 1,048,576 bytes (1 MB) |
| Kind | Text |
| SHA-256 | 5bfb4c5a2685b90066a70ec4b4f18c478aa31ff402cfe64ee50f4b8cd7499df3 |
| Created | 2026-10-10 |
| Validation | Exact size, signature bytes and structure checked when the file was generated |
| Preview | Available on this page |
| Source | Generated for this site; not copied from elsewhere |
| Licence | Free to use, modify and redistribute (terms) |
| Category | Subtitles |
Validated for expected format and integrity. As with any download, scan the file with your own security tools before opening it. How files are made and checked
Download from the command line and verify
Fetch the file with curl, then compare its checksum with the SHA-256 value above.
curl -o sample-srt-1mb.srt 'https://sampletestfiles.com/downloads/srt/sample-srt-1mb.srt'
sha256sum sample-srt-1mb.srt # Linux
shasum -a 256 sample-srt-1mb.srt # macOSOn Windows, run Get-FileHash sample-srt-1mb.srt -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.
Related files
Questions about this file
- Is this file exactly 1 MB?
- Yes. It is 1,048,576 bytes, which is 1 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 1 MB SRT file?
- 8,940 numbered subtitle cues with comma-separated millisecond timestamps, plus one closing cue whose text is lengthened to reach the exact size.
- How long are the cues?
- Each cue lasts three seconds and a new cue starts every four seconds.