video suite

Convert MTS to FLV Online

Create FLV files from MTS sources with a free online converter. The conversion runs on the server, batches are supported, and the server limit is 100 MB per file. Keep the original file while you review the converted copy. The tool works without a plugin or extension.

Convert .MTS to .FLV

Select a file to begin. Processing details and limits are listed below.

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How to convert MTS to FLV

  1. 1

    Upload MTS files

    Add one or more MTS files to the queue. The uploader keeps batch items separate.

  2. 2

    Choose FLV settings

    Set the available quality or format options, or keep the defaults for a first pass.

  3. 3

    Create the FLV file

    Run the queue and download the FLV files individually or together as a ZIP.

MPEG Transport Stream vs Flash Video

SpecMPEG Transport StreamFlash Video
MIME typevideo/mp2tvideo/x-flv
Format typevideovideo
ContentsDigital broadcast transport stream.Flash video container.

About MPEG Transport Stream

Digital broadcast transport stream.

About Flash Video

Flash video container.

Why convert MTS to FLV?

  • A converted copy keeps the original file intact for comparison and future edits.
  • The output can be tested in the destination workflow before the original is archived.
  • A separate copy makes it easier to compare the old and new behavior.
  • Conversion is useful when the destination has a strict format requirement.

Will quality change?

Re-encoding can soften fine detail and change the file size. Keep the original master if editing or archival quality matters. Review the file in the application where it will be used.

Processing and limits

Processing
Server-side
Engine
FFmpeg
Maximum size
100 MB per file on the server.
Batch support
Yes, multiple files can be queued; completed results can be downloaded as a ZIP.
Quality controls
Options can adjust output dimensions, audio bitrate.

The file is processed on the server because the conversion requires a server-side engine or a utility operation.

  • MTS features without a direct FLV equivalent may not survive the conversion.
  • Conversion cannot restore detail that the source format already discarded.
  • Complex, encrypted, or unusually structured files may need manual review.

Platform compatibility

The output is a FLV file. Use an application or device that accepts that format, and test the result on the destination platform if compatibility is critical.

When not to convert

  • If FLV support is uncertain on the destination device, test a sample before processing a large batch.
  • Do not use a converted file as the legal or signed original when signatures or metadata must be preserved.
  • Do not overwrite the source; keep both versions until the output has been approved.

Frequently asked questions

How do I convert MTS to FLV online?
Upload a MTS file, choose the available FLV options, run the conversion, and download the result. The tool is free, supports batches, and accepts server uploads up to 100 MB.
Is Convert MTS to FLV free?
It is free, requires no account, and adds no watermark. Server uploads are limited to 100 MB per file, and browser-first paths are limited by device memory.
What happens to quality?
Re-encoding can soften fine detail and change the file size. Keep the original master if editing or archival quality matters. Review the file in the application where it will be used.
Does the file leave my device?
Yes. This conversion uses a server-side engine, so the file is uploaded over HTTPS, processed in an isolated request, and removed after the result is produced.
Is batch conversion supported?
Queue multiple files, run them together, and download the finished results as a ZIP. Each server file is limited to 100 MB, and large batches may take longer.
What are the limitations?
Open the downloaded FLV file in the application or database you plan to use, check the structure against the source, and keep the original until the output is approved.

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