Convert FLV to MKV on Mac
Convert FLV files to MKV format on your Mac with Jollycat. Adobe Flash video format. Legacy format from the Flash era, still found in older web video archives. All processing runs locally on your Mac — no cloud processing and no uploads required for conversion.
FLV vs MKV
| Property | FLV | MKV |
|---|---|---|
| Type | container | container |
| Compression | H.263/VP6/H.264 + MP3/AAC | Any codec |
| Container | Yes | Yes |
| Common Codecs | H.263, VP6, H.264, MP3, AAC | H.264, H.265, VP9, AV1, FLAC, AAC, DTS |
| File Extension | .flv | .mkv |
| Key Advantage | Common in legacy archives | Supports any codec |
How to Convert FLV to MKV on Mac
Open your FLV file
Drag and drop your .flv file onto the Jollycat icon in your macOS dock or menu bar. Jollycat instantly detects the format.
Choose MKV as output
Select MKV from the conversion options. Adjust quality settings, bitrate, or resolution if needed.
Convert and save
Click Convert and Jollycat processes the file instantly on your Mac. No uploads required, no waiting — everything runs locally on Apple Silicon.
When to Convert FLV to MKV
MKV advantages
Supports any codec. Multiple audio/subtitle tracks.
FLV limitations
Obsolete format. Flash is discontinued.
Common use cases
High-quality video storage, Movies with subtitles, Multi-track media.
FLV to MKV Conversion Tips
Use Jollycat's trim and crop tools to edit your video before converting. This saves time by only processing the parts you need.
For sharing online, MKV with H.264 codec provides the best balance of quality and compatibility.
MKV is a flexible container that can hold virtually any video, audio, and subtitle codec combination.
Frequently Asked Questions
Is the FLV to MKV conversion free?
Jollycat is a one-time purchase for $9.99. Once purchased, you can convert FLV to MKV and use all 1,650+ conversion paths with no limits.
Does converting FLV to MKV require an internet connection?
No. Jollycat processes everything locally on your Mac. Your FLV files never leave your device — all conversion happens offline using Apple Silicon.
Can I batch convert multiple FLV files to MKV?
Yes. Drag multiple FLV files onto Jollycat and convert them all to MKV at once. Batch processing is built in.
Ready to Convert FLV to MKV?
Jollycat handles FLV to MKV conversion and 1,650+ other format conversions. All offline on your Mac.
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