CONVERT FLV → TS (FLV to TS)
Fast, secure FLV to TS conversion. No registration required.
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Automatic format identification and lossless transcoding across 201+ formats.
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HOW TO CONVERT FLV → TS
Drop the video file
Select a FLV file. We read the container and stream descriptors to plan the conversion.
FFmpeg handles the repackage
When codecs align, FFmpeg rewraps the existing streams into a TS container — no quality loss, near-instant finish.
Retrieve the TS
The TS download is ready in seconds for stream-copy jobs, minutes for full transcodes.
Starting point: FLV is the Adobe Flash Video container, now deprecated but still lingering in archives. Natural next step, a TS. If you need a TS version of a FLV clip for a social platform, a stock site or a CMS upload widget, this tool handles the job without re-rendering anything when it does not have to. The output is the same pixel data in a container the destination actually accepts. Keep in mind FLV is the Adobe Flash Video container, now deprecated but still lingering in archives. And remember that TS is the MPEG transport stream, used in broadcast and HLS streaming segments.
Why convert FLV to TS
Sending FLV to someone on a non-matching operating system frequently leads to "file cannot be opened". TS avoids that by sitting in the middle of everyone's compatibility list. The repackage runs quickly and without generational loss when codecs already align.
FLV vs TS — Technical specifications
Side-by-side comparison of the technical details.
FLV
- MIME type
- video/x-flv
- Extensions
- .flv, .f4v
- Video codecs
- Sorenson Spark, VP6, H.264 (F4V)
- Audio codecs
- MP3, Nellymoser, AAC
- Status
- Deprecated since December 31, 2020
- MIME Type
- video/x-flv
- Extension
- .flv
- Category
- Video Files
- Full Name
- Flash Video
- Conversion Engine
- FFMPEG
TS
- MIME type
- video/mp2t
- Extensions
- .ts, .m2ts, .mts
- MIME Type
- video/mp2t
- Extension
- .ts
- Category
- Video Files
- Full Name
- MPEG Transport Stream
- Conversion Engine
- FFMPEG
- Standard
- ISO/IEC 13818-1 (MPEG-2 Systems)
- Packet size
- 188 bytes (standard); 192 bytes (M2TS/Blu-ray)
- Primary use
- Broadcast TV + HLS streaming
| Specification | FLV | TS |
|---|---|---|
| MIME type | video/x-flv | video/mp2t |
| Extensions | .flv, .f4v | .ts, .m2ts, .mts |
| Video codecs | Sorenson Spark, VP6, H.264 (F4V) | — |
| Audio codecs | MP3, Nellymoser, AAC | — |
| Status | Deprecated since December 31, 2020 | — |
| MIME Type | video/x-flv | video/mp2t |
| Extension | .flv | .ts |
| Category | Video Files | Video Files |
| Full Name | Flash Video | MPEG Transport Stream |
| Conversion Engine | FFMPEG | FFMPEG |
| Standard | — | ISO/IEC 13818-1 (MPEG-2 Systems) |
| Packet size | — | 188 bytes (standard); 192 bytes (M2TS/Blu-ray) |
| Primary use | — | Broadcast TV + HLS streaming |
FLV vs TS — Strengths and limitations
What each format does best, and where it falls short.
FLV Strengths
- Low overhead — the container is extremely compact.
- Designed for streaming — progressive download and seeking work well.
- Decoded natively by Flash Player on every OS for 20 years.
Limitations
- Flash Player is dead — no modern browser can play FLV without conversion.
- Legacy codecs (Sorenson, VP6) are poorly supported in modern tooling.
- Hardware video decoders never added FLV support.
TS Strengths
- Designed for noisy channels — packet-level error correction.
- Multi-program: one TS can carry several TV channels.
- Native format for all digital TV broadcasts and HLS streaming.
- Streaming-first: no need to download whole file to start playing.
- 30+ years of stable, deployed infrastructure.
Limitations
- Packet overhead (~3% vs Program Stream).
- Seek index is implicit — requires scanning for random access.
- Multiple audio/subtitle selection requires parsing PMT (Program Map Tables).
Quality & Compatibility
Resolution, frame rate and colour space are preserved end-to-end. If the TS container does not support some FLV features (chapters, multiple subtitle tracks, DRM-protected streams), those are flattened or dropped with a warning. Hard-coded subtitles in the video frames always survive.
Tips for Best Results
- Embedded subtitle tracks convert between FLV and TS when both containers support the same subtitle codec; otherwise burn the subtitles into the video first.
- For portrait (9:16) clips, make sure the TS encoder preserves the correct display aspect ratio — some players default to 16:9 if SAR is ambiguous.
- Long recordings (over an hour) benefit from chapter metadata; TS may not preserve FLV chapters — check before relying on them.
Frequently Asked Questions
Only when it has to. If the codecs inside FLV (usually H.264 or H.265 for video, AAC for audio) are accepted by TS, we stream-copy — the bytes are repackaged into the new container with zero re-encoding and no quality loss. When the source uses a codec the target does not support, we transcode at a matching bitrate to keep the visual quality close to the original.
With stream copy, expect the job to finish in seconds to tens of seconds regardless of video length — the work is mostly rewriting the container. Transcoding is slower (roughly real-time: a ten-minute clip takes about ten minutes) because every frame must be decoded and re-encoded. The progress bar shows which mode applies.
Yes. Resolution, frame rate, colour space and bit depth are preserved by default; stream copy is literally bit-identical on these parameters. If you explicitly pick a lower bitrate or a different codec in Advanced, the output is rebuilt to those settings, but the default is always "match the source".
Flash Video
Source formatFLV was the dominant web video format during the Flash era. While Flash is now deprecated, many legacy video files still exist in FLV format and need conversion to modern formats.
MPEG Transport Stream
Target formatTS (Transport Stream) is used for broadcasting, streaming, and recording live TV.
Going the other way? Convert TS back to FLV with the same engine.
Common Use Cases
Share across platforms
Send TS files to anyone without worrying about whether they have the right software for FLV.
Embed in documents
Drop TS output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
TS often produces smaller files than FLV for web, email and storage.
Archive & future-proof
Store in a widely-supported format that will still open on future operating systems without legacy plugins.
FLV vs TS — Typical file sizes
Approximate file sizes for common scenarios.
- 10-min YouTube 2008-era video 40-80 MB
- 45-min TV show (FLV H.264) 200-500 MB
- HLS video segment (6 seconds, 1080p) 2-5 MB
- 1 hour recorded TV (HD) 4-8 GB
- Satellite transponder capture (1 min) ~300 MB
Working with 4K/8K Video or Files Over 100MB?
Web browsers impose strict RAM limits on media streams. For gigabyte 4K/8K footage, GPU-accelerated NVENC transcode, or batch subtitle muxing, dedicated desktop encoders deliver zero upload delays.
One-time payment with zero recurring commitment: convert files up to 1 GB, OCR, PDF/A, and .ZIP batches for 24 hours.
Full 7 days of unlimited conversions, up to 2 GB per file, 100% ad-free with zero subscription.
High-throughput enterprise pipeline for files up to 2,048 MB, 50-file batches, ISO PDF/A, and priority processing.
Uncapped 4K/8K multi-track transcoding with hardware NVENC, VideoToolbox, and AV1/HEVC pipelines.
10-bit color grading workflows, Apple ProRes mastering, and automated watch-folder queues.
Related comparisons
See these formats side by side to understand which fits your use case best.
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