TS to FLV Converter

How to Convert TS to FLV Online

1. Upload Your TS File: Drag and drop or click "+ Add Files" to select one or more .ts files from your device. Batch upload is supported, and large HDTV/DVB recordings can be queued together.
2. Pick Codec and Quality Preset: The FLV container defaults to the FLV1 (Sorenson Spark) video codec with MP3 audio. Switch to the H.264 video codec for sharper output at the same bitrate, and change Audio Codec to AAC if your downstream player supports it. Pick a Quality Preset (Very High is the default) or switch File Compression to Constant Bitrate / Specific file size when you need a hard size target.
3. Resize, Trim, or Set Bitrate (Optional): Choose a preset resolution (1080p, 720p, 480p), scale by percentage, or enter a custom Width x Height. Use Trim to set a Start time and Duration so only the segment you want is re-encoded.
4. Convert and Download: Click "Convert" and download the resulting .flv file. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared.

Why Convert TS to FLV?

TS (MPEG-2 Transport Stream) is the broadcast container behind DVB, ATSC and IPTV — it is what your PVR, set-top box or OBS recorder writes when capturing live signals. FLV (Flash Video) is a far smaller, single-program container that older media servers, legacy CMS plugins and embedded players still expect. Converting strips the broadcast packetization, demuxes the program you want, and rewraps it into something an FLV-only pipeline can ingest.

• Feeding legacy media servers — Wowza, Red5 and older Adobe Media Server installations still ingest FLV over RTMP. If you record a stream as TS but the publishing pipeline only accepts .flv, this conversion is the bridge.
• Older LMS and CMS plugins — Moodle, Blackboard and a number of self-hosted WordPress video plugins built around JW Player 6 still serve FLV by default; uploading a re-wrapped FLV avoids reauthoring the player.
• Splitting one program from a multi-program transport — TS often carries several elementary streams (multiple audio languages, subtitles). Re-encoding to FLV forces a single video + single audio track, which is exactly what archival tools that choke on multi-program TS need.
• Smaller archive footprint — re-encoding a 1080p H.264-in-TS recording to FLV with H.264 at a tighter bitrate cap typically shrinks the file 30-60% versus the broadcast original, which is recorded at a generous bitrate ceiling for transmission robustness.
• Game-capture and tutorial workflows — older tutorial sites and screen-recording archives standardized on FLV before MP4 won out; converting modern OBS TS captures keeps a uniform library.
• Stripping broadcast PSI/PMT overhead — TS includes Program Specific Information packets for tuners. FLV does not, so the rewrapped file is leaner and parses faster in software that does not need program tables.

TS vs FLV — Container Comparison

Codec Choice Inside FLV

Frequently Asked Questions

Is FLV still worth converting to in 2026?

For brand-new content, no — MP4 (H.264/AAC) or WebM are the right targets and have been since Adobe Flash Player reached end-of-life on December 31, 2020. The legitimate use cases for fresh FLV output today are narrow: feeding a legacy RTMP-only server, satisfying an older LMS that only indexes .flv, or maintaining uniformity in an existing FLV archive. If your goal is web playback, use TS to MP4 instead.

Why does my converted FLV look worse than the TS source?

TS captures from broadcast or OBS are usually recorded at a high, transmission-safe bitrate (often 8-20 Mbps for 1080p). If the FLV is re-encoded with a lower target bitrate or the legacy FLV1 codec, the quality drop is visible. Switch the Video Codec to H.264, keep the resolution at the source size, and use the Very High Quality Preset to minimize loss.

Should I pick FLV1 or H.264 inside the FLV container?

H.264 unless your downstream tool genuinely cannot read it. FLV1 (Sorenson Spark / H.263) exists for compatibility with the very oldest FLV players and servers — it is roughly 2-3x larger than H.264 at the same perceptual quality. Wowza, Red5, JW Player 6+, VLC and ffmpeg-based tools all read H.264-in-FLV without issue.

My TS file has multiple audio tracks — what happens?

FLV only carries a single audio track. The converter keeps the first (default) audio program from the TS and drops the others. If you need a non-default language, demux the TS first with a tool like ffmpeg or MKVToolNix to isolate that track, then convert to FLV.

Will the converted FLV play in a modern browser?

Not natively. All major browsers (Chrome, Firefox, Edge, Safari) removed the Flash plugin in 2020-2021, so .flv files do not play in <video> tags either. They open in VLC, MPC-HC, PotPlayer and ffplay on desktop, and can be served by RTMP servers to native apps. For browser playback, convert TS to MP4 or WebM instead.

How big will the output be?

A rough rule for 1080p source: TS at broadcast bitrates (~10 Mbps) re-encoded to FLV with H.264 at the Very High preset lands around 4-6 Mbps, so a 10-minute clip drops from roughly 750 MB to 300-450 MB. If you need a hard ceiling, switch File Compression to Specific file size and set a target — the encoder will pick a matching bitrate.

Can I trim the TS before converting, so only part of it becomes FLV?

Yes. Open Trim under Advanced Options, set Start (in seconds) and Duration. The converter re-encodes only the selected range, which is faster than processing the whole TS and then cutting the FLV afterwards.

What about HEVC / H.265 inside FLV?

HEVC is not part of the FLV specification, so most FLV players and servers reject HEVC-in-FLV. Keep it H.264 or FLV1 when targeting FLV. If you specifically need HEVC, the right container is MKV or MP4.

Why not just use MP4?

For 99% of users in 2026, you should — MP4 plays in every modern browser, is supported on every device, and has better tooling. Use FLV only when an existing system explicitly requires the .flv extension or RTMP delivery. If you reach this page by mistake, try TS to MP4 for the modern path, or Compress TS if you just want a smaller transport stream without changing containers.