Free online TS to F4V converter

What the TS format is

TS, or MPEG transport stream, is a container designed for continuous transmission over broadcast, satellite, IPTV, and other error-prone networks. It commonly contains MPEG-2 video, H.264/AVC video, AAC audio, or AC-3 audio, and may include multiple programs, subtitles, and broadcast metadata.

Digital television receivers, capture cards, Blu-ray tools, network recorders, and video cameras can create .ts files. A single recording may contain several video or audio streams, so conversion software must select the intended program and tracks.

What the F4V format is

F4V is Adobe's Flash Video container based on the ISO Base Media File Format, the same container family used by MP4. It was designed mainly for H.264 video with AAC or compatible audio and was used for downloadable or streamed video in Adobe Flash workflows.

F4V can provide better compatibility with older Flash-based systems than TS, but Flash Player and most F4V-dependent workflows are obsolete. Use this format only when a specific application or legacy publishing system requires it; modern playback normally favors MP4.

How to convert TS to F4V

FFmpeg is the most controllable desktop option and is available for Windows, macOS, and Linux. A conversion that re-encodes to broadly compatible H.264/AAC is:

ffmpeg -i input.ts -map 0:v:0 -map 0:a:0? -c:v libx264 -preset medium -crf 22 -c:a aac -b:a 160k -movflags +faststart output.f4v

Replace input.ts with the source filename. The stream maps select the first video and first audio stream; the question mark allows the command to continue when the file has no audio. Lower the CRF value for higher quality and a larger file, or raise it for stronger compression. For archival-quality output, values around 18–20 retain more detail than the default shown.

If the TS already contains H.264 video and AAC audio, try remuxing without quality loss:

ffmpeg -i input.ts -map 0:v:0 -map 0:a:0? -c copy -movflags +faststart output.f4v

Remuxing is much faster because it changes the container rather than decoding and encoding the streams. It can fail or produce an unusable result when the source contains MPEG-2 video, AC-3 audio, unsupported stream metadata, or codec parameters that the F4V target does not accept. In that case, use the re-encoding command.

Inspect streams before choosing a method with:

ffprobe -v error -show_entries stream=index,codec_type,codec_name,profile,width,height,channels -of json input.ts

For a no-installation option, upload the file to the free converter on 101convert.com, choose F4V as the output format, start the conversion, and download the resulting file. Avoid uploading recordings containing confidential or copyrighted material unless the service's handling terms are acceptable.

Quality, compatibility, and limitations

F4V is not a universal replacement for TS: it normally supports a narrower codec and metadata combination, and converting from MPEG-2 or AC-3 to H.264/AAC causes generation loss. Re-encoding cannot restore detail already lost in the source.

Transport streams can contain interlaced broadcast video. If the output will be viewed progressively, add a deinterlacing filter such as -vf b yadif—with the typo-free form -vf yadif—before the video codec options; otherwise preserve the original scan format. Check the result in the target application because F4V support varies, and current browsers generally do not provide native F4V playback.