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Supports: TS
.ts recording (DVR clips, IPTV captures, camcorder AVCHD streams) onto the page, or click "+ Add Files" to browse. Batch upload is supported — settings apply to every file.NONE). For smaller files at telephony quality, pick G.711 µ-law or A-law from the codec list.A .ts file is an MPEG-2 Transport Stream — a packetised container designed for broadcast and IPTV that ATSC, DVB, and Blu-ray all use. AIFC (Audio Interchange File Format — Compressed) is Apple's 1991 extension of AIFF that adds optional compression codecs while keeping AIFF's big-endian chunk structure intact. Pulling the audio out of a transport stream and writing it as AIFC gives you a single self-contained audio file that Apple's pro audio tools handle natively.
~/Library/Audio/Apple Loops for tagging and reuse across sessions.| Property | TS (MPEG-TS) | AIFC |
|---|---|---|
| Type | Video + audio container | Audio-only container |
| Standard body | ISO/IEC 13818-1 | Apple Inc. (extension of EA IFF 85) |
| Released | 1995 | July 1991 |
| Byte order | Big endian (packet header) | Big endian |
| Typical audio codec | AC-3, AAC, MP2 | PCM (NONE/sowt), G.711 µ-law/A-law, IEEE float (fl32/fl64) |
| Compression | Lossy (AC-3, AAC) | Optional — PCM is lossless, µ-law/A-law are lossy |
| Container chunk ID | 188-byte packets, sync byte 0x47 |
FORM ... AIFC |
| Native macOS support | Requires VLC or QuickTime + codecs | Yes — Finder, QuickTime, Logic, Final Cut |
| Native Windows support | Requires VLC or codec pack | Limited — needs QuickTime or audio editor |
| Codec | Type | Typical use | File size vs 16-bit PCM AIFF |
|---|---|---|---|
NONE (PCM signed 16-bit big-endian) |
Lossless | Default, full fidelity | 1.0x (≈10 MB/min stereo at 44.1 kHz) |
sowt (PCM little-endian) |
Lossless | Cross-platform PCM | 1.0x |
fl32 / fl64 (IEEE float) |
Lossless | DAW intermediate masters | 2.0x / 4.0x |
ulaw / alaw (G.711) |
Lossy 8-bit log | Voice, telephony archives | ≈0.25x (8 kHz mono) |
G.711 µ-law is the North American/Japanese telephony standard; A-law is the European/international standard. Both encode 14-bit dynamic range into 8-bit samples — fine for speech, not for music.
AIFC is AIFF — same FORM container, same big-endian chunk layout — with one extra field in the Common chunk that names a compression codec. If you pick the NONE codec, an AIFC file is byte-equivalent to an uncompressed AIFF and macOS treats them identically. The reason to choose AIFC specifically is when you want compressed audio (G.711 µ-law/A-law for speech) inside Apple's preferred audio container, or when a downstream tool (older Logic projects, Apple Loops library, Soundtrack Pro) expects the .aifc extension.
No — AIFC does not carry multichannel AC-3. The conversion decodes AC-3 to PCM and downmixes to the channel layout you select (Stereo by default, or Mono). If you need to keep the 5.1 surround intact, choose a video container that supports AC-3 instead — converting TS to MP4 keeps the audio and video together and is more permissive about multichannel codecs than AIFC.
Long DVR or IPTV captures often run 4-8 GB. Conversion happens on our servers and large transport-stream files take longer to upload than the audio extraction itself takes to run. If you only need a portion of the recording, set a Trim start time and duration in step 3 before clicking Convert — the server can seek into the stream and process only the requested segment, which is faster than uploading the full file.
If you picked one of the G.711 codecs (µ-law or A-law), AIFC stores each sample as an 8-bit logarithmic value instead of a 16-bit linear sample, which cuts the byte count roughly in four. If you picked NONE and the file is still smaller than a comparable AIFF, the most likely reason is that the source TS audio was mono or recorded at a sample rate below 44.1 kHz — broadcast TV audio is often 48 kHz stereo but news and webinar captures are sometimes 32 kHz or 22.05 kHz mono.
VLC plays AIFC on Windows reliably for PCM and G.711 variants. Windows Media Player has inconsistent AIFC support and often falls back to "format not supported" for compressed AIFC. If your audience is mostly Windows, convert TS to WAV or convert TS to MP3 instead — both have universal Windows playback.
.aif, .aiff, and .aifc?.aif and .aiff are interchangeable extensions for the original 1988 Apple AIFF format, which is uncompressed PCM only. .aifc is the 1991 compressed variant; the container reports AIFC in its form-type field instead of AIFF. macOS and most audio editors treat all three extensions as the same file family, but some older tools key off the extension specifically — if a script or DAW rejects .aifc, try converting AIFC to AIFF (which just changes the form type to AIFF and forces the NONE codec).
Not when going to AIFC. AIFC's codec list (PCM, G.711 µ-law/A-law, IEEE float) does not include AC-3 or AAC, so the audio must be decoded to PCM and then optionally re-encoded to µ-law/A-law on the AIFC side. The conversion is still lossless for PCM output — decoding AC-3 once to 16-bit PCM and writing it to AIFC preserves the full audible result, but it is not a bit-for-bit copy of the source codec.
It's a legacy format, but Apple's pro audio tooling still produces and consumes it. Apple Loops in Logic Pro and GarageBand are technically AIFC files with extra chunks for tempo and key metadata. Final Cut Pro and Compressor write AIFC for archive-quality audio exports. Outside the Apple ecosystem, FLAC and WAV dominate — if you don't specifically need AIFC for an Apple workflow, convert TS to AIFF for uncompressed Apple-native or convert TS to MP3 for portability is usually a better choice.