TS to M4A Converter

How to Convert TS to M4A Online

1. Upload Your TS File: Drag and drop your .ts transport stream files into the uploader, or click "+ Add Files" to browse. Batch uploads are supported — queue an entire DVR session at once.
2. Pick Audio Codec and Bitrate: AAC is the default codec inside M4A (the Apple/iTunes-friendly choice). In Advanced Options, set Quality Preset to "Very High (Recommended)" for transparent audio, or switch to Constant Bitrate and choose 128, 192, 256, or 320 kbps. Variable Bitrate offers AAC ranges like 96k-112k for smaller files at similar perceived quality.
3. Trim or Resize (Optional): Use the Trim controls to set a start time and duration if you only need a clip (useful for ripping a single song from a long TV recording). Audio Channel and Audio Sample Rate default to "ORIGINAL" — leave them alone unless you need to downmix to mono or resample to 44.1 kHz.
4. Convert and Download: Click "Convert." The audio stream is extracted and re-encoded server-side — no sign-up, no watermark, no install. Need a different audio format? Try TS to MP3 or TS to AAC instead.

Why Convert TS to M4A?

A .ts file is an MPEG transport stream — the container format standardized as ISO/IEC 13818-1 in 1995 for broadcast, IPTV, and DVB/ATSC delivery. It typically wraps an H.264 or MPEG-2 video stream alongside an AAC, AC3, or MP2 audio track. When you only want the audio (a podcast captured from a satellite recording, music from a live TV broadcast, a sermon from an IPTV stream), M4A is the cleanest target: it's the audio-only variant of the MPEG-4 container and is natively supported by iTunes, Apple Music, the iPhone Music app, macOS QuickTime, and most modern Android devices.

• Rip audio from PVR/DVR recordings — Set-top boxes from TiVo, Humax, Topfield, and various IPTV providers save broadcasts as .ts. Extracting the audio to M4A lets you sync that recording to your phone's music library or a smartwatch without keeping the multi-gigabyte video.
• Get a single track off a concert capture — Use the Trim controls to grab the 4 minutes you actually want and save just that as M4A, instead of carrying a 90-minute broadcast around.
• iTunes / Apple Music import — Apple's apps prefer .m4a over .ts for audio, and M4A files appear correctly in playlists, sync to iPod/iPhone, and show metadata in the Music app where TS would just be ignored.
• Smaller files than the original TS — A 1-hour TS recording is often 1-3 GB; an AAC-encoded M4A at 192 kbps is roughly 80 MB. You keep listenable audio quality and drop ~95% of the file size.
• Audiobooks and lecture archives — M4A supports chapter markers when produced as .m4b, and the AAC codec at 64-96 kbps mono is plenty for speech. Convert a recorded webinar or class once and keep it in your library forever.
• Avoid AC3 / EAC3 compatibility headaches — Many TV broadcasts ship AC3 (Dolby Digital) audio inside the TS. Re-encoding to AAC inside M4A removes that compatibility tax so the file plays on phones, browsers, and web players that don't license AC3.

TS vs M4A — Format Comparison

AAC Bitrate Quick Guide for M4A Output

Frequently Asked Questions

Why is my TS file so large compared to the M4A output?

A .ts is a transport-stream container that carries the full video (often H.264 or MPEG-2 at 4-15 Mbps) plus the audio track. M4A discards the video entirely and keeps just the audio at ~128-256 kbps AAC. Expect output files in the 50-100 MB range per hour, down from 1-3 GB for the original TS — the savings come from dropping the video stream, not from re-compressing audio.

Does this re-encode the audio, or does it pass through the original AAC?

The xconvert pipeline re-encodes to AAC by default so the output is a clean, iTunes-compatible M4A regardless of what was in the source. If the TS already contains AAC and you want a bit-perfect demux without quality loss, set the Quality Preset to "Highest" or pick Constant Bitrate at 256-320 kbps — the difference from the original is inaudible. True passthrough requires command-line tools like FFmpeg with -c:a copy.

My TS has AC3 (Dolby Digital) audio. Can I still get M4A?

Yes. AC3 (and EAC3) are common audio codecs inside broadcast .ts files. The converter decodes the AC3 stream and re-encodes it as AAC inside the M4A container. You may lose surround channels if the source was 5.1 — by default the output is stereo unless you set Audio Channel explicitly. For multichannel preservation, AC3-in-M4A isn't standard; consider keeping the original or converting to MKV instead.

What's the difference between M4A and AAC?

AAC is the codec (the compression algorithm); M4A is the container (the file wrapper) holding an AAC stream plus metadata. An .aac file is the raw codec stream with no tags or chapters; .m4a adds iTunes-style metadata, album art, and is the format Apple uses everywhere. Most apps prefer M4A. If you specifically need raw AAC, use the TS to AAC converter.

Will iTunes / Apple Music recognize the converted M4A?

Yes — M4A is Apple's native audio format. Files import into Apple Music's library, sync to iPhone and iPod, and appear in the correct artist/album playlists. To add metadata (artist, album, artwork), use Apple Music's "Get Info" panel after import; the converter strips broadcast PSIP/EPG data from the TS source since it isn't compatible with iTunes-style tags.

Can I trim a long TS recording to just the song or scene I want?

Yes. In Advanced Options, open the Trim section and set a start time and duration. This is the fastest way to rip one song from a 2-hour concert capture or one segment from an all-night DVR session, without manually editing afterward. For more advanced cutting (multiple segments, fades), run the file through the Audio Cutter after conversion.

Should I pick Quality Preset or Constant Bitrate?

Quality Preset (VBR-style) gives you better audio per megabyte because the encoder uses more bits on complex passages and fewer on quiet ones — "Very High (Recommended)" is the safe default for music. Constant Bitrate is predictable and good for streaming or strict size targets; 192 kbps is the sweet spot for music, 128 kbps for talk content, 256 kbps to match Apple Music's streaming quality.

Can I convert multiple TS files in one batch?

Yes. Drag a folder of .ts recordings in and the converter processes them all with the same settings, then offers them as individual M4A downloads (or a ZIP archive). Settings such as bitrate, sample rate, and trim apply uniformly across the batch — if you need per-file settings, run them in separate sessions.

What if I want to keep the video too?

Then M4A isn't the right target — M4A is audio-only. Convert to TS to MP4 to keep both video and audio in a modern, widely supported container, or use Compress M4A afterward to shrink the audio file further once you have the M4A.