CONVERT
TS → AAC
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Fast, secure TS to AAC conversion. No registration required.
Situation. TS is the MPEG transport stream, used in broadcast and HLS streaming segments. Solution: a AAC, produced below. Need the audio of a TS file as a standalone AAC? Drop the video in and our FFmpeg pipeline demuxes the audio track, optionally re-encodes it to a lossy AAC for compatibility, and delivers a ready-to-use file. Nothing about the original video is uploaded anywhere else. Worth knowing: TS is the MPEG transport stream, used in broadcast and HLS streaming segments. Meanwhile AAC is the Advanced Audio Codec, more efficient than MP3 and ubiquitous in modern streaming.
MPEG Transport Stream
Source formatTS (Transport Stream) is used for broadcasting, streaming, and recording live TV.
AAC Audio
Target formatAAC is a lossy audio codec that delivers better sound quality than MP3 at similar bitrates. It is the default audio format for Apple Music, YouTube, and most streaming services.
Why convert TS to AAC
Audio players cannot read TS containers natively — they expect a AAC stream without the video wrapper. Extracting the audio upstream saves battery and CPU on the playback device because no dummy video decoding has to happen.
HOW TO CONVERT
TS → AAC
Provide your TS
Drag-and-drop a video up to 25 MB on the free tier; paid plans raise the ceiling substantially.
Extract the audio
We strip the video track, keep the audio ES and write it into a AAC file. Codec-compatible cases use stream-copy for bit-exact output.
Retrieve the AAC
A download link appears as soon as the extraction is done. Typical files finish in seconds.
Common Use Cases
Share across platforms
Send AAC files to anyone without worrying about whether they have the right software for TS.
Embed in documents
Drop AAC output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
AAC often produces smaller files than TS 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.
TS vs AAC — Strengths and limitations
What each format does best, and where it falls short.
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).
AAC Strengths
- Better quality than MP3 at equal bitrate — the industry standard since 2000s.
- Universally supported on every smartphone, OS, and browser.
- Efficient on battery thanks to widespread hardware decoding.
- Scales from 8 kbps speech (HE-AACv2) to lossy-transparent 320 kbps.
- Five-channel + LFE surround support out of the box.
Limitations
- Patent-encumbered — encoders have licensing fees, which is why open alternatives (Opus, Vorbis) exist.
- Slightly more complex to encode than MP3.
- Raw .aac streams carry no seek index — tooling often prefers M4A/MP4 containers.
TS vs AAC — Technical specifications
Side-by-side comparison of the technical details.
TS
- MIME type
- video/mp2t
- Extensions
- .ts, .m2ts, .mts
- Standard
- ISO/IEC 13818-1 (MPEG-2 Systems)
- Packet size
- 188 bytes (standard); 192 bytes (M2TS/Blu-ray)
- Primary use
- Broadcast TV + HLS streaming
AAC
- MIME type
- audio/aac
- Extensions
- .aac, .m4a, .mp4 (container-dependent)
- Standard
- ISO/IEC 14496-3
- Variants
- AAC-LC, HE-AAC, HE-AACv2, AAC-LD, xHE-AAC
- Sample rates
- 8-96 kHz
| Specification | TS | AAC |
|---|---|---|
| MIME type | video/mp2t | audio/aac |
| Extensions | .ts, .m2ts, .mts | .aac, .m4a, .mp4 (container-dependent) |
| Standard | ISO/IEC 13818-1 (MPEG-2 Systems) | ISO/IEC 14496-3 |
| Packet size | 188 bytes (standard); 192 bytes (M2TS/Blu-ray) | — |
| Primary use | Broadcast TV + HLS streaming | — |
| Variants | — | AAC-LC, HE-AAC, HE-AACv2, AAC-LD, xHE-AAC |
| Sample rates | — | 8-96 kHz |
TS vs AAC — Typical file sizes
Approximate file sizes for common scenarios.
TS
- HLS video segment (6 seconds, 1080p) 2-5 MB
- 1 hour recorded TV (HD) 4-8 GB
- Satellite transponder capture (1 min) ~300 MB
AAC
- Speech podcast (64 kbps) 1 MB/min
- 3-min music track (128 kbps) 3 MB
- 3-min music track (256 kbps) 6 MB
- Broadcast-quality 5.1 (384 kbps) 9 MB for 3 min
Quality & Compatibility
The perceptual quality of the AAC is bounded by the audio that was already inside the TS. Video containers often ship audio at 128-192 kbps; our conversion does not magically upgrade that, but it does preserve whatever was there without adding a second generation of lossy encoding when we can help it.
Tips for Best Results
- Use Advanced options to set a specific AAC bitrate when file size matters (e.g., sharing over chat apps).
- Tag your AAC output with an ID3 editor afterwards if you need searchable metadata and the source TS had none.
- When batch-extracting a folder of TS files, a single ZIP upload is faster than uploading one by one.
Frequently Asked Questions
Yes. The free tier accepts files up to 25 MB without registration, email capture or watermarks; paid plans go up to 2 GB. Paid plans raise the size cap, enable batch conversions and provide a REST API for automation, but nothing on the free tier is quality-limited — the output is exactly the same as on any paid plan.
Only if the audio codec inside TS is not directly writable into the AAC container. When codecs match we stream-copy, producing a bit-exact AAC. When they differ, we re-encode at a high-quality default, so the perceptual loss is tiny for anything other than lossless-to-lossless mismatches.
Uploads run over HTTPS, files are processed in isolated containers, and both the source TS and the AAC output are auto-deleted within two hours. No account is required, file contents are never logged, and KaijuConverter does not use uploads for AI training. The paid plan adds a signable data-processing agreement for regulated workflows.
No. The full TS lands in our processing container, we demux the audio locally and then the container is destroyed. The video bytes never leave KaijuConverter infrastructure and auto-delete within two hours along with the original file.
Most files finish in well under a minute. Small images and documents are typically ready in a few seconds; large video or audio files scale roughly with duration. Upload speed from your network is usually the dominant factor, not server time.
Yes. The Advanced options let you set start and end times in HH:MM:SS, so you can extract a single chapter, a specific quote or a clean sample instead of the full duration of the TS.
Related comparisons
See these formats side by side to understand which fits your use case best.
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Read guideSecure & Private Conversion
Your files are encrypted during transfer, processed in isolated containers, and automatically deleted within 60 minutes. We never read, share, or store your data.