TS to AAC — Format Comparison & Online Converter
Fast, instant TS to AAC conversion. No signup required. Just drop your .ts file and get .aac in seconds.
Batch Settings
Generation loss — quality may degrade
TS uses lossy compression, and so does AAC. Converting means decoding and re-encoding — each cycle can permanently degrade quality. Convert from the original source file whenever possible.
Some metadata may not survive
Your TS file may contain PSI/SI tables metadata. AAC has limited or no support for these metadata types. Location data (GPS), camera settings, and color profiles may be stripped during conversion.
What compression artifacts to expect
AAC lossy compression can produce pre-echo at low bitrates. At the high quality settings CocoConvert uses by default, these are usually invisible to the eye. Lower quality settings trade visual fidelity for smaller file sizes.
映像制作や配信の現場で頻繁に利用されるTSファイル。その高画質・高音質は魅力的ですが、スマートフォンでの再生やウェブサイトへの埋め込みなど、より汎用性の高い環境ではファイルサイズや互換性が課題となることも少なくありません。そこで、AAC形式への変換が役立ちます。AACは、MP3に比べて同程度の音質をより小さなファイルサイズで実現できるため、特にモバイル環境での視聴やデータ容量を抑えたい場合に最適です。この変換によって、お気に入りのアニメやドラマ、大切なビジネス会議の記録などを、場所を選ばずにスムーズに楽しむことが可能になります。品質を損なうことなく、より手軽にコンテンツを共有・再生したいとお考えの方に、私たちの変換ツールがきっとお役に立てるでしょう。
- アニメイベントのプロモーション動画
- ビジネス会議の音声記録を共有
- 同人作品の音声コンテンツ配信
日本国内では、特にCS放送の録画ファイルがTS形式であるため、これをスマートフォンなどで手軽に視聴するためにAAC変換が広く用いられています。また、高音質を保ちつつファイルサイズを抑えられる点は、通信環境が限られる場面でも重宝されます。
About TS to AAC Conversion
TS (introduced 1995) and AAC (introduced 1997) are both video formats, but they differ in important ways. TS (MPEG Transport Stream) is used in broadcast television and is segmented for streaming. AAC (Advanced Audio Coding) offers better quality than MP3 at the same bitrate — the default codec for Apple devices.
Full Name: TS uses MPEG Transport Stream, while AAC uses Advanced Audio Coding. Compression: TS uses Lossy, while AAC uses Lossy. Color Depth: TS uses 8-bit, while AAC uses —.
When you convert TS to AAC, the goal is to convert between formats quickly. TS uses lossy compression, and so does AAC. Converting means decoding and re-encoding — each cycle can permanently degrade quality. Convert from the original source file whenever possible. Understanding these technical differences helps you choose the right format for your workflow.
Your TS file is decoded and re-encoded as AAC. The conversion involves 4 steps: (1) your ts file is uploaded and the format is validated, (2) the file content is decoded into its raw representation, (3) the data is re-encoded in aac format with optimal settings, (4) the converted file is ready for download.
CocoConvert's converter handles the entire pipeline server-side using FFmpeg, Sharp, and qpdf — battle-tested libraries used by streaming platforms and enterprise tools. Files are encrypted in transit and deleted within 24 hours.
This conversion is ideal when you You need a file that works in web browsers. For the opposite direction, CocoConvert also supports AAC to TS conversion.
How to Convert TS to AAC
- 1
Upload .ts file
Select your TS file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.
- 2
Choose .aac
Set AAC as the output format. The converter uses optimal settings based on the TS→AAC conversion profile.
- 3
Convert
The server-side engine decodes your TS file and re-encodes it as AAC. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .aac file. Multiple output files can be downloaded together.
What Happens When You Convert TS to AAC
The audio track is extracted from your TS video file and saved as AAC. The video frames are discarded.
Your TS file is opened and the container is parsed to identify audio and video streams
The audio stream is extracted — if it's already in the target codec, it's copied directly (no quality loss)
If transcoding is needed, the audio is decoded and re-encoded as AAC
Video frames, subtitles, and chapter markers are discarded
The AAC file is saved with preserved metadata (title, artist, etc.) where possible
TS vs AAC — Detailed Comparison
| Feature | .TS | .AAC |
|---|---|---|
| Full Name | MPEG Transport Stream | Advanced Audio Coding |
| Compression | Lossy | Lossy |
| Color Depth | 8-bit | — |
| HDR Support | No | — |
| Typical File Size | 100–300 MB per minute | 1 MB per minute at 128 kbps |
| Platform Support | Very Wide | Very Wide |
| Browser Support | Limited | Universal |
| Year Created | 1995 | 1997 |
| Open Standard | Yes | Yes |
Should You Convert TS to AAC?
When to Convert
- ✓You need just the audio track from a video recording
- ✓You're creating a podcast or audio file from video content
- ✓You need a file that works in web browsers
When NOT to Convert
- ✗You're converting just because the file "seems old" — re-encoding lossy-to-lossy always degrades quality
Common Mistakes When Converting TS to AAC
"I'll convert to AAC and then back to TS — it'll be the same"
Each lossy conversion cycle permanently degrades quality. Going TS → AAC → TS will produce a noticeably worse file than the original. Always keep your source file.
Frequently Asked Questions
What is the difference between TS and AAC?
TS (MPEG Transport Stream) is used in broadcast television and is segmented for streaming. AAC (Advanced Audio Coding) offers better quality than MP3 at the same bitrate — the default codec for Apple devices. Full Name: TS uses MPEG Transport Stream, while AAC uses Advanced Audio Coding. Compression: TS uses Lossy, while AAC uses Lossy. Color Depth: TS uses 8-bit, while AAC uses —.
Does TS to AAC conversion affect quality?
TS uses lossy compression, and so does AAC. Converting means decoding and re-encoding — each cycle can permanently degrade quality. Convert from the original source file whenever possible.
Which format has better compression, TS or AAC?
TS uses lossy compression. AAC uses lossy compression. The better choice depends on whether you prioritize file size or quality.
How long does TS to AAC conversion take?
Most conversions finish in seconds. Larger files or complex video content may take 10–30 seconds. CocoConvert processes files in parallel for batch jobs.
Is TS or AAC better for long-term storage?
Both formats use lossy compression, so consider keeping your original source file for long-term storage.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.