Video Conversion

Convert TS to AMR: Free Online Converter

Convert MPEG Transport Stream to Adaptive Multi-Rate Audio online for free. Fast, secure video conversion with no watermarks or registration.

163,370件のファイルを変換済み

ファイルを選択

またはページ内の任意の場所にドラッグ＆ドロップ

TSに対応

アップロードすることで、これらのファイルの権利を有していること、および利用規約に同意することを確認したものとみなされます。

転送時に暗号化

変換設定: ファイルを追加すると調整できます

Trim Start

Format: HH:MM:SS (leave empty to start from beginning)

Trim End

Format: HH:MM:SS (leave empty to keep until end)

Volume

0100%200

0% = silent, 100% = original, 200% = double loudness

Fade In

00s10

Gradually fade the audio in over this many seconds

Fade Out

00s10

Gradually fade the audio out over the final seconds

Bitrate

Leave as-is for the encoder default (VBR where supported); pick a rate to force it.

Audio Channels

Reverse Audio

Play audio backwards

Strip Metadata

Remove EXIF data, GPS, camera info

安全な転送

HTTPS暗号化アップロード

プライバシー優先

ゲストのファイルは約2時間で自動削除

登録不要

すぐに変換を開始

どこでも動作

あらゆるブラウザ、あらゆるデバイス

変換成功率をリアルタイムで見る

TSからAMRへの変換について詳しく見る

TS から AMR への設定

エンジン

メディア

設定

調整できる設定: 9

Trim Start
Trim End
Volume
Fade In
Fade Out
Bitrate
Audio Channels
Reverse Audio
Strip Metadata

変換方法

アップロードエリアにドラッグするか、クリックして選択し、.tsファイルをアップロードしてください。

必要に応じて出力設定を調整してください。デフォルト設定ではオリジナルの品質を維持します。

「変換」をクリックし、準備ができたら.amrファイルをダウンロードしてください。

TSからAMRへの変換について

MPEG Transport Stream recordings carry broadcast-quality audio encoded at high bitrates within error-resilient packet structures. Converting TS to AMR (Adaptive Multi-Rate) compresses the audio into the ultra-efficient narrowband codec designed for GSM cellular voice: producing files that are incredibly small at the cost of reduced audio bandwidth (300-3400 Hz frequency range).

TSをAMRに変換する理由

AMR is the standard voice codec for GSM and 3G networks worldwide. Converting broadcast audio to AMR is useful when you need to create voice messages, phone system recordings, or ringtones from TV captures. AMR files are tiny — a minute of audio takes only about 100 KB at 12.2 kbps — making them ideal for extreme bandwidth constraints.

主な活用例

Creating voice clips from TV news broadcasts for phone-based distribution
Extracting speech segments from recorded broadcasts for telephony IVR systems
Making ringtones from TV theme songs for legacy phones that only support AMR
Sending broadcast audio clips via MMS where file size limits are tight
Building voice sample databases from archived broadcast speech recordings

仕組み

The converter demuxes the TS container, decodes the broadcast audio (MPEG-2 Audio or AC3) to PCM, resamples from 48 kHz to 8 kHz mono (AMR-NB requirement), and encodes using the AMR-NB codec at the selected bitrate mode (4.75-12.2 kbps). The output uses the .amr container with the standard AMR header (#!AMR\n). The dramatic sample rate reduction from 48 kHz stereo to 8 kHz mono accounts for most of the file size savings.

品質とパフォーマンス

AMR-NB is a speech-optimized codec with a narrow 300-3400 Hz frequency band. Music, sound effects, and ambient audio will sound heavily degraded — like a phone call. Speech remains intelligible at all bitrate modes, but sounds noticeably compressed compared to the broadcast source. This format is purpose-built for voice, not music.

Media EngineModerateMinimal Quality Loss

デバイス互換性

Device	TS	AMR
Windows PC	Partial	Partial
macOS	Partial	Partial
iPhone/iPad	Partial	Partial
Android	Partial	Partial
Linux	Partial	Partial
Web Browser	No	No

プラットフォーム別の推奨設定

YouTube

Resolution: 1920x1080

Bitrate: 8-12 Mbps

H.264 recommended for fast processing

Instagram

Resolution: 1080x1080

Bitrate: 3.5 Mbps

Square or 9:16 for Reels

TikTok

Resolution: 1080x1920

Bitrate: 4 Mbps

9:16 vertical, under 60s ideal

Twitter/X

Resolution: 1280x720

Bitrate: 5 Mbps

Under 140s, 512MB max

Resolution: 960x540

Bitrate: 2 Mbps

16MB limit for standard, 64MB for document

Discord

Resolution: 1280x720

Bitrate: 4 Mbps

8MB free, 50MB Nitro

最良の結果を得るためのヒント

1Only use AMR for speech-heavy content — music and sound effects will sound terrible at 8 kHz mono
2Choose 12.2 kbps for the clearest speech reproduction the format allows
3Trim the TS recording to only the speech segment you need before converting to minimize processing time
4Consider AAC at 64 kbps as a modern alternative — it sounds much better and is equally small on modern devices
5Test AMR playback on your target device first — some modern smartphones have dropped AMR support in favor of AAC

TSとAMRの比較

特徴	TS	AMR
正式名称	MPEG Transport Stream	Adaptive Multi-Rate Audio
拡張子	.ts	.amr

よくある質問

AMR-NB only captures frequencies between 300-3400 Hz — the range of human speech on a telephone. All bass below 300 Hz and detail above 3400 Hz is removed, giving it the characteristic telephone sound.

No — AMR-NB is strictly mono at 8 kHz sample rate. Stereo broadcast audio is automatically downmixed to mono during conversion.

Use 12.2 kbps (mode 7) for the best speech quality. Use 4.75 kbps (mode 0) for the smallest possible file size. The quality difference is noticeable — lower modes introduce more artifacts.

Our converter uses AMR-NB (narrowband) by default. AMR-WB extends the frequency range to 50-7000 Hz and sounds significantly better, but has less universal device support.

Extremely small. A 1-hour TS recording (4-8 GB with video) produces an AMR file of only about 5-7 MB at 12.2 kbps, or as little as 2 MB at 4.75 kbps.

You can, but the result will be poor. AMR discards frequencies that music depends on (bass, high harmonics). Use AAC or MP3 instead for music content.

他の形式をAMRに変換

FLAC to AMR MP3 to AMR MPEG to AMR Opus to AMR