QCP Audio File Format
Readableaudio
QCP is a storage format for exchanging Qualcomm Code Excited Linear Prediction (QCELP 13k) encoded audio data, as well as Enhanced Variable Rate Codec (EVRC) and Selectable Mode Vocoders (SMV) data.
Identify it
| Extensions | .qcp |
|---|---|
| MIME types | audio/qcelpaudio/vnd.qcelp |
| Signatures | 52494646 at byte 0 (QCP Audio) |
| PRONOM | fmt/962 |
| Wikidata | Q7265393 |
Not sure your file is this? Identify it from its first bytes, in your browser.
Open it
Convert it
| To | With | Fidelity | Command and losses |
|---|---|---|---|
| FLAC (Free Lossless Audio Codec) 1.2.1 | FFmpeg | Lossless | ffmpeg -i in.qcp out.flacLossless for decoded audio; a lossy source stays as degraded as it was. WAV may reduce bit depth or drop metadata. |
| Waveform Audio | FFmpeg | Lossless | ffmpeg -i in.qcp out.wavLossless for decoded audio; a lossy source stays as degraded as it was. WAV may reduce bit depth or drop metadata. |
| Matroska 1-4 | FFmpeg | Lossy | ffmpeg -i in.qcp out.mkvRe-encoded with lossy codecs by default; try `-c copy` to remux without re-encoding when the codecs fit the container. |
| MPEG 1/2 Audio Layer 3 | FFmpeg | Lossy | ffmpeg -i in.qcp out.mp3Lossy re-encoding. |
| MPEG-4 Part 14 | FFmpeg | Lossy | ffmpeg -i in.qcp out.mp4Re-encoded with lossy codecs by default; try `-c copy` to remux without re-encoding when the codecs fit the container. |
| Ogg | FFmpeg | Lossy | ffmpeg -i in.qcp out.oggLossy re-encoding. |
| WebM | FFmpeg | Lossy | ffmpeg -i in.qcp out.webmRe-encoded with lossy codecs by default; try `-c copy` to remux without re-encoding when the codecs fit the container. |
Sources
From Converters (FFmpeg, ImageMagick, Pandoc, LibreOffice), Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.