The default audio renderer in MPC-HC, when coupled with standard decoders (e.g., MPEG-1/2 Audio Layer III), resamples audio by dropping or repeating samples. This naive approach changes both playback speed and pitch according to the formula:
| Method | Mechanism | Latency | Quality | |--------|-----------|---------|---------| | Internal Audio Renderer (with “Use time stretching”) | Simple WSOLA-like | Low | Medium | | LAV Audio Decoder + “Tempo” adjustment | SoundTouch library (high-quality WSOLA) | Medium | High | mpc hc speed up without pitch
For a speed factor of 1.5×, pitch increases by a musical fifth (~7 semitones), distorting dialogue and music. The default audio renderer in MPC-HC, when coupled
To speed up video in without the high-pitched "chipmunk" effect, you must switch your audio renderer to the MPC Audio Renderer . This renderer includes a time-stretching feature that maintains original audio pitch even at accelerated speeds. Step-by-Step Configuration The default audio renderer in MPC-HC
