: Click Apply and OK , then restart the player for the changes to take effect. Control Playback Speed : Increase Rate : Press Ctrl + Up Arrow . Decrease Rate : Press Ctrl + Down Arrow . Reset Rate : Press Ctrl + R . Optimizing for Smooth Speed Adjustments
In the dropdown menu, select MPC Audio Renderer (also referred to as "Internal Audio Renderer" in some versions).
By default, the buttons and hotkeys in MPC-HC change the playback speed in large increments of 2x (e.g., from 1.0x directly to 2.0x, then to 4.0x), which is often too aggressive. You can change the increment step for precise control:
| Action | Shortcut | Notes | | :--- | :--- | :--- | | Increase speed (preset) | Ctrl + Up | Does NOT preserve pitch by default. | | Decrease speed (preset) | Ctrl + Down | Does NOT preserve pitch. | | Reset to 1.0x speed | Ctrl + * (Numpad) | Also resets pitch. | | | Ctrl + Shift + S | The only way to preserve pitch. | | Speed up by 10% (custom) | No default. Use Set Speed dialog. | N/A | mpc hc speed up without pitch
Select at the very bottom of the drop-down menu (or press O on your keyboard). 2. Configure the Audio Renderer
However, the "Chipmunk Effect"—the high-pitched, distorted audio caused by simply playing media faster—is a dealbreaker. No one wants to listen to a professor who sounds like they've inhaled helium.
For speeds up to 1.5x, the audio is essentially indistinguishable from normal playback. Between 1.5x and 2.0x, you may notice a slight "smoothness" or reverb if you listen critically. Above 2.5x, comprehension becomes difficult regardless of pitch correction. : Click Apply and OK , then restart
Most free players use low-quality "linear" interpolation. MPC-HC, however, offers professional-grade algorithms.
This usually happens when the speed increase is too aggressive for the default processor. Ensure you have enabled in the Internal Filters settings as described above. Additionally, try to keep the speed under 2.0x for the best balance between time-saving and audio clarity.
: Playing at very high speeds (e.g., 4x or higher) requires significant CPU power. If the audio begins to stutter or the video lags, your hardware may be struggling to decode the frames fast enough. Reset Rate : Press Ctrl + R
How to Speed Up MPC-HC Playback Without Changing Audio Pitch To speed up video playback in Media Player Classic - Home Cinema (MPC-HC)
Audio and video go out of sync at high speeds. Solution: This usually happens with variable frame rate (VFR) videos (common with screen recordings). Remux the file as constant frame rate (CFR) using MKVToolNix or HandBrake . Or, use the "Resample audio to match video" option in Audio Switcher without the external renderer.