Pick the frame rate footage was shot at and the rate it will play back at, and get the new runtime and audio pitch shift, plus the same footage at every other common rate.
4.00% shorter than the original 1:30:00, and audio pitch shifts by +0.71 st.
| Played back at | New runtime | Speed change | Audio pitch |
|---|---|---|---|
| 23.976 fps | 1:30:05 | +0.10% | -0.02 st |
| 24 fps | 1:30:00 | No change | No shift |
| 25 fps | 1:26:24 | -4.00% | +0.71 st |
| 29.97 fps | 1:12:04 | -19.92% | +3.85 st |
| 30 fps | 1:12:00 | -20.00% | +3.86 st |
| 50 fps | 43:12 | -52.00% | +12.71 st |
| 59.94 fps | 36:02 | -59.96% | +15.85 st |
| 60 fps | 36:00 | -60.00% | +15.86 st |
This is a straight speed conform: the same frames, played at a new rate, which is how 24 to 25fps PAL conversions actually work. Non-matching integer ratios such as 24 to 30 usually use pulldown in real workflows instead, which repeats fields to keep the runtime the same rather than speeding playback up.
Pick the frame rate your footage was shot at and the rate it will play back at, plus the original runtime, and we calculate the new runtime and the audio pitch shift that comes with it.
A table shows the same footage at every common rate at once. This models a straight speed conform, the same frames played at a new rate, which is how a real 24 to 25fps PAL conversion works.
Non-matching ratios like 24 to 30fps usually use pulldown in real workflows instead, which repeats fields to keep runtime the same rather than speeding playback up. This tool models the straight speed conform, not pulldown.
No.
Speeding up or slowing down the same audio changes its pitch, the same effect as playing a record at the wrong speed. The semitone shift shown tells you how much.