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On different hardware how do they synchronize the playback speed? Each device has very different processing environment, so I cant imagine it would be easy to e
by maerF0x0 5y ago
On different hardware how do they synchronize the playback speed? Each device has very different processing environment, so I cant imagine it would be easy to ensure that exact of playback speed. eg maybe one is playing 30 frames per second, and the other is playing 29.85 ...
- snovv_crash 5y agoDouble or drop the occasional frame I guess? Audio is easier to stretch because it is stored as frequency components already.
- ComputerGuru 5y agoAudio is easier to stretch but audio should also never be stretched because we are extremely perceptive to it in a way that we aren’t with our visual processing abilities. Video should always be kept in sync with audio and not the other way around. You can freely drop or repeat video frames (within the boundaries of reason) without anyone being able to detect it in a blind test, but audio should not be messed with. This is why when syncing audio and video from different sources during production, the master clock is always the audio.
- snovv_crash 5y agoVideo conferencing already does massive audio compression (>2x speedup) to compensate for temporarily dropped connections. 30.5s of audio delivered over 30s isn't noticeable if you keep the frequencies the same, which is more than adequate for multiple people watching a movie together.