It's an audio player/converter but it'll also play the audio inside common video containers (MKV/MP4/AVI etc). If I'm going to run a ReplayGain scan I generally do it using foobar2000. Some software players might, but I'd be astounded if any hardware players do. The ReplayGain info can also be saved to tags in the audio/video files and in theory the player should read them and adjust the volume on playback so there's no need to re-encode it, but unfortunately I don't know of any video players which support ReplayGain tags. once you've run a ReplayGain scan on the audio you'll probably need to re-encode it while adjusting the volume accordingly. the peaks are above 0db using lossy audio but as I said they're not actually "clipped".Īnyway. A few db of "clipping" is no big deal though. It'll also tell you if adjusting the volume according to the ReplayGain result will cause "clipping". The ReplayGain scan result should also tell you if the peaks are greater than 0db (lossy audio can contain peaks above 0db so while they're louder they're not actually clipped in the audio file itself). Ideally you'd probably want to use 83db or 84db for video soundtrack audio as it tends to have a little more dynamic range than "music" tracks. Most programs capable of ReplayGain scanning are designed to scan music files and base the result on a "target volume" of 89db. It works pretty well for stereo tracks but I haven't used it on multichannel audio myself.
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