![]() ![]() I can't seem to find any way to actually permanently sync up the audio with the video. The audio has been 2.2 seconds off from the video ever since it was imported to my PC. Even if you don't shoot the "B-roll" during the main presentation.I have a video I recorded on my phone in 2017 of my daughter meeting with a princess in the hospital. It is always good to get some "audience reaction" shots to cover edit points. We typically use "B-roll" (PowerPoint slides, presentation video, audience shots, etc.) to cover edit and/or sync points. But if there was more drift during the clip, you may have to divide your video into sections and "pull-up" the video to match the audio at several points. If you are lucky, the audio will be in sync through the entire length of the recording. Then go to the end and drag the length of the video clip so that the audio is in sync at the end. Start by syncing the beginning of the video/audio together. Only YOU can do that experiment with YOUR video and audio and editing system. But they will certainly complain about lousy audio if you try to "tweak" the length.īut try it for yourself on your own software and see how it works for yourself. Many editing applications do pretty horrible things to the audio track if you try to lengthen or shorten the clip slightly.īut doing the same thing to the video track will result only in a dropped or duplicated frame every few seconds, and almost nobody viewing your video will notice that. And even then they are "jam-synced" together several times a day.ĭepending on which editing software you are using, you will very likely find it much more acceptable to use the audio track as the "master reference" and "pull-up" the video to match the audio. (This was called "genlock".) And in more modern times, pro gear uses internal (or external) reference clocks that cost more than your whole camcorder and phone combined. For most of the history of shooting film and video, professionals actually connected the camera clock and the audio recorder clock together with a hard wire. The issue is that the internal clock references in mass-market consumer gadgets like your camcorder and your phone are not precise enough to stay in lip-sync for more than a few minutes. For example, clearly there is no "frame-rate" or even "sample-rate" setting on a typical smart phone. Most modern editing software (or file-manipulation software) is capable of easily resolving sample-rate or frame-rate issues. Scan type, store method : Separated fieldsĪudio file info (it is longer because it covers the whole session) Our recording equipment is a Canon Legria R68 and an Android (Moto G 3rd gen) mobile phone for the video and audio, respectively. Is this our problem, editing program's limitations, the medium, file formats.?Īny hint on improving our workflow would be appreciated. I have wondered whether this is due to different bitrates, but adjusting the speed does not seem to help. Basically, when I import both the video and audio into Lightworks (or some other software), I can align the waveforms but they drift from each other. I post the Mediainfo data of the video and audio below. My problem is that they both seem out of sync when seen from within the editing progams. Both are relatively new an the camera indeed does nice full HD video. ![]() We recorded a video of a talk and its audio on separate devices (camcorder and phone).
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