Reddit reviews Neewer Acrylic Plastic 10x8"/25x20cm Director's Film Clapboard Cut Action Scene Clapper Board Slate with Color Sticks
We found 2 Reddit comments about Neewer Acrylic Plastic 10x8"/25x20cm Director's Film Clapboard Cut Action Scene Clapper Board Slate with Color Sticks. Here are the top ones, ranked by their Reddit score.
Organic(Acrylic) material and non-wood produced, easy to be written or cleaned.English version, beautiful and stable.Computer-graved and with printings non-lose.Built-in magnetic stripe, professional and resonant while being clapped.Clap-strip, special design and powerful enough to avoid crack.
You can get a nice slate and a sharpie for that.
That's what a "clap board" is for but you can also just have the subject in the video clap their hands. This gives a spike on the audio that we can use to sync so the person's hand clap and the spike match up. Usually this is close enough for speech so it looks like the persons lips are moving in sync with the audio.
Clap Board: https://www.amazon.ca/Neewer-Acrylic-Plastic-Directors-Clapboard/dp/B00S4QRBZY/ref=sr_1_1?ie=UTF8&qid=1459216178&sr=8-1&keywords=clap+board
Edit: If you are interested here is an explanation of the why's and how's of video / external audio sync.
https://www.youtube.com/watch?v=yZVNEo2dH9I