Your video looks perfect on your computer, but in the live Zoom webinar, it looks wrong.
The motion might stutter, jump, or freeze. The picture might go soft, blurry, or pixelated. Or the file itself might glitch and refuse to play cleanly.
These symptoms look alike but trace back to different causes, and each has its own fix. The first step is telling which one you've got.
First, which problem do you have?
Play back a recording of your event, or watch it live, and ask yourself which of these matches what you see. The team's quick diagnostic question is: "Is your video mainly talking-head, full-screen on-camera video, or mainly PowerPoint and slides?"
(A) The motion is jumpy, choppy, or jittery. Movement stutters, skips, or drops frames, and it's most noticeable on full-motion, talking-head, or on-camera footage. The picture might look fine when it's still but falls apart the moment things move. Go to Fix A.
(B) The motion is fine, but the picture is blurry, soft, or pixelated. Movement looks smooth, but everything is a little fuzzy or low-resolution, like it's not as sharp as your source file. Go to Fix B.
(C) The video file itself seems broken. Audio is out of sync, the file is corrupt, it won't play cleanly anywhere, or it's an enormous raw export. Go to the re-encoding section at the bottom.
Fix A: Switch from Screenshare to HD High Motion Video
This is the fix for jumpy or choppy motion on high-motion, talking-head video.
Why does this happen? AEvent can play your video into Zoom two ways.
Screenshare (also called "Default" or "Desktop Share") uses a variable frame rate that's tuned for slides and static content. It's great for a PowerPoint deck, but it can't keep up with full-motion video, so fast movement comes out jittery, jumpy, or choppy. HD High Motion Video (also called "HD Camera" or "Zoom HD") sends a steady camera-style feed at about 30 frames per second, up to 1080p, which stays smooth through motion.
If your presentation is mostly on-camera or full-screen video and the motion is stuttering, you're almost certainly on Screenshare. Switch to HD High Motion Video.
How to switch:
1. Open the timeline you're working with.
2. Select Integrations and open the Settings for your Zoom integration.
3. Turn on "HD High Motion Video."
4. Click Save.
One caveat: HD isn't automatically better for everything. If your content is mostly slides, spreadsheets, or fine text, Screenshare at 1080p can actually look sharper than the HD camera feed. Don't switch a detailed slide deck to HD just because it says "HD." Match the method to the content.
Also note: switching this setting isn't retroactive. It only affects newly-scheduled events. Existing events have to be changed manually.
For the full HD setup, including how to set your Zoom account's HD level, see Zoom HD High Motion Video.
Fix B: Blurry or soft video (set your Zoom HD level)
This is the fix for video that plays smoothly but looks blurry, soft, or pixelated.
If you've already turned on HD High Motion Video and the motion is smooth but the picture still looks fuzzy, the cause is usually your Zoom account's HD video setting. Even with HD on in AEvent, Zoom controls the resolution it sends to your attendees, so if your account is set to a lower level the feed can still look soft.
In your Zoom account settings, under your Webinar settings, find HD Video Quality. It has two levels: Standard HD (720p) and Full HD (1080p). Which one you can use depends on your Zoom plan: 720p is available on Pro plans and higher, and 1080p requires a Business, Education, or Enterprise account, or a Pro account with a Zoom Events or Zoom Webinars Plus license. If you don't see the Full HD option, contact Zoom Support to have it enabled for your account.
The full walkthrough for setting your HD level in Zoom and verifying it took effect is in Zoom HD High Motion Video.
When re-encoding the file IS the answer
Sometimes the problem really is the video file, not the delivery method or the Zoom resolution. If your file is a bad or raw export, the audio drifts out of sync, is corrupt, or is an enormous uncompressed file, re-encoding it to a clean, standard format usually clears things up.
A quick way to tell this apart from a delivery-method issue: if the video looks wrong everywhere, including on your own computer before it ever reaches Zoom, the file is the likely culprit. If it looks fine on your machine and only gets jumpy inside the Zoom webinar, that points back to Fix A instead.
To re-encode, see Compressing Video with Handbrake and Fix a Bad Webinar Video File.