Editing Questions - Action Video Lab Forum

4:3 action-camera footage for 16:9 and 9:16: one crop or two separate edits?

TrailCam — Mon, 17 Aug 2026 06:15:00 +0000

I increasingly shoot action footage in a taller 4:3 mode because it gives me more vertical room. The final deliverables are usually one 16:9 YouTube video and several 9:16 shorts. Is it better to make the 16:9 edit first and crop that timeline for vertical, or treat both outputs as separate reframing jobs from the original 4:3 source?

Should I convert HEVC to H.264 before editing, or use proxies instead?

TrailCam — Fri, 14 Aug 2026 15:20:00 +0000

A lot of tutorials say “convert H.265 to H.264 if your editor is slow.” That fixes playback, but it feels wasteful when I have hours of 4K footage. What is the better workflow: transcode all HEVC clips to H.264 first, or keep the HEVC originals and create proxies? I am especially interested in avoiding unnecessary quality loss.

4K MP4: proxies or full transcode before editing?

Alex R. — Fri, 14 Aug 2026 08:38:00 +0000

For a large batch of 4K MP4 files, should I generate proxies or transcode everything to an editing codec first? I want a smoother timeline but do not want to create a second huge full-resolution copy of the entire shoot.

How do you organize 100+ action-camera clips before editing?

RoadTrip — Fri, 14 Aug 2026 08:10:00 +0000

After a multi-day trip I can easily have more than a hundred action-camera clips, phone videos, GPS tracks and a few audio files. My current method is basically “copy everything into one folder and start watching,” which gets ugly fast. What folder structure actually survives a real edit, especially when the camera creates chaptered files and different devices reuse the same filenames?

How to Ask an Editing Question and Get a Useful Answer

AVL Editor — Tue, 11 Aug 2026 15:12:51 +0000

A good technical question can save hours of back-and-forth. You do not need to be an expert, but a few details make it much easier for other members to reproduce the problem and give a useful answer.

Include the source

Camera make and model
Resolution and frame rate
HDR, HLG, Log or standard profile
Whether telemetry/GPS is embedded or external
Whether the file was converted, remuxed or downloaded from another service

Include the editing environment

Editor name and version
Windows/macOS and basic hardware if performance is involved
GPU model when decoding, rendering or Vulkan/CUDA/OpenCL behavior is relevant
Any plugin or external telemetry utility used in the workflow

Describe what you expected and what actually happened

“GPS is broken” is difficult to diagnose. “The speed overlay is correct at the beginning but about four seconds late after ten minutes” immediately suggests a different class of problem than a constant four-second offset.

For color questions, describe whether the source looks wrong in the editor, only after export, or only after uploading to a platform. For performance questions, say whether the slowdown is decoding, scrubbing, effect preview, proxy generation or final rendering.

Preserve the original media

If metadata, HDR flags or unusual codecs are involved, keep the untouched source. A converted sample may remove the very information needed to diagnose the issue.

Use screenshots carefully

A screenshot of an error message is useful. A screenshot of a washed-out image is less useful without source/profile/export information. If you can legally share a short sample file, say so; do not upload private location data without checking what metadata it contains.

One problem per topic

If possible, keep one main technical issue per thread. A topic that simultaneously asks about GPS drift, HDR conversion, slow proxies and YouTube bitrate becomes difficult to answer and difficult for future readers to find.

Suggested title format: Camera + problem + editor. Example: “GoPro HERO13 GPS overlay drifts after trimming in ”.

Action Video Lab is intended to be a practical technical community. Clear problem reports help both the person asking and everyone who finds the topic later through search.

From 5.3K source to YouTube: export 1080p or 4K?

Creator Desk — Tue, 11 Aug 2026 10:05:00 +0000

If the camera source is 5.3K but the final destination is YouTube, is there a practical reason to export 4K instead of 1080p when most viewers will watch on phones or normal monitors? I understand that the extra source resolution is useful for cropping and stabilization. I am asking about the final master: quality versus render time, upload time and file size.

Free Windows editor for action-camera footage: VSDC, Resolve or Shotcut?

TrailCam — Sat, 08 Aug 2026 11:00:00 +0000

A friend asked me for a free Windows editor for action-camera footage, and I realized “free editor” is too broad a question. The files are mostly high-resolution HEVC, sometimes GPS overlays, and the laptop is mid-range rather than a workstation. The obvious names seem to be VSDC, DaVinci Resolve and Shotcut. How would you compare them for this specific use instead of just comparing feature lists?

Which editor is easiest for a GoPro + GPS + HDR travel workflow?

Edit Workflow — Wed, 05 Aug 2026 23:21:22 +0000

I am not looking for the editor with the most features overall. I want the shortest reliable workflow for action-camera footage: trim, stabilize if needed, use GPS overlays on selected shots, handle HDR correctly, add titles/music, export. Which editors should be on the shortlist?

Mixed 24/30/60 fps MP4 project has judder after export — where should I start?

RenderLab — Wed, 05 Aug 2026 17:04:00 +0000

I mixed 24, 30 and 60 fps MP4 clips on one timeline. Preview seems mostly okay, but some pans judder in the final. How should I choose the project frame rate?

OBS MP4 recording is in sync in a player but drifts after editing

LaptopEdit — Wed, 05 Aug 2026 14:17:00 +0000

A long OBS tutorial plays in sync outside the editor, but after I start cutting it the narration slowly shifts. What capture details should I inspect before blaming the NLE?