Action Video Lab Community

AudioFix
AudioFix
@audiofix
Active Member
Joined: May 14, 2026
Last seen: Aug 14, 2026
Topics: 0 / Replies: 7
Reply
RE: Why did my trimmed MP4 become much larger than the original?

Most likely. File size is driven primarily by bitrate times duration, not by how simple the edit looks. A shorter export at 30 Mb/s can rival a longer...

2 months ago
Reply
RE: Mixed 24/30/60 fps MP4 project has judder after export — where should I start?

60 to 30 at normal speed is straightforward because frames can be sampled cleanly. 24 to 30 has a different cadence and can show judder in pans even w...

2 months ago
Reply
RE: Preview is perfect, but one animated overlay flickers only in the exported MP4

That is a useful diagnostic. GIF timing and project cadence do not always map neatly. Converting the animation to a normal video stream at the project...

3 months ago
Reply
RE: Why is seeking through an H.264 MP4 slow even when CPU usage is low?

Yes. Random access can require decoding from an earlier keyframe through dependent frames before the requested frame appears. That work can be serial/...

3 months ago
Reply
RE: Phone MP4 audio slowly drifts out of sync even though the clip starts perfectly

Then I would leave the AAC alone for the first test. Make one CFR copy while preserving 48 kHz audio, cut the same three points, and compare. Changing...

3 months ago
Reply
RE: Ghost frame appears between MP4 clips after export — frame-rate mismatch?

Switch interpolation temporarily to frame sampling and export the same cut. If the ghost disappears, you have isolated the cause.

4 months ago
Reply
RE: 4K60 MP4: H.264 or H.265 if I care more about editing speed than storage?

Often, because H.264 has extremely mature decode support, but it depends on the actual GPU. A modern machine with full HEVC hardware decode may handle...

4 months ago