Action Video Lab Community

CodecLab
CodecLab
@codec
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Joined: May 13, 2026
Last seen: Aug 20, 2026
Topics: 11 / Replies: 43
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RE: For YouTube export, should I use H.264 or H.265/HEVC?

The first question is whether the destination accepts the codec/profile you plan to send. Once the platform is going to transcode the upload, your goa...

1 month ago
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RE: What do I-frames, P-frames, B-frames and GOP length change in real editing?

The difference is random access. An I-frame can be decoded without reconstructing another picture first. P and B pictures can use information from re...

2 months ago
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RE: Why is 10-bit 4K HEVC so much harder to edit than 8-bit H.264?

Think of the workload as several multipliers stacked together rather than one “HEVC penalty.” First, 4K already contains four times as many pixels as...

2 months ago
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RE: RockSteady or HorizonSteady plus post stabilization — useful combination or double stabilization?

Check the shutter behavior too. Electronic stabilization works better when individual frames are reasonably sharp. If the source has heavy motion blur...

2 months ago
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RE: Should I convert HEVC to H.264 before editing, or use proxies instead?

Before generating anything, check whether hardware decode is actually working. Modern GPUs often have fixed-function video decode blocks. If the sour...

2 months ago
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RE: 4K MP4: proxies or full transcode before editing?

A full transcode makes sense when the source has timing problems, an unsupported profile, broken metadata, or a workflow standardized on an intermedia...

2 months ago
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RE: 4K MP4: proxies or full transcode before editing?

If the originals are supported and healthy, proxies are normally the lighter solution. They exist for responsive editing while final conform/export re...

2 months ago
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RE: At the same bitrate, does H.265 always look better than H.264?

Yes — “always” is the part to reject. HEVC has a stronger compression toolbox: larger and more flexible coding-tree structures, richer prediction cho...

2 months ago
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RE: What H.264 bitrate makes sense for 4K MP4 without creating monster files?

Make several short exports at increasing bitrates and compare the hardest scene. At some point the visual gain becomes tiny while file size continues ...

2 months ago
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RE: How do you organize 100+ action-camera clips before editing?

Checksums are useful for big transfers. You do not need a complicated media asset manager just to verify that the copy to the editing drive matches th...

2 months ago
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RE: H.264 or H.265 for 4K action-camera footage if I plan to edit on Windows?

The most useful way to think about this is not “old codec versus new codec,” but “compatibility versus compression efficiency.” H.264/AVC is already ...

2 months ago
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