Lightroom: exporting vertical videos produces black bars and poor resolution

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  • Problem
  • Updated 7 years ago
The video transcoder doesn't handle videos in vertical format very well. I have vertical videos from an iPhone (1080x1920) and iPod touch (480x640). Both play fine within Lightroom, but when I try to transcode them on export, Lightroom does two undesirable things:

  1. It always produces videos in one of the standard horizontal formats (4:3 or 16:9), adding large black bars on the side.

  2. It selects a horizontal output resolution (including black bars) that is smaller than the original width (without the bars). This unnecessarily limits the resolution



Whereas (1) could be 'by design' - although I wouldn't understand why one would enforce horizontal formats - (2) is surely a bug. The result is that LR insists on converting the iPhone video to 640x480 (with a 270x480 picture size; 4x smaller than the original) and the iPod video to 320x216 (with a 162x216 picture size; 3x smaller). This is when I select the 'maximum' quality level for H.264 export.

Observed on: Lightroom 4.1, Windows 7 Professional.
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SimonT

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Posted 7 years ago

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SimonT

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Let me further qualify the image resolution problem. If we would want to squeeze the iPhone video into a horizontal container it should allow a 1920x1080 frame with a 608x1080 picture size.

This would result in a 1.8x size reduction instead of 4x. Of course, it's even better to simply use a vertical 1080x1920 frame.