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| zdf |
| Posted: Aug 6 2014, 01:33 PM |
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Newbie
Group: Members
Posts: 1
Member No.: 38204
Joined: 6-August 14
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I am trying to make a time-lapse video.
- The resolution of pictures is 2304/1536.
- There are about 3500 pictures (~1.3GB).
- I have cropped the pictures to 2304/1296 (16:9).
- The frame rate is set to 24 (8 times faster).
- Compressor: Xvid.
If I try to maintain the quality, the output is much too large (3.5GB, at least).
If I try to reduce the size, the quality is not satisfactory.
I don’t know a thing about compression/video, but common sense tells me that the output should be smaller than the total size of the pictures and the quality must be the same.
Thank you.
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| dloneranger |
| Posted: Aug 6 2014, 02:19 PM |
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Moderator
Group: Moderators
Posts: 2366
Member No.: 22158
Joined: 26-September 07
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Video and still compression have different tasks and are designed differently
Still compression is all about smallest size/best quality
Video compression has to trade off for frame rate and cpu usage + it's designed to be compressing a series of pictures that are pretty similar to each other
It would help if you'd given the settings you used - without them, I'll just have to guess at a starting point
-> tbh I'd use x264vfw instead of xvid for that size video frames
XVid suggested starting settings
Profile: unrestricted
Encoding type: single pass
Target quantizer: 4
Zone options button-> tick these: begin with keyframe, chroma optimizer enabled -> click ok
Quality preset 'more' button -> motion search precision 6, vhq mode 4, tick use vhq for bframes too, use chroma motion ->click ok
Try that and change the target quantizer to adjust the file size
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