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TOPIC: Strange Quality Decline

Re: Strange Quality Decline 1 year, 5 months ago #122200

  • donkpow
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According to the manual, frame rate is set at 25 fps. As far as I can see, interlace is not an option. There are two basic rendering options; video in an avi container and image sequence.

What codec is being used for video export, please?

I haven't gone through the entire manual but I am wondering about interpolation in this software.

I'm assuming you have the paid version of Muvizu?

I would export in image sequence unless storage is a problem.
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Re: Strange Quality Decline 1 year, 5 months ago #122201

  • RWAV
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Are you using the 'Free for Evaluation' or licensed version of the animation software. This is the first time for LW with a running-time based visual error being reported - your animation software's forum/support pages seem to have multiple comments on poor image quality and some talk about which codecs/frame sizes are best to use in that software.
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Re: Strange Quality Decline 1 year, 5 months ago #122202

  • donkpow
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Looking at the Take12 image, resolution is 800x450. Is that how it was created?
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Re: Strange Quality Decline 1 year, 5 months ago #122203

  • donnerkebab42
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Yes, I have the apid version of the software.

I've screen shot the options that are available for MP4 output.

You can only change the codec if using AVI, which I'm not.

The image sequence seems extremely lengthy. I exported one scene in PNG sequence, it took 25 minutes and had over 3000 images. I'd rather explore a different option, if possible.

Yes, I haven't changed any settings in Muvizu, so 800x450 must be the standard.

I'm going through re-rendering & exporting in 1080x720, so far, so good...will see once I've added the dialogue and background music.

Thanks for all your help, will keep you posted.
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Re: Strange Quality Decline 1 year, 5 months ago #122205

  • donkpow
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Mp4 is not a good option for quality and further editing. If you insist on using that, raise the bit rate as high as possible.

Here is the frame with annotation. The white patches may be compression artifacts (from mp4 compression). The jagged edges are aliasing and can be compensated for to some degree in Lightworks. The arrows indicate letterboxing for non-standard resolution (size).

Thanks for the additional information. Much appreciated.
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Re: Strange Quality Decline 1 year, 5 months ago #122206

  • donnerkebab42
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Okie dokie.

I'll finish this edit and see how it looks. If it's still poor, I'll try again with a raised bitrate, the maximum is 20,000 would you recommend using that, or somewhere in between?

If I could take this home, I'd do the PNG images, but as this is work hours only, it limits my time to let things render and export.

Thanks for the help and guidance.

Re: Strange Quality Decline 1 year, 5 months ago #122211

  • donkpow
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I recommend you max out the bit rate. Bit rate is the amount of information contained in a stream. If you limit bitrate, you limit the amount of information, as a consequence, you limit quality.

The image sequence render draws a complete image for each video frame. 25 frames per second. All other encodes discard some information to meet compression settings.
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Re: Strange Quality Decline 1 year, 5 months ago #122229

  • donnerkebab42
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Hi folks,

I've re-rendered, exported & edited the movie at 1080x720 at the highest bitrate of 20,000 and here's the quality!

It's a hell of a difference!

Thank you so much for all your help. It's greatly appreciated!

P.S. On the next one, I'll try the PNG sequence first.
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Re: Strange Quality Decline 1 year, 5 months ago #122230

  • hugly
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