Text quality (credits etc) in h264

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Text quality (credits etc) in h264

Mike Martin-2
Are there any tips to maintain the quality of text in output files.
For example credits or slides in zoom videos.

Using crf 22 the video is fine, except for text on the screen (not
sub-titles)

thanks

Mike
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Re: Text quality (credits etc) in h264

kumowoon1025
Hi,
> Are there any tips to maintain the quality of text in output files.
> For example credits or slides in zoom videos.

If mostly static text, or maybe for the credits, low constant motion, is most of the video content, I think multi-pass encoding would be beneficial.
Or if you do not care about bitrate or filesize that much, you could keep lowering crf or set higher constant or target bitrate.
Hard to recommend starting points without knowing pixel format for crf, and also dimensions for bitrate.

Regards,
Ted Park

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Re: Text quality (credits etc) in h264

Mike Martin-2
On Thu, 28 May 2020 at 11:17, Edward Park <[hidden email]> wrote:

> Hi,
> > Are there any tips to maintain the quality of text in output files.
> > For example credits or slides in zoom videos.
>
> If mostly static text, or maybe for the credits, low constant motion, is
> most of the video content, I think multi-pass encoding would be beneficial.
> Or if you do not care about bitrate or filesize that much, you could keep
> lowering crf or set higher constant or target bitrate.
> Hard to recommend starting points without knowing pixel format for crf,
> and also dimensions for bitrate.
>
> Regards,
> Ted Park
>
> Using default values. It seems to be an issue when the video is resized.
Normally I encode to a size of width 352 keeping aspect ratio, encoding to
704 is better, but obviously far bigger files
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Re: Text quality (credits etc) in h264

kumowoon1025
Hi,
> Normally I encode to a size of width 352 keeping aspect ratio, encoding to
> 704 is better, but obviously far bigger files

How many characters to fit in the frame? Those numbers are like something on my old gameboy... If increasing the width from 352 to 704 pixels is too expensive file-size wise, that means every 100kB matters, right? Is using the text itself not an option?

Regards,
Ted Park

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