Re: [FFmpeg-user] Text quality (credits etc) in h264

2020-05-29 Thread Edward Park
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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Re: [FFmpeg-user] Text quality (credits etc) in h264

2020-05-28 Thread Mike Martin
On Thu, 28 May 2020 at 11:17, Edward Park  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: [FFmpeg-user] Text quality (credits etc) in h264

2020-05-28 Thread Edward Park
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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