From 7453e500df2feda548f8bf7d9cb05fc5d6948716 Mon Sep 17 00:00:00 2001 From: Reto Kromer Date: Mon, 18 Feb 2019 07:23:35 +0100 Subject: [PATCH] complete information --- index.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/index.html b/index.html index 01f080d..b144fcc 100644 --- a/index.html +++ b/index.html @@ -314,7 +314,7 @@
-preset veryslow
This option tells FFmpeg to use the slowest preset possible for the best compression quality.
Available presets, from slowest to fastest, are: veryslow, slower, slow, medium, fast, faster, veryfast, superfast, ultrafast.
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-crf 18
Specifying a lower CRF will make a larger file with better visual quality. For H.264 files being encoded with a 4:2:0 chroma subsampling scheme (i.e., using -pix_fmt yuv420p), the scale ranges between 0-51, with 0 being lossless and 51 the worst possible quality.
+
-crf 18
Specifying a lower CRF will make a larger file with better visual quality. For H.264 files being encoded with a 4:2:0 chroma subsampling scheme (i.e., using -pix_fmt yuv420p), the scale ranges between 0-51 for 8-bit content, with 0 being lossless and 51 the worst possible quality.
If no crf is specified, libx264 will use a default value of 23. 18 is often considered a “visually lossless” compression.

For more information, see the FFmpeg and H.264 Encoding Guide on the FFmpeg wiki.