diff --git a/index.html b/index.html index 0a13701..235dae4 100644 --- a/index.html +++ b/index.html @@ -153,9 +153,12 @@

In order to use the same basic command to make a higher quality file, you can add some of these presets:

ffmpeg -i input_file -c:v libx264 -pix_fmt yuv420p -preset veryslow -crf 18 -c:a copy output_file

-
-preset veryslow
This option tells ffmpeg to use the slowest preset possible for the best compression quality.
-
-crf 18
Specifying a lower CRF will make a larger file with better visual quality. 18 is often considered a “visually lossless” compression.
+
-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.
+
-crf 18
Specifying a lower CRF will make a larger file with better visual quality. The scale ranges between 0-51, 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.

@@ -821,7 +824,7 @@

Simpler GIF creation

ffmpeg -ss HH:MM:SS -i input_file -vf "fps=10,scale=500:-1" -t 3 -loop 6 output_file

-

This is a quick and easy method. Dithering is more apparent than the above method using the palette* filters, but the file size will be smaller. Perfect for that “legacy” GIF look.

+

This is a quick and easy method. Dithering is more apparent than the above method using the palette filters, but the file size will be smaller. Perfect for that “legacy” GIF look.