CODEWITHSUNDEEP
ffmpeg
Vahid Pazirandeh
Vahid Pazirandeh

Reputation: 1592

ffmpeg - does the position of the "-preset" option matter?

Does it matter where in the order of arguments I place the -preset option? Ex:

ffmpeg -i source.mp4 -c:v libx264 -b:v 1.5M -c:a aac -b:a 128k -preset fast target.mp4

vs.

ffmpeg -i source.mp4 -preset fast -c:v libx264 -b:v 1.5M -c:a aac -b:a 128k target.mp4

Upvotes: 1

Views: 446

Answers (1)

llogan
llogan

Reputation: 133873

There is no difference with your two commands. You are not using any additional options that conflict with -preset.

  • General option placement does matter. Anything before -i gets applied to the input. Anything after -i gets applied to the output. The documentation will tell you what options are for the input or the output only.

  • Order of output options can matter. The option listed last generally takes precedence. For example, the -map option can take advantage of placement order to select certain streams. Using -map 0 -map -0:a would select all streams from input 0, but then deselect all audio streams from input 0.

Upvotes: 1

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