CODEWITHSUNDEEP
imageformatoutputavconv
piotr
piotr

Reputation: 1

Output format for a still image from avconv

I'd like to generate a still image from my video in mpeg to pipe, something like

avconv -ss 0:01 -i my.mpg -frames:v 1 -f jpeg -

However, avconv (ffmpeg) does not have jpeg among allowed output formats. There is no problem to specify format by output extension:

avconv -ss 0:01 -i my.mpg -frames:v 1 my.jpg; cat my.jpg

but I don't want to create redundant files. Any hint?

Upvotes: 0

Views: 256

Answers (1)

joelmukuthu
joelmukuthu

Reputation: 1

From the docs, you can pipe to stdout by setting the output filename as the pipe protocol, i.e. pipe:1. And though it's not stated explicitly, you can set the output format as a file extension, the same way you would for a normal filename:

avconv -ss 0:01 -i my.mpg -frames:v 1 pipe:1.jpg

Sidenote:

Note that some formats (typically MOV), require the output protocol to be seekable, so they will fail with the pipe output protocol

Upvotes: 0

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