ffmpeg extract lossless image from video

Question

I have a 5s fps25 mp4 video and I use the following command to extract jpg images from the video

ffmpeg -i input.mp4 -r 1 -q:v 1 output_%01d.jpg

The images are extracted successfully, but jpg files quality isn't good enough.

How can I extract better quality images?

Solution

Try

ffmpeg -i input.mp4 -r 1 -q:v 1 -qmin 1 -qmax 1 output_%01d.jpg

If not good enough, use

ffmpeg -i input.mp4 -r 1 output_%01d.bmp 

and use another JPEG encoder.

Comments

[Rico]

try using value 2 instead of 1 in -qscale:v

[Android Developer]

i get error-"qmin and or qmax are invalid, they must be 0 < min <= max" using first command..i tried setting-"-qmin","0", "-qmax","1" but still same error..

[Gyan]

See updated cmd.