4
2
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?
Chito Cheng
Posted 2016-01-28T11:41:35.020
Reputation: 175
6
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.
Gyan
Posted 2016-01-28T11:41:35.020
Reputation: 21 016
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.. – Android Developer – 2018-12-08T10:27:45.763
See updated cmd. – Gyan – 2018-12-08T10:49:17.310
try using value 2 instead of 1 in -qscale:v – Rico – 2016-01-28T11:59:07.430