ffmpeg library is too slow to compress the video file. Android [duplicate]

Question

I'm using ffmpeg library for video file compression in my Android project.

To implement ffmpeg I refereed this link, but ffmpeg is taking too much time just to compress the video (currently taking 1 min for 6 seconds video). I'm using below command for video compression--

ffmpeg -y -i /sdcard/videokit/in.mp4 -strict experimental -vf transpose=1 -s 160x120 -r 30 -aspect 4:3 -ab 48000 -ac 2 -ar 22050 -b 2097k /sdcard/videokit/out.mp4

Please let me know if it is possible to reduce compression time, may be by changing some setting or parameters in above command. Or is there any other way to compress the video faster than ffmpeg. Thank you.

Answer 1

There aren't many things you can do, but there are certainly a few things worth considering:

• you can set the -preset value to fast/veryfast/ultrafast
• you can set the -crf value (usually 18 to 28).
• The most important thing to note is that if you do not want to alter your audio/video codecs, you should retain the original settings using: -c copy (this can drastically improve the execution time, depending upon your use-case)

Refer this link for preset and crf settings