Resizing vids with ffmpeg

ffmpeg is bundled in the Studio flavor. I’m trying to reduce the file size of this 222 MB video. I successfully changed it to 5 MB by reducing the frame rate from 30 fps to 20 fps. My problem however is that the video is now pixelated. Gaaaarrrr.

Here’s what i did:

ffmpeg -i part3.avi -r 20 part320.mp4

I didn’t intentionally change the resolution. What happened?

Advertisements

3 thoughts on “Resizing vids with ffmpeg

  1. Now, I’m learning!

    “The parameter ‘q’ which is displayed while encoding is the current quantizer. The value 1 indicates that a very good quality could be achieved. The value 31 indicates the worst quality. If q=31 appears too often, it means that the encoder cannot compress enough to meet your bitrate. You must either increase the bitrate, decrease the frame rate or decrease the frame size.”

    from: http://www.ffmpeg.org/ffmpeg-doc.html

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s