bit rate help

thebrain900 wrote on 5/10/2011, 1:00 PM

I have a video Q/A about MP4 H246

If I am going to encode to this and I want the most compresson but keep good video the net tells me a lot of diferant things.

One place says don't go Lower then 1,000 bits per sec.

One place says 600,000 bits per sec what is the Lowest and have good video

Comments

musicvid10 wrote on 5/10/2011, 1:10 PM

It depends on a lot of things; pixel dimensions and motion detail are two of the biggest. If you want to learn about h264 at low bitrates, have a look here:
http://www.jazzythedog.com/testing/DNxHD/HD-Guide.aspx#LBR

thebrain900 wrote on 5/10/2011, 2:05 PM

Ok this is the thing.

I am going to take video that has no fast action or FX in it.
And keep it at standard resalotion.

So I think 1,000 bits per sec would be ok.
And the net says you can go as Low as 500 bits per sec

I just want the most compresson but good video and it is hard to findout

amendegw wrote on 5/10/2011, 2:40 PM

The actual lowest bitrate depends on many things - including the encoding software (Handbrake is really good!), the display dimensions (i.e. 1920x1080 vs 640x360), the motion in the video, whether you have transitions, etc.

Check this out for 200kbps: http://www.jazzythedog.com/testing/lowbitrate.htm

Read more about the subject here: http://www.sonycreativesoftware.com/forums/ShowMessage.asp?ForumID=4&MessageID=752907

Good Luck!
...Jerry

MSmart wrote on 5/11/2011, 9:26 AM

On what will you be watching your encoded video? A mobile device?

While you can read up on the subject to get an idea of what bitrate is recommended, the only way to know for sure is to render your video using different bitrates and watching it on the device you intend it for. When you start noticing that the picture quality is not to your liking, you've reached the low bitrate point and you'll know you need to stay above that.

Trial and error is the only way you'll know for sure. Recommendations will just get you to a stating point.