<p>If you are going for a lot of motion, make sure you set a higher I frame rate. An I frame is a whole frame that you are going to need with quick motion.</p>

<p>Also, check out this link <a href="http://www.adobe.com/devnet/flash/apps/flv_bitrate_calculator.html" rel="nofollow">http://www.adobe.com/devnet/flash/apps/flv_bitrate_calculator.html</a> for some basic settings. That shows you that 150kb/s is way to slow to keep a good picture. For SD material, bitraters of around 500kb/s with fast motion is recommended.</p>

CC BY-SA 3.0
2012-03-15T20:01:15.577Z
This question seems more broadcast and compression specific than AV Production! Inviting experts to a new site proposal [Broadcast and Media Technologies](http://area51.stackexchange.com/proposals/36807/broadcast-and-media-technologies) which aims to capture more architectural and theoretical views around subjects like this. Join and invite others.
Dipan Mehta
CC BY-SA 3.0
2012-01-08T19:15:54.640Z
2012-01-08T19:15:54.640Z
WesleyE
<p>It also depends a lot on your target platform. High Profile will compress better than Main Profile, but not all devices can decode High Profile with large frame sizes. A few cannot decode High Profile at all. </p>

<p>I have had considerable success encoding motor racing in SD (852x480, actually) at 768kbps using High Profile. Even though you have a quarter the frame size, I suspect 150kpbs is extremely optimistic.</p>

CC BY-SA 3.0
2012-03-15T20:01:20.707Z
This question seems more broadcast and compression specific than AV Production! Inviting experts to a new site proposal [Broadcast and Media Technologies](http://area51.stackexchange.com/proposals/36807/broadcast-and-media-technologies) which aims to capture more architectural and theoretical views around subjects like this. Join and invite others.
Dipan Mehta
CC BY-SA 3.0
2012-02-08T03:27:33.127Z
2012-02-08T03:27:33.127Z
staticsan
<p>It is generally impossible to say what settings will produce the best output for a given situation, without simply trying various settings.  Most encoders (I have never used Flash Media Live Encoder specifically) have quite a number of settings that can be tweaked within a specific bitrate, frame rate, and frame size that will affect the final result.  Some settings will have better results for some types of video than others.</p>

<p>My best advice, without knowing anything about your specific software, is to try various settings and compare the results.  You may wish to encode the same 10-30 second clib (probably with a lot of movement in it, since that's one of your main concerns) with various settings, and compare the results.</p>

<p>Another thing I might suggest is lowering your audio bitrate so you have a little bit more video bandwidth.  Although whether that's a good idea may also depend a lot on what your audio stream is like.  If it's a music video, then you probably want to guard your audio bandwidth very jealously.  If it's an interview (unlikely since you're talking about a lot of movement, but who knows?) then you can probably get away with pretty low audio bandwidth.</p>

CC BY-SA 3.0
2011-11-03T10:12:28.123Z
2011-11-03T10:12:28.123Z
Flimzy
<p>I'm looking to stream some video from Flash Media Live Encoder with a video bitrate of around 150 Kbit/sec and audio of 50 Kbit/sec. The video will contain quite a lot of movement which I want to try and represent as faithfully as possible. Is there a particular flavour of H.264 that I could use to optimise the results at a resolution of 384x216 i.e. which profile?</p>

<p>Thanks</p>

CC BY-SA 3.0
2012-03-15T19:58:59.090Z
This question seems more broadcast and compression specific than AV Production! There is a new site proposal [Broadcast and Media Technologies](http://area51.stackexchange.com/proposals/36807/broadcast-and-media-technologies) which aims to capture more architectural and theoretical views around subjects like this. Join and invite others.
Dipan Mehta
CC BY-SA 3.0
2012-05-14T14:09:08.457Z
What kind of videomaterial is it?
DoktorHauser
CC BY-SA 3.0
2011-07-20T05:33:28.513Z
I've never used that program but from the sounds of it, you've specified the codec, resolution and bit rate that you have/want to use, but aren't happy with the result? Don't think you can do much if you are set on those parameters...
Richard
<streaming><codec>
Best H.264 settings for low bit-rate streaming video
MSR
# Best H.264 settings for low bit-rate streaming video

(Asked by: username_0 on 2011-07-15)

I'm looking to stream some video from Flash Media Live Encoder with a video bitrate of around 150 Kbit/sec and audio of 50 Kbit/sec. The video will contain quite a lot of movement which I want to try and represent as faithfully as possible. Is there a particular flavour of H.264 that I could use to optimise the results at a resolution of 384x216 i.e. which profile?

Thanks

**Tags:** streaming, codec

> **Comments:**
> **username_3**: I've never used that program but from the sounds of it, you've specified the codec, resolution and bit rate that you have/want to use, but aren't happy with the result? Don't think you can do much if you are set on those parameters...  
> **username_1**: This question seems more broadcast and compression specific than AV Production! There is a new site proposal [Broadcast and Media Technologies](http://area51.stackexchange.com/proposals/36807/broadcast-and-media-technologies) which aims to capture more architectural and theoretical views around subjects like this. Join and invite others.  
> **username_2**: What kind of videomaterial is it?  

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## 3 answers

### Answer by username_4 on 2012-01-08. Score: 1

If you are going for a lot of motion, make sure you set a higher I frame rate. An I frame is a whole frame that you are going to need with quick motion.

Also, check out this link <http://www.adobe.com/devnet/flash/apps/flv_bitrate_calculator.html> for some basic settings. That shows you that 150kb/s is way to slow to keep a good picture. For SD material, bitraters of around 500kb/s with fast motion is recommended.

> **Comments:**
> **username_1**: This question seems more broadcast and compression specific than AV Production! Inviting experts to a new site proposal [Broadcast and Media Technologies](http://area51.stackexchange.com/proposals/36807/broadcast-and-media-technologies) which aims to capture more architectural and theoretical views around subjects like this. Join and invite others.  

---

### Answer by username_5 on 2012-02-08. Score: 1

It also depends a lot on your target platform. High Profile will compress better than Main Profile, but not all devices can decode High Profile with large frame sizes. A few cannot decode High Profile at all.

I have had considerable success encoding motor racing in SD (852x480, actually) at 768kbps using High Profile. Even though you have a quarter the frame size, I suspect 150kpbs is extremely optimistic.

> **Comments:**
> **username_1**: This question seems more broadcast and compression specific than AV Production! Inviting experts to a new site proposal [Broadcast and Media Technologies](http://area51.stackexchange.com/proposals/36807/broadcast-and-media-technologies) which aims to capture more architectural and theoretical views around subjects like this. Join and invite others.  

---

### Answer by username_6 on 2011-11-03. Score: 0

It is generally impossible to say what settings will produce the best output for a given situation, without simply trying various settings. Most encoders (I have never used Flash Media Live Encoder specifically) have quite a number of settings that can be tweaked within a specific bitrate, frame rate, and frame size that will affect the final result. Some settings will have better results for some types of video than others.

My best advice, without knowing anything about your specific software, is to try various settings and compare the results. You may wish to encode the same 10-30 second clib (probably with a lot of movement in it, since that's one of your main concerns) with various settings, and compare the results.

Another thing I might suggest is lowering your audio bitrate so you have a little bit more video bandwidth. Although whether that's a good idea may also depend a lot on what your audio stream is like. If it's a music video, then you probably want to guard your audio bandwidth very jealously. If it's an interview (unlikely since you're talking about a lot of movement, but who knows?) then you can probably get away with pretty low audio bandwidth.


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