Re: [Flashcoders] filmmering FLV playback - why and how to fix that

[Latcho]

No software problem: - Near def. encoding problem or source vid encoding 
problem
get back to the source vid and reencode or try other vids with your 
existing script to elliminate problems.



Jason Van Cleave wrote:

was the original quicktime h.264? this format used to trip up squeeze and
may have the same effect with the flash encoder. I would first try to export
the file as uncompressed and reencode it to see if you are having the same
issues

On Thu, Jul 3, 2008 at 10:36 AM, Andrew Murphy [EMAIL PROTECTED] wrote:

  

I can't see all of the details of how the video is encoded (FLV MetaData
Viewer has a bug that keeps it from displaying some .flv file's data) but
this is what I can see in FLV Player:



Dimensions:  694 x 440
Framerate: 25fps

Audio codec ID: 2 (which means it's an MP3)
Audio datarate:  96 kbits/s
(also the audio sounds stereo to me...)

Video codec ID: 4 (which means it's On2 VP6)
Video datarate:  400 kbits/s



The main issue that's likely causing the stuttering is the constant
motion
throught the frame area.  In my own video work I've been able to reduce
that
by bumping up the keyframe rate, but that of course will increase the file
size and probably the workload on someone's CPU when it's played.

I'd experiment with reducing the frame rate to something like 15 fps, give
it a keyframe rate of one every 5 frames, convert the audio to mono and try
tweaking the datarates of the video and the audio to get a good balance of
visual quality and CPU bandwidth use.  If your encoder software lets you
set
how many passes it makes during video encoding you can set it to use two
passes, which can improve visual quality at lower video datarates.

I hope that helps... ^_^




(ps:  That's a delightful looking home. :D)




Andrew Murphy
Interactive Media Specialist
[EMAIL PROTECTED]

Delvinia
214 King Street West, Suite 214
Toronto Canada M5H 3S6

P 416.364.1455 ext. 232  F 416.364.9830  W www.delvinia.com

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-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Paul
Andrews
Sent: Thursday, July 03, 2008 9:38 AM
To: Flash Coders List
Subject: Re: [Flashcoders] filmmering FLV playback - why and how to fix
that

It's not that bad. I think the fact that there are a lot of hard edes and
contiuous movement that any faults are more obvious.

The stuttering was occuring as the video was playing and the file had not
yet fully loaded (though was not halted to fill the buffer).

The strange lines you mention appear to be the video player trying to keep
up with the display.

Despite all this, I think the quality isn't too bad.

I'd try out a few variations on the encoding to see if that helps.

I don't think I've ever tried to play such a large video on my laptop
before. My last video project was 200x150.

Paul



- Original Message -
From: Martin Klasson [EMAIL PROTECTED]
To: Flash Coders List flashcoders@chattyfig.figleaf.com
Sent: Thursday, July 03, 2008 2:00 PM
Subject: Re: [Flashcoders] filmmering FLV playback - why and how to fix
that


I used 400kbit on a 694x440 movie, with 96kbps audio in stereo, on2vp6.
frame rate same as source, and automatic keyframes.

How does it stutter, as it is buffering and than resumes - or does the
video
has strange lines appearing like it
the video doesnt perform well.

I think it is very strange, and I cant understand that I havent heard about
this issue before!


2008/7/3 Paul Andrews [EMAIL PROTECTED]:



What settings did you give the encoder - maybe your bitrate is too high.
It
certainly stutters on my machine. Maybe you have too many keyframes.

Paul
- Original Message - From: Martin Klasson [EMAIL PROTECTED]

To: Flash Coders List flashcoders@chattyfig.figleaf.com
Sent: Thursday, July 03, 2008 1:03 PM
Subject: [Flashcoders] filmmering FLV playback - why and how to fix that


 I got a quicktime which I have encoded to on2vp6-file with Flash Video
  

Encoder,
but the flv that is being played is having some flimmering results, as
can
be seen here:
http://www.bjorkelangenpark.no/innredning.html


The quicktime is not having this issue, I dont know how to solve this.


Do


you?

Thanks, Martin
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RE: [Flashcoders] Netstream fails to close

[Barry Hannah]

It's mentioned by plenty of people here:
http://livedocs.adobe.com/flash/mx2004/main_7_2/wwhelp/wwhimpl/common/ht
ml/wwhelp.htm?context=Flash_MX_2004file=1594.html

here:
http://www.experts-exchange.com/Software/Photos_Graphics/Web_Graphics/Ma
cromedia_Flash/Q_23515050.html

here:
http://forum.lighttpd.net/topic/72358

none of which have answers that work.

I could cast the sound onto a separate object and mute it, so that you
don't see or hear any ill effects, but my proxy tells me the flv is
still downloading, so if one of my clients users clicks on 10 video
clips their connection will crawl to a halt.

Anyone?


-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Steven
Sacks
Sent: Sunday, 6 July 2008 9:41 a.m.
To: Flash Coders List
Subject: Re: [Flashcoders] Netstream fails to close

The only bug with NetStream that I know of is if you're spamming it with

new streams too quickly.  The solution is to throttle the requests.

A safe time to wait between changing the streams is 250ms.

It's really simple to write a queueing system that does this.  You just 
overwrite the same variable and reset the timer.

var currentStream:String;
var timer:Timer = new Timer(250, 1);
timer.addEventListener(TimerEvent.TIMER, onTimerEvent);

function queueNewStream(value:String):void
{
currentStream = value;
timer.reset();
timer.start();
}

function onTimerEvent(event:Event):void
{
netStream.pause();
netStream.close();
netStream.load(currentStream);
}
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