AVI to FLV using mencoder

Riotblade · Member Joined: 20 Dec 2007 Location: United States

I'm on Ubuntu trying to convert a lot of AVI files to FLV files so I can put it on my flash player for streaming. However, things are successful about 80% of the time. A lot of times there are out of sync files that are exactly the same as the other files in the series. These are the options I use:

-of lavf -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts vcodec=flv:vbitrate=500:mbd=2:mv0:trell:v4mv:cbp:last_pred=3 -vf scale=440:330 -srate 22050 -mc 0 -noskip

Anyone happen to know a better way of doing them? This problem had hounded me for a long time.

Thanks

45tripp · Dolphin Blue Joined: 21 Dec 2004 Location: Triptonia

Riotblade · Member Joined: 20 Dec 2007 Location: United States

So with an AVI source I shouldn't use those two options?

Also, yes, i'm using the latest version of mencoder.

I'm currently having problems with a lot of my videos.

45tripp · Dolphin Blue Joined: 21 Dec 2004 Location: Triptonia

in general you shouldn't use them until you have to use them,
and if they fail, you've probably got a nasty.

if you've got something horrible,
i wouldn't mind looking at a sample

gl

Riotblade · Member Joined: 20 Dec 2007 Location: United States

I updated my mencoder to 1.0rc2-4.1.3 and i'm making 2 samples. One with -mc 0 -noskip and one without. I'll let you take a look at them when i'm done.

This is an conversion of episode 2 of the Naruto anime. If you can diagnose what's wrong with it, please let me know.

Thanks

45tripp · Dolphin Blue Joined: 21 Dec 2004 Location: Triptonia

samples of output are not really helpful,
a source sample is almost always what is required,
so someone can try to sucessfully do what you can't, or re-produce the problem, or...
also, a sample should ideally be a smaller size,
as small as possible, but of course you must be able to reproduce the result with the sample.

but looking at the files, I see sync is lost just past midpoint,
so it would still be a large sample...,
and I think you should drop noskip and mc 0 and try:

Riotblade · Member Joined: 20 Dec 2007 Location: United States

Thanks for the answer. I've actually have been playing with ffmpeg prior to reading this topic but the quality I've been getting was always more blocky. I've also tried with the command you gave me in hopes that it'll work better but the quality is still more choppy than when it was encoded with mencoder. I had to knock up the bitrate in order to match the quality except the output for ffmpeg output was still more blocky. When I say blocky, I mean you literally see squares in the background.

I've tried this with many videos of mine but they all end up the same. Here are two examples I've made. One is 500k and the other is 800k.

[Links Removed]

Sorry but I've removed the previous videos I put up before so I hope you still have them so you can compare and understand what I'm talking about. I have yet to try the -vf harddup option with mencoder so I'll give that a go tomorrow.

Thanks

ricardouk · Member Joined: 15 Mar 2005 Location: PORTUGAL

I only use Ubuntu "part time" but it seems the last Avidemux version creates flv's. Its not "command-line" but you'll never know
_________________
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Ricardo Santos

45tripp · Dolphin Blue Joined: 21 Dec 2004 Location: Triptonia

bayme · hero Joined: 10 Nov 2007 Location: EU

mrcoolekin · Member Joined: 31 Jul 2003

Alright it look me a few hours to get this to you cause I was fixing a lot of bugs in my coding. Don't ask me what they are cause I just took the same configurations I used for my psp encodes but took out a few things. I did take a few of your ideas and put them in also. I am using ffmpeg v9133. You may need to change the coding if you're using anything more recent.

bayme · hero Joined: 10 Nov 2007 Location: EU