[MEncoder-users] Mencoder and FLV (Flash video)

[RyES RyES]

Thanks everyone for your help,

It turned out that the fourcc didn't work.  It worked in mplayer, but now in 
the actual flash player.  What did fix things is "-of lavf", which I should 
have played with more since Guillaume mentioned it to me before.  Plus it 
would only work on pre7, not the latest CVS, so I hope it works later.

I have 1 other question, is there *any* way to get a jpg thumbnail using 
mencoder?  You can do it in ffmpeg with -f image -img jpeg, but there seems 
to be no way with mencoder.  Man, just need this final thing to really get 
rid of using a seperate ffmpeg.exe.

I ended up finalizing on these commands, any comments on improvements on the 
commands appreciated:
// Fast/Low quality
mencoder 1.avi -o 2.flv -of lavf -ovc lavc -oac lavc -lavcopts 
vcodec=flv:vbitrate=250:autoaspect:acodec=mp3:abitrate=56 -vf scale=320:240 
-srate 22050 -af lavcresample=22050 -endpos 02:00

// x3 Slower/High quality
mencoder 1.avi -o 2.flv -of lavf -ovc lavc -oac lavc -lavcopts 
vcodec=flv:vbitrate=250:autoaspect:mbd=2:mv0:trell:v4mv:cbp:last_pred=3:predia=2:dia=2:precmp=2:cmp=2:subcmp=2:preme=2:turbo:acodec=mp3:abitrate=56 
-vf scale=320:240 -srate 22050 -af lavcresample=22050 -endpos 02:00

Guillaume, so the $100 goes to you.  Sorry RC, but I am sure Guillaume will 
probably donate it too.  Guillaume you can email me privately if you need 
the money or want it donated.  If donated, is there an email I should paypal 
it too?  The donation email address seems to be removed now.

Thanks all,
Ryan


>From: Guillaume POIRIER <poirierg at gmail.com>
>Reply-To: Guillaume POIRIER <poirierg at gmail.com>,MEncoder usage discussions 
><mencoder-users at mplayerhq.hu>
>To: MEncoder usage discussions <mencoder-users at mplayerhq.hu>
>Subject: Re: [MEncoder-users] Mencoder and FLV (Flash video)
>Date: Mon, 26 Sep 2005 09:11:41 +0200
>
>Hi,
>
>On 9/26/05, RyES RyES <ryes540 at hotmail.com> wrote:
> > Hello everyone, I'm new to the list but have been using Mencoder for 
>some
> > time now.  Guillaume mentioned to me that flv encoding should work in
> > mencoder now.  Right now I have mencoder output to mjpeg and then 
>convert to
> > flv with ffmpeg, which sucks.
> >
> > As noted in the latest DOCs
> > (http://mplayerhq.hu/DOCS/HTML/en/menc-feat-enc-libavcodec.html), flv is 
>now
> > a supported libavcodec codec.  Unfortunately I could not get it to work 
>at
> > all.
>
>
>Nice to see that someone is reading the docs :-)
>
>
> > But in mencoder nothing works, this is one of the commands I tried, I 
>tried
> > hundreds of variations:
> > mencoder 1.avi -o 2.flv -ovc lavc -lavcopts
> > vcodec=flv:acodec=mp3:abitrate=56 -srate 22050
> > Something comes out, but nothing plays correctly.
> >
> > You can get a flv player here:
> > http://www.martijndevisser.com/archives/000021.php
> >
> > I already donated $100 to mplayer when the server died, but since this 
>is
> > important for my company, I will donate another $100 to mplayer or pay 
>the
> > person that gives me the working command.  The person can choose if they
> > want the money or if they want it donated in their name.  I must be 
>about to
> > repro it on my computer.
>
>As RC said, a command line such as:
>
>mencoder 1.avi -o 2.flv -ovc lavc -lavcopts
>vcodec=flv:acodec=mp3:abitrate=56 -srate 22050 -ffourcc FLV1 -of lavf
>-o1.flv
>
>should work all right.... but it would be quite sub-optimal (lavc
>audio encoder are not too good), and may lead to A/V desync. You
>probably should dump the audio track as PCM and use lame to encode it,
>and later remux it back together using the 'audiofile and -oac copy'
>options.
>
>Last but not least, make sure you have libavformat in order to be able
>to mux to Flash format:
>
>FFmpeg libavcodec/libavutil/libavformat
>
>CVS MPlayer is not fully functional without a copy of the libavcodec,
>libavformat and libavutil libraries from FFmpeg. Get FFmpeg CVS via
>
>   cvs -d:pserver:anonymous at mplayerhq.hu:/cvsroot/ffmpeg login
>   cvs -z3 -d:pserver:anonymous at mplayerhq.hu:/cvsroot/ffmpeg co -P ffmpeg
>
>When asked for a password, just hit enter. A directory named ffmpeg
>will be created. Copy the libavcodec, libavformat and libavutil
>subdirectories into the main directory just created from the MPlayer
>checkout.
>
>In order to include libavcodec and libavutil in CVS updates, add the
>following lines to main/CVS/Entries:
>
>   D/libavcodec////
>   D/libavformat////
>   D/libavutil////
>
>
>Best regards,
>Guillaume
>--
>Reading doesn't hurt, really!
>  -- Dominik 'Rathann' Mierzejewski
>
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