MENCODER CHANGES!

[mersh]

Hi Admin,

I've got Mencoder working, and the command seems to be issuing correctly:

/usr/local/bin/mencoder /home/thewall_net/public_html/video/163.wmv -o /home/thewall_net/public_html/flvideo/163.flv -of lavf -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts vcodec=flv:vbitrate=700:mbd=2:mv0:trell:v4mv:cbp:last_pred=3 -srate 22050 -lavfopts i_certify_that_my_video_stream_does_not_use_b_frames

But I get the following error running it on the command line:

Option lavfopts: Unknown suboption i_certify_that_my_video_stream_does_not_use_b_frames
Error parsing option on the command line: -lavfopts

When I run the command without the offending suboption, I get a video that plays all the video very sped up, but the audio plays normally. Basically the video disappears and the audio keeps playing.

Any ideas? Thanks!

[mersh]

I just received this on the mencoder list:

> Diego recently committed some changes removing
> i_certify_that_my_video_stream_does_not_use_b_fram es (
> http://cia.vc/stats/author/diego/.message/248bd). My understanding is that
> bframes are now supported when using lavf.
> Not sure about number 2, but have you tried removing/changing some of the
> command line options and seeing if you can narrow down the problem. I would
> take a look at -ofps and -srate to start, but I'm no expert.


Didn't really help my problem, because as I noted, removing the option only creates a high-speed video. But I thought I'd post it as a heads-up to you.

[mersh]

Hey, I got the answer (at least for wmv files) from the mencoder maillist....

> If you add the framerate options with wmv, the problem gets resolved.
> -ofps 24
> Also, as previously stated it is no longer necessary to dd the
> -lavfopts i_certify_that_my_video_stream_does_not_use_b_fram es

So here's the command I issued, and it created a perfect WMV file:

/usr/local/bin/mencoder /home/thewall_net/public_html/video/163.wmv -o /home/thewall_net/public_html/flvideo/003.flv -of lavf -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts vcodec=flv:vbitrate=700:mbd=2:mv0:trell:v4mv:cbp:last_pred=3 -srate 22050 -ofps 24

[leki]

is this some very new version of mencoder?

do all other file types convert ok though using that command?

[admin]

What version you are using ?

I tried the command and got

# /usr/bin/mencoder 1.wmv -o 1.flv -of lavf -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts vcodec=flv:vbitrate=700:mbd=2:mv0:trell:v4mv:cbp:last_pred=3 -srate 22050 -ofps 24
MEncoder 1.0rc1-3.4.6 (C) 2000-2006 MPlayer Team
CPU: Intel(R) Core(TM)2 CPU          6420  @ 2.13GHz (Family: 6, Model: 15, Stepping: 6)
CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
success: format: 0  data: 0x0 - 0xf49f0
ASF file format detected.
VIDEO:  [WMV1]  320x240  24bpp  30.000 fps    0.0 kbps ( 0.0 kbyte/s)
[V] filefmt:6  fourcc:0x31564D57  size:320x240  fps:30.00  ftime:=0.0333
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 32000 Hz, 2 ch, s16le, 32.0 kbit/3.12% (ratio: 4000->128000)
Selected audio codec: [ffwmav2] afm: ffmpeg (DivX audio v2 (FFmpeg))
==========================================================================
** MUXER_LAVF *****************************************************************
If you wish to use libavformat muxing, you must ensure that your video stream
does not contain B frames (out of order decoding) and specify:
    -lavfopts i_certify_that_my_video_stream_does_not_use_b_frames
on the command line.
REMEMBER: MEncoder's libavformat muxing is presently broken and will generate
INCORRECT files in the presence of B frames. Moreover, due to bugs MPlayer
will play these INCORRECT files as if nothing were wrong!
*******************************************************************************
Cannot initialize muxer.
Exiting...
#

I am using MEncoder 1.0rc1-3.4.6

[Manic-Video]

I had problems uploading videos and converting also.

I changed the line
$cmd_mencoder = "$config[mencoder] '$video_src' -o $video_flv -of lavf -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts vcodec=flv:vbitrate=500:mbd=2:mv0:trell:v4mv:cbp:l ast_pred=3 -srate 22050 -lavfopts i_certify_that_my_video_stream_does_not_use_b_fram es";

to

$cmd_mencoder = "$config[mencoder] '$video_src' -o $video_flv -of lavf -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts vcodec=flv:vbitrate=500:mbd=2:mv0:trell:v4mv:cbp:l ast_pred=3 -srate 22050 -ofps 24";

in /includes/settings/video_conversion.php

Now all seems to be working well.

I am using
MEncoder dev-SVN-r24115-3.4.6 (C) 2000-2007 MPlayer Team


So if your having trouble uploading/converting check to see if you are using a newer version of mplayer and if so try this fix.

[browniegirl]

I did this and got this ERROR:

ERROR: Unable to execute query

INSERT INTO `process_queue` SET
file='x.wmv',
title ='x Web Cam',
description='Here a',
keywords='web cam',
channels='23',
type='public',
user='xE',
user_ip='----',
status=2

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'll', keywords='web cam', channels='23', type='public', user='xE' at line 4

[admin]

browniegirl, PM me your web site FTP, cpanel, vshare admin and a test user login details, i can check why you get this error. When you send PM, include url of this thread.