Trying to convert from flv to mp4 (for iPod) using mencoder.

alkos333 · 11-02-2007, 02:32 AM

I used the latest 1.0rc2 MPlayer script from SlackBuilds.org. I also have a faac package installed from SBo as well.

Here's the command I'm running to convert the flv file into an mp4 and the output I get:

Code:

me@alkos333_TPT60:~/testing$ mencoder Unleashing\ Video\ Search.flv -oac lavc -lavcopts acodec=aac:aglobal=1:vglobal=1:abitrate=128 -ovc lavc -lavcopts vcodec=mpeg4:mbd=2:v>
MEncoder 1.0rc2-4.1.2 (C) 2000-2007 MPlayer Team
CPU: Genuine Intel(R) CPU           T2500  @ 2.00GHz (Family: 6, Model: 14, Stepping: 8)
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 - 0x7e47ac9
libavformat file format detected.
[lavf] Video stream found, -vid 0
[lavf] Audio stream found, -aid 1
VIDEO:  [FLV1]  320x240  0bpp  29.917 fps    0.0 kbps ( 0.0 kbyte/s)
[V] filefmt:44  fourcc:0x31564C46  size:320x240  fps:29.92  ftime:=0.0334
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
AUDIO: 22050 Hz, 2 ch, s16le, 8.0 kbit/1.13% (ratio: 1000->88200)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
==========================================================================
** MUXER_LAVF *****************************************************************
REMEMBER: MEncoder's libavformat muxing is presently broken and can generate
INCORRECT files in the presence of B frames. Moreover, due to bugs MPlayer
will play these INCORRECT files as if nothing were wrong!
*******************************************************************************
OK, exit
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
Opening video filter: [scale w=320 h=-11]
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffflv] vfm: ffmpeg (FFmpeg Flash video)
==========================================================================
Audio LAVC, couldn't find encoder for codec aac.

Exiting...
me@alkos333_TPT60:~/testing$

H_TeXMeX_H · 11-02-2007, 05:51 AM

Have you tried using 'ffmpeg' for the conversion instead ? I've found mencoder to produce horrible results for converting most things.

samael26 · 11-02-2007, 06:10 AM

ffmpeg works without a cinch.

BCarey · 11-02-2007, 11:31 AM

I think you need to use -faacopts not -lavcopts to use the aac codec.
Brian

BCarey · 11-02-2007, 11:45 AM

Quote:

Originally Posted by H_TeXMeX_H

I've found mencoder to produce horrible results for converting most things.

Please don't throw out sweeping comments like that without at least giving some examples. mencoder works very well for many things. It even uses ffmpeg codecs (among others) as well, so if you are converting with the same codecs and the same settings I don't see how the quality would be different.

Brian

H_TeXMeX_H · 11-02-2007, 12:14 PM

It's different because it's harder to get the settings right ... if not impossible ?

alkos333 · 11-03-2007, 02:36 PM

Quote:

Originally Posted by BCarey

I think you need to use -faacopts not -lavcopts to use the aac codec.
Brian

I tried it - it didn't work.