[MEncoder-users] Mencoder not copying aac to mp4

[Renato Zippert]

Ops... My mistake... Wrong command, but even using "-of lavf" and "-lavfopts
format=mp4" it doesn't copy the audio but accepts reencoding it. (but
anyway, shouldn't avi be able to handle aac?)

When I force with the -fafmttag I get:

[mp4 @ 0x1e09230]Codec for stream 0 does not use global headers but
> container format requires global headers
>
[mp4 @ 0x1e09230]Codec for stream 1 does not use global headers but
> container format requires global headers
>

I'm able to play the files on MPlayer itself but not on my cell phone...

Actually, I found this on MPlayer's documentation:

As you can see, libavformat allows MEncoder to mux into a considerable
> variety of containers. Unfortunately, as MEncoder was not designed from the
> beginning to support container formats other than AVI, your should really be
> paranoid about the resulting file. Please check to be sure that the
> audio/video synchronization is OK and that the file can be played correctly
> by players other than MPlayer.




As a solution I've used mencoder to just encode the video and separate apps
to extract the audio and mux into a mp4 format (and worked perfectly).

Att,



Renato Rodrigues Zippert


2011/7/25 Bill Crockett <wsc4 at optusnet.com.au>

> > The problem is that I don't understand the reason for this error:
>
> Is this the error?: WARNING: OUTPUT FILE FORMAT IS _AVI_. See -of help.
>
> Then use:  -of lavf
>
> It'll automatically use the container extension.  You can also use:   -of
> lavf -lavfopts format=mp4
>
>
> > Also I don't know how to use the -fafmttag to force aac...
>
> For AAC, use this:   -fafmttag 0x706d
>
> Cheers,
>
> Bill
>
> _______________________________________________
> MEncoder-users mailing list
> MEncoder-users at mplayerhq.hu
> https://lists.mplayerhq.hu/mailman/listinfo/mencoder-users
>
Good afternoon...

I was trying to find a faster/better scriptable way to hardsub some files I
have than using avidemux and then ffmpeg, so I'm trying mencoder. The
problem is that I don't understand the reason for this error:

MEncoder 1.0rc4-4.5.2 (C) 2000-2010 MPlayer Team

WARNING: OUTPUT FILE FORMAT IS _AVI_. See -of help.
success: format: 0 data: 0x0 - 0x18c93ddd
[mkv] Track ID 1: video (V_MPEG4/ISO/AVC) "V�deo", -vid 0
[mkv] Track ID 2: audio (A_AAC) "�udio", -aid 0, -alang jpn
[mkv] Track ID 3: subtitles (S_TEXT/ASS) "Legenda", -sid 0, -slang por
[mkv] Will play video track 1.
Matroska file format detected.
VIDEO: [avc1] 1280x720 24bpp 23.976 fps 0.0 kbps ( 0.0 kbyte/s)
[V] filefmt:31 fourcc:0x31637661 size:1280x720 fps:23.976 ftime:=0.0417
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
Opening video filter: [dsize=640:360:0]
================================================== ========================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
================================================== ========================
Audio format 0x4134504d is incompatible with '-oac copy', please try '-oac
pcm' instead or use '-fafmttag' to override it.

Audio mediainfo for source file:

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : A_AAC
Duration : 23mn 41s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Title : �udio
Language : Japanese


My command line is: (with or without -lavfopts format=mp4 the result is the
same)

mencoder -endpos 20 -vf ass -vf dsize=640:360:0 -embeddedfonts -noskip -oac
copy -ovc lavc -lavfopts format=mp4 -lavcopts
vcodec=mpeg4:vqmin=2:vqmax=5:vbitrate=1000000 file.mkv -o teste.mp4

If I force an aac reencode it works, how come it can't be copied? Also I
don't know how to use the -fafmttag to force aac...

OBS: Command line used to test the aac reencode:

mencoder -endpos 20 -vf ass -vf dsize=640:360:0 -embeddedfonts -noskip -oac
faac -faacopts quality=800 -ovc lavc -lavfopts format=mp4 -lavcopts
vcodec=mpeg4:vqmin=2:vqmax=5:vbitrate=1000000 file.mkv -o teste.mp4


I appreciate your attention.

Att,



Renato Rodrigues Zippert