ffmpeg2theora and 'Audio sample format conversion failed'

I have also tried to convert the big_buck_bunny_480p_h264.mov to ogg theora using ffmpeg2theora from http://firefogg.org/nightly and got an audio error.

input command:
liviu@pc:~$ ./ffmpeg2theora.linux big_buck_bunny_480p_h264.mov -o big_buck_bunny_480p.ogv -v 10 -a 5

output error:
[aac @ 0xb44d2a0] Custom get_buffer() for use withavcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer
[aac @ 0xb44d2a0] Please port your application to avcodec_decode_audio4()
[audioresample @ 0xb47a300] Audio sample format conversion failed
[audioresample @ 0xb47a300] Audio sample format conversion failed

When I add --noaudio, there is no error message.

it happens on 14.04 too when i try to convert a mp4 which download from youtube to ogv.

The same with me. In 14.04 trying to convert a mp4 and a 3gp file downloaded from youtube i get a growing list of :
[audioresample @ 0x8afaa40] Audio sample format conversion failed
.....
.....

yo tuve el mismo error "Audio sample format conversion failed" tratando de cortar un video:
    :-$ ffmpeg2theora -f mp4 -s 168 -e 180 --croptop 36 --cropbottom 32 -p pro oye.mp4 -o oye-uno.mp4
 y lo solucione con mencoder:
    :-$ mencoder oye.mp4 -ovc copy -oac pcm -ss 165 -endpos 15 -o oye-uno.mp4
con esto logre cortar el video, solo faltaba eliminar los bordes.

solo use ffmpeg2theora para eliminar los bordes:
    :-$ ffmpeg2theora --croptop 36 --cropbottom 32 oye-uno.mp4

Similar problems here:

ffmpeg2theora disorder_in_the_court.mpeg -a 10 -v 10 -o disorder_in_the_court.ogv

[mpeg2video @ 0x9f58460] warning: first frame is no keyframe
[audioresample @ 0x9f697a0] Audio sample format conversion failed

The last line repeats until I break (CTRL-C)

Further info about source from mediainfo:

General
Complete name : disorder_in_the_court.mpeg
Format : MPEG-PS
File size : 570 MiB
Duration : 16mn 36s
Overall bit rate : 4 796 Kbps

Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=2, N=16
Duration : 16mn 36s
Bit rate : 4 500 Kbps
Width : 720 pixels
Height : 480 pixels
Display aspect ratio : 4:3
Frame rate : 29.970 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.434
Time code of first frame : 00:00:00;00
Time code source : Group of pictures header
Stream size : 532 MiB (93%)

Audio
ID : 192 (0xC0)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Duration : 16mn 36s
Bit rate mode : Constant
Bit rate : 224 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : -67ms
Stream size : 26.6 MiB (5%)