When I try converting mkv to mp4 using ffmpeg, the following error occurs:

[ipod @ 0x16fa0a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: -2 >= -2 av_interleaved_write_frame(): Invalid argument

I used this command to convert the file:

ffmpeg -i input.mkv -vcodec copy -acodec copy -absf aac_adtstoasc output.m4v

The input file has the following characteristics:

mediainfo input.mkv 

General

Unique ID : 200459305952356554213392832683163418790 (0x96CF0ED8DB5914CBB9E18163689280A6)
Complete name : input.mkv
Format : Matroska
Format version : Version 2
File size : 1.46 GiB
Duration : 1h 5mn
Overall bit rate : 3 168 Kbps
Encoded date : UTC 2010-09-26 21:44:02
Writing application : mkvmerge v2.9.5 ('Tu es le seul') built on >Jun 17 2009 16:28:30
Writing library : libebml v0.7.8 + libmatroska v0.8.1

Video ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 5mn
Bit rate : 2 910 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.126
Stream size : 1.31 GiB (90%)
Writing library : x264 core 105 r1724 b02df7b
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=18 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=0 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc=2pass / mbtree=0 / bitrate=2910 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00

Default : Yes
Forced : No

Audio ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Codec ID : A_AC3
Duration : 1h 5mn
Bit rate mode : Constant
Bit rate : 256 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 121 MiB (8%)
Language : English
Default : Yes
Forced : No

Being new to ffmpeg, I'm not sure what the error means or how to correct it.

Thanks!