#16 Concat two mp4 files with MP4Box

[Marcel Rouwenhorst]

Hi,

I'm trying to concat two mp4 files. But I get an error: Bad Parameter
Can someone help me with this problem?
I'm using de debian packages. On a previously version it worked fine. I moved from a old debian version to the new one and I also had to change the ffmpeg to avconv which I use to create these mp4 files. I also had to change the audio codec to '-acodec aac -strict experimental'

Kind Regards,

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MP4Box -force-cat -cat conv1-1391608417314.mp4 -add conv1-1391608417345.mp4 -new output.mp4
IsoMedia import - track ID 1 - Video (size 384 x 288)
Error importing conv1-1391608417345.mp4: Bad Parameter

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MP4Box -info conv1-1391608417314.mp4
Movie Info
Timescale 1000 - Duration 00:00:23.985
Fragmented File no - 2 track(s)
File Brand isom - version 512
Created: UNKNOWN DATE
File has root IOD (9 bytes)
Scene PL 0xff - Graphics PL 0xff - OD PL 0xff
Visual PL: Not part of MPEG-4 Visual profiles (0xfe)
Audio PL: Not part of MPEG-4 audio profiles (0xfe)
No streams included in root OD

iTunes Info:
Encoder Software: Lavf53.21.1

Track # 1 Info - TrackID 1 - TimeScale 1000 - Duration 00:00:23.985
Media Info: Language "Undetermined" - Type "vide:avc1" - 23988 samples
Visual Track layout: x=0 y=0 width=384 height=288
MPEG-4 Config: Visual Stream - ObjectTypeIndication 0x21
AVC/H264 Video - Visual Size 384 x 288
AVC Info: 1 SPS - 1 PPS - Profile High @ Level 4.2
NAL Unit length bits: 32
Self-synchronized

Track # 2 Info - TrackID 2 - TimeScale 44100 - Duration 00:00:23.962
Media Info: Language "Undetermined" - Type "soun:mp4a" - 1032 samples
MPEG-4 Config: Audio Stream - ObjectTypeIndication 0x40
MPEG-4 Audio MPEG-4 Audio AAC LC - 2 Channel(s) - SampleRate 44100
Synchronized on stream 1
Alternate Group ID 1

---

MP4Box -version
MP4Box - GPAC version 0.5.0-rev
GPAC Copyright: (c) Jean Le Feuvre 2000-2005
(c) ENST 2005-200X
GPAC Configuration: --build=x86_64-linux-gnu --prefix=/usr --includedir=${prefix}/include --mandir=${prefix}/share/man --infodir=${prefix}/share/info --sysconfdir=/etc --localstatedir=/var --libdir=${prefix}/lib/x86_64-linux-gnu --libexecdir=${prefix}/lib/x86_64-linux-gnu --disable-maintainer-mode --disable-dependency-tracking --prefix=/usr --mandir=${prefix}/share/man --libdir=lib/x86_64-linux-gnu --extra-cflags='-Wall -fPIC -DPIC -I/usr/include/mozjs -DXP_UNIX' --enable-joystick --enable-debug --disable-ssl
Features: GPAC_HAS_JPEG GPAC_HAS_PNG

[Jean Le Feuvre]

could you post the buggy files somewhere ?

[Marcel Rouwenhorst]

Thanks for your replay Jean

It an horrible video with horrible audio
https://www.dropbox.com/s/455txl60y926ekb/conv1-1391608417314.mp4

Let me known when you download it so I can remove it

Kind Regards
Marcel