ffmpeg version 2.7.2 Copyright (c) 2000-2015 the FFmpeg developers
  built with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
  configuration: --prefix=/Volumes/Ramdisk/sw --enable-gpl --enable-pthreads --enable-version3 --enable-libspeex --enable-libvpx --disable-decoder=libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-filters --enable-libgsm --enable-libvidstab --enable-libx265 --disable-doc --arch=x86_64 --enable-runtime-cpudetect
  libavutil      54. 27.100 / 54. 27.100
  libavcodec     56. 41.100 / 56. 41.100
  libavformat    56. 36.100 / 56. 36.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 16.101 /  5. 16.101
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.100 /  1.  2.100
  libpostproc    53.  3.100 / 53.  3.100
Guessed Channel Layout for  Input Stream #0.0 : stereo
Input #0, wav, from 'tu as beaucoup de vertus.wav':
  Duration: 00:00:01.77, bitrate: 1536 kb/s
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2 channels, s16, 1536 kb/s
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'xxxx.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 1
    compatible_brands: mp42mp41
    creation_time   : 2015-09-09 18:05:56
  Duration: 00:00:01.80, start: 0.000000, bitrate: 48813 kb/s
    Stream #1:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 960x960, 48553 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc (default)
    Metadata:
      creation_time   : 2015-09-09 18:05:56
      handler_name    : Apple Video Media Handler
    Stream #1:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 255 kb/s (default)
    Metadata:
      creation_time   : 2015-09-09 18:05:56
      handler_name    : Apple Sound Media Handler
[mp4 @ 0x7fc13b81ac00] Codec for stream 0 does not use global headers but container format requires global headers
[mp4 @ 0x7fc13b81ac00] Tag [1][0][0][0]/0x00000001 incompatible with output codec id '65536' ([0][0][0][0])
Output #0, mp4, to 'newfiles/xxxx.mp4':
    Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 960x960, q=2-31, 48553 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
    Metadata:
      creation_time   : 2015-09-09 18:05:56
      handler_name    : Apple Video Media Handler
    Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, 1536 kb/s
Stream mapping:
  Stream #1:0 -> #0:0 (copy)
  Stream #0:0 -> #0:1 (copy)
Could not write header for output file #0 (incorrect codec parameters ?): Invalid data found when processing input