[FFmpeg-user] ffmpeg conversion for youtube & vimeo

[J. Bakshi ( জ. বকসী )]

Dear list,

I like to upload videos to vimeo and youtube.

Hence I need to convert .dat .vom & .avi to mp4

I have already converted .dat -> .mp4 with the following

 ffmpeg -i AVSEQ01.DAT -acodec libfaac -vcodec libx264 out.mp4

and when try to play the .mp4 with ffplay I get the following error

ffplay out.mp4
 
ffplay version 0.11.1 Copyright (c) 2003-2012 the FFmpeg developers
  built on Aug 11 2012 08:15:54 with gcc 4.7.1
  configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --disable-decoder=libdirac --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-libvpx --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libdc1394 --disable-altivec -!
 -disable-armv5te --disable-armv6 -  libavutil      51. 54.100 / 51. 54.100
  libavcodec     54. 23.100 / 54. 23.100
  libavformat    54.  6.100 / 54.  6.100
  libavdevice    54.  0.100 / 54.  0.100
  libavfilter     2. 77.100 /  2. 77.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f280c0008c0] moov atom not found
out.mp4: Invalid data found when processing input


Though ffplay is able to play some other mp4 downloaded from youtube.

What might be the issue here ?

Suggestion of ffmpeg parameters for best compression regarding youtube and vimeo isvery much welcome.

Is winFF good for the job ?

Thanks