title: ffmpeg to convert mov to flv
body: <p>I'm trying to convert a mov video to flv, but keep getting these errors below.
  There are 2 commands I used, both are below.</p>
  
  <pre><code>ffmpeg -y -i video.mov -deinterlace -acodec copy -r 25 -qmin 3 -qmax 6 video.flv
  
  
  FFmpeg version SVN-r16573, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  configuration: --extra-cflags=-fno-common --enable-memalign-hack --enable-pthreads --enable-libmp3lame --enable-libxvid --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libfaac --enable-libgsm --enable-libx264 --enable-libschroedinger --enable-avisynth --enable-swscale --enable-gpl
  libavutil     49.12. 0 / 49.12. 0
  libavcodec    52.10. 0 / 52.10. 0
  libavformat   52.23. 1 / 52.23. 1
  libavdevice   52. 1. 0 / 52. 1. 0
  libswscale     0. 6. 1 /  0. 6. 1
  built on Jan 13 2009 02:57:09, gcc: 4.2.4
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'vid\video.mov':
  Duration: 00:03:16.00, start: 0.000000, bitrate: 398 kb/s
  Stream #0.0(eng): Video: mpeg4, yuv420p, 800x600 [PAR 1:1 DAR 4:3], 30.00 tb(r)
  Stream #0.1(eng): Audio: pcm_u8, 8000 Hz, mono, s16, 64 kb/s
  Output #0, flv, to 'vid\video.flv':
  Stream #0.0(eng): Video: flv, yuv420p, 800x600 [PAR 1:1 DAR 4:3], q=3-6, 200 kb/s, 25.00 tb(c)
  Stream #0.1(eng): Audio: pcm_u8, 8000 Hz, mono, s16, 64 kb/s
  Stream mapping:
  Stream #0.0 -&gt; #0.0
  Stream #0.1 -&gt; #0.1
  [NULL @ 0x1714390]codec not compatible with flv
  Could not write header for output file #0 (incorrect codec parameters ?)
  </code></pre>
  
  <p>Second command:</p>
  
  <pre><code>ffmpeg -y -i video.mov -deinterlace -ar 44100 -r 25 -qmin 3 -qmax 6 video.flv
  </code></pre>
  
  <p>Audio resampler only works with 16 bits per sample, patch welcome.</p>
  
  <p>With a newer version of ffmpeg:</p>
  
  <pre><code>ffmpeg version N-49610-gc2dd5a1 Copyright (c) 2000-2013 the FFmpeg developers
  built on Feb  5 2013 13:20:59 with gcc 4.7.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
    libavutil      52. 17.101 / 52. 17.101
    libavcodec     54. 91.100 / 54. 91.100
    libavformat    54. 61.104 / 54. 61.104
    libavdevice    54.  3.103 / 54.  3.103
    libavfilter     3. 35.101 /  3. 35.101
    libswscale      2.  2.100 /  2.  2.100
    libswresample   0. 17.102 /  0. 17.102
    libpostproc    52.  2.100 / 52.  2.100
  Guessed Channel Layout for  Input Stream #0.1 : mono
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'vid\video.mov':
    Metadata:
      major_brand     : qt  
      minor_version   : 512
      compatible_brands: qt  
      creation_time   : 1970-01-01 00:00:00
    Duration: 00:02:50.39, start: 0.000000, bitrate: 370 kb/s
      Stream #0:0(eng): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 1366x768 [SAR 1:1 DAR 683:384], 308 kb/s, 11.50 fps, 11.50 tbr, 23 tbn, 23 tbc
      Metadata:
        creation_time   : 1970-01-01 00:00:00
        handler_name    : DataHandler
      Stream #0:1(eng): Audio: pcm_u8 (raw  / 0x20776172), 8000 Hz, mono, u8, 64 kb/s
      Metadata:
        creation_time   : 1970-01-01 00:00:00
        handler_name    : DataHandler
  [flv @ 026347a0] FLV does not support sample rate 8000, choose from (44100, 22050, 11025)
  Output #0, flv, to 'vid\video.flv':
    Metadata:
      major_brand     : qt  
      minor_version   : 512
  compatible_brands: qt  
      encoder         : Lavf54.61.104
      Stream #0:0(eng): Video: flv1 ([2][0][0][0] / 0x0002), yuv420p, 1366x768 [SAR 1:1 DAR 683:384], q=2-31, 200 kb/s, 1k tbn, 11.50 tbc
      Metadata:
        creation_time   : 1970-01-01 00:00:00
        handler_name    : DataHandler
      Stream #0:1(eng): Audio: mp3 ([2][0][0][0] / 0x0002), 8000 Hz, mono, s16p
      Metadata:
        creation_time   : 1970-01-01 00:00:00
        handler_name    : DataHandler
  Stream mapping:
    Stream #0:0 -&gt; #0:0 (mpeg4 -&gt; flv)
    Stream #0:1 -&gt; #0:1 (pcm_u8 -&gt; libmp3lame)
  Could not write header for output file #0 (incorrect codec parameters ?): Invalid data found when processing input
  </code></pre>
  
  <p>1 more thing please:
  If I use this newer version of ffmpeg to create a video with the below command, I get a video with a very hazy display.
  It's like a few black dots on a blank screen:</p>
  
  <pre><code>ffmpeg -i img%d.png -i audio.wav -acodec copy output.mov
  </code></pre>
  
  <p>what could be the reason for this display?</p>