title: Could not find tag for codec h264 in stream #0 codec (ffmpeg flac to alac convert)
body: <p>I'm rying to convert flac audio file into alac audio file. I'm using ffmpeg command in mac os terminal after installing ffmpeg using command brew install ffmpeg.</p>
  
  <p>After running following command</p>
  
  <pre><code>for name in *.flac; do ffmpeg -nostdin -i "$name" -acodec alac "${name%.*}.m4a"; done
  </code></pre>
  
  <p>I am getting the following error:</p>
  
  <pre><code>Stream mapping:
    Stream #0:1 -&gt; #0:0 (mjpeg (native) -&gt; h264 (libx264))
    Stream #0:0 -&gt; #0:1 (flac (native) -&gt; alac (native))
  [ipod @ 0x7fa5c6800000] Frame rate very high for a muxer not efficiently supporting it.
  Please consider specifying a lower framerate, a different muxer or -vsync 2
  [libx264 @ 0x7fa5c5804a00] using SAR=1/1
  [libx264 @ 0x7fa5c5804a00] MB rate (77760000) &gt; level limit (16711680)
  [libx264 @ 0x7fa5c5804a00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  [libx264 @ 0x7fa5c5804a00] profile High, level 6.2
  [libx264 @ 0x7fa5c5804a00] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  [ipod @ 0x7fa5c6800000] Could not find tag for codec h264 in stream #0, codec not currently supported in container
  Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
  Error initializing output stream 0:1 -- 
  Conversion failed!
  </code></pre>
  
  <p>Is the problem located in stream #0:1?</p>
  
  <p>Should I be using</p>
  
  <pre><code>-c:a alac
  </code></pre>
  
  <p>instead of</p>
  
  <pre><code>-acodec alac
  </code></pre>