[FFmpeg-user] HD > SD Down-Convert Prores Color

[Kevin Wells]

----------------------------------------
> To: ffmpeg-user at ffmpeg.org
> From: cehoyos at ag.or.at
> Date: Wed, 13 May 2015 19:50:05 +0000
> Subject: Re: [FFmpeg-user] HD> SD Down-Convert Prores Color
>
> What about the following?
> $ ffmpeg -f lavfi -i color=s=pal -vcodec v210 out.mov
>
> Carl Eugen
>
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This file is fine:

ffmpeg -f lavfi -i color=s=pal -t 10 -vcodec v210 out.mov
ffmpeg version 2.6.2-tessus Copyright (c) 2000-2015 the FFmpeg developers
  built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
  configuration: --cc=/usr/bin/clang --prefix=/Users/helmutt/data/ext/ffmpeg/sw --as=yasm --extra-version=tessus --disable-shared --enable-static --disable-ffplay --enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libx265 --enable-libxvid --enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libxavs --enable-libsoxr --enable-libwavpack --enable-version3 --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm --enable-libopus --enable-libmodplug --enable-fontconfig --enable-libfreetype --enable-libass --enable-libbluray --enable-filters --disable-indev=qtkit --disable-indev=x11grab_xcb --enable-runtime-cpudetect
  libavutil      54. 20.100 / 54. 20.100
  libavcodec     56. 26.100 / 56. 26.100
  libavformat    56. 25.101 / 56. 25.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 11.102 /  5. 11.102
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Input #0, lavfi, from 'color=s=pal':
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x576 [SAR 1:1 DAR 5:4], 25 tbr, 25 tbn, 25 tbc
File 'out.mov' already exists. Overwrite ? [y/N] y
Output #0, mov, to 'out.mov':
  Metadata:
    encoder         : Lavf56.25.101
    Stream #0:0: Video: v210 (v210 / 0x30313276), yuv422p, 720x576 [SAR 1:1 DAR 5:4], q=2-31, 200 kb/s, 25 fps, 12800 tbn, 25 tbc (default)
    Metadata:
      encoder         : Lavc56.26.100 v210
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> v210 (native))
Press [q] to stop, [?] for help
[swscaler @ 0x7fb66880b000] Warning: data is not aligned! This can lead to a speedloss
frame=  187 fps=0.0 q=0.0 size=  201960kB time=00:00:07.48 bitrate=221184.0kbitsframe=  250 fps=0.0 q=0.0 Lsize=  270002kB time=00:00:10.00 bitrate=221185.4kbits/s    
video:270000kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000623%