Encoding to x264 using ffmpeg

[Alan Holt]

Please, look how to install last ffmpeg withe x264 support here:

http://rob.opendot.cl/index.php/useful-stuff/ffmpeg-x264-encoding-guide/

<http://rob.opendot.cl/index.php/useful-stuff/ffmpeg-x264-encoding-guide/>and
here:

http://ubuntuforums.org/showthread.php?t=786095

<http://ubuntuforums.org/showthread.php?t=786095>it's very easy))

On Thu, Sep 16, 2010 at 3:45 AM, Marcelo Magno T. Sales
<mmtsales at gmail.com>wrote:

> Hello,
>
> When I was running Karmic, I would encode a video to x264 running ffmpeg
> as follows:
> ffmpeg -i inputfile.ext -vcodec libx264 -acodec libfaac -sameq -s
> 854x480 -aspect 1.78 outputfile.mp4
>
> It used to work great. However, when I use this very same command line
> in lucid, I get this error message:
>
> [libx264 @ 0xc28200]broken ffmpeg default settings detected
> [libx264 @ 0xc28200]use an encoding preset (vpre)
> Error while opening codec for output stream #0.0 - maybe incorrect
> parameters such as bit_rate, rate, width or height
>
> I found some preset files in /usr/share/ffmpeg. If I use one of them
> with the -vpre switch, ffmpeg runs without complaining, but with none of
> these preset files I get results comparable with what I was used to in
> Karmic. For example, if I run ffmpeg with -vpre default, I get a very
> tiny file with horrible quality. If I use -vpre lossless_slower, I get a
> file with good quality, but with a size 7 to 10 times the original (in
> Karmic, I would get a file smaller than the original). And so on.
> I've read some ffmpeg encoding tutorials, but so far I'm still unable to
> generate video files with acceptable quality and sizes.
>
> Any suggestions?
>
> Thanks,
>
> Marcelo
>
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