Hi,

On Sat, Jun 18, 2011 at 5:52 AM, Anton Khirnov <[email protected]> wrote:
> It supports passing options to codecs.
> ---
>  libavfilter/vsrc_movie.c |    2 +-
>  libavformat/avformat.h   |   27 +++++++++++++++++++++++++++
>  libavformat/utils.c      |   18 +++++++++++++-----
>  3 files changed, 41 insertions(+), 6 deletions(-)
[..]
> +/**
> + * Read packets of a media file to get stream information. This
> + * is useful for file formats with no headers such as MPEG. This
> + * function also computes the real framerate in case of MPEG-2 repeat
> + * frame mode.
> + * The logical file position is not changed by this function;
> + * examined packets may be buffered for later processing.
> + *
> + * @param ic media file handle
> + * @param options  If non-NULL, an ic.nb_streams long array of pointers to
> + *                 dictionaries, where i-th member contains options for
> + *                 codec corresponding to i-th stream.
> + *                 On return each dictionary will be filled with options 
> that were not found.

What happens if we open a codec multiple times. Say, there are three
streams for a DVD, one MPEG-2 video and two AC-3 audio, and I want to
use the drc_scale private option for both. I don't think that works
right now.

Ronald
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