Additional information about ffenc_mpeg4

[Wes Miller]

Hi,

I just did a gst-inspect on ffenc_mpeg4.  Wow, that's a lot of options.  I don't have a clue what many of them are for nor any idea how to choose values best suited for my use (encoding a webcam feed).  Can someone point me to useful documentation on choosing good settings?

Thanks!

Wes

[Stefan Sauer]

On 02.07.2010 16:23, Wes Miller wrote:

> Hi,
>
> I just did a gst-inspect on ffenc_mpeg4.  Wow, that's a lot of options.  I
> don't have a clue what may of them are not any idea how to choose values
> best suited for my use (encoding a webcam feed).  Can someone point me to
> useful documentation on choosing good settings?
>
> Thanks!
>
> Wes
>  

I am afraid you will need to read the mpeg4 spec. Having presets for the
mpeg4 encoder would be nice of course.

Stefan

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[wally_bkg]

Stefan Kost wrote

On 02.07.2010 16:23, Wes Miller wrote:

I am afraid you will need to read the mpeg4 spec. Having presets for the
mpeg4 encoder would be nice of course.

Stefan

For me the defaults produce pretty much crap quality, so you are saying we are basically SOL if the defaults element settings aren't good enough?

[wally_bkg]

Stumbling around in the dark I find:

    encode=gst_element_factory_make("ffenc_mpeg4", "encoder");
    mux=gst_element_factory_make("ffmux_mp4", "muxer");
        g_object_set (G_OBJECT (encode), "bitrate", 2000000, NULL);
        g_object_set (G_OBJECT (encode), "interlaced", TRUE, NULL);

gives me what looks to be usable quality and about 9MB/minute file sizes.

I'd sure like some settings infromation from someone who knows what they are doing!