[Xvid-devel] Have XVid working but playback of encodig

[Michael Militzer]

Hi Rob,

thanks for providing the additional information. Note that Xvid does not
support audio encoding. Xvid is not a video capturing or transcoding
application but rather a video codec only. So capturing audio from the PC
microphone and laying it over the video track is out of the scope of Xvid.

So if you want to capture audio/video from microphone and camera under
windows, and also need to create files in a container format with both
an audio and video track, I'd suggest that you implement this kind of
application using DirectShow. You can also use the Xvid encoder from
within the DirectShow framework.

If you really need to continue working with Xvid's native API, then be
advised that Xvid's API header (xvid.h) contains a lot of descriptions
for the different structs and codec options. Further, the xvid_encraw
and xvid_decraw example programs (look into xvidcore/examples directory)
demonstrate the use of the Xvid API.

Best regards,
Michael


Quoting Rob <robincc at terra.es>:

> Hi and thanks for the reply,
>
> I’m using the xvidcore.dll, calling XVidEncore, from a dedicated   
> thread under. Windows 7 32bit
>
> Without documentation, I’ve managed to get it working, and I assume   
> that after setting the FPS, the encoder records each frame in   
> sequence, without any relation to actual real-time, so its important  
>  not to skip any frames.
>
> I’m adjusting my code to pass in a frame grab to one of 2 buffers,   
> and that way if the thread passing in frame grabs falls behind, the   
> encoder thread uses the last buffer until an update arrives, which   
> should keep the playback speed correct to the graphics window   
> animation we’re grabbing.
>
> Is there any documentation for the API as I’d also like to be able   
> to encode the PC microphone input audio with the video in real-time?
>
> This is for educational video production, so the teachers need to be  
>  able to run the video encoder of whichever window they need, and   
> talk over the top.
>
> Any help would be much appreciated.
>
> Thanks
>
> Rob
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