Alguien puede decirme ke diferencias hay entre capturar en modo normal o en compatibility mode, y las ventajas y desventajas, es ke en modo compatibility mode no me pierde casi frames, aunke tb el tamaño del fichero ke me da mientras capturo es falso( como si capturara sin compresion)
Gracias por todo
un saludo

Según la documentación de VirtualduB

CitarWhat's the difference between compatibility mode and normal (internal) capture?

    Compatibility capture mode (F5 key) is a no-frills, straight Video for Windows capture -- it lets Video for Windows do as much work as possible and is the failsafe mode you should use to diagnose problems when regular capture mode doesn't work. It has a number of disadvantages:

        * Timing correction is disabled, so audio on long captures may be out of sync.
        * The capture file will be invalid if it exceeds 2GB.
        * Only one capture file is allowed -- no multisegment captures.
        * VirtualDub won't be able to display the compressed video frame size.
        * Video filtering options that change the size of the frame aren't allowed.
        * Disk I/O is buffered, so you may encounter problems when pushing the limits of your hard disk bandwidth.

    It's basically like Vidcap32.

    Use normal capture mode (F6) when possible. If you find that you can't capture even in compatibility mode, chances are something is seriously wrong with your system configuration.

http://www.virtualdub.org/docs_capture