2nd International ICST Conference on Mobile Multimedia Communications

Research Article

Variable frame rate video for mobile devices

  • @INPROCEEDINGS{10.1145/1374296.1374334,
        author={V.  Baroncini  and D. Ciavatta and G. Gaudino  and R. Felice and G. Lacovoni and F. Ubaldi},
        title={Variable frame rate video for mobile devices},
        proceedings={2nd International ICST Conference on Mobile Multimedia Communications},
  • V. Baroncini
    D. Ciavatta
    G. Gaudino
    R. Felice
    G. Lacovoni
    F. Ubaldi
    Year: 2006
    Variable frame rate video for mobile devices
    DOI: 10.1145/1374296.1374334
V. Baroncini 1,*, D. Ciavatta1,*, G. Gaudino 2,*, R. Felice3,*, G. Lacovoni4,*, F. Ubaldi5,*
  • 1: Fondazione Ugo Bordoni, Rome, Italy
  • 2: I.S.COM., Rome, Italy
  • 3: Co.Ri.Tel., Rome, Italy
  • 4: CREATE-NET, Trento, Italy
  • 5: Co.Ri.Tel., Trento, Italy
*Contact email: vittorio@fub.it, dciavatta@fub.it, giancarlo.gaudino@istsupcti.it, felice@coritel.it, giovanni.iacovoni@create-net.it, ubaldi@coritel.it


In [1] we introduced a new real-time variable frame rate control scheme. It is based on the video jerkiness and it can be applied to both coding and transcoding. This scheme constantly traces the motion of the incoming video and automatically tunes the outgoing frame rate according to the level of jerkiness acceptable by the user.

This scheme has been conceived in the framework of mobile communications, which calls for an optimum use of both the available bandwidth and terminal resources.

In this paper we present a subjective assessment of our solution carried out in a professional laboratory suitably equipped. Towards this aim a group of non-expert users was asked to express their preference when watching side by side the same video coded at variable frame rate and at fixed frame rate. Results show that most of the times a variable frame rate control based on a dynamic bit/frame allocation scheme may substantially improve the video quality perceived by the users.