Dynamic frame-skipping in video transcoding
- 27 November 2002
- proceedings article
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 616-621
- https://doi.org/10.1109/mmsp.1998.739049
Abstract
[[abstract]]This paper investigates the dynamic frame skipping strategy in video transcoding. To speed up the operation, a video transcoder usually reuses the decoded motion vectors to reencode the video sequences at a lower bit-rate. When frame skipping is allowed in a transcoder, those motion vectors can not be reused because the motion vectors of the current frame is no longer estimated from the immediate past frame. To reduce the computational complexity of motion vectors reestimation, a bilinear interpolation approach is developed to overcome this problem. Based on these interpolated motion vectors, the search range can be much reduced. Furthermore, we propose a frame rate control scheme which can dynamically adjust the number of skipped frames according to the accumulated magnitude of the motion vectors. As a result, the decoded sequence can present much smoother motion[[fileno]]2030144030044[[department]]電機工程學Keywords
This publication has 3 references indexed in Scilit:
- Scene context dependent reference frame placement for MPEG video codingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Dynamic bit allocation in video combining for multipoint conferencingIEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, 1998
- Transcoding of MPEG bitstreamsSignal Processing: Image Communication, 1996