1. Video-in-Video Insertion into a Pre-encoded Bit-stream
CSE 2010
Video-in-Video Insertion into
a Pre-encoded Bit-stream
Students: Udi Levi
Miki Degtyar
Instructors: Dr. Ofer Hadar
Mr. Maoz Loants

2. Outline Concept Goal System Design Encoder 1 Encoder 2 Results
Future Work

3. Concept
More videos are being stored and broadcast in compressed format

4. Concept Video insertion is a highly developing field
Personalized contents is the new interest of television companies

5. Goal
The goal of this research project is to develop an efficient system for visual data insertion in the compressed domain (e.g. insert a video sequence into a predefined location of pre-encoded video stream) that will achieve considerable performance gain over brute force approaches (in the pixel domain).

6. System Design

7. Encoder 1

8. Encoder 1
Is responsible of preparing the main film for the secondary film insertion i.e. making sure that the area of insertion won’t be affected by parameters from the main film and vice versa.
Motion Vector Suppression
Intra 16x16 Luma Prediction
Intra 4x4 Luma Prediction
Intra 8x8 Chroma Prediction
Disable SKIP mode

9. Encoder 1
Motion Vector Suppression

10. Encoder 1
Intra 16x16 Luma Prediction

11. Encoder 1
Intra 4x4 Luma Prediction

12. Encoder 1
Intra 8x8 Chroma Prediction

13. Encoder 1 Disable SKIP mode
For skipped macroblocks a 16x16 vector MVp is generated of the motion vectors for partitions A,B and C.

14. Encoder 2

15. Encoder 2
Is responsible of preparing the secondary film for insertion into the main film i.e. taking care of all the parameters that might be affected from the main film.
Motion Vector Suppression
Intra 16x16 Luma Prediction
Intra 8x8 Chroma Prediction
MB[0] in the first frame of every GOP is IPCM
Disable predictive coding
Disable SKIP mode

16. Encoder 2 Motion Vector Suppression
In some cases, the best match for a macroblock may be a 16x16 region that extends outside the boundaries of the reference VOP (video object plane).

17. Encoder 2 Intra 16x16 Luma Prediction
MB[0] in the first frame of every GOP is IPCM

18. Encoder 2 Intra 8x8 Chroma Prediction
MB[0] in the first frame of every GOP is IPCM

19. Encoder 2 Disable predictive coding
Disable predictive coding of Intra modes in 4x4 blocks mode on first row and first column.
For each current block E, the encoder and decoder calculate the most probable prediction mode, the minimum of the prediction modes of A and B. ? 5
Min( A , B) <= E
Predict flag = ‘1’ 2 2

20. Encoder 2 Disable SKIP mode
For skipped macroblocks a 16x16 vector MVp is generated of the motion vectors for partitions A,B and C.

21. Results
We have tested encoder 1 and Encoder 2 with 2 types of films. Film A has a low bit-rate, and film B has a high bit-rate. Encoder 1 encodes both films with an increase of 2.5% in bit-rate, and encoder 2 encodes both films with an increase of 3.5% in bit-rate. Both encoders meet the requirements of maximum 10% deviation.
K-bit’s
K-bit’s

22. Future Work Tasks to be completed in this project. Inserter
Main profile

23. Thank you !