Methods and systems for achieving transition effects with MPEG-encoded picture content
Methods and systems of using a single MPEG frame to produce a fade effect that extends over more than one frame period. An example system includes a computer-based device that includes a receiver that receives an MPEG formatted image from a source system over a network, a component that modifies a sequence header of the received MPEG formatted image based on a predetermined fade event, and a decoder that decodes the MPEG formatted image with the modified sequence header. Also, the system includes a display device that displays the decoded image.
1 . A method comprising:
receiving MPEG formatted images;
generating one or more fade frame images between at least two of the received MPEG formatted images; and
displaying the MPEG formatted images with the generated fade frame images.
2 . The method of claim 1 , wherein generating includes:
modifying a sequence header of one of the received MPEG formatted images based on a pre-determined fade event; and
decoding the MPEG formatted image with the modified sequence header to generate fade frame images.
3 . The method of claim 3 , wherein at least one of the received MPEG formatted images is a P-frame formatted image.
4 . The method of claim 2 , further comprising repeating decoding a number of times based on the pre-determined fade event.
5 . The method of claim 4 , wherein the pre-determined fade event includes a manually selected fade signal.
6 . The method of claim 4 , wherein the pre-determined fade event includes an automatically selected fade signal.
7 . The method of claim 3 , wherein modifying includes modifying a non-intra quantizer matrix included within the sequence header.
8 . The method of claim 2 , wherein the received MPEG formatted image is a B-frame formatted image.
9 . The method of claim 8 , further comprising repeating modifying a number of times based on the pre-determined fade event.
10 . The method of claim 9 , wherein the pre-determined fade event includes a manually selected fade signal.
11 . The method of claim 9 , wherein the pre-determined fade event includes an automatically selected fade signal.
12 . A system comprising:
a computer-based device comprising:
a receiver configured to receive MPEG formatted images; and
a component configured to generate one or more fade frame images between at least two of the received MPEG formatted images; and
a display device configured to display the MPEG formatted images with the generated fade frame images.
13 . The system of claim 12 , wherein the component modifies a sequence header of one of the received MPEG formatted images based on a pre-determined fade event, and decodes the MPEG formatted image with the modified sequence header.
14 . The system of claim 13 , wherein the received MPEG formatted images include one or more P-frame formatted image.
15 . The system of claim 13 , wherein the decoder repeats decoding the P-frame formatted image a number of times based on the pre-determined fade event.
16 . The system of claim 15 , wherein the pre-determined fade event includes a manually selected fade signal.
17 . The system of claim 15 , wherein the pre-determined fade event includes an automatically selected fade signal.
18 . The system of claim 13 , wherein the component modifies a non-intra quantizer matrix included within the sequence header.
19 . The system of claim 13 , wherein the received MPEG formatted image is a B-frame formatted image.
20 . The system of claim 19 , wherein the component repeats modifying the sequence header a number of times based on the pre-determined fade event.
21 . The system of claim 20 , wherein the pre-determined fade event includes a manually selected fade signal.
22 . The system of claim 20 , wherein the pre-determined fade event includes an automatically selected fade signal.