System and method of transmission and reception of progressive content with isolated fields for conversion to interlaced display
View Patent ↗Systems and methods of coding progressive content with isolated fields for conversion to interlaced display are provided. Some systems and methods may find use in, for example, digital video compression systems and methods. Film material may be encoded as video material with an intended field polarity and an explicit 3:2 pull-down operation for interlaced display (e.g., a 30-frames-per-second display).
1. A video encoder circuit comprising:
circuitry operable to encode film material as a video with a field polarity and a 3:2 pull-down operation for an interlaced display format; and
wherein the circuitry is operable to insert an encoded isolated field with the field polarity,
wherein the circuitry is operable to generate a decoding time stamp (DTS) or a presentation time stamp (PTS) for a particular picture without knowledge of a film mode state of the particular picture.
2. The video encoder of claim 1 , wherein the circuitry is operable to insert the encoded isolated field between a first frame and a second frame to achieve 3:2 pull-down for coding the film material.
3. The video encoder of claim 1 , wherein the circuitry is operable to receive the film material, the received film material resulting from a 3:2 pull-down process.
4. The video encoder of claim 1 , wherein the circuitry is operable to encode the film material into a bitstream comprising fields of strictly alternating polarity.
5. The video encoder of claim 1 , wherein the circuitry comprises a transmitter operable to transmit the encoded film material over a network.
6. The video encoder of claim 1 , wherein the circuitry is operable to generate a DTS or a PTS for the inserted encoded isolated field.
7. The video encoder of claim 1 , wherein the circuitry is operable to generate a DTS and a PTS for both coded frames and inserted encoded isolated fields.
8. The video encoder of claim 1 , wherein the circuitry is operable to indicate polarity for inserted encoded isolated fields but not for encoded frames.
9. A method for encoding video information, the method comprising:
encoding a source material as a video material with a field polarity and a 3:2 pull-down operation for an interlaced display format; and
wherein the encoding comprises inserting an encoded isolated field with the field polarity,
wherein the encoding comprises generating a decoding time stamp (DTS) or a presentation time stamp (PTS) for a particular picture without knowledge of a film mode state of the particular picture.
10. The method of claim 9 , wherein inserting an encoded isolated field with the field polarity comprises inserting the encoded isolated field between a first frame and a second frame to achieve 3:2 pull-down for coding the film material.
11. The method of claim 9 , further comprising receiving the film material, the received film material resulting from a 3:2 pull-down process.
12. The method of claim 9 , wherein the encoding comprises encoding the film material into a bitstream comprising fields of strictly alternating polarity.
13. The method of claim 9 , further comprising transmitting the encoded film material over a network.
14. The method of claim 9 , wherein the encoding comprises generating a DTS or a PTS for the inserted encoded isolated field.
15. The method of claim 9 , wherein the encoding comprises generating a DTS and a PTS for both coded frames and inserted encoded isolated fields.
16. The method of claim 9 , wherein the encoding comprises indicating polarity for inserted encoded isolated fields but not for encoded frames.
17. A video encoding system comprising:
receiving circuitry operable to receive film material;
encoding circuitry operable to encode received film material as a video with a field polarity and a 3:2 pull-down operation for an interlaced display format, wherein the encoding circuitry is operable to insert an encoded isolated field with the field polarity, wherein the encoding circuitry is operable to generate a decoding time stamp (DTS) or a presentation time stamp (PTS) for a particular picture without knowledge of a film mode state of the particular picture; and
transmitting circuitry operable to transmit the encoded film material over a network.
18. The video encoder of claim 17 , wherein the encoding circuitry is operable to insert the encoded isolated field between a first frame and a second frame to achieve 3:2 pull-down for coding the received film material.