View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000205 | JVT JM H.264/AVC reference software | encoder and decoder | public | 2010-03-30 20:58 | 2010-03-30 20:58 |
| Reporter | xche2902 | Assigned To | |||
| Priority | normal | Severity | major | Reproducibility | have not tried |
| Status | new | Resolution | open | ||
| Product Version | JM 16.0 | ||||
| Summary | 0000205: seems the lossless mode still doesn't work | ||||
| Description | I have been trying to compress a RGB sequence with the lossless coding mode, supported by JM. The color depth is 14-bit. I am modified the default encoder.cfg with the followings: ProfileIDC = 244 PISlice = 0 # Quant. param for I Slices (0-51) QPPSlice = 0 # Quant. param for P Slices (0-51)LosslessCoding = 1 # Enable lossless coding when qpprime_y is zero (0 Disabled, 1 Enabled)YUVFormat = 3 # YUV format (0=4:0:0, 1=4:2:0, 2=4:2:2, 3=4:4:4) RGBInput = 1 # 1=RGB input, 0=GBR or YUV input SeparateColourPlane = 1 # 4:4:4 coding: 0=Common mode, 1=Independent mode SourceBitDepthLuma = 14 # Source Bit Depth for Luma color component (8...14 bits) SourceBitDepthChroma = 14 # Source Bit Depth for Chroma color components (8...14 bits) SourceBitDepthRescale = 0 # Rescale bit depth of source for output (0: Disable 1: Enable) OutputBitDepthLuma = 14 # Output Bit Depth for Luma color component (8...14 bits) OutputBitDepthChroma = 14 # Output Bit Depth for Chroma color components (8...14 bits) However, I still got lossy compression results(I monitored and compared the pixel values of the original sequence and the decoded sequence, they are a bit different). Could you please let me know if there is a problem with the encoder, or my configuration is incorrect? I have tried from JM14.2 to JM16.2, and still have not resolved the problem. BTW, do I have to turn off the deblocking function for 100% lossless compression? I just removed the deblockFrame function, is it ok? Thank you very much for viewing this issue! | ||||
| Tags | No tags attached. | ||||
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2010-03-30 20:58 | xche2902 | New Issue |
