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@leaveye 2026-03-30T01:57:26.000000Z 字数 3588 阅读 31

拓奇沟通 - 场解码

拓奇 ss528 SDK 视频 编码

SS528 V100 V2.0.0.1 SDK 不支持场解码

SDK 版本

  1. [VDEC] Version: [SS528V100V2.0.0.1 B020 Release], Build Time[May  3 2022, 10:26:13]

解码现场数据流 18.h264 时

SDK:logmpp 日志中，持续性、一直报错

  1. <3>[  vdec] [Func]:vdec_check_firm_ware_image [Line]:1181 [Info]:this is a field stream and vdec do not support! chn 0
  2. <3>[  vdec] [Func]:vdec_check_firm_ware_image [Line]:1181 [Info]:this is a field stream and vdec do not support! chn 0
  3. <3>[  vdec] [Func]:vdec_check_firm_ware_image [Line]:1181 [Info]:this is a field stream and vdec do not support! chn 0

开发环境中对 VDEC 做了少量疑似相关配置，没有任何改变。

ffmpeg trace-header 分析数据，看到确实是场编码

  1. Input #0, h264, from '18.h264':
  2.   Duration: N/A, bitrate: N/A
  3.   Stream #0:0: Video: h264 (Main), yuv420p(top first), 352x576, 25 fps, 1200k tbr, 1200k tbn
  4. [trace_headers @ 0x55a913e38600] Extradata
  5. [trace_headers @ 0x55a913e38600] Sequence Parameter Set
  6. [trace_headers @ 0x55a913e38600] 0           forbidden_zero_bit                                          0 = 0
  7. [trace_headers @ 0x55a913e38600] 1           nal_ref_idc                                                11 = 3
  8. [trace_headers @ 0x55a913e38600] 3           nal_unit_type                                           00111 = 7
  9. [trace_headers @ 0x55a913e38600] 8           profile_idc                                          01001101 = 77
  10. [trace_headers @ 0x55a913e38600] 16          constraint_set0_flag                                        0 = 0
  11. [trace_headers @ 0x55a913e38600] 17          constraint_set1_flag                                        1 = 1
  12. [trace_headers @ 0x55a913e38600] 18          constraint_set2_flag                                        0 = 0
  13. [trace_headers @ 0x55a913e38600] 19          constraint_set3_flag                                        0 = 0
  14. [trace_headers @ 0x55a913e38600] 20          constraint_set4_flag                                        0 = 0
  15. [trace_headers @ 0x55a913e38600] 21          constraint_set5_flag                                        0 = 0
  16. [trace_headers @ 0x55a913e38600] 22          reserved_zero_2bits                                        00 = 0
  17. [trace_headers @ 0x55a913e38600] 24          level_idc                                            00011110 = 30
  18. [trace_headers @ 0x55a913e38600] 32          seq_parameter_set_id                                        1 = 0
  19. [trace_headers @ 0x55a913e38600] 33          log2_max_frame_num_minus4                               00101 = 4
  20. [trace_headers @ 0x55a913e38600] 38          pic_order_cnt_type                                          1 = 0
  21. [trace_headers @ 0x55a913e38600] 39          log2_max_pic_order_cnt_lsb_minus4                       00110 = 5
  22. [trace_headers @ 0x55a913e38600] 44          max_num_ref_frames                                        011 = 2
  23. [trace_headers @ 0x55a913e38600] 47          gaps_in_frame_num_allowed_flag                              0 = 0
  24. [trace_headers @ 0x55a913e38600] 48          pic_width_in_mbs_minus1                             000010110 = 21
  25. [trace_headers @ 0x55a913e38600] 57          pic_height_in_map_units_minus1                      000010010 = 17
  26. [trace_headers @ 0x55a913e38600] 66          frame_mbs_only_flag                                         0 = 0    <--- 场编码
  27. [trace_headers @ 0x55a913e38600] 67          mb_adaptive_frame_field_flag                                0 = 0
  28. [trace_headers @ 0x55a913e38600] 68          direct_8x8_inference_flag                                   1 = 1
  29. [trace_headers @ 0x55a913e38600] 69          frame_cropping_flag                                         0 = 0
  30. [trace_headers @ 0x55a913e38600] 70          vui_parameters_present_flag                                 0 = 0
  31. [trace_headers @ 0x55a913e38600] 71          rbsp_stop_one_bit                                           1 = 1
  32. [trace_headers @ 0x55a913e38600] Picture Parameter Set
  33. [trace_headers @ 0x55a913e38600] 0           forbidden_zero_bit                                          0 = 0
  34. [trace_headers @ 0x55a913e38600] 1           nal_ref_idc                                                11 = 3
  35. [trace_headers @ 0x55a913e38600] 3           nal_unit_type                                           01000 = 8
  36. [trace_headers @ 0x55a913e38600] 8           pic_parameter_set_id                                        1 = 0
  37. [trace_headers @ 0x55a913e38600] 9           seq_parameter_set_id                                        1 = 0
  38. [trace_headers @ 0x55a913e38600] 10          entropy_coding_mode_flag                                    0 = 0
  39. [trace_headers @ 0x55a913e38600] 11          bottom_field_pic_order_in_frame_present_flag                1 = 1
  40. [trace_headers @ 0x55a913e38600] 12          num_slice_groups_minus1                                     1 = 0
  41. [trace_headers @ 0x55a913e38600] 13          num_ref_idx_l0_default_active_minus1                      010 = 1
  42. [trace_headers @ 0x55a913e38600] 16          num_ref_idx_l1_default_active_minus1                      010 = 1
  43. [trace_headers @ 0x55a913e38600] 19          weighted_pred_flag                                          0 = 0
  44. [trace_headers @ 0x55a913e38600] 20          weighted_bipred_idc                                        00 = 0
  45. [trace_headers @ 0x55a913e38600] 22          pic_init_qp_minus26                                         1 = 0
  46. [trace_headers @ 0x55a913e38600] 23          pic_init_qs_minus26                                         1 = 0
  47. [trace_headers @ 0x55a913e38600] 24          chroma_qp_index_offset                                      1 = 0
  48. [trace_headers @ 0x55a913e38600] 25          deblocking_filter_control_present_flag                      1 = 1
  49. [trace_headers @ 0x55a913e38600] 26          constrained_intra_pred_flag                                 0 = 0
  50. [trace_headers @ 0x55a913e38600] 27          redundant_pic_cnt_present_flag                              0 = 0
  51. [trace_headers @ 0x55a913e38600] 28          rbsp_stop_one_bit                                           1 = 1
  52. [trace_headers @ 0x55a913e38600] 29          rbsp_alignment_zero_bit                                     0 = 0
  53. [trace_headers @ 0x55a913e38600] 30          rbsp_alignment_zero_bit                                     0 = 0
  54. [trace_headers @ 0x55a913e38600] 31          rbsp_alignment_zero_bit                                     0 = 0
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