问题现象描述

• 问题现象：

  使用昇腾310 AI处理器或昇腾910 AI处理器时，视频解码丢帧，出现重影或不连续现象。查看Device侧日志，发现日志中存在以下几个报错的内容信息中的一个或多个。

  • 日志报错信息（1）

    [ERROR] DVPP:2020-12-31-23:51:51.339.518 [VDEC][PPSSPSCheckTmpId:7065][T3]  PPSSPSCheckTmpId: pps with this pic_parameter_set_id = 0 haven't decode
    [ERROR] DVPP:2020-12-31-23:51:51.339.616 [VDEC][ProcessSliceHeaderFirstPart:7627][T3]  PPS or SPS of this slice not valid
    [ERROR] DVPP:2020-12-31-23:51:51.339.678 [VDEC][InquiresSlceProperty:10582][T3]  sliceheader dec err

  • 日志报错信息（2）

    [ERROR] DVPP:2020-12-31-20:51:51.318.218 [VDEC][InitPic:6039][T3]  line 6039: frame gap(=48) > dpb size(=2)
    [ERROR] DVPP:2020-12-31-20:51:51.318.266 [VDEC][H264_DecSlice:8238][T3]  init pic err, find next recover point or next valid sps, pps, or exit
    [ERROR] DVPP:2020-12-31-20:51:51.318.336 [VDEC][H264_DecOneNal:10077][T3]  DecList error, ret=-1
    [ERROR] DVPP:2020-12-31-20:51:51.318.392 [VDEC][ReceivePacket:10400][T3]  nal_release-err

  • 日志报错信息（3）

    [ERROR] DVPP:2020-12-31-20:30:22.188.008 [VDEC][InitListX:4513][T3]  for P slice size of list equal 0.
    [ERROR] DVPP:2020-12-31-20:30:22.188.056 [VDEC][DecList:4832][T3] line: 4832 InitListX failed
    [ERROR] DVPP:2020-12-31-20:30:22.188.128 [VDEC][H264_DecSlice:8260][T3] DecList error, ret=-1
    [ERROR] DVPP:2020-12-31-20:30:22.188.199 [VDEC][H264_DecOneNal:10077][T3] Decoder Slice failed

  • 日志报错信息（4）

    [ERROR] DVPP:2020-12-31-10:20:28.528.090 [VDEC][InitListX:4653][T3] for B slice size of two list all equal 0.
    [ERROR] DVPP:2020-12-31-10:20:28.528.168 [VDEC][DecList:4830][T3] line: 4832 InitListX failed
    [ERROR] DVPP:2020-12-31-10:20:28.528.266 [VDEC][H264_DecSlice:8257][T3] DecList error, ret=-1

  • 日志报错信息（5）

    [ERROR] DVPP:2020-12-31-10:30:22.130.500 [VDEC][HEVC_VpsSpsPpsCheck:8084][T10] pps with this pic_parameter_set_id = 0 haven't be decoded
    [ERROR] DVPP:2020-12-31-10:30:22.130.598 [VDEC][HEVC_DecSliceSegmentHeader:2793][T10] HEVC_VpsSpsPpsCheck != HEVC_DEC_NORMAL
    [ERROR] DVPP:2020-12-31-10:30:22.130.686 [VDEC][HEVC_InquireSliceProperty:10169][T10] HEVC_DecSliceSegmentHeader dec err
    [ERROR] DVPP:2020-12-31-10:30:22.130.789 [VDEC][HEVCDEC_DecodePacket:753][T10] HEVC_InquireSliceProperty error.

  • 日志报错现象（6）

    [ERROR] DVPP:2020-12-31-11:22:28.800.158 [VDEC][HEVC_RefPicProcess:2480][T10] Ref frame(poc 15) lost.
    [ERROR] DVPP:2020-12-31-11:22:28.800.236 [VDEC][HEVC_CreateLostPicture:6392][T10] DPB no suited fs for lost pic.
    [ERROR] DVPP:2020-12-31-11:22:28.800.352 [VDEC][HEVC_RefPicProcess:2480][T10] Ref frame(poc 18) lost.
    [ERROR] DVPP:2020-12-31-11:22:28.800.426 [VDEC][HEVC_CreateLostPicture:6392] [T10] DPB no suited fs for lost pic.
    [ERROR] DVPP:2020-12-31-11:22:28.800.522 [VDEC][HEVC_RefPicProcess:2480] [T10] Ref frame(poc 18) lost.

  • 日志报错信息（7）

    [ERROR] DVPP:2020-12-31-11:56:35.038.109 [VDEC][HEVC_RefPicProcess:2480] [T56] Ref frame(poc 15) lost.
    [ERROR] DVPP:2020-12-31-11:56:35.038.283 [VDEC][HEVC_CreateLostPicture:6392] [T56] Take poc(17) to create lost poc(15).
    [ERROR] DVPP:2020-12-31-11:56:35.038.502 [VDEC][FSP_SetRef:934] [T56] check condition: pstLogicFs->IsDummyFs == 0 fail
    [ERROR] DVPP:2020-12-31-11:56:35.038.801 [VDEC][FSP_SetRef:934] [T56] check condition: pstLogicFs->IsDummyFs == 0 fail
    [ERROR] DVPP:2020-12-31-11:56:35.039.128 [VDEC][FSP_SetRef:934] [T56] check condition: pstLogicFs->IsDummyFs == 0 fail

原因分析

分析上述日志报错信息现象，分别可能存在以下可能原因：

• 日志报错信息（1）可能原因：H264码流缺少IDR帧
• 日志报错信息（2）可能原因：H264码流缺少I帧
• 日志报错信息（3）可能原因：H264码流缺少P帧
• 日志报错信息（4）可能原因：H264码流缺少B帧
• 日志报错信息（5）可能原因：H265码流缺少IDR帧
• 日志报错信息（6）可能原因：H265码流缺少P帧
• 日志报错信息（7）可能原因：H265码流缺少I帧或者B帧

解决措施

针对可能原因分析，参考以下步骤处理：

1. 检查输入的源码流是否有问题。

使用第三方工具（如：eseye u）对输入码流进行检查，查看码流是否异常。