---
title: 码流大小校验失败导致VDEC视频解码失败
description: "调用hi_mpi_vdec_send_stream接口返回错误码HI_ERR_VDEC_ILLEGAL_PARAM，查看应用类日志，有报错“stream len can't be zero!”，日志示例如下："
url: https://www.hiascend.com/document/detail/zh/canncommercial/latest/maintenref/troubleshooting/troubleshooting_0188.html
sourcePath: /source/zh/canncommercial/900/maintenref/troubleshooting/troubleshooting_0188.html
indexId: c90fdb036309bd0364b478bb021bb6c813017a035469da39644c3bfb43e0c49782
---
# 码流大小校验失败导致VDEC视频解码失败

#### 问题现象描述

调用hi_mpi_vdec_send_stream接口返回错误码HI_ERR_VDEC_ILLEGAL_PARAM，查看应用类日志，有报错“stream len can't be zero!”，日志示例如下：

```
[Vdec]:vdec_check_send_stream [Line]:6563 pid 578 usr chn 64 device 0 chn 64 stream len can't be zero!
```


#### 原因分析

查看日志中报错stream len can't be zero!，被VDEC代码参数校验拦截，建议排查传入的参数stream->len或stream->addr是否合法。


#### 解决方法

检查代码中的stream->len参数值，发现len为0，修改参数赋值代码逻辑。