当前位置: 首页 > news >正文

用Wireshark解码H.264

H264,你不知道的小技巧-腾讯云开发者社区-腾讯云

这篇文章写的非常好

这里仅做几点补充

init.lua内容:

-- Set enable_lua to false to disable Lua support.
enable_lua = trueif not enable_lua thenreturn
end-- If false and Wireshark was started as (setuid) root, then the user
-- will not be able to execute custom Lua scripts from the personal
-- configuration directory, the -Xlua_script command line option or
-- the Lua Evaluate menu option in the GUI.
-- Note: Not checked on Windows. running_superuser is always false.
--run_user_scripts_when_superuser = truedofile(DATA_DIR.."rtp_h264_extractor.lua")

init.lua放到了这个目录:

C:\Program Files\Wireshark\plugins

rtp_h264_extractor.lua内容为:


--[[* rtp_h264_extractor.lua* wireshark plugin to extract h264 stream from RTP packets** Copyright (C) 2015 Volvet Zhang <volvet2002@gmail.com>** rtp_h264_extractor is free software; you can redistribute it and/or* modify it under the terms of the GNU Lesser General Public* License as published by the Free Software Foundation; either* version 2.1 of the License, or (at your option) any later version.** rtp_h264_extractor is distributed in the hope that it will be useful,* but WITHOUT ANY WARRANTY; without even the implied warranty of* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU* Lesser General Public License for more details.** You should have received a copy of the GNU Lesser General Public* License along with FFmpeg; if not, write to the Free Software* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA*]]dolocal MAX_JITTER_SIZE = 50local h264_data = Field.new("h264")local rtp_seq = Field.new("rtp.seq")local function extract_h264_from_rtp()local function dump_filter(fd)local fh = "h264";if fd ~= nil and fd ~= "" thenreturn string.format("%s and (%s)", fh, fd)elsereturn fhendendlocal h264_tap = Listener.new("ip", dump_filter(get_filter()))local text_window = TextWindow.new("h264 extractor")local filename = ""local seq_payload_table = { }local pass = 0local packet_count = 0local max_packet_count = 0local fu_info = nillocal pre_seq = 0;local function log(info)text_window:append(info)text_window:append("\n")end-- get_preference is only available since 3.5.0if get_preference thenfilename = get_preference("gui.fileopen.dir") .. "/" .. os.date("video_%Y%m%d-%H%M%S.264")elsefilename = "dump.264"endlog("Dumping H264 stream to " .. filename)local fp = io.open(filename, "wb")if fp == nil thenlog("open dump file fail")endlocal function seq_compare(left, right)if math.abs(right.key - left.key) < 1000 thenreturn left.key < right.keyelsereturn left.key > right.keyendendlocal function dump_single_nal(h264_payload)fp:write("\00\00\00\01")fp:write(h264_payload:tvb()():raw())fp:flush()endlocal function dump_fu_a(fu_info)if  fu_info.complete ==  true thenlog("dump_fu_a")fp:write("\00\00\00\01")fp:write(string.char(fu_info.nal_header))for i, obj in ipairs(fu_info.payloads) dofp:write(obj:tvb()():raw(2))endfp:flush()elselog("Incomplete NAL from FUs, dropped")endendlocal function handle_fu_a(seq, h264_data)fu_indicator = h264_data:get_index(0)fu_header = h264_data:get_index(1)nal_header = bit.bor(bit.band(fu_indicator, 0xe0), bit.band(fu_header, 0x1f))if bit.band(fu_header, 0x80) ~= 0 then-- fu start flag foundfu_info = { }fu_info.payloads = { }fu_info.seq = seqfu_info.complete = truefu_info.nal_header = nal_headertable.insert(fu_info.payloads, h264_data)log("Fu start: seq = "..tostring(seq))returnendif fu_info == nil thenlog("Incomplete FU found: No start flag, dropped")returnendif seq ~= (fu_info.seq + 1)% 65536 thenlog("Incomplete FU found:  fu_info.seq = "..tostring(fu_info.seq)..", input seq = "..tostring(seq))fu_info.complete = false;returnendfu_info.seq = seqtable.insert(fu_info.payloads, h264_data)if bit.band(fu_header, 0x40) ~= 0 then-- fu end flag foundlog("Fu stop: seq = "..tostring(seq))dump_fu_a(fu_info)fu_info = nilendendlocal function handle_stap_a(h264_data)log("start dump stap nals")offset = 1		-- skip nal header of STAP-Arepeatsize = h264_data:tvb()(offset, 2):uint()offset = offset + 2local next_nal_type = bit.band(h264_data:get_index(offset), 0x1f)log("STAP-A has naltype = "..next_nal_type..", size = "..size)fp:write("\00\00\00\01")fp:write(h264_data:tvb()():raw(offset, size))offset = offset + sizeuntil offset >= h264_data:tvb():len()fp:flush()log("finish dump stap nals")endlocal function on_ordered_h264_payload(seq, h264_data)local naltype = bit.band(h264_data:get_index(0), 0x1f)if naltype > 0 and naltype < 24 then-- Single NAL unit packetif fu_info ~= nil thenlog("Incomplete FU found: No start flag, dropped")fu_info = nilenddump_single_nal(h264_data)--log("tap.packet: "..", single nal packet dumpped, naltype = "..tostring(naltype)..", len = "..tostring(packet.len))elseif naltype == 28 then-- FU-Ahandle_fu_a(seq, h264_data)elseif naltype == 24 then-- STAP-Aif fu_info ~= nil thenlog("Incomplete FU found: No start flag, dropped")fu_info = nilendhandle_stap_a(h264_data)elselog("tap.packet: "..", Unsupported nal, naltype = "..tostring(naltype))endendlocal function on_jitter_buffer_output()table.sort(seq_payload_table, seq_compare)if #seq_payload_table > 0 thenlog("on_jitter_buffer_output:  seq = "..tostring(seq_payload_table[1].key)..", payload len = "..tostring(seq_payload_table[1].value:len()))on_ordered_h264_payload(seq_payload_table[1].key, seq_payload_table[1].value)table.remove(seq_payload_table, 1)endendlocal function jitter_buffer_finilize()for i, obj in ipairs(seq_payload_table) dolog("jitter_buffer_finilize:  seq = "..tostring(obj.key)..", payload len = "..tostring(obj.value:len()))on_ordered_h264_payload(obj.key, obj.value)endendlocal function on_h264_rtp_payload(seq, payload)local cur_seq = seq.value--log("on_h264_rtp_payload:  seq = "..tostring(seq.value)..", payload len = "..tostring(payload.len)..",pre_seq = "..pre_seq..",cur_seq = "..cur_seq..",packet_count = "..packet_count)if packet_count == 0 thenpre_seq = cur_seqelseif cur_seq == pre_seq thenpacket_count = packet_count + 1--log("on_h264_rtp_payload, duplicate seq = "..tostring(seq.value)..",packet_count = "..packet_count)returnelsepre_seq = cur_seqendendpacket_count = packet_count + 1table.insert(seq_payload_table, { key = tonumber(seq.value), value = payload.value })--log("on_h264_rtp_payload: table size is "..tostring(#seq_payload_table))if #seq_payload_table > MAX_JITTER_SIZE thenon_jitter_buffer_output()endendfunction h264_tap.packet(pinfo, tvb)local payloadTable = { h264_data() }local seqTable = { rtp_seq() }if (#payloadTable) < (#seqTable) thenlog("ERROR: payloadTable size is "..tostring(#payloadTable)..", seqTable size is "..tostring(#seqTable))returnendif pass == 0 thenfor i, payload in ipairs(payloadTable) domax_packet_count = max_packet_count + 1endelsefor i, payload in ipairs(payloadTable) doon_h264_rtp_payload(seqTable[1], payload)endif packet_count == max_packet_count thenjitter_buffer_finilize()endendendfunction h264_tap.reset()endfunction h264_tap.draw()endlocal function remove()if fp thenfp:close()fp = nilendh264_tap:remove()endlog("Start")text_window:set_atclose(remove)log("phase 1")pass = 0retap_packets()log("phase 2:  max_packet_count = "..tostring(max_packet_count))pass = 1retap_packets()if fp ~= nil thenfp:close()fp = nillog("Video stream written to " .. filename)endlog("End")endregister_menu("Extract h264 stream from RTP", extract_h264_from_rtp, MENU_TOOLS_UNSORTED)
end

该文件放到了这里:

C:\Program Files\Wireshark

此外,Elecard StreamEye Tools可以到这里下载:

Download video analysis and monitoring applications| Elecard: Video Compression GuruDownload Elecard products for video analysis and monitoring, encoding and decoding video of various formats.icon-default.png?t=N7T8https://www.elecard.com/software

相关文章:

用Wireshark解码H.264

H264&#xff0c;你不知道的小技巧-腾讯云开发者社区-腾讯云 这篇文章写的非常好 这里仅做几点补充 init.lua内容&#xff1a; -- Set enable_lua to false to disable Lua support. enable_lua trueif not enable_lua thenreturn end-- If false and Wireshark was start…...

Flink中几个关键问题总结

硬核&#xff01;八张图搞懂 Flink 端到端精准一次处理语义 Exactly-once&#xff08;深入原理&#xff0c;建议收藏&#xff09; Flink可靠性的基石-checkpoint机制详细解析 硬核&#xff01;一文学完Flink流计算常用算子&#xff08;Flink算子大全&#xff09;...

华为配置ARP安全综合功能实验

华为配置ARP安全综合功能实验 组网图形 图1 配置ARP安全功能组网图 ARP安全简介配置注意事项组网需求配置思路操作步骤配置文件 ARP安全简介 ARP&#xff08;Address Resolution Protocol&#xff09;安全是针对ARP攻击的一种安全特性&#xff0c;它通过一系列对ARP表项学…...

new mars3d.layer.XyzLayer({的rectangle瓦片数据的矩形区域范围说明

new mars3d.layer.XyzLayer({的rectangle瓦片数据的矩形区域范围说明 2.这个xyz图层的矩形区域范围rectangle从图层文件中无法获取&#xff0c;但是看图层文件可以知道这个是12-21级的数据。 3.一般这个图层数据文件服务会有提供相应的rectangle范围&#xff0c;在服务的xml文…...

数据分析之Tebleau可视化:折线图、饼图、环形图

1.折线图的绘制 方法一&#xff1a; 拖入订单日期和销售金额&#xff0c;自动生成一个折线图 方法二&#xff1a; 选中订单日期和销售金额&#xff08;摁住ctrl可以选择多个纬度&#xff09; 点击右边的智能推荐&#xff0c;选择折线图 2.双线图的绘制、双轴的设置 方法一&…...

【Frida】【Android】 07_爬虫之网络通信库HttpURLConnection

&#x1f6eb; 系列文章导航 【Frida】【Android】01_手把手教你环境搭建 https://blog.csdn.net/kinghzking/article/details/136986950【Frida】【Android】02_JAVA层HOOK https://blog.csdn.net/kinghzking/article/details/137008446【Frida】【Android】03_RPC https://bl…...

算法2.6基数排序

基数排序 属于分配式排序,又称桶子法,通过键值的各个位上的值,将要排序的元素分配至某些桶中,达到排序的作用. 基数排序属于稳定性排序,是效率高的稳定性排序法 是桶排序的扩展,将整数按照位数进行切割,再按各个位数进行比较 是用空间换时间的经典算法 在使用8kw个数据进行…...

redis -List

一&#xff0c;List(列表) 1&#xff0c;所应用场景 list实际上是一个链表&#xff0c;before Node after , left, right 都可以插入值如果key不存在&#xff0c;则创建新的链表如果key存在&#xff0c;新增内容如果移除了所有值&#xff0c;空链表&#xff0c;也代表不存在在…...

ARMv8-A架构下的外部debug模型(external debug)简介

Armv8-A external debug Armv8-A debug模型一&#xff0c;外部调试 External debug 简介二&#xff0c;Debug state2.1 Debug state的进入与退出 三&#xff0c;DAP&#xff0c;Debug Access Port3.1 EDSCR, External Debug Status and Control Register调试状态标识&#xff0…...

DevOps入门

DevOps入门 1. 基础概念和原则 了解DevOps的定义、历史和主要目标 DevOps是一种将软件开发(Dev)与信息技术运维(Ops)结合起来的文化、运动或实践,旨在缩短系统开发生命周期,同时提供高质量的持续交付。DevOps的历史可以追溯到敏捷软件开发的兴起,它强调了开发和运维团队之…...

Docker搭建私有镜像仓库

1.Docker镜像仓库 搭建镜像仓库可以基于Docker官方提供的DockerRegistry来实现。 官网地址&#xff1a;https://hub.docker.com/_/registry 1.1.简化版镜像仓库 Docker官方的Docker Registry是一个基础版本的Docker镜像仓库&#xff0c;具备仓库管理的完整功能&#xff0c;…...

流行的API架构学习

几种流行的API架构风格图 SOAP&#xff08;Simple Object Access Protocol&#xff09; 优点&#xff1a;SOAP 是一种基于 XML 的通信协议&#xff0c;具有良好的跨平台和跨语言支持。它提供了丰富的安全性和事务管理功能&#xff0c;并支持复杂的消息交换模式。 缺点&#xf…...

问题解决:Fatal Python error: initfsencoding: unable to load the file system codec

问题&#xff1a; "D:\...Climb_C_site\venv\Scripts\python.exe" "D:\...\Small_Case\change_suffix.py" Fatal Python error: initfsencoding: unable to load the file system codec ModuleNotFoundError: No module named encodingsCurrent thread 0x…...

WPF —— TreeView树形控件

1 TreeView简介 TreeView 表示一个控件&#xff0c;该控件在树结构&#xff08;其中的项可以展开和折叠&#xff09;中显示分层数据。 TreeView 是一个 ItemsControl&#xff0c;这意味着它可以包含任何类型的对象的集合 (&#xff0c;例如字符串、图像或面板) 。 2 Tree Vie…...

2024.2.20力扣每日一题——从前序和中序遍历序列构建二叉树

2024.2.20 题目来源我的题解方法一 递归方法二 迭代 题目来源 力扣每日一题&#xff1b;题序&#xff1a;105 我的题解 方法一 递归 前序特点&#xff1a;[ 根节点, [左子树的前序遍历结果], [右子树的前序遍历结果] ]中序特点&#xff1a;[ [左子树的中序遍历结果], 根节点…...

c++ 小游戏(2种)

目录 介绍 游戏1 游戏2 介绍 因为DEV C的编译环境较小&#xff0c;所以大部分的游戏代码都无法在此上运行&#xff0c;我收集了一部分摸鱼小游戏的源码&#xff0c;在此呈现&#xff0c;如果有能在DEV C上运行的我会先作声明&#xff1a; 游戏1 扫雷 #include<stdio.…...

电阻详解:定义、公式、影响因素及电阻器类型解析

电阻定义 电阻是指当电流通过导体时&#xff0c;导体对电流流动所呈现的阻碍作用的物理量。它是电路元件的一个基本参数&#xff0c;用于量化导体阻止电荷定向移动的能力。#电阻#的大小决定了通过导体的电流与两端电压之间的关系&#xff0c;遵循欧姆定律&#xff0c;即在恒定…...

LabVIEW动车组谐波分析与检测系统

LabVIEW动车组谐波分析与检测系统 随着中国高速铁路网络的快速发展&#xff0c;动车组数量和运行速度的不断提升&#xff0c;其产生的谐波问题对电网产生了不小的影响。基于图形化编程语言LabVIEW&#xff0c;开发了一套动车组谐波分析与检测系统&#xff0c;旨在实时监控与分…...

H5移动端 Vue3 + vue-virtual-scroller 实现长列表性能优化

文章目录 安装 vue-virtual-scroller引入&#x1f4e2;注意事项使用基础使用上拉加载下拉刷新 移动端在渲染长列表时 大量dom节点的渲染和重绘重排会导致页面卡顿、滚动不流畅、设备耗电加快、影响移动设备电池寿命等性能问题 这里分享使用【虚拟滚动】方案进行长列表优化&…...

第20章-IP路由原理

目录 1. 概述 2. 路由表 3. 查表规则 4. 路由来源类型 5. 路由优先级 6. 路由的度量值 7. 路由器写表规则 1. 概述 1. 定义 路由器:异构网络互联机制; 路由:指导路由器如何进行数据发送的路径信息; 路由表:目的地址、下一跳、出接口等; 2. IP连通的条件 沿途的每…...

从PTA天梯赛L1真题看起:新手如何用C++快速搞定编程竞赛里的“送分题”?

从PTA天梯赛L1真题看起&#xff1a;新手如何用C快速搞定编程竞赛里的“送分题”&#xff1f; 第一次参加编程竞赛的新手&#xff0c;面对屏幕上密密麻麻的题目&#xff0c;往往会感到无从下手。但仔细观察历届PTA天梯赛L1级别的题目&#xff0c;你会发现一个有趣的现象——总有…...

深度学习训练中loss震荡与不收敛的常见原因及实战调优策略

1. 为什么你的模型loss像过山车&#xff1f;先看懂这些典型症状 第一次打开TensorBoard看到自己的loss曲线像心电图一样上蹿下跳&#xff0c;那种感觉就像新手司机开车时方向盘失控。其实loss震荡和不收敛是深度学习中再常见不过的问题&#xff0c;但不同表现背后藏着完全不同的…...

文本风格转换技术:数字手写化工具的创新应用与实践指南

文本风格转换技术&#xff1a;数字手写化工具的创新应用与实践指南 【免费下载链接】text-to-handwriting So your teacher asked you to upload written assignments? Hate writing assigments? This tool will help you convert your text to handwriting xD 项目地址: h…...

解决系统卡顿的5个Mem Reduct内存优化技巧

解决系统卡顿的5个Mem Reduct内存优化技巧 【免费下载链接】memreduct Lightweight real-time memory management application to monitor and clean system memory on your computer. 项目地址: https://gitcode.com/gh_mirrors/me/memreduct 你的电脑是否经常在打开多…...

2026论文写作工具红黑榜:AI论文工具怎么选?用数据说话!

2026年论文写作工具红黑榜出炉&#xff0c;千笔AI、ThouPen、豆包位列红榜&#xff0c;适配国内学术规范&#xff0c;助力高效科研。黑榜需避开低质免费工具、无真实引用平台及过度依赖全文生成的工具。选择时建议按需求匹配度 - 数据可信度 - 成本承受力三维模型进行评估。 一…...

150万规模!深势开源科学图像界ImageNet,AI终于能看懂论文图表了

150 万图文对、500 万子图&#xff0c;全面覆盖 300 科学子学科。深势开源 OmniScience&#xff0c;让 AI 真正读懂科研文献图表。跨越“盲区”&#xff1a;让AI真正读懂科学影像在科学研究日益数字化的今天&#xff0c;大模型已经能够高效处理书籍与文献中的文本信息。不过&am…...

NaViL-9B图文问答教程:从单图理解到多图对比分析的进阶用法

NaViL-9B图文问答教程&#xff1a;从单图理解到多图对比分析的进阶用法 1. 认识NaViL-9B多模态模型 NaViL-9B是一款原生支持多模态交互的大语言模型&#xff0c;能够同时处理文本和图像输入。与传统的纯文本模型不同&#xff0c;它可以直接"看懂"图片内容&#xff…...

OpenClaw长期运行秘诀:GLM-4.7-Flash任务守护与自动恢复机制

OpenClaw长期运行秘诀&#xff1a;GLM-4.7-Flash任务守护与自动恢复机制 1. 为什么需要长期运行方案&#xff1f; 去年冬天的一个深夜&#xff0c;我被手机警报惊醒——OpenClaw在连续处理300多份文档后突然崩溃&#xff0c;导致凌晨的自动化报表任务全部中断。这次事故让我意…...

告别每次手动连WiFi!NVIDIA Jetson NX保姆级无线网络配置与静态IP绑定教程

NVIDIA Jetson NX无线网络配置与静态IP绑定全攻略 刚拿到NVIDIA Jetson NX开发板的开发者们&#xff0c;是否还在为每次开机都要手动连接WiFi而烦恼&#xff1f;是否因为DHCP分配的IP地址频繁变动&#xff0c;导致SSH远程连接中断而抓狂&#xff1f;本文将彻底解决这两个痛点&a…...

AR.js测试自动化终极指南:使用WebDriverIO进行高效AR应用功能测试

AR.js测试自动化终极指南&#xff1a;使用WebDriverIO进行高效AR应用功能测试 【免费下载链接】AR.js Image tracking, Location Based AR, Marker tracking. All on the Web. 项目地址: https://gitcode.com/gh_mirrors/arj/AR.js AR.js是一个强大的Web增强现实库&…...