代刷网站只做软件,广告设计公司改建项目,网站建设区域代理,wordpress 名片主题导出H264裸流 安装wireshark下载rtp_h264_extractor.lua脚本配置lua脚本重启wireshark筛选 安装wireshark
下载抓包工具#xff1a;首先#xff0c;您需要下载并安装一个网络抓包工具#xff0c;例如Wireshark#xff08;https://www.wireshark.org#xff09;或tcpdump首先您需要下载并安装一个网络抓包工具例如Wiresharkhttps://www.wireshark.org或tcpdumphttps://www.tcpdump.org。这些工具可用于捕获网络流量并保存为pcap或pcapng文件。在这里插入代码片
打开抓包工具打开所选择的抓包工具并启动网络监控。
下载rtp_h264_extractor.lua脚本
下载rtp_h264_extractor.lua脚本
--[[* rtp_h264_extractor.lua* wireshark plugin to extract h264 stream from RTP packets* * Copyright (C) 2015 Volvet Zhang volvet2002gmail.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)else return 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 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.264endlog(Dumping H264 stream to .. filename)local fp io.open(filename, wb)if fp nil then log(open dump file fail)endlocal function seq_compare(left, right) if math.abs(right.key - left.key) 1000 then return left.key right.key else return left.key right.key end end local 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 then log(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 then log(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 nilend endlocal 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)) end endlocal 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)--log(on_h264_rtp_payload: seq ..tostring(seq.value).., payload len ..tostring(payload.len))table.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) then log(ERROR: payloadTable size is ..tostring(#payloadTable).., seqTable size is ..tostring(#seqTable))returnendif pass 0 then for i, payload in ipairs(payloadTable) domax_packet_count max_packet_count 1endelse packet_count packet_count 1for i, payload in ipairs(payloadTable) doon_h264_rtp_payload(seqTable[1], payload)endif packet_count max_packet_count thenjitter_buffer_finilize()endend endfunction h264_tap.reset()endfunction h264_tap.draw() endlocal function remove() if fp then fp:close()fp nilendh264_tap:remove()end log(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 then fp: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配置lua脚本
下载上述链接中的文件将rtp_h264_extractor.lua文件放到wireshark的安装目录下。然后在wireshark安装目录下的init.lua文件末尾添加 dofile(DATA_DIR…”rtp_h264_extractor.lua”) 并且确保disable_luafalse
重启wireshark 筛选
用wireshark加载选定的视频抓包文件后点击Extra h264 stream from RTP即可将rtp中的视频数据(h264编码格式)导出成h264文件.
请记住由于网络抓包文件通常包含多个协议和数据包因此在导出H.264裸流之前确保仅选择包含H.264数据的数据包以避免保存不相关的数据。此外使用网络抓包工具时请务必遵守适用法律和道德准则并确保合法使用该工具。
