新加坡网站制作,形容网站开发的词,seo推广论坛,专家一对一免费咨询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…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 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)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.264endlog(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.https://www.elecard.com/software
