RTP数据分析

最新推荐文章于 2025-02-02 22:11:09 发布

转载最新推荐文章于 2025-02-02 22:11:09 发布 · 3k 阅读

VOIP 专栏收录该内容

75 篇文章

订阅专栏

本文提供了一种使用Wireshark捕获RTP数据并利用rtptool和VoiceAge软件进行G.729语音流解码的方法。通过两种不同的步骤详细介绍了如何将捕获的数据转换为可播放的PCM文件，并推荐了播放软件。

How to decode and playback G729 audio streams:

http://wiki.media5corp.com/wiki/index.php?title=Debug_%26_Troubleshooting_-_How_to_decode_and_playback_G729_audio_streams

使用wildpackets omnipeek、wireshark、rtptool、voice_age 分析G.729语音质量:

G.729
方法一：
1 ：wireshark： Capture the traffic using Etherealand dumping the RTP data (Statistics -> RTP -> Show all streams ->SaveAs)。
2：Use rtpdump (http://www.cs.columbia.edu/IRT/software/rtptools/)to dump only the audio payload (“rtpdump -F payload -f in.rtp -o out.rtp”)
3：Use VoiceAge decoder. In windows CMD, (va_g729_decoder.exe out.rtp out.pcm).
4: Play out.pcm useing cool edit pro 2.0 or GoldWave 16bit signed/unsigned 8000Hz.

方法二：1 ：wireshark： Capture the traffic using Etherealand dumping the RTP data (Statistics -> RTP -> Show all streams ->analyze->--Save Payload( select .raw and forward))。注分析前需要去掉DTMF-Rtpevent，否则影响最终的729decode.
2：Use VoiceAge decoder. In windows CMD, (va_g729_decoder.exe out.raw out.pcm).
3: Play out.pcm useing cool edit pro 2.0 or GoldWave 16bit signed/unsigned 8000Hz.

- signed 16-bit pc

- no endianness

- 1 channel (mono)

- start offset: 0

- amount to import: 100%

- sample rate: 8000

Wireshark Sniffing: SIP and RTP

http://www.unappel.ch/public/100119-wireshark-xlite/

How to save RTP Streams from Wireshark and Play it using an application called Audacity - See more at: https://supportforums.cisco.com/discussion/11517891/how-save-rtp-streams-wireshark-and-play-it-using-application-called-audacity#sthash.7EYWGCYp.dpuf

https://supportforums.cisco.com/discussion/11517891/how-save-rtp-streams-wireshark-and-play-it-using-application-called-audacity