Increase the volume/Remove a part of recorded audio from a recorded session
Many-a-times people face an issue where the volume in a recorded session isn’t loud enough to be clearly audible to everybody.. Similarly there may be times when you may want to remove a part of the recorded audio from the recording.. Here is a solution which although may not be the easiest but definitely a working one for most of the users..
After the recording is finished, pull down the recording source files by adding ‘output/yournamehere.zip?download=zip‘ to the recording URL. In the zip that comes down, there will be either a MP3 audio file (if you recorded your audio via an integrated phone bridge) or a FLV file labeled cameraVoip_X_X (if you recorded your audio via VoIP or Universal Voice).
The MP3 file is easy to modify and place back into the zip file, while the FLV may take some work since you will have to extract the MP3 from the FLV and then put it back in the FLV before placing it back in the ZIP. Once you have modified the audio, re-upload the zip to Connect(as Content in Content library) and you will have a new version of your recording with improved audio.
If you need to remove audio, just replace it with silence.
* Word of caution, don’t change the length of the audio file or it will be out of sync with the rest of your recording.