Hi,
To find recording source/ device, initially I assumed that recorder information may be available in the metadata of recorded file. for this purpose I do audio recording on different mobile phones and upload on different social media platforms. After downloading the uploaded files, I analyse its metadata. From experimental results I reach to a conclusion that before uploading to social media platforms, we need to convert audio to video. The convertor replace the original metadata with its own new flags and values. So, it is not true to rely on metadata information and find recording source.
Now I am in search of some new techniques to find out some features/ parameters in the audio recordings that can discriminate different recording devices i.e. mobile phones (samsung, Iphone, infinix, Huwavie, redmi etc) and other recorders. Any help would be highly appreciated.
Haider.
If the file has been converted and the metadata replaced, then there is no way to figure out the original source. There's no magical way to detect different recording devices if the metadata is gone.
If the video is MP4/Mov, then you can use exiftool to copy data from the the original audio file, but because audio metadata is different than video metadata and there isn't a direct correlation between the two, you have to decide the tags in the video you want to store the audio metadata.