jayanji said:If they are using Dolby digital plus, then we get 640 Kbps. Referring to the Dolby technical details from 384 Kbps also Airtel can produce 640 Kbps sound. They were tested this long before. I recorded that & now also I can watch with 640 Kbps.
After decoding original content, they can do anything like encoding to 640kbps Dolby Digital standard (DD+ uses different bitrates). However, it would still be of lower quality even if they just do decoding and encoding (without any additional butchering in between) as both DD and DD+ are lossy compression and every reencoding will cause subsequent degradation of quality.
However I am curious to know when they broadcasted at 640kbps. Let me know the channel and time of the programming, I may also have some recording of then. I am working with them for the past 19 months so they may have done something to try addressing the reported issues which are clearly not bitrate or bandwidth related.