bramblepants Wrote:Just out of interest, can you give me an idea as to how much space is saved when removing an audio track (on average) and how long it takes to process each movie?
It really depends on the length of the film and the encoded bitrate, but for each DTS track removed, I gained about 1-1.5 GB, and about half that for AC3 tracks.
It takes about 10-15 minutes to process each movie for me (using the server listed in my signature), but this depends on CPU/RAM of your PC... maybe even hard drive specs as well.
: I was curious... so I did the math...
Most DTS tracks
seem to use a bitrate of around 1500 Kbps, so assuming the movie is say 100 minutes long:
1500 Kilobits/sec * 1024 bits/Kb = 1536000 bits/sec
1536000 bits/sec / 8 bits/byte = 192000 bytes/sec
192000 bytes/sec / 1024 bytes/KB = 187.5 KiloBytes/sec
187.5 KiloBytes/sec * 60 sec/min = 11250 KB/min
11250 KB/min / 1024 KB/MB = 10.98 MB/min
10.98 MB/min * 100 minutes = 1098 MB saved for 100 minute movie
Most AC3 tracks
seem to use a bitrate of around 640 Kbps, so again, assuming the movie is say 100 minutes long:
640 Kilobits/sec * 1024 bits/Kb = 655360 bits/sec
655360 bits/sec / 8 bits/byte = 81920 bytes/sec
81920 bytes/sec / 1024 bytes/KB = 80 KiloBytes/sec
80 KiloBytes/sec * 60 sec/min = 4800 KB/min
4800 KB/min / 1024 KB/MB = 4.69 MB/min
4.69 MB/min * 100 minutes = 469 MB saved for 100min movie
Hopefully that's right... I broke it down in its simplest form so you see how it's fully calculated.