Exiftool reports on a video file the following two tags for one of the audio tracks:
What is the difference between 'output sample rate' and 'sample rate'?Code:Audio Sample Rate : 24000 Output Audio Sample Rate : 48000
Exiftool reports on a video file the following two tags for one of the audio tracks:
What is the difference between 'output sample rate' and 'sample rate'?Code:Audio Sample Rate : 24000 Output Audio Sample Rate : 48000
Last edited by Mario F.; 06-16-2016 at 06:45 PM.
Originally Posted by brewbuck:
Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.
I'm thinking the audio track is going to be upsampled. If that happens then the tool recorded what it is and what the output sample rate will be.
That makes sense, indeed. All other audio tracks are 48 KHz.
So this means that video or audio players can convert audio samples on the fly? I had this notion that audio sampling always had to be pre-recorded.
Last edited by Mario F.; 06-16-2016 at 07:37 PM.
Originally Posted by brewbuck:
Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.
Sure you can. The audio samples represents a sine curve, having sampled different points along the curve at different points in time. We reconstruct this curve from the sample data, but we could also try to "guess" how the curve looks like by using interpolation between samples. By inventing more samples and adding them to the list of samples, we change the samplerate.
Originally Posted by Adak
Ok, thanks both
This is an area where I have virtually zero knowledge about. Video and audio still mystifies me.
Originally Posted by brewbuck:
Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.
