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Gapless mp3 files Dark Side of the Moon (iTunes ripped/encoded) NOT playing gapless!
#3
(10-30-2021, 10:21 PM)dwrae Wrote: There can be only problem and that is that the duration in the file is not matching the actual audio data being present. So in reality, there is probably a silent gap at the end of the file. UAPP plays all data to the end, not looking at the duration.

I have no idea how to determine that. I don't know the MP3 format specification or how to decode the audio information - that's why I use apps like UAPP that I paid for.

The main question is: Does USB Audio Player Pro support playing iTunes ripped and MP3-encoded gapless CD's like Pink Floyd's Dark Side of the Moon or does it not support playing iTunes ripped and MP3-encoded gapless CD's like Pink Floyd's Dark Side of the Moon? In my limited usage of the app so far, it seems that iTunes ripped and MP3-encoded gapless CD's are not supported to be played gapless.

In my limited research of the topic, I did find some information that points to ID3 tags that iTunes creates/uses with regard to gapless playback, namely the iTunPGAP, iTunNORM, and iTunSMPB tags. Of these, from what I've read, the most important is the iTunSMPB tag that may contain information on encoder delay. Here are a couple of links I found on the topic:

Link 1 on iTunes ID3 tags related to gapless playback

Link 2 on iTunes ID3 tags related to gapless playback

Again, as a reference point, when I use the foobar2000 Android app on the same phone with the same MP3 files, it plays them back gaplessly, so that app is either using the iTunes ID3 tag information or it is using some other method to determine gapless playback.

Unfortunately, I no longer have the source CD's any more since I lost them in a house fire more than a decade ago so I wouldn't be able to re-encode even if I wanted to.

Regards.

P.S. I am attaching metadata captured from running the ffprobe command line utility included with ffmpeg showing the metadata of the first two tracks of the Dark Side of the Moon CD that are supposed to be gapless between them, and includes the iTunes ID3 tags for more information.

.txt   gapless-itunes-metadata.txt (Size: 1.92 KB / Downloads: 0)
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RE: Gapless mp3 files Dark Side of the Moon (iTunes ripped/encoded) NOT playing gapless! - by b00h00 - 10-31-2021, 05:23 AM

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