Lookup using track snippets or chunks from a track

[parmymt]

Hello

I'm successfully able to perform look ups if the complete track is fingerprinted.

However, if I send a snippet of the track (I've experimented with 5s to 60s snippets, in 5s increments), no match is returned.

fpcalc has the following options:

Options:
  -format NAME   Set the input format name
  -rate NUM      Set the sample rate of the input audio
  -channels NUM  Set the number of channels in the input audio
  -length SECS   Restrict the duration of the processed input audio (default 120)
  -chunk SECS    Split the input audio into chunks of this duration
  -algorithm NUM Set the algorithm method (default 2)
  -overlap       Overlap the chunks slightly to make sure audio on the edges is fingerprinted
  -ts            Output UNIX timestamps for chunked results, useful when fingerprinting real-time audio stream
  -raw           Output fingerprints in the uncompressed format
  -signed        Change the uncompressed format from unsigned integers to signed (for pg_acoustid compatibility)
  -json          Print the output in JSON format
  -text          Print the output in text format
  -plain         Print the just the fingerprint in text format
  -version       Print version information

The presence of "-length" and "-chunk" possibly indicates that matching is possible with snippets; however my experiments have yielded negative results. Only fingerprinting the whole track appears to work.

Seeing as for -length the default is -120s, I tried an experiment by creating a 120s duration snippet starting 30s into the track, however; this failed too.

To summarise my questions:

1. Is there some combination of fpcalc params I need to use, in order to generate a fingerprint which can be used for track snippet matching?
2. Is there a param for https://api.acoustid.org/v2/lookup, which indicates a track snippet fingerprint is being provided?
3. Is AcousticID designed only to work with the complete track?

Thanks very much in advance for reviewing my post and your response.

[parmymt]

After submitting the previous post I came across the following:

https://acoustid.org/faq

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Can the service identify short audio snippets?

No, it can't. The service has been designed for identifying full audio files. We would like to eventually support also this use case, but it's not a priority at the moment. Note that even when this will be implemented, it will be still intended for matching the original audio (e.g. for the purpose of tracklisting a long audio stream), not audio with background noise recorded on a phone.

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Sorry about that. My next questions are:

1. Are you able to provide details of roughly when this option will be available?
2. Are we able to contribute to the foundation to make this more of a priority?

Thanks, Parmy