Working hard for 4 days now to fix the google cloud speech to text api to work, but still see no light at the end of the tunnel. Searched on the net a lot, read the documentations a lot but see no result.
Our site is bbsradio.com, we are trying to auto extract transcript from our mp3 files using google speech-to-text api. Code is written on PHP and almost exact copy of this: https://github.com/GoogleCloudPlatform/php-docs-samples/blob/master/speech/src/transcribe_async.php
I see process is completed and its reached out here "$operation->pollUntilComplete();" but its not showing it was successful at "if ($operation->operationSucceeded()) {" and its not returning any error either at $operation->getError().
I am converting the mp3 to raw file like this: ffmpeg -y -loglevel panic -i /public_html/sites/default/files/show-archives/audio-clips-9-23-2020/911freefall2020-05-24.mp3 -f s16le -acodec pcm_s16le -vn -ac 1 -ar 16000 -map_metadata -1 /home/mp3_to_raw/911freefall2020-05-24.raw
While tried with FLAC format as well, not worked. I tested converted FLAC file using windows media player, I can listen conversation clearly. I checked the files its Hz 16000, channel = 1 and its 16 bit. I see file is uploaded in cloud storage. Checked this:
https://cloud.google.com/speech-to-text/docs/troubleshooting and
https://cloud.google.com/speech-to-text/docs/best-practices
There are lot of discussion and documentation, seems nothing is helpful at this moment. If some one can really help me out to find out the issue, it will be really really really great!
At last I found the solution and reason of the issue. Actually getting empty results is a bug of the php api code. What you need to do:
Replace this:
$operation->pollUntilComplete();
by this:
while(!$operation->isDone()){
$operation->pollUntilComplete();
}
Read this: enter link description here