Ah you're right. > 00000000 52 49 46 46 00 00 00 00 57 41 56 45 66 6d 74 20 |RIFF....WAVEfmt | I'll try to hack the file and see what happens. Thanks. On Wed, 6 Oct 2021 at 13:12, Jeff Learman <jjlearman@xxxxxxxxx> wrote: > > Most likely the headers are incorrect. Hex-dump the beginning of the file and see how it looks given this format: http://soundfile.sapp.org/doc/WaveFormat/ > > My guess is that the DATA chunk header has a zero length. If so, it's easily fixed using a hex editor. > > > On Wed, 6 Oct 2021 at 02:51, Lee Jones <ljkenny@xxxxxxxxx> wrote: >> >> It's almost certainly my fault, but I'm perplexed as to how to fix it. >> >> > # File type looks like a standard WAV(E) file >> > ljkenny:~$ file manchester_app_test.wav >> > manchester_app_test.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, stereo 48000 Hz >> > >> > # SoX status reports file as being 0 seconds (it's actually 1:10hrs long. >> > ljkenny:~$ sox manchester_app_test.wav -n stat >> > Samples read: 0 >> > Length (seconds): 0.000000 >> > Scaled by: 2147483647.0 >> > Maximum amplitude: 0.000000 >> > Minimum amplitude: 0.000000 >> > Midline amplitude: 0.000000 >> > Mean norm: -nan >> > Mean amplitude: -nan >> > RMS amplitude: -nan >> > Maximum delta: 0.000000 >> > Minimum delta: 0.000000 >> > Mean delta: -0.000000 >> > RMS delta: -0.000000 >> > Rough frequency: -2147483648 >> > >> > Probably text, not sound >> > >> > # Trimming all silence to 2 seconds >> > ljkenny:~$ sox -V manchester_app_test.wav manchester_app_test-trimmed.wav silence -l 1 0.1 1% -1 2.0 1% >> > sox: SoX v14.4.2 >> > sox INFO formats: detected file format type `wav' >> > >> > Input File : 'manchester_app_test.wav' >> > Channels : 2 >> > Sample Rate : 48000 >> > Precision : 16-bit# File type looks like a standard WAV(E) file >> > ljkenny:~$ file manchester_app_test.wav >> > manchester_app_test.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, stereo 48000 Hz >> > >> > # SoX status reports file as being 0 seconds (it's actually 1:10hrs long. >> > ljkenny:~$ sox manchester_app_test.wav -n stat >> > Samples read: 0 >> > Length (seconds): 0.000000 >> > Scaled by: 2147483647.0 >> > Maximum amplitude: 0.000000 >> > Minimum amplitude: 0.000000 >> > Midline amplitude: 0.000000 >> > Mean norm: -nan >> > Mean amplitude: -nan >> > RMS amplitude: -nan >> > Maximum delta: 0.000000 >> > Minimum delta: 0.000000 >> > Mean delta: -0.000000 >> > RMS delta: -0.000000 >> > Rough frequency: -2147483648 >> > >> > Probably text, not sound >> > >> > # Trimming all silence to 2 seconds >> > ljkenny:~$ sox -V manchester_app_test.wav manchester_app_test-trimmed.wav silence -l 1 0.1 1% -1 2.0 1% >> > sox: SoX v14.4.2 >> > sox INFO formats: detected file format type `wav' >> > >> > Input File : 'manchester_app_test.wav' >> > Channels : 2 >> > Sample Rate : 48000 >> > Precision : 16-bit >> > Sample Encoding: 16-bit Signed Integer PCM >> > Endian Type : little >> > Reverse Nibbles: no >> > Reverse Bits : no >> > >> > sox INFO sox: Overwriting `manchester_app_test-trimmed.wav' >> > >> > Output File : 'manchester_app_test-trimmed.wav' >> > Channels : 2 >> > Sample Rate : 48000 >> > Precision : 16-bit >> > Sample Encoding: 16-bit Signed Integer PCM >> > Endian Type : little >> > Reverse Nibbles: no >> > Reverse Bits : no >> > Comment : 'Processed by SoX' >> > >> > sox INFO sox: effects chain: input 48000Hz 2 channels >> > sox INFO sox: effects chain: silence 48000Hz 2 channels >> > sox INFO sox: effects chain: output 48000Hz 2 channels >> > >> > # Output file is 44 Byes. >> > ljkenny:~$ ls -lh manchester_app_test* >> > -rw-r----- 1 joneslee primarygroup 44 Oct 6 07:41 manchester_app_test-trimmed.wav >> > -rw-r----- 1 joneslee primarygroup 762M Oct 5 19:14 manchester_app_test.wav >> > Sample Encoding: 16-bit Signed Integer PCM >> > Endian Type : little >> > Reverse Nibbles: no >> > Reverse Bits : no >> > >> > sox INFO sox: Overwriting `manchester_app_test-trimmed.wav' >> > >> > Output File : 'manchester_app_test-trimmed.wav' >> > Channels : 2 >> > Sample Rate : 48000 >> > Precision : 16-bit >> > Sample Encoding: 16-bit Signed Integer PCM >> > Endian Type : little >> > Reverse Nibbles: no >> > Reverse Bits : no >> > Comment : 'Processed by SoX' >> > >> > sox INFO sox: effects chain: input 48000Hz 2 channels >> > sox INFO sox: effects chain: silence 48000Hz 2 channels >> > sox INFO sox: effects chain: output 48000Hz 2 channels >> > >> > # Output file is 44 Byes. >> > ljkenny:~$ ls -lh manchester_app_test* >> > -rw-r----- 1 joneslee primarygroup 44 Oct 6 07:41 manchester_app_test-trimmed.wav >> > -rw-r----- 1 joneslee primarygroup 762M Oct 5 19:14 manchester_app_test.wav >> >> Any help would be gratefully received. >> >> >> _______________________________________________ >> Sox-users mailing list >> Sox-users@xxxxxxxxxxxxxxxxxxxxx >> https://lists.sourceforge.net/lists/listinfo/sox-users > > _______________________________________________ > Sox-users mailing list > Sox-users@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/sox-users _______________________________________________ Sox-users mailing list Sox-users@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/sox-users
