ffmpeg started on 2017-02-17 at 02:17:18
Report written to "ffmpeg-20170217-021718.log"
Command line:
/home/pi/special/ffmpeg/ffmpeg -loglevel debug -report -f alsa -ac 2 -acodec pcm_s32le -i mic_sv -f null -
ffmpeg version git-2017-02-05-e57fd92 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 4.9.2 (Raspbian 4.9.2-10)
  configuration: --extra-cflags=-I/opt/vc/include/IL --enable-nonfree --enable-omx-rpi --logfile=CONFIG.TXT
  libavutil      55. 46.100 / 55. 46.100
  libavcodec     57. 75.100 / 57. 75.100
  libavformat    57. 66.101 / 57. 66.101
  libavdevice    57.  2.100 / 57.  2.100
  libavfilter     6. 73.100 /  6. 73.100
  libswscale      4.  3.101 /  4.  3.101
  libswresample   2.  4.100 /  2.  4.100
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'alsa'.
Reading option '-ac' ... matched as option 'ac' (set number of audio channels) with argument '2'.
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'pcm_s32le'.
Reading option '-i' ... matched as input url with argument 'mic_sv'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'null'.
Reading option '-' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Applying option report (generate a report) with argument 1.
Successfully parsed a group of options.
Parsing a group of options: input url mic_sv.
Applying option f (force format) with argument alsa.
Applying option ac (set number of audio channels) with argument 2.
Applying option acodec (force audio codec ('copy' to copy stream)) with argument pcm_s32le.
Successfully parsed a group of options.
Opening an input file: mic_sv.
[alsa @ 0x223a640] All info found
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, alsa, from 'mic_sv':
  Duration: N/A, start: 1487297838.288129, bitrate: 3072 kb/s
    Stream #0:0, 1, 1/1000000: Audio: pcm_s32le, 48000 Hz, stereo, s32, 3072 kb/s
Successfully opened the file.
Parsing a group of options: output url -.
Applying option f (force format) with argument null.
Successfully parsed a group of options.
Opening an output file: -.
Successfully opened the file.
detected 1 logical cores
[graph_0_in_0_0 @ 0x2249b50] Setting 'time_base' to value '1/48000'
[graph_0_in_0_0 @ 0x2249b50] Setting 'sample_rate' to value '48000'
[graph_0_in_0_0 @ 0x2249b50] Setting 'sample_fmt' to value 's32'
[graph_0_in_0_0 @ 0x2249b50] Setting 'channel_layout' to value '0x3'
[graph_0_in_0_0 @ 0x2249b50] tb:1/48000 samplefmt:s32 samplerate:48000 chlayout:0x3
[format_out_0_0 @ 0x224a460] Setting 'sample_fmts' to value 's16'
[format_out_0_0 @ 0x224a460] auto-inserting filter 'auto_resampler_0' between the filter 'Parsed_anull_0' and the filter 'format_out_0_0'
[AVFilterGraph @ 0x224a180] query_formats: 4 queried, 6 merged, 3 already done, 0 delayed
[auto_resampler_0 @ 0x224b730] [SWR @ 0x224dcc0] Using fltp internally between filters
[auto_resampler_0 @ 0x224b730] ch:2 chl:stereo fmt:s32 r:48000Hz -> ch:2 chl:stereo fmt:s16 r:48000Hz
Output #0, null, to 'pipe:':
  Metadata:
    encoder         : Lavf57.66.101
    Stream #0:0, 0, 1/48000: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
    Metadata:
      encoder         : Lavc57.75.100 pcm_s16le
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_s32le (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
size=N/A time=00:00:00.56 bitrate=N/A speed=1.12x
size=N/A time=00:00:01.06 bitrate=N/A speed=1.06x
size=N/A time=00:00:01.56 bitrate=N/A speed=1.04x
size=N/A time=00:00:02.06 bitrate=N/A speed=1.03x
size=N/A time=00:00:02.57 bitrate=N/A speed=1.02x
size=N/A time=00:00:03.07 bitrate=N/A speed=1.02x
size=N/A time=00:00:03.57 bitrate=N/A speed=1.02x
size=N/A time=00:00:04.07 bitrate=N/A speed=1.02x
size=N/A time=00:00:04.57 bitrate=N/A speed=1.01x
size=N/A time=00:00:05.07 bitrate=N/A speed=1.01x
size=N/A time=00:00:05.57 bitrate=N/A speed=1.01x
size=N/A time=00:00:05.90 bitrate=N/A speed=1.01x
video:0kB audio:1108kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Input file #0 (mic_sv):
  Input stream #0:0 (audio): 554 packets read (2269184 bytes); 554 frames decoded (283648 samples);
  Total: 554 packets (2269184 bytes) demuxed
Output file #0 (pipe:):
  Output stream #0:0 (audio): 554 frames encoded (283648 samples); 554 packets muxed (1134592 bytes);
  Total: 554 packets (1134592 bytes) muxed
554 frames successfully decoded, 0 decoding errors
Exiting normally, received signal 2.