So I am using a raspberry pi to encode audio from USB sound card's Line In and broadcasting to a multicast address as an MP3. I ran tests on a laptop before I migrated it to a pi, and it seemed to run without issue. Now when I run it on the pi, it will run for about 4 or 5 hours, then the ffmpeg encoder(I think) will stop. When I check on the program after a few hours, I find that sox is still recording, but ffmpeg has stopped encoding. I have tried this with both arecord and sox, and with both the raspbian repo avconv and the real ffmpeg compiled from source. I am figuring that it has something to do with the limited resources on the pi, but I'm not sure. Any thoughts would be appreciated. Thanks in advance.
The command I am running is as follows: *rec -b 16 -r 48000 -c 2 -t wav - | FFREPORT=file=ffreport.log:level=48 ffmpeg -i - -acodec libmp3lame -ab 320k -ac 1 -f rtp rtp://234.5.5.6:1234 <http://234.5.5.6:1234>* The report log is below: ffmpeg started on 2015-02-24 at 03:27:09 Report written to "ffreport.log" Command line: ffmpeg -i - -acodec libmp3lame -ab 320k -ac 1 -f rtp rtp://234.5.5.6:1234 ffmpeg version N-70050-g03f39fb Copyright (c) 2000-2015 the FFmpeg developers built with gcc 4.6 (Debian 4.6.3-14+rpi1) configuration: --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree --enable-libmp3lame libavutil 54. 19.100 / 54. 19.100 libavcodec 56. 25.100 / 56. 25.100 libavformat 56. 23.100 / 56. 23.100 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 11.100 / 5. 11.100 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 3.100 / 53. 3.100 Splitting the commandline. Reading option '-i' ... matched as input file with argument '-'. Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'libmp3lame'. Reading option '-ab' ... matched as option 'ab' (audio bitrate (please use -b:a)) with argument '320k'. Reading option '-ac' ... matched as option 'ac' (set number of audio channels) with argument '1'. Reading option '-f' ... matched as option 'f' (force format) with argument 'rtp'. Reading option 'rtp://234.5.5.6:1234' ... matched as output file. Finished splitting the commandline. Parsing a group of options: global . Successfully parsed a group of options. Parsing a group of options: input file -. Successfully parsed a group of options. Opening an input file: -. [wav @ 0x2077600] Format wav probed with size=2048 and score=99 [wav @ 0x2077600] Before avformat_find_stream_info() pos: 44 bytes read:4096 seeks:0 [wav @ 0x2077600] parser not found for codec pcm_s16le, packets or times may be invalid. [wav @ 0x2077600] probing stream 0 pp:14 [wav @ 0x2077600] probing stream 0 pp:13 [wav @ 0x2077600] probing stream 0 pp:12 [wav @ 0x2077600] probing stream 0 pp:11 [wav @ 0x2077600] probing stream 0 pp:10 [wav @ 0x2077600] probing stream 0 pp:9 [wav @ 0x2077600] probing stream 0 pp:8 [wav @ 0x2077600] probing stream 0 pp:7 [wav @ 0x2077600] probing stream 0 pp:6 [wav @ 0x2077600] probing stream 0 pp:5 [wav @ 0x2077600] probing stream 0 pp:4 [wav @ 0x2077600] probing stream 0 pp:3 [wav @ 0x2077600] probing stream 0 pp:2 [wav @ 0x2077600] probing stream 0 pp:1 [wav @ 0x2077600] probed stream 0 [wav @ 0x2077600] parser not found for codec pcm_s16le, packets or times may be invalid. [wav @ 0x2077600] All info found [wav @ 0x2077600] After avformat_find_stream_info() pos: 204844 bytes read:212992 seeks:0 frames:50 Guessed Channel Layout for Input Stream #0.0 : stereo Input #0, wav, from 'pipe:': Duration: N/A, bitrate: 1536 kb/s Stream #0:0, 50, 1/48000: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2 channels, s16, 1536 kb/s Successfully opened the file. Parsing a group of options: output file rtp://234.5.5.6:1234. Applying option acodec (force audio codec ('copy' to copy stream)) with argument libmp3lame. Applying option ab (audio bitrate (please use -b:a)) with argument 320k. Applying option ac (set number of audio channels) with argument 1. Applying option f (force format) with argument rtp. Successfully parsed a group of options. Opening an output file: rtp://234.5.5.6:1234. Successfully opened the file. detected 1 logical cores [graph 0 input from stream 0:0 @ 0x2076ee0] Setting 'time_base' to value '1/48000' [graph 0 input from stream 0:0 @ 0x2076ee0] Setting 'sample_rate' to value '48000' [graph 0 input from stream 0:0 @ 0x2076ee0] Setting 'sample_fmt' to value 's16' [graph 0 input from stream 0:0 @ 0x2076ee0] Setting 'channel_layout' to value '0x3' [graph 0 input from stream 0:0 @ 0x2076ee0] tb:1/48000 samplefmt:s16 samplerate:48000 chlayout:0x3 [audio format for output stream 0:0 @ 0x206fba0] Setting 'sample_fmts' to value 's32p|fltp|s16p' [audio format for output stream 0:0 @ 0x206fba0] Setting 'sample_rates' to value '44100|48000|32000|22050|24000|16000|11025|12000|8000' [audio format for output stream 0:0 @ 0x206fba0] Setting 'channel_layouts' to value '0x4' [audio format for output stream 0:0 @ 0x206fba0] auto-inserting filter 'auto-inserted resampler 0' between the filter 'Parsed_anull_0' and the filter 'audio format for output stream 0:0' [AVFilterGraph @ 0x2077230] query_formats: 4 queried, 6 merged, 3 already done, 0 delayed 0.500000 0.500000 [auto-inserted resampler 0 @ 0x20708a0] ch:2 chl:stereo fmt:s16 r:48000Hz -> ch:1 chl:mono fmt:s16p r:48000Hz Output #0, rtp, to 'rtp://234.5.5.6:1234': Metadata: encoder : Lavf56.23.100 Stream #0:0, 0, 1/90000: Audio: mp3 (libmp3lame), 48000 Hz, mono, s16p, 320 kb/s Metadata: encoder : Lavc56.25.100 libmp3lame Stream mapping: Stream #0:0 -> #0:0 (pcm_s16le (native) -> mp3 (libmp3lame)) size= 56kB time=00:00:01.41 bitrate= 325.3kbits/s size= 83kB time=00:00:02.08 bitrate= 325.3kbits/s size= 103kB time=00:00:02.59 bitrate= 325.3kbits/s size= 123kB time=00:00:03.09 bitrate= 325.3kbits/s size= 143kB time=00:00:03.60 bitrate= 325.3kbits/s . . . size= 443979kB time=03:06:18.00 bitrate= 325.4kbits/s size= 444000kB time=03:06:18.52 bitrate= 325.4kbits/s size= 444020kB time=03:06:19.03 bitrate= 325.4kbits/s size= 444040kB time=03:06:19.53 bitrate= 325.4kbits/s size= 444061kB time=03:06:20.06 bitrate= 325.4kbits/s size= 444081kB time=03:06:20.56 bitrate= 325.4kbits/s size= 444101kB time=03:06:21.07 bitrate= 325.4kbits/s size= 444122kB time=03:06:21.60 bitrate= 325.4kbits/s size= 444142kB time=03:06:22.10 bitrate= 325.4kbits/s size= 444162kB time=03:06:22.60 bitrate= 325.4kbits/s size= 444183kB time=03:06:23.13 bitrate= 325.4kbits/s size= 444203kB time=03:06:23.64 bitrate= 325.4kbits/s size= 444223kB time=03:06:24.14 bitrate= 325.4kbits/s size= 444244kB time=03:06:24.67 bitrate= 325.4kbits/s [libmp3lame @ 0x20b6e30] Trying to remove 47 more samples than there are in the queue size= 444248kB time=03:06:24.76 bitrate= 325.4kbits/s video:0kB audio:436906kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.680361% Input file #0 (pipe:): Input stream #0:0 (audio): 524287 packets read (2147479552 bytes); 524287 frames decoded (536869888 samples); Total: 524287 packets (2147479552 bytes) demuxed Output file #0 (rtp:// 234.5.5.6:1234): Output stream #0:0 (audio): 466032 frames encoded (536868864 samples); 466033 packets muxed (447391680 bytes); Total: 466033 packets (447391680 bytes) muxed 524287 frames successfully decoded, 0 decoding errors [AVIOContext @ 0x20d7f10] Statistics: 0 seeks, 468255 writeouts [AVIOContext @ 0x2077080] Statistics: 8899084332 bytes read, 0 seeks Received signal 2: terminating. _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
