Several beginner q's about Sox encoding (mp3/aac)?
christina zou <[email protected]>
| Newsgroups | gmane.comp.audio.sox |
|---|---|
| Message-ID | <CAMmPYJ3Z8Tg3rTS3M-bUyey2cpGMkis4R=cpmvzP_v9NFc-Mrg@mail.gmail.com> |
Hi, I have a Raspberry Pi running Debian Jessie, as well as a MEMS I2S mic and a Pi Camera. My mic records 32bit raw PCM audio. I am trying to stream video and audio to Youtube Live. I am using Sox for audio recording and encoding. YouTube Live only accepts mp3 or aac encoded audio. I have installed sudo apt-get install libsox-fmt-mp3, so my Sox is able to encode mp3. I am using this command to record and encode audio: rec --buffer 2000000 -c 1 -r 44100 -b 32 test.mp3 /usr/bin/rec WARN formats: mp3 can't encode to 32-bit Input File : 'mic_mono' (alsa) Channels : 1 Sample Rate : 44100 Precision : 32-bit Sample Encoding: 32-bit Signed Integer PCM ------- 1. I get the warning: " mp3 can't encode to 32-bit" - what should I do about this? 2. My resultant MP3 file has small clicks and popping noises throughout. I know this is not a problem with my mic, as I've produced AAC encoded audio with FFMPEG that was perfectly clean. Any idea why this is happening? 3. Is it possible to compile SOX with AAC encoding support? I want to try AAC encoding to see if that eliminates the clicks and pops. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Sox-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sox-users