Provide input on current settings of the o94 FFMPEG recorder

Provide details on:

• FFMPEG flags
• asound.rc, ALSA and device settings
• Audio Interface

changed milestone to %1.0-alpha2 — Precise Pheasant

added 1 deleted label

assigned to @david

added Doing label

Main settings:

recorder="/usr/bin/ffmpeg"
soundcard="plughw:1"
bitrate="96k"
format_in="alsa"
format_out="mp3"

pidno=$(pidof $recorder)

filename="$(date +%Y-%m-%d_%H-%M-%S).mp3"
dirname="$(date +%Y-%m-%d)/"

id_tag_title="ORANGE 94.0 UKW Logging $(date +%Y-%m-%d) $(date +%H:%M)"

Recording processes are priorised using nice (process priority) and ionice (I/O priority):

###### folgenden codeblock statt der letzten zeile verwenden um auch ffmpeg logging zu aktivieren ()
    ### pining auf cpu core 2 (peter)
    echo "+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++" >> $logfileffmpeg
    date >> $logfileffmpeg
    taskset 2 nice -n -20 ionice -c 1 -n 0 $recorder -loglevel fatal -ac 2 -f $format_in -i $soundcard -codec:a libmp3lame -ab $bitrate -f $format_out -t $rectime -metadata title="$id_tag_title" $repository$dirname$filename 2>> $logfileffmpeg
    echo "=========================================================================" >> $logfileffmpeg
    echo "" >> $logfileffmpeg
    echo "$(date) - stopped recording $repository$dirname$filename" >> $logfile
    echo "=========================================================================" >> $logfile
    echo "" >> $logfile

Audio Interfaces used with the recorder:

• Focusrite 2i2 (current)
• Alesis io2

Hardware parameters of the 2i2 using arecord --dump-hw-params -D hw:1:

Recording WAVE 'stdin' : Unsigned 8 bit, Rate 8000 Hz, Mono

HW Params of device "hw:1":
ACCESS:  MMAP_INTERLEAVED RW_INTERLEAVED
FORMAT:  S32_LE
SUBFORMAT:  STD
SAMPLE_BITS: 32
FRAME_BITS: 64
CHANNELS: 2
RATE: [44100 192000]
PERIOD_TIME: [125 1486078)
PERIOD_SIZE: [8 65536]
PERIOD_BYTES: [64 524288]
PERIODS: [2 1024]
BUFFER_TIME: (83 2972155)
BUFFER_SIZE: [16 131072]
BUFFER_BYTES: [128 1048576]

TICK_TIME: ALL
arecord: set_params:1343: Sample format non available
Available formats:

S32_LE

Contents of asound.rc or /etc/asound.conf: No settings, using default USB device settings

added P2 label

closed

marked this issue as related to engine-core#34 (closed)

removed Doing label