I am using the ffmpeg-lambda-layer in the AWS Serverless Application Repository published by Gojko Adzic:
https://serverlessrepo.aws.amazon.com/applications/arn:aws:serverlessrepo:us -east-1:145266761615:applications~ffmpeg-lambda-layer I want to concatenate multiple MP3 files together into a single audio file. I have what I think is the correct command, but I am not sure how to represent it in code so that it is formatted correctly for the lambda layer. Here is the code sample. Any assistance is greatly appreciated: const childProcess = require('child_process'); childProcess.spawnSync( '/opt/bin/ffmpeg', [ '-i', `"concat:/tmp/a.mp3|/tmp/b.mp3|/tmp/c.mp3|/tmp/d.mp3"`, '-acodec', 'copy', '/tmp/out.mp3' ], { stdio: "inherit" } ); ffmpeg docs: https://trac.ffmpeg.org/wiki/Concatenate#protocol This is one Lambda function of multiple that makes up a Step Function state machine. The Lambda is throwing an exception: "ENOENT: no such file or directory, open '/tmp/out.mp3'" The output in CloudWatch is: ffmpeg version 4.1.3-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2019 the FFmpeg developers built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516 configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzvbi --enable-libzimg libavutil 56. 22.100 / 56. 22.100 libavcodec 58. 35.100 / 58. 35.100 libavformat 58. 20.100 / 58. 20.100 libavdevice 58. 5.100 / 58. 5.100 libavfilter 7. 40.101 / 7. 40.101 libswscale 5. 3.100 / 5. 3.100 libswresample 3. 3.100 / 3. 3.100 libpostproc 55. 3.100 / 55. 3.100 "concat:/tmp/a.mp3|/tmp/b.mp3|/tmp/c.mp3|/tmp/d.mp3": No such file or directory What is the correct way to pass this command to ffmpeg? Thanks, Mark _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
