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  • FFMPEG fails with seeking params before input on AWS Lambda

    18 janvier 2023, par Rashid Goshtasbi

    I am trying to run the following command on AWS Lambda that has FFMPEG layer but it fails with a SIGSEGV. The FFMPEG process starts working fine until it reaches the segment's it wants to get.

    


    /opt/ffmpeglib/ffmpeg -ss 00:02:00 -t 30 -i https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/m3u8s/f08e80da-bf1d-4e3d-8899-f0f6155f6efa-audio-only.m3u8 /tmp/out.aac -y


    


    Note : The url is a sample url for this sharing

    


    What this is doing : It will seek 2 minutes into the stream url, then capture the next 30 seconds into an out.aac file. When I run this locally, it works fine. When I run this on Lambda, it ends abruptly when reading the segments that are in the time frame I want (from 2:00min to 2:30 min).

    


    FFMPEG will skip the frames if I put the -ss 00:02:00 -t 30 before the -i which they state is faster. If i put it after the -i, it works, but of course, it's a bit slower.

    


    Example working command :

    


    /opt/ffmpeglib/ffmpeg -i https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/m3u8s/f08e80da-bf1d-4e3d-8899-f0f6155f6efa-audio-only.m3u8 -ss 00:02:00 -t 30 /tmp/out.aac -y


    


    Wondering if anyone knows a way to run this on Lambda. Thank you.

    


    Note : I have tried this on Python and Javascript. Tried also making child processes with Javascript and no luck. I also added -nostdin and piped stdin/out to dev null but nothing.

    


    Thanks.

    


    Example of me running locally :

    


    ~/D/build [1]$ ffmpeg -ss 00:02:00 -t 30 -i https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/m3u8s/f08e80da-bf1d-4e3d-8899-f0f6155f6efa-audio-only.m3u8 /tmp/out.aac -y                                                                      14:56:13
ffmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg developers
  built with Apple clang version 14.0.0 (clang-1400.0.29.102)
  configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/5.1.2 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-neon
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
[hls @ 0x122f05250] Opening 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/m3u8s/f08e80da-bf1d-4e3d-8899-f0f6155f6efa_audio_1_stereo_128000.m3u8' for reading
[hls @ 0x122f05250] Skip ('#EXT-X-VERSION:3')
[hls @ 0x122f05250] Opening 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/audio/1_stereo_128000/hls/segment_0.ts' for reading
[hls @ 0x122f05250] Opening 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/audio/1_stereo_128000/hls/segment_1.ts' for reading
Input #0, hls, from 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/m3u8s/f08e80da-bf1d-4e3d-8899-f0f6155f6efa-audio-only.m3u8':
  Duration: 00:03:31.43, start: 0.000000, bitrate: 0 kb/s
  Program 0 
    Metadata:
      variant_bitrate : 128000
  Stream #0:0: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 128000
Stream mapping:
  Stream #0:0 -> #0:0 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[hls @ 0x122f05250] Opening 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/audio/1_stereo_128000/hls/segment_30.ts' for reading
[hls @ 0x122f05250] Opening 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/audio/1_stereo_128000/hls/segment_31.ts' for reading
Output #0, adts, to '/tmp/out.aac':
  Metadata:
    encoder         : Lavf59.27.100
  Stream #0:0: Audio: aac (LC), 48000 Hz, stereo, fltp, 128 kb/s
    Metadata:
      variant_bitrate : 128000
      encoder         : Lavc59.37.100 aac
[https @ 0x12001c600] Opening 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/audio/1_stereo_128000/hls/segment_32.ts' for reading
[https @ 0x124038800] Opening 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/audio/1_stereo_128000/hls/segment_33.ts' for reading
[https @ 0x12001c600] Opening 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/audio/1_stereo_128000/hls/segment_34.ts' for reading
[https @ 0x124038800] Opening 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/audio/1_stereo_128000/hls/segment_35.ts' for reading
[https @ 0x12001c600] Opening 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/audio/1_stereo_128000/hls/segment_36.ts' for reading
[https @ 0x124038800] Opening 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/audio/1_stereo_128000/hls/segment_37.ts' for reading
[https @ 0x12001c600] Opening 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/audio/1_stereo_128000/hls/segment_38.ts' for reading
size=     486kB time=00:00:30.01 bitrate= 132.8kbits/s speed=10.7x    
video:0kB audio:477kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.018663%


    


    It doesn't do anything after this line via the lambda console logs :

    


    [hls @ 0x72faa80] Opening 'https://cdn.bitmovin.com/content/assets/art-of-motion-dash-hls-progressive/audio/1_stereo_128000/hls/segment_0.ts' for reading


    


  • batch scripting help passing arguments to ffmpeg

    20 octobre 2022, par notsolowki

    I need to join some videos parts together into 1 part. Im working from a folder called series. series contains multiple subfolder 1,2,3,4 etc that represent video number. each sub folder contains the parts to be joined together.

    


    I made a batch script that seems to be able to make a list of sub directories and make a list of sub directory contents,

    


    however run i run the script and try to pass the information from "mylist" line by line to ffmpeg it dont seem to work it complains invalid input information detected.

    


    I intended for the batch script to start at folder 1 and pass the file names from "mylist.txt" to ffmpeg input 1 by one untill the last folder in folderlist.txt is processed.

    


    What am i doing wrong. how can i make this script work ?

    


        :: Create File List
for /D %%G in ("%cd%\*")DO ( 

for %%i in ("%%~nxG"\*.mp4) do echo file '%%i'>> mylist.txt
echo %%~nxG >> folderlist.txt

)

:: Concatenate Files
::for /F "delims=" %%a in (mylist.txt) do (
ffmpeg -f concat -safe 0 -i %%a -c copy %%a.mp4
::)
pause
@echo off


pause


    


    the error i get when i run it from ffmpeg after running the batch is,

    


    C:\Users\Laptop\Desktop\t10>(ffmpeg -f concat -safe 0 -i "file '4\Tosh.0 April 17  2018 10 1004 April 17  2018 - Ticket Girl Act 1.mp4'" -c copy file '4\Tosh.0 April 17  2018 10 1004 April 17  2018 - Ticket Girl Act 1.mp4'.mp4 )
ffmpeg version 2022-10-06-git-2c2aaa5bd0-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 12.1.0 (Rev2, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      57. 39.100 / 57. 39.100
  libavcodec     59. 50.100 / 59. 50.100
  libavformat    59. 34.100 / 59. 34.100
  libavdevice    59.  8.101 / 59.  8.101
  libavfilter     8. 49.101 /  8. 49.101
  libswscale      6.  8.112 /  6.  8.112
  libswresample   4.  9.100 /  4.  9.100
  libpostproc    56.  7.100 / 56.  7.100
file '4\Tosh.0 April 17  2018 10 1004 April 17  2018 - Ticket Girl Act 1.mp4': No such file or directory


    


  • How do I make FFMPEG use localized strftime with drawtext ?

    3 décembre 2022, par Randy Michnovicz

    I'm trying to write a script to use FFMPEG to draw localized timestamps on a video, but I'm not having much luck.

    


    I can confirm I have the locale fr_FR.UTF-8 installed on my system by running the following command : LC_ALL=fr_FR.UTF-8 date

    


    However, the following command produces a 4 second video beginning with the string "Monday 28 November 2022 19:00:47 PST" on both my Mac and an Alpine Linux docker container :

    


    LC_ALL=fr_FR.UTF-8 ffmpeg -hide_banner -f lavfi -i color=size=1024x768:rate=25:color=black -c:v libx264 -c:a aac -filter_complex drawtext=expansion=normal:fontsize=18:fontcolor=white:box=1:boxcolor=black@0.5:text='%{pts\\:localtime\\:1669690847\\:%A %-d %B %Y %X %Z}' -t 4 -y out.mp4

    


    Does anyone know how to make it create strings with non-English text ?

    


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