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• FFMPEG failing in AWS Lambda

  18 février 2019, par Zaid Amir

  I am trying to create a transcoding function for short videos. The function is hosted on AWS Lambda. The problem is that AWS lambda seems to be missing something that FFMPEG requires, at least according to Amazon.

  I contacted Amazon earlier and this is their response to the issue :

  We found that the FFMPEG operations require at least libx264 and an
  acc library, both of which will have dependencies of their own. To
  troubleshoot the issue it will involve diving deeper into the full
  dependency chain. We can see that it works in the Amazon Linux
  environment however, the environment is similar but not identical to
  the lambda environment. There can be some dependencies that exist in
  Amazon Linux but not in lambda environment as Lambda runs on the
  container. Here, as FFmpeg is a third party software, diving deeper
  into the dependency chain and verifying the version compatibilities is
  very hard to do. Unfortunately going further, this is bound to go into
  architecture and code support which is out of AWS Support scope 1. I
  hope you understand our limitations. However should FFmpeg support
  have any questions specific to the Lambda platform, please do let us
  know and we will be happy to assist. We will be in better position to
  investigate further once you receive an update from the FFmpeg support
  suggesting an issue from Lambda end.

  Upon AWS suggestion, I contacted FFMPEG on the developers mailing list, my message was rejected with the reason being that its more suited to ffmpeg users mailing list than developers. I sent an email to ’ffmpeg-user@ffmpeg.org’ a week ago and did not get any response yet.

  I then went and built a dynamically linked ffmpeg version making sure to package all libraries, checked ddl on each one, then made a small lambda function that looped over all binaries and ddled each one of them, compared that to the output I got from Amazon Linux and the same dependencies/versions exists on both lambda and the AWS Linux instance yet ffmpeg still fails on lambda.

  You can find a detailed log file here : https://www.datafilehost.com/d/6e5e21bb

  And this is a sample of the errors I’m getting, repeated across the entire log file :

  2018-08-14T12:27:10.874Z [h264 @ 0x65c2fc0] concealing 2628 DC, 2628
  AC, 2628 MV errors in P frame

  2018-08-14T12:27:10.874Z [aac @ 0x65d2f00] channel element 2.11 is not
  allocated

  2018-08-14T12:27:10.874Z Error while decoding stream #0:1 : Invalid
  data found when processing input

  2018-08-14T12:27:10.874Z [h264 @ 0x67e86c0] Invalid NAL unit size
  (108085662 > 1649).

  2018-08-14T12:27:10.874Z [h264 @ 0x67e86c0] Error splitting the input
  into NAL units.

  2018-08-14T12:27:10.874Z [aac @ 0x65d2f00] channel element 2.0 is not
  allocated

  2018-08-14T12:27:10.874Z Error while decoding stream #0:1 : Invalid
  data found when processing input

  2018-08-14T12:27:10.874Z [h264 @ 0x68189c0] Invalid NAL unit size
  (71106974 > 1085).

  2018-08-14T12:27:10.874Z [h264 @ 0x68189c0] Error splitting the input
  into NAL units.

  2018-08-14T12:27:10.874Z [aac @ 0x65d2f00] Pulse tool not allowed in
  eight short sequence.

  This log is generated when trying to perform an HLS transcoding on this file : https://www.datafilehost.com/d/999a4492

  Note that the issue is not related to that file alone nor is it related to HLS, its general and happen on all videos and any ffmpeg command that tries to seek the stream, even tried extracting a single frame from a video using the simplest form possible for example : ffmpeg -ss 00:00:02 -I file.mp4 -vframes 1 -y output.jpg also fails with the same errors in the log file.

  Not sure how to debug this further. Tried enabling debug logs with ‘-loglevel debug’ but did not give me any extra info. Any help or suggestions

• Installation Error when installing MLT [on hold]

  3 décembre 2013, par user3060419

  my PC configuration is
  Gnome version 3.4.2
  memory 1.7Gib
  Processor AMD Athlon(tm) II X2 270 Processor × 2
  Graphics VESA : RS780
  Base system Debian GNU/Linux 7 (wheezy) 64-bit
  Disc 486.3Gib

  I tried to intall MLT(Media Lovin Toolkit). after installing all dependencies when i configure with this command----

  ./configure —prefix=/usr —enable-gpl —qimage-libdir=/usr/lib/ —qimage-includedir=/usr/include/qt4

  Then the output shows as----

  Configuring modules/linsys :

  Configuring modules/lumas :

  Configuring modules/motion_est :

  Configuring modules/normalize :

  Configuring modules/oldfilm :

  Configuring modules/opengl :

  Configuring modules/plus :

  Configuring modules/qimage :

  • Qt not found : disabling

  Configuring modules/resample :

  Configuring modules/rotoscoping :

  Configuring modules/rtaudio :

  Configuring modules/sdl :

  Configuring modules/sox :

  Configuring modules/swfdec :

  Configuring modules/videostab :

  Configuring modules/vmfx :

  Configuring modules/vorbis :

  Configuring modules/xine :

  Configuring modules/xml :

  Configuring mlt++ :

  Configuring swig :

  GPLv2 license used ; GPLv3 components disabled

  and when i try to make by make command, then the output is---->

  list='src/framework src/mlt++ src/melt src/modules src/swig profiles' ; \
  for subdir in $list ; do \
  make -s -C $subdir depend || exit 1 ; \
  make -C $subdir all || exit 1 ; \
  done
  make[1] : Entering directory `/root/mlt/src/framework'

  make[1] : Nothing to be done for `all'.

  make[1] : Leaving directory `/root/mlt/src/framework'

  make[1] : Entering directory `/root/mlt/src/mlt++'

  make[1] : Nothing to be done for `all'.

  make[1] : Leaving directory `/root/mlt/src/mlt++'

  make[1] : Entering directory `/root/mlt/src/melt'

  make[1] : Nothing to be done for `all'.

  make[1] : Leaving directory `/root/mlt/src/melt'

  make[1] : Entering directory `/root/mlt/src/modules'

  list='xml kino rotoscoping motion_est avformat effectv vmfx gtk2 opengl videostab rtaudio
  jackrack resample oldfilm decklink sox vorbis dv core linsys feeds kdenlive frei0r qimage
  swfdec plus xine lumas avsync normalize dgraft sdl' ; \
  for subdir in $list ; do

      if [ -f $subdir/Makefile -a ! -f disable-$subdir ] ; \
  
  
  
      then make -C $subdir all || exit 1; \
  
  
  
      fi \
  
  
  
  done

  make[2] : Entering directory `/root/mlt/src/modules/xml'

  make[2] : Nothing to be done for `all'.

  make[2] : Leaving directory `/root/mlt/src/modules/xml'

  make[2] : Entering directory `/root/mlt/src/modules/kino'

  g++ -I../../ -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread pkg-config --cflags libquicktime pkg-config --cflags libdv
  -Wno-deprecated pkg-config --cflags libquicktime -c -o kino_wrapper.o kino_wrapper.cc

  g++ -I../../ -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
  -ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
  -fPIC -pthread pkg-config --cflags libquicktime pkg-config --cflags libdv

  -Wno-deprecated pkg-config --cflags libquicktime -c -o avi.o avi.cc

  g++ -I../../ -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread pkg-config --cflags libquicktime pkg-config --cflags libdv
   Wno-deprecated pkg-config --cflags libquicktime -c -o filehandler.o filehandler.cc

  g++ -I../../ -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread pkg-config --cflags libquicktime pkg-config --cflags libdv
   Wno-deprecated pkg-config --cflags libquicktime -c -o riff.o riff.cc

  g++ -shared -o ../libmltkino.so factory.o producer_kino.o kino_wrapper.o avi.o error.o

  filehandler.o riff.o -L../../framework -lmlt -lpthread -Wl,—no-undefined -Wl,—as-needed
   lstdc++ pkg-config --libs libquicktime pkg-config --libs libdv

  make[2] : Leaving directory `/root/mlt/src/modules/kino'

  make[2] : Entering directory `/root/mlt/src/modules/rotoscoping'

  make[2] : Nothing to be done for `all'.

  make[2] : Leaving directory `/root/mlt/src/modules/rotoscoping'

  make[2] : Entering directory `/root/mlt/src/modules/motion_est'

  make[2] : Nothing to be done for `all'.

  make[2] : Leaving directory `/root/mlt/src/modules/motion_est'

  make[2] : Entering directory `/root/mlt/src/modules/avformat'

  cc -shared -o ../libmltavformat.so factory.o filter_avcolour_space.o filter_avresample.o
  filter_avdeinterlace.o filter_swscale.o producer_avformat.o consumer_avformat.o -L../..
  /framework -lmlt -lpthread -Wl,—no-undefined -Wl,—as-needed -lavformat -lavcodec
   lavutil -lswscale -lavdevice

  make[2] : Leaving directory `/root/mlt/src/modules/avformat'

  make[2] : Entering directory `/root/mlt/src/modules/effectv'

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
  -ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
  -fPIC -pthread -c -o factory.o factory.c

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread -c -o filter_burn.o filter_burn.c

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre

  -ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE

  -fPIC -pthread -c -o image.o image.c

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread -c -o utils.o utils.c

  cc -shared -o ../libmlteffectv.so factory.o filter_burn.o image.o utils.o -L../../framework
  -lmlt -lm -Wl,—no-undefined -Wl,—as-needed

  make[2] : Leaving directory `/root/mlt/src/modules/effectv'

  make[2] : Entering directory `/root/mlt/src/modules/vmfx'

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread -c -o factory.o factory.c

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread -c -o filter_chroma.o filter_chroma.c

  filter_chroma.c : In function ‘filter_get_image’ :

  filter_chroma.c:52:10 : warning : variable ‘y’ set but not used [-Wunused-but-set-variable]

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread -c -o filter_chroma_hold.o filter_chroma_hold.c

  filter_chroma_hold.c : In function ‘filter_get_image’ :

  filter_chroma_hold.c:52:10 : warning : variable ‘y’ set but not used [-Wunused-but-set-
  variable]

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread -c -o filter_mono.o filter_mono.c

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread -c -o filter_shape.o filter_shape.c

  filter_shape.c : In function ‘filter_process’ :

  filter_shape.c:137:9 : warning : variable ‘extension’ set but not used [-Wunused-but-set-
  variable]
  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread -c -o producer_pgm.o producer_pgm.c

  cc -shared -o ../libmltvmfx.so factory.o filter_chroma.o filter_chroma_hold.o filter_mono.o
  filter_shape.o producer_pgm.o -L../../framework -lmlt -Wl,—no-undefined -Wl,—as-needed

  make[2] : Leaving directory `/root/mlt/src/modules/vmfx'

  make[2] : Entering directory `/root/mlt/src/modules/gtk2'

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre -ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fPIC -pthread pkg-config  --cflags gtk+-2.0 pkg-config  --cflags gdk-pixbuf-2.0 pkg-config  --cflags pangoft2 -c -o factory.o factory.c
  factory.c : In function ‘initialise’ :
  factory.c:47:3 : warning : ‘g_type_init’ is deprecated (declared at /usr/include/glib-2.0/gobject/gtype.h:669) [-Wdeprecated-declarations]

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread pkg-config  --cflags gtk+-2.0 pkg-config  --cflags gdk-pixbuf-2.0
pkg-config  --cflags pangoft2 -c -o consumer_gtk2.o consumer_gtk2.c

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread pkg-config  --cflags gtk+-2.0 pkg-config  --cflags gdk-pixbuf-2.0 pkg-config  --cflags pangoft2 -c -o producer_pixbuf.o producer_pixbuf.c
  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre -ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fPIC -pthread pkg-config  --cflags gtk+-2.0 pkg-config  --cflags gdk-pixbuf-2.0 pkg-config  --cflags pangoft2 -c -o pixops.o pixops.c
  pixops.c : In function ‘pixops_process’ :
  pixops.c:410:20 : warning : variable ‘tcolor2’ set but not used [-Wunused-but-set-variable]

  pixops.c:410:11 : warning : variable ‘tcolor1’ set but not used [-Wunused-but-set-variable]

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE

  -fPIC -pthread pkg-config  --cflags gtk+-2.0 pkg-config  --cflags gdk-pixbuf-2.0

  pkg-config  --cflags pangoft2 -c -o filter_rescale.o filter_rescale.c

  cc -I../.. -DARCH_X86_64 -Wall -DPIC -O2 -pipe -fno-tree-dominator-opts -fno-tree-pre
   ffast-math -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -g -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
   fPIC -pthread pkg-config  --cflags gtk+-2.0 pkg-config  --cflags gdk-pixbuf-2.0
pkg-config  --cflags pangoft2 -c -o producer_pango.o producer_pango.c

  producer_pango.c:28:31 : fatal error : freetype/freetype.h : No such file or directory
  compilation terminated.

  make[2] : * [producer_pango.o] Error 1

  make[2] : Leaving directory `/root/mlt/src/modules/gtk2'

  make[1] : * [all] Error 1

  make[1] : Leaving directory `/root/mlt/src/modules'

  make : * [all] Error 1

  Anyone please help me to install MLT, I really need help seriously.

• How to implement live video streaming with ffmpeg without using WebRTC ?

  8 août 2024, par Artem

  Following up on my previous question, I'd like to inquire about alternative methods for live video streaming using ffmpeg (WebRTC is not an option due to certain constraints I prefer not to discuss here).

  


  Context :

  


  I have a Go application where a goroutine launches ffmpeg to process a video stream, which is then delivered to the main goroutine via a chan []byte. I tried using WebSocket, but encountered issues as described in the previous question. HLS also didn't work well due to significant latency and artifacts like green squares on the video.

  


  Based on a comment in the previous question, I attempted to stream the video via a simple GET request. Here's the Go handler I implemented :

  


  func stream(helperApp agent.Helper) func(rw http.ResponseWriter, rr *http.Request) {
   a := atomic.Bool{}
   return func(rw http.ResponseWriter, rr *http.Request) {
      if !a.CAS(false, true) {
         http.Error(rw, "already running", http.StatusInternalServerError)
         return
      }

      rw.Header().Set("Access-Control-Allow-Origin", "*")
      rw.Header().Set("Content-Type", "video/mp2t")

      out := make(chan []byte)

      // create StreamParam
      go ScreenCaptureForLiveStream(StreamParam, out) // ffmpeg process starts inside

      r, w := io.Pipe()
      go func() {
         for data := range out {
            w.Write(data)
            fmt.Println(len(data))
         }
      }()
      io.Copy(rw, r)
   }
}



  


  On the client side (HTML) :

  


  <video muted="muted" src="http://localhost:8080/stream" controls="controls"></video>&#xA;

  


  In the browser console, I can see data being received, but the video doesn't play.

  


  FFmpeg is executed with these parameters :

  


  -loglevel error -f avfoundation -framerate 5 -capture_cursor 1 -capture_mouse_clicks 1 -i 1 -c:v libx264 -pix_fmt yuv420p -vf pad='ceil(iw/2)*2:ceil(ih/2)*2' -threads 0 -preset veryfast -bf 2 -f mpegts pipe:1



  


  For validation, I ran :

  


  ffmpeg -i http://localhost:8080/stream -c copy out.mp4



  


  The video was successfully saved and plays.

  


  Question :
What alternative methods exist to implement live video streaming with ffmpeg, aside from WebRTC ? Why does the current approach of streaming video via HTTP GET request not function correctly in the browser, and how can this be resolved ?