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• av_interleaved_write_frame() : Connection reset by peer mjpeg : What is wrong with mjpeg stream, ffserver and ffplay ?

  31 décembre 2016, par Ilya Yevlampiev

  I’m creating mjpeg stream from image files using ffmpeg and write it to ffserver’s feed :

  sudo ffmpeg -loop 1 -i fon.jpeg -vcodec mjpeg -f mjpeg http://localhost:8090/feed1.ffm
  
  
  
  ffmpeg version 2.0 Copyright (c) 2000-2013 the FFmpeg developers
  
  built on Aug 19 2013 23:10:58 with gcc 4.7 (Debian 4.7.2-5)
  
  configuration: 
  
  libavutil      52. 38.100 / 52. 38.100
  
  libavcodec     55. 18.102 / 55. 18.102
  
  libavformat    55. 12.100 / 55. 12.100
  
  libavdevice    55.  3.100 / 55.  3.100
  
  libavfilter     3. 79.101 /  3. 79.101
  
  libswscale      2.  3.100 /  2.  3.100
  
  libswresample   0. 17.102 /  0. 17.102
  
  Input #0, image2, from 'fon.jpeg':
  
  Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
  
  Stream #0:0: Video: mjpeg, yuvj420p, 1280x720 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  Output #0, mjpeg, to 'http://localhost:8090/feed1.ffm':
  
  Metadata:
  
  encoder         : Lavf55.12.100
  
  Stream #0:0: Video: mjpeg, yuvj420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 25 tbc
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (mjpeg -> mjpeg)
  
  Press [q] to stop, [?] for help

  ffserver is configured as

  Port 8090
  
  RTSPPort 8594
  
  BindAddress 0.0.0.0
  
  MaxClients 100
  
  MaxBandwidth 20000
  
  NoDaemon
  
  <feed>
  
  File /tmp/feed.ffm
  
  FileMaxSize 3M
  
  </feed>
  
  <stream>
  
  Feed feed.ffm
  
  Format rtsp
  
  VideoCodec mjpeg
  
  VideoFrameRate 30
  
  VideoBufferSize 80000
  
  VideoBitRate 200
  
  VideoQMin 1
  
  VideoQMax 5
  
  VideoSize 1280x720
  
  PreRoll 1
  
  Noaudio
  
  </stream>
  
  <stream>
  
  Feed feed.ffm
  
  Format swf
  
  VideoCodec flv
  
  VideoFrameRate 30
  
  VideoBufferSize 50000
  
  VideoBitRate 100
  
  VideoQMin 1
  
  VideoQMax 5
  
  VideoSize 1280x720
  
  PreRoll 0
  
  Noaudio
  
  </stream>

  Then I’m trying to retrieve the rtsp stream from the ffserver :

  ffplay http://localhost:8090/test.rtsp -loglevel debug
  
  avplay version 0.8.5-6:0.8.5-1, Copyright (c) 2003-2012 the Libav developers
  
  built on Jan 13 2013 12:05:48 with gcc 4.7.2
  
  configuration: --arch=amd64 --enable-pthreads --enable-runtime-cpudetect --extra-         version='6:0.8.5-1' --libdir=/usr/lib/x86_64-linux-gnu --prefix=/usr --enable-bzlib --enable-libdc1394 --enable-libdirac --enable-libfreetype --enable-frei0r --enable-gnutls --enable-libgsm --enable-libmp3lame --enable-librtmp --enable-libopencv --enable-libopenjpeg --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-vaapi --enable-vdpau --enable-libvorbis --enable-libvpx --enable-zlib --enable-gpl --enable-postproc --enable-swscale --enable-libcdio --enable-x11grab --enable-libx264 --enable-libxvid --shlibdir=/usr/lib/x86_64-linux-gnu --enable-shared --disable-static

  avutil configuration : —arch=amd64 —enable-pthreads —enable-runtime-cpudetect —extra-version=’6:0.8.4-1’ —libdir=/usr/lib/x86_64-linux-gnu —prefix=/usr —enable-bzlib —enable-libdc1394 —enable-libdirac —enable-libfreetype —enable-frei0r —enable-gnutls —enable-libgsm —enable-libmp3lame —enable-librtmp —enable-libopencv —enable-libopenjpeg —enable-libpulse —enable-libschroedinger —enable-libspeex —enable-libtheora —enable-vaapi —enable-vdpau —enable-libvorbis —enable-libvpx —enable-zlib —enable-gpl —enable-postproc —enable-swscale —enable-libcdio —enable-x11grab —enable-libx264 —enable-libxvid —shlibdir=/usr/lib/x86_64-linux-gnu —enable-shared —disable-static
  avcodec configuration : —arch=amd64 —enable-pthreads —enable-runtime-cpudetect —extra-version=’6:0.8.4-1’ —libdir=/usr/lib/x86_64-linux-gnu —prefix=/usr —enable-bzlib —enable-libdc1394 —enable-libdirac —enable-libfreetype —enable-frei0r —enable-gnutls —enable-libgsm —enable-libmp3lame —enable-librtmp —enable-libopencv —enable-libopenjpeg —enable-libpulse —enable-libschroedinger —enable-libspeex —enable-libtheora —enable-vaapi —enable-vdpau —enable-libvorbis —enable-libvpx —enable-zlib —enable-gpl —enable-postproc —enable-swscale —enable-libcdio —enable-x11grab —enable-libx264 —enable-libxvid —shlibdir=/usr/lib/x86_64-linux-gnu —enable-shared —disable-static
  avformat configuration : —arch=amd64 —enable-pthreads —enable-runtime-cpudetect —extra-version=’6:0.8.4-1’ —libdir=/usr/lib/x86_64-linux-gnu —prefix=/usr —enable-bzlib —enable-libdc1394 —enable-libdirac —enable-libfreetype —enable-frei0r —enable-gnutls —enable-libgsm —enable-libmp3lame —enable-librtmp —enable-libopencv —enable-libopenjpeg —enable-libpulse —enable-libschroedinger —enable-libspeex —enable-libtheora —enable-vaapi —enable-vdpau —enable-libvorbis —enable-libvpx —enable-zlib —enable-gpl —enable-postproc —enable-swscale —enable-libcdio —enable-x11grab —enable-libx264 —enable-libxvid —shlibdir=/usr/lib/x86_64-linux-gnu —enable-shared —disable-static
  swscale configuration : —arch=amd64 —enable-pthreads —enable-runtime-cpudetect —extra-version=’6:0.8.4-1’ —libdir=/usr/lib/x86_64-linux-gnu —prefix=/usr —enable-bzlib —enable-libdc1394 —enable-libdirac —enable-libfreetype —enable-frei0r —enable-gnutls —enable-libgsm —enable-libmp3lame —enable-librtmp —enable-libopencv —enable-libopenjpeg —enable-libpulse —enable-libschroedinger —enable-libspeex —enable-libtheora —enable-vaapi —enable-vdpau —enable-libvorbis —enable-libvpx —enable-zlib —enable-gpl —enable-postproc —enable-swscale —enable-libcdio —enable-x11grab —enable-libx264 —enable-libxvid —shlibdir=/usr/lib/x86_64-linux-gnu —enable-shared —disable-static
  postproc configuration : —arch=amd64 —enable-pthreads —enable-runtime-cpudetect —extra-version=’6:0.8.4-1’ —libdir=/usr/lib/x86_64-linux-gnu —prefix=/usr —enable-bzlib —enable-libdc1394 —enable-libdirac —enable-libfreetype —enable-frei0r —enable-gnutls —enable-libgsm —enable-libmp3lame —enable-librtmp —enable-libopencv —enable-libopenjpeg —enable-libpulse —enable-libschroedinger —enable-libspeex —enable-libtheora —enable-vaapi —enable-vdpau —enable-libvorbis —enable-libvpx —enable-zlib —enable-gpl —enable-postproc —enable-swscale —enable-libcdio —enable-x11grab —enable-libx264 —enable-libxvid —shlibdir=/usr/lib/x86_64-linux-gnu —enable-shared —disable-static

   libavutil    51. 22. 1 / 51. 22. 1
  
   libavcodec   53. 35. 0 / 53. 35. 0
  
   libavformat  53. 21. 1 / 53. 21. 0
  
   libavdevice  53.  2. 0 / 53.  2. 0
  
   libavfilter   2. 15. 0 /  2. 15. 0
  
   libswscale    2.  1. 0 /  2.  1. 0
  
   libpostproc  52.  0. 0 / 52.  0. 0
  
   http://localhost:8090/test.rtsp: Invalid data found when processing input

  So, what is wrong in this streaming example, if I have no problem when I substitute streams to the files ?

  I create a mjpeg file using the same parameters 9i.e. file is an output insteadof stream)

  sudo ffmpeg -loop 1 -i fon.jpeg -vcodec mjpeg -f mjpeg test.mjpg
  
  ffmpeg version 2.0 Copyright (c) 2000-2013 the FFmpeg developers
  
  built on Aug 19 2013 23:10:58 with gcc 4.7 (Debian 4.7.2-5)
  
  configuration: 
  
  libavutil      52. 38.100 / 52. 38.100
  
  libavcodec     55. 18.102 / 55. 18.102
  
  libavformat    55. 12.100 / 55. 12.100
  
  libavdevice    55.  3.100 / 55.  3.100
  
  libavfilter     3. 79.101 /  3. 79.101
  
  libswscale      2.  3.100 /  2.  3.100
  
  libswresample   0. 17.102 /  0. 17.102
  
  Input #0, image2, from 'fon.jpeg':
  
  Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
  
  Stream #0:0: Video: mjpeg, yuvj420p, 1280x720 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  Output #0, mjpeg, to 'test.mjpg':
  
  Metadata:
  
  encoder         : Lavf55.12.100
  
  Stream #0:0: Video: mjpeg, yuvj420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 25 tbc
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (mjpeg -> mjpeg)
  
  Press [q] to stop, [?] for help
  
  frame=   36 fps=0.0 q=0.0 size=     888kB time=00:00:01.36 bitrate=5349.2kbits/sframe=   78 fps= 76 q=0.0 size=    1711kB time=00:00:03.04 bitrate=4609.9kbits/sframe=  120 fps= 78 q=0.0 size=    2533kB time=00:00:04.72 bitrate=4396.9kbits/sframe=  161 fps= 79 q=0.0 size=    3336kB time=00:00:06.36 bitrate=4297.5kbits/sframe=  202 fps= 79 q=0.0 size=    4139kB       
  
  time=00:00:08.00 bitrate=4238.8kbits/sframe=  243 fps= 79 q=0.0 size=    4943kB  
  
  time=00:00:09.64 bitrate=4200.1kbits/sframe=  282 fps= 79 q=0.0 size=    5706kB 
  
  time=00:00:11.20 bitrate=4173.9kbits/sframe=  321 fps= 79 q=0.0 size=    6470kB  
  
  time=00:00:12.76 bitrate=4154.0kbits/sframe=  358 fps= 78 q=0.0 size=    7195kB 
  
  time=00:00:14.24 bitrate=4139.2kbits/sframe=  397 fps= 68 q=0.0 size=    7959kB 
  
  time=00:00:15.80 bitrate=4126.6kbits/s    
  
  [1]+  Stopped sudo ffmpeg -loop 1 -i fon.jpeg -vcodec mjpeg -f mjpeg test.mjpg

  And then I playback this mjpeg file with ffplay. The play back is correct, I see no errors or exceptions.

  ffplay test.mjpg
  
  avplay version 0.8.5-6:0.8.5-1, Copyright (c) 2003-2012 the Libav developers
  
  built on Jan 13 2013 12:05:48 with gcc 4.7.2
  
  [mjpeg @ 0x7fc3680008c0] max_analyze_duration reached
  
  [mjpeg @ 0x7fc3680008c0] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mjpeg, from 'test.mjpg':
  
  Duration: N/A, bitrate: N/A
  
  Stream #0.0: Video: mjpeg, yuvj420p, 1280x720 [PAR 1:1 DAR 16:9], 25 fps, 25 tbr, 1200k tbn, 1200k tbc
  
  [avsink @ 0x7fc360001020] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out'
  
  [scale @ 0x7fc360001700] w:1280 h:720 fmt:yuvj420p -> w:1280 h:720 fmt:yuv420p flags:0x4
  
  27.99 A-V:  0.000 s:0.0 aq=    0KB vq=    0KB sq=    0B f=0/0   0/0

  So, what is the configuration issue for ffserver, or may be it is a bug of the ffserver ?

  UPD. I have realized, that i fed file1.ffm instead of file.ffm ; that caused some ffserver problem :

   Mon Sep  9 11:43:20 2013 [ffm @ 0x2110000]Format ffm probed with size=2048 and score=101
  
   Mon Sep  9 11:43:20 2013 Deleting feed file 'feed1.ffm' as stream counts differ (1 != 2)
  
   Mon Sep  9 11:43:20 2013 [AVIOContext @ 0x210d660]Statistics: 4096 bytes read, 0 seeks
  
   Mon Sep  9 11:43:20 2013 [AVIOContext @ 0x210a9a0]Statistics: 0 seeks, 1 writeouts
  
   Mon Sep  9 11:43:20 2013 FFserver started.
  
   Mon Sep  9 11:44:18 2013 File '/feed1.ffm' not found
  
   Mon Sep  9 11:44:18 2013 127.0.0.1 - - [POST] "/feed1.ffm HTTP/1.1" 404 149

  After i set a correct feed, i got another exception on ffmpeg side :

  sudo ffmpeg -loop 1 -i fon.jpeg -vcodec mjpeg -f mjpeg http://localhost:8090/feed.ffm
  
  ffmpeg version 2.0 Copyright (c) 2000-2013 the FFmpeg developers
  
  built on Aug 19 2013 23:10:58 with gcc 4.7 (Debian 4.7.2-5)
  
  configuration: 
  
  libavutil      52. 38.100 / 52. 38.100
  
  libavcodec     55. 18.102 / 55. 18.102
  
  libavformat    55. 12.100 / 55. 12.100
  
  libavdevice    55.  3.100 / 55.  3.100
  
  libavfilter     3. 79.101 /  3. 79.101
  
  libswscale      2.  3.100 /  2.  3.100
  
  libswresample   0. 17.102 /  0. 17.102
  
  Input #0, image2, from 'fon.jpeg':
  
  Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
  
  Stream #0:0: Video: mjpeg, yuvj420p, 1280x720 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  Output #0, mjpeg, to 'http://localhost:8090/feed.ffm':
  
  Metadata:
  
  encoder         : Lavf55.12.100
  
  Stream #0:0: Video: mjpeg, yuvj420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 25 tbc
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (mjpeg -> mjpeg)
  
  Press [q] to stop, [?] for help
  
  av_interleaved_write_frame(): Connection reset by peer

  While ffserver shows no error at all :

  sudo ffserver -f  /etc/ffserver3.conf
  
  ffserver version 2.0 Copyright (c) 2000-2013 the FFmpeg developers
  
  built on Aug 19 2013 23:10:58 with gcc 4.7 (Debian 4.7.2-5)
  
  configuration: 
  
  libavutil      52. 38.100 / 52. 38.100
  
  libavcodec     55. 18.102 / 55. 18.102
  
  libavformat    55. 12.100 / 55. 12.100
  
  libavdevice    55.  3.100 / 55.  3.100
  
  libavfilter     3. 79.101 /  3. 79.101
  
  libswscale      2.  3.100 /  2.  3.100
  
  libswresample   0. 17.102 /  0. 17.102
  
  Mon Sep  9 12:08:19 2013 FFserver started.
  
  Mon Sep  9 12:08:40 2013 127.0.0.1 - - [POST] "/feed.ffm HTTP/1.1" 200 4096
  
  Mon Sep  9 12:12:28 2013 127.0.0.1 - - [GET] "/ HTTP/1.1" 200 1847

  So, what is the problem now ?

• ffmpeg usage corrupts pointer to filenames

  1er décembre 2014, par user296612

  Say I have 2 files in a folder named ’jack.aac’ and ’jill.aac’, and I run the following script ;

  ls -f -tr *.aac |
  
  while read i; do
  
  echo $i
  
  done

  • I get ’jack.aac’ and ’jill.aac’ printed as expected. If however I include ’ffmpeg -i "$i" -f ffmetadata metadata.txt’ in the while-loop, the second filename to be ’read’ ends up missing a character - ’ack.aac’ (instead of ’jack.aac’) for instance. ffmpeg-usage somehow seems to alter the pointer-to-filenames value. Can anyone tell me how to get around this ?

• Play MPEG-CENC encrypted local file on android

  26 mai 2018, par rd7773

  I need to decrypt and play a cenc-aes-ctr mp4 video on the fly which is locally stored on the device.
  The video was encrypted at server end by using following ffmpeg command and then downloaded to phone :

  ffmpeg -i SampleVideo_1280x720_1mb.mp4 -vcodec copy -acodec copy -encryption_scheme cenc-aes-ctr -encryption_key 76a6c65c5ea762046bd749a2e632ccbb -encryption_kid a7e61c373e219033c21091fa607bf3b8 SampleVideo_1280x720_1mb_encrypted.mp4

  It is successfully getting played with ffmpeg command :

  ffplay SampleVideo_1280x720_1mb_encrypted.mp4 -decryption_key 76a6c65c5ea762046bd749a2e632ccbb

  But I do not want to use ffmpeg in android so I am using libeasy library which creates a local http server to make a stream of offline video and then decrypt it on the fly using Cipher. The Cipher which is provided to the LocalHttpServer for decryption process, needs the initialisation vector (iv) for CTR mode which is not externally available to us.
  From above command it is clear that ffmpeg doesn’t require the IV for encryption or decryption to be passed but i guess internally it uses 8 byte random iv.

  This is how i am creating Cipher to pass to LocalHttpServer :

  final Cipher c = Cipher.getInstance("AES/CTR/NoPadding","BC);
  
  c.init(Cipher.DECRYPT_MODE, new SecretKeySpec(hexStringToBytes("76a6c65c5ea762046bd749a2e632ccbb"), "AES"), new IvParameterSpec(new byte[16]));

  So my question is, what value of iv should i pass in this case to Cipher ? My basic requirement is to play a offline MPEG-CENC encrypted mp4 video stored on device.
  Keeping in mind my very limited knowledge of cryptography, references to any library that provides such implementation with or without any tweaks is welcomed.