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• Dynamically change stream files on vlc or other streamer

  22 octobre 2013, par user2806896

  I've found out how stream all files from a specific folder (e.g. vlc -vvv /home/user/videos/* —sout ...). Problem is that I want to change the content of that folder and that vlc would see that while streamming. In other words, I want to change streamming content dynamically. I haven't found any solutions on the web. Any ideas ?
  Thanks.

  P.S. the streamer can be gstreamer or ffmpeg as well.

  P.S.S. Linux platfrom.

• Set timeout on ffmpeg process

  30 octobre 2013, par Thomas Vervik

  Sometims ffmpeg never completes, and thereby preventing conversions of other videos in the queue. Is it possible to set some sort of timeout in ffmpeg such that it terminates if it isnt finished within some given time, example 5 min

  My command looks like this today :

   ffmpeg -i /home/tomcat/bsafevideo/1efef9daa7f5000ed83d67f6fbd0e7d9/aad5adc307c4dd7e457509423a7f3734/69451c31cd592e86138423f6849d8141 -y -r 24 -ar 22050 -f mov -vf [in]transpose=1[rt0],[rt0]scale=iw*480/ih:480[sc0],[sc0]pad=640:480:140[pd0],movie=/srv/bsafe/tomcat7/webapps/ROOT/resources/images/logo_watermark.png [wm],[pd0][wm] overlay=W-w-140:0[out] /home/tomcat/bsafevideo/1efef9daa7f5000ed83d67f6fbd0e7d9/aad5adc307c4dd7e457509423a7f3734/69451c31cd592e86138423f6849d8141.mov -ar 22050 -b 1500k -vcodec libtheora -acodec libvorbis -f ogg -vf [in]transpose=1[rt0],[rt0]scale=iw*480/ih:480[sc0],[sc0]pad=640:480:140[pd0],movie=/srv/bsafe/tomcat7/webapps/ROOT/resources/images/logo_watermark.png [wm],[pd0][wm] overlay=W-w-140:0[out] /home/tomcat/bsafevideo/1efef9daa7f5000ed83d67f6fbd0e7d9/aad5adc307c4dd7e457509423a7f3734/69451c31cd592e86138423f6849d8141.ogg -ar 22050 -vcodec libx264 -profile baseline -vf [in]transpose=1[rt0],[rt0]scale=iw*480/ih:480[sc0],[sc0]pad=640:480:140[pd0],movie=/srv/bsafe/tomcat7/webapps/ROOT/resources/images/logo_watermark.png [wm],[pd0][wm] overlay=W-w-140:0[out] /home/tomcat/bsafevideo/1efef9daa7f5000ed83d67f6fbd0e7d9/aad5adc307c4dd7e457509423a7f3734/69451c31cd592e86138423f6849d8141_mp4.mp4

  UPDATE. Thanks LordNeckBerd, you pointed me in right direction !

  So I see now its kind of not ffmpeg really hanging, the issue is that my java code which reads the inputstream from the linux process will block since ffmpeg never returns a end of line, which I see now when Im running the command. This is the blocking line, it waits for more input from me.

  Press [q] to stop, [?] for help

  So its two issues here now. First is why this particular conversion is failing, and second, how to make sure ffmpeg is not making this (for my Java process) blocking command asking for more input.

  C:\Program Files (x86)\Console2>ffmpeg -i C:/projectsGit/bsafe-server/classes/test/bs-   base/video/ac7601e2bc3bc1545cd30ad3160f5232 -y -r 24 -ar 22050 -f mov C:/projectsGit/bsafe-server/classes/test/bs-base/video/ac7601e2bc3bc1545cd30ad3160f5232.mov -ar 22050 -b:v 1500k -vcodec libtheora -acodec libvorbis -f ogg C:/projectsGit/bsafe-server/classes/test/bs-base/video/ac7601e2bc3bc1545cd30ad3160f5232.ogg -ar 22050 -vcodec libx264 -profile:v baseline C:/projectsGit/bsafe-server/classes/test/bs-base/video/ac7601e2bc3bc1545cd30ad3160f5232_mp4.mp4
  
  ffmpeg version N-54762-g38b701a Copyright (c) 2000-2013 the FFmpeg developers
  
  built on Jul 15 2013 18:47:20 with gcc 4.7.3 (GCC)
  
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --  enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-  libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable- libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable- libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable- libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame - -enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable- libx264 --enable-libxavs --enable-libxvid --enable-zlib
  
  libavutil      52. 39.100 / 52. 39.100
  
  libavcodec     55. 18.102 / 55. 18.102
  
  libavformat    55. 12.102 / 55. 12.102
  
  libavdevice    55.  3.100 / 55.  3.100
  
  libavfilter     3. 81.101 /  3. 81.101
  
  libswscale      2.  3.100 /  2.  3.100
  
  libswresample   0. 17.102 /  0. 17.102
  
  libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:/projectsGit/bsafe-server/classes/test/bs-  base/video/ac7601e2bc3bc1545cd30ad3160f5232':
  
  Metadata:
  
  major_brand     : isom
  
  minor_version   : 0
  
  compatible_brands: isom3gp4
  
  creation_time   : 2013-01-15 05:46:02
  
  Duration: 00:00:10.03, start: 0.000000, bitrate: 394 kb/s
  
  Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 640x480, 264 kb/s, SAR 65536:65536 DAR 4:3, 10.95 fps, 90k tbr, 90k tbn, 180k tbc
  
  Metadata:
  
    creation_time   : 2013-01-15 05:46:02
  
    handler_name    : VideoHandle
  
  Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 127 kb/s
  
  Metadata:
  
    creation_time   : 2013-01-15 05:46:02
  
    handler_name    : SoundHandle
  
   [ogg @ 00000000027d7860] Frame rate very high for a muxer not efficiently supporting it.
  
  Please consider specifying a lower framerate, a different muxer or -vsync 2
  
  [mp4 @ 00000000027dacc0] Frame rate very high for a muxer not efficiently supporting it.
  
  Please consider specifying a lower framerate, a different muxer or -vsync 2
  
  [libx264 @ 0000000003e6b9c0] using SAR=1/1
  
  [libx264 @ 0000000003e6b9c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0000000003e6b9c0] profile High, level 3.0
  
  [libx264 @ 0000000003e6b9c0] 264 - core 133 r2334 a3ac64b - H.264/MPEG-4 AVC codec -   Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=3  deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1  me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1  chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1  interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0  direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=24 scenecut=40  intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69  qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  [libx264 @ 00000000027db4a0] using SAR=1/1
  
  [libx264 @ 00000000027db4a0] MB rate (108000000) > level limit (2073600)
  
  [libx264 @ 00000000027db4a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 00000000027db4a0] profile Constrained Baseline, level 5.2
  
  [libx264 @ 00000000027db4a0] 264 - core 133 r2334 a3ac64b - H.264/MPEG-4 AVC codec -  Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=0 ref=3  deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1  me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1  chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1  interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250  keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0  qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mov, to 'C:/projectsGit/bsafe-server/classes/test/bs-  base/video/ac7601e2bc3bc1545cd30ad3160f5232.mov':
  
  Metadata:
  
  major_brand     : isom
  
  minor_version   : 0
  
  compatible_brands: isom3gp4
  
  encoder         : Lavf55.12.102
  
  Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 640x480 [SAR 1:1  DAR 4:3], q=-1--1, 12288 tbn, 24 tbc
  
  Metadata:
  
    creation_time   : 2013-01-15 05:46:02
  
    handler_name    : VideoHandle
  
  Stream #0:1(eng): Audio: aac (libvo_aacenc) (mp4a / 0x6134706D), 22050 Hz, mono, s16, 128 kb/s
  
  Metadata:
  
    creation_time   : 2013-01-15 05:46:02
  
    handler_name    : SoundHandle
  
  Output #1, ogg, to 'C:/projectsGit/bsafe-server/classes/test/bs-base/video/ac7601e2bc3bc1545cd30ad3160f5232.ogg':
  
  Metadata:
  
  major_brand     : isom
  
  minor_version   : 0
  
  compatible_brands: isom3gp4
  
  encoder         : Lavf55.12.102
  
  Stream #1:0(eng): Video: theora (libtheora), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 1500 kb/s, 90k tbn, 90k tbc
  
  Metadata:
  
    creation_time   : 2013-01-15 05:46:02
  
    handler_name    : VideoHandle
  
  Stream #1:1(eng): Audio: vorbis (libvorbis), 22050 Hz, mono, fltp
  
  Metadata:
  
    creation_time   : 2013-01-15 05:46:02
  
    handler_name    : SoundHandle
  
  Output #2, mp4, to 'C:/projectsGit/bsafe-server/classes/test/bs-base/video/ac7601e2bc3bc1545cd30ad3160f5232_mp4.mp4':
  
  Metadata:
  
  major_brand     : isom
  
  minor_version   : 0
  
  compatible_brands: isom3gp4
  
  encoder         : Lavf55.12.102
  
  Stream #2:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 90k tbn, 90k tbc
  
  Metadata:
  
    creation_time   : 2013-01-15 05:46:02
  
    handler_name    : VideoHandle
  
  Stream #2:1(eng): Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 22050 Hz, mono, s16, 128 kb/s
  
  Metadata:
  
    creation_time   : 2013-01-15 05:46:02
  
    handler_name    : SoundHandle
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (h264 -> libx264)
  
  Stream #0:1 -> #0:1 (aac -> libvo_aacenc)
  
  Stream #0:0 -> #1:0 (h264 -> libtheora)
  
  Stream #0:1 -> #1:1 (aac -> libvorbis)
  
  Stream #0:0 -> #2:0 (h264 -> libx264)
  
  Stream #0:1 -> #2:1 (aac -> libvo_aacenc)
  
  Press [q] to stop, [?] for help

• Can't find preset files

  1er juin 2012, par Bilthon

  this is a ffmpeg issue. I've got this error saying it could not find the hq preset file, then I read in the documentation that it looks for the preset files at 'PREFIX/share/ffmpeg' and also at '$HOME/.ffmpeg'. The thing is I'm calling ffmpeg from whithin a php file that calls a python script that finally executes the command something like 'commands.getstatusoutput(command)' so I was not sure who the user was.

  The solution ? I just used -fpre and my call now looks like this :

  /usr/local/bin/ffmpeg -i ../files/tmpvideos/myStream.flv -y -acodec libfaac -ab 96k -b 800k -maxrate 800k -minrate 600k -bufsize 800k -s 720x640 -vcodec libx264 -g 300 -r 20 -fpre /home/admin/.ffmpeg/libx264-hq.ffpreset -threads 0 ../files/tmpvideos/4647-60.mp4

  I created that directory under /home/admin and am 100% sure that there the file is there now, but still ffmpeg says :

  File for preset '/home/admin/.ffmpeg/libx264-hq.ffpreset' not found

  So I'm not sure why is it not working since I'm specifying the complete path now. Any ideas ?

  One reason that I'm thinking of, is that it maybe was not compiled correctly, like with all the flags and stuff. What I mean is that while some outputs out there looked like this :

  FFmpeg version SVN-r22976, Copyright (c) 2000-2010 the FFmpeg developers
  
    built on Apr 30 2010 12:03:12 with gcc 4.2.1-sjlj (mingw32-2)
  
    configuration: --enable-shared --enable-static --enable-memalign-hack
  
  --enable
  
  -libmp3lame --enable-libx264 --enable-gpl
  
    libavutil     50.14. 0 / 50.14. 0
  
    libavcodec    52.66. 0 / 52.66. 0
  
    libavformat   52.61. 0 / 52.61. 0
  
    libavdevice   52. 2. 0 / 52. 2. 0
  
    libswscale     0.10. 0 /  0.10. 0

  mine looks more like this :

  Output: FFmpeg version 0.6.1, Copyright (c) 2000-2010 the FFmpeg developers
  
    built on Nov 12 2010 16:32:38 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
  
    configuration:
  
    libavutil     50.15. 1 / 50.15. 1
  
    libavcodec    52.72. 2 / 52.72. 2
  
    libavformat   52.64. 2 / 52.64. 2
  
    libavdevice   52. 2. 0 / 52. 2. 0
  
    libswscale     0.11. 0 /  0.11. 0

  No configuration stuff. What do u think ? could be that this ffmpeg was not compiled correctly so it will never find the presets ? I didn't compile it, so can't be sure.

  Thanks and sorry for the verbosity of the question.

  Nelson