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• FFmpeg : no image is displayed when broadcasting flv made of speex / mellymoser and libx264

  15 septembre 2013, par wvxvw

  ffmpeg -f alsa -i hw:PCH,0 -f x11grab -s 1920x1200 -r 15 -i :0.0 \
  
      -acodec nellymoser -ar 22050 -ac 1 -audio_preload 1000000 -vcodec libx264 \
  
      -preset fast -pix_fmt yuv420p -s 1280x800 -maxrate 1000k -threads 0 -f flv "$URL"

  This is the command I'm using, but I don't get any visible output, only sound. FFmpeg gives no warnings. What am I doing wrong ?

  ---

  If I remove -audio_preload, the streaming works, but the audio comes with increasing delay (grows about a minute every minute).

  ---

  The output, as per request :

  ffmpeg version 1.0.7 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on May 14 2013 21:59:35 with gcc 4.7.2 (GCC) 20121109 (Red Hat 4.7.2-8)
  
    configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic' --enable-bzlib --disable-crystalhd --enable-frei0r --enable-gnutls --enable-libass --enable-libcdio --enable-libcelt --enable-libdc1394 --disable-indev=jack --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-openal --enable-libopencv --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab --enable-avfilter --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-runtime-cpudetect
  
    libavutil      51. 73.101 / 51. 73.101
  
    libavcodec     54. 59.100 / 54. 59.100
  
    libavformat    54. 29.104 / 54. 29.104
  
    libavdevice    54.  2.101 / 54.  2.101
  
    libavfilter     3. 17.100 /  3. 17.100
  
    libswscale      2.  1.101 /  2.  1.101
  
    libswresample   0. 15.100 /  0. 15.100
  
    libpostproc    52.  0.100 / 52.  0.100
  
  [alsa @ 0xc5e8e0] Estimating duration from bitrate, this may be inaccurate
  
  Guessed Channel Layout for  Input Stream #0.0 : stereo
  
  Input #0, alsa, from 'hw:PCH,0':
  
    Duration: N/A, start: 1379234523.677560, bitrate: 1536 kb/s
  
      Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
  
  [x11grab @ 0xc6cda0] device: :0.0 -> display: :0.0 x: 0 y: 0 width: 1920 height: 1200
  
  [x11grab @ 0xc6cda0] shared memory extension found
  
  [x11grab @ 0xc6cda0] Estimating duration from bitrate, this may be inaccurate
  
  Input #1, x11grab, from ':0.0':
  
    Duration: N/A, start: 1379234523.843273, bitrate: 1105920 kb/s
  
      Stream #1:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1920x1200, 1105920 kb/s, 15 tbr, 1000k tbn, 15 tbc
  
  [libx264 @ 0xc59e00] VBV maxrate specified, but no bufsize, ignored
  
  [libx264 @ 0xc59e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  
  [libx264 @ 0xc59e00] profile High, level 3.2
  
  [libx264 @ 0xc59e00] 264 - core 128 r2223 f6a8615 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=2 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=6 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=1 keyint=250 keyint_min=15 scenecut=40 intra_refresh=0 rc_lookahead=30 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, flv, to 'rtmp://live.justin.tv/app/live_key':
  
    Metadata:
  
      encoder         : Lavf54.29.104
  
      Stream #0:0: Video: h264 ([7][0][0][0] / 0x0007), yuv420p, 1280x800, q=-1--1, 1k tbn, 15 tbc
  
      Stream #0:1: Audio: nellymoser ([6][0][0][0] / 0x0006), 22050 Hz, mono, flt, 128 kb/s
  
  Stream mapping:
  
    Stream #1:0 -> #0:0 (rawvideo -> libx264)
  
    Stream #0:0 -> #0:1 (pcm_s16le -> nellymoser)
  
  Press [q] to stop, [?] for help
  
  [alsa @ 0xc5e8e0] ALSA buffer xrun.

• FFmpeg audio dont work in converted videos

  28 octobre 2013, par Bar Cumberworth

  NOTICE : when i convert videos via terminal and download them from ftp into pc the audio works fine. I use :

  if($ext == "avi" && $convert_avi == true)
  
              {
  
                  $convert_source = _VIDEOS_DIR_PATH.$new_name;
  
                  $conv_name = substr(md5($file['name'].rand(1,888)), 2, 10).".mp4";
  
                  $converted_file  = _VIDEOS_DIR_PATH.$conv_name;
  
                  $ffmpeg_command = 'ffmpeg -i '.$convert_source.' -acodec libmp3lame -vcodec libx264 -s 1280x720 -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 '.$converted_file;
  
                  echo exec($ffmpeg_command);
  
                  $sql = "UPDATE pm_temp SET url = '".$conv_name."' WHERE url = '".$new_name."' LIMIT 1";
  
                  $result = @mysql_query($sql);
  
                  unlink($convert_source);    
  
              }

  This code to convert avi to mp4 ffmpeg concole output :

  root@1tb:~# ffmpeg -i sample.avi -acodec libmp3lame -vcodec libx264 -s 1280x720 -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 goodsample.mp4
  
  ffmpeg version 0.7.15, Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Feb 22 2013 07:18:58 with gcc 4.4.5
  
    configuration: --enable-libdc1394 --prefix=/usr --extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-avfilter --enable-libdirac --disable-decoder=libdirac --enable-libfreetype --enable-libschroedinger --disable-encoder=libschroedinger -                                                                                                                                                             s
  
    libavutil    50. 43. 0 / 50. 43. 0
  
    libavcodec   52.123. 0 / 52.123. 0
  
    libavformat  52.111. 0 / 52.111. 0
  
    libavdevice  52.  5. 0 / 52.  5. 0
  
    libavfilter   1. 80. 0 /  1. 80. 0
  
    libswscale    0. 14. 1 /  0. 14. 1
  
    libpostproc  51.  2. 0 / 51.  2. 0
  
  [mp3 @ 0x191d4100] Header missing
  
  [mpeg4 @ 0x191d1dc0] Invalid and inefficient vfw-avi packed B frames detected
  
  Input #0, avi, from 'sample.avi':
  
    Metadata:
  
      encoder         : VirtualDubMod 1.5.10.2 (build 2540/release)
  
    Duration: 00:01:01.81, start: 0.000000, bitrate: 1194 kb/s
  
      Stream #0.0: Video: mpeg4, yuv420p, 640x352 [PAR 1:1 DAR 20:11], 23.98 tbr,
  
      Stream #0.1: Audio: mp3, 48000 Hz, stereo, s16, 128 kb/s
  
  [buffer @ 0x191d1c80] w:640 h:352 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
  
  [scale @ 0x191d6880] w:640 h:352 fmt:yuv420p -> w:1280 h:720 fmt:yuv420p flags:0
  
  [libx264 @ 0x191ce5a0] Default settings detected, using medium profile
  
  [libx264 @ 0x191ce5a0] using SAR=45/44
  
  [libx264 @ 0x191ce5a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle S
  
  [libx264 @ 0x191ce5a0] profile High, level 3.1
  
  [libx264 @ 0x191ce5a0] 264 - core 118 - H.264/MPEG-4 AVC codec - Copyleft 2003-2                                                                                                                                                             6 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_off                                                                                                                                                             1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_l
  
  Output #0, mp4, to 'goodsample.mp4':
  
    Metadata:
  
      encoder         : Lavf52.111.0
  
      Stream #0.0: Video: libx264, yuv420p, 1280x720 [PAR 45:44 DAR 20:11], q=2-31
  
      Stream #0.1: Audio: libmp3lame, 44100 Hz, stereo, s16, 64 kb/s
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
    Stream #0.1 -> #0.1
  
  Press [q] to stop, [?] for help
  
  [mp3 @ 0x191d4100] Header missing
  
  Error while decoding stream #0.1
  
  [mpeg4 @ 0x191d1dc0] Invalid and inefficient vfw-avi packed B frames detected
  
  [mp3 @ 0x191d4100] incomplete frame 9467kB time=00:01:00.32 bitrate=1285.5kbits/
  
  Error while decoding stream #0.1
  
  frame= 1852 fps= 20 q=29.0 Lsize=    9652kB time=00:01:01.72 bitrate=1280.9kbits
  
  video:9121kB audio:483kB global headers:0kB muxing overhead 0.499688%
  
  frame I:11    Avg QP:16.78  size: 51456
  
  [libx264 @ 0x191ce5a0] frame P:784   Avg QP:20.81  size:  8954
  
  [libx264 @ 0x191ce5a0] frame B:1057  Avg QP:26.06  size:  1659
  
  [libx264 @ 0x191ce5a0] consecutive B-frames: 22.0%  3.1%  7.5% 67.4%
  
  [libx264 @ 0x191ce5a0] mb I  I16..4: 31.1% 59.8%  9.1%
  
  [libx264 @ 0x191ce5a0] mb P  I16..4:  1.8%  2.6%  0.2%  P16..4: 24.3%  7.0%  4.0
  
  [libx264 @ 0x191ce5a0] mb B  I16..4:  0.1%  0.1%  0.0%  B16..8: 22.7%  0.8%  0.2
  
  [libx264 @ 0x191ce5a0] 8x8 transform intra:57.0% inter:72.6%
  
  [libx264 @ 0x191ce5a0] coded y,uvDC,uvAC intra: 44.4% 33.3% 10.3% inter: 7.6% 5.
  
  [libx264 @ 0x191ce5a0] i16 v,h,dc,p: 68% 14%  8% 10%
  
  [libx264 @ 0x191ce5a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 14% 27%  5%  7%  7%  6
  
  [libx264 @ 0x191ce5a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 14% 14%  6% 10%  9%  7
  
  [libx264 @ 0x191ce5a0] i8c dc,h,v,p: 67% 13% 17%  3%
  
  [libx264 @ 0x191ce5a0] Weighted P-Frames: Y:1.9% UV:0.4%
  
  [libx264 @ 0x191ce5a0] ref P L0: 62.2% 12.8% 10.3% 14.5%  0.2%
  
  [libx264 @ 0x191ce5a0] ref B L0: 88.1%  5.5%  6.4%
  
  [libx264 @ 0x191ce5a0] ref B L1: 95.7%  4.3%
  
  [libx264 @ 0x191ce5a0] kb/s:1209.03

  I know there is couple errors tough, but i dont know hot to fix it. Also i would be very thankfull if someone can help reduce video size but is not main problem video weights as original avi but sill.

• Add black video to video with sound

  4 février 2017, par garrettlynch

  I’m trying to insert 13 seconds of black video at the start of a video that has sound using ffmpeg like so :

  ffmpeg -f lavfi -i "color=c=black:s=720x406:r=25:sar=1/1" -i input.mp4 -filter_complex \
  
  "[0:v] trim=end=13,setpts=PTS-STARTPTS [blackstart]; \
  
  [blackstart] [1:v] concat=n=2:v=1:a=0[out]" \
  
   -map "[out]" -c:a copy output.mp4

  However the sound is not being maintained. What am I doing incorrectly ? -c:a copy does not seem to work should I be using a [1:a] somewhere ?

  garrett-retina:~ garrett-macbookretina$ ffmpeg -f lavfi -i "color=c=red:s=720x406:r=25:sar=1/1" -i input.mp4 -filter_complex \
  
  > "[0:v] trim=end=13,setpts=PTS-STARTPTS [blackstart]; \
  
  > [blackstart] [1:v] concat=n=2:v=1:a=0[out]" \
  
  >  -map "[out]" -c:a copy output.mp4
  
  ffmpeg version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with Apple LLVM version 5.0 (clang-500.2.76) (based on LLVM 3.3svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
  
    libavutil      55. 34.100 / 55. 34.100
  
    libavcodec     57. 64.101 / 57. 64.101
  
    libavformat    57. 56.100 / 57. 56.100
  
    libavdevice    57.  1.100 / 57.  1.100
  
    libavfilter     6. 65.100 /  6. 65.100
  
    libavresample   3.  1.  0 /  3.  1.  0
  
    libswscale      4.  2.100 /  4.  2.100
  
    libswresample   2.  3.100 /  2.  3.100
  
    libpostproc    54.  1.100 / 54.  1.100
  
  Input #0, lavfi, from 'color=c=red:s=720x406:r=25:sar=1/1':
  
    Duration: N/A, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x406 [SAR 1:1 DAR 360:203], 25 tbr, 25 tbn, 25 tbc
  
  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.56.100
  
    Duration: 33:59:47.32, start: 0.000000, bitrate: 179 kb/s
  
      Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 720x406 [SAR 1:1 DAR 360:203], 62 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 16000 Hz, stereo, fltp, 114 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  [libx264 @ 0x7fa344048400] using SAR=1/1
  
  [libx264 @ 0x7fa344048400] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x7fa344048400] profile High, level 3.0
  
  [libx264 @ 0x7fa344048400] 264 - core 148 r2748 97eaef2 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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=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, mp4, to '/Users/garrett-macbookretina/Desktop/Best of Luck With the Wall/exports/test.mp4':
  
    Metadata:
  
      encoder         : Lavf57.56.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x406 [SAR 1:1 DAR 360:203], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
  
      Metadata:
  
        encoder         : Lavc57.64.101 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  Stream mapping:
  
    Stream #0:0 (rawvideo) -> trim
  
    Stream #1:0 (h264) -> concat:in1:v0
  
    concat -> Stream #0:0 (libx264)
  
  Press [q] to stop, [?] for help
  
  frame=3060008 fps=432 q=-1.0 Lsize=  957795kB time=34:00:00.20 bitrate=  64.1kbits/s speed=17.3x    
  
  video:921972kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.885564%
  
  [libx264 @ 0x7fa344048400] frame I:16585 Avg QP:13.67  size: 49743
  
  [libx264 @ 0x7fa344048400] frame P:770518 Avg QP:16.48  size:    91
  
  [libx264 @ 0x7fa344048400] frame B:2272905 Avg QP:25.11  size:    22
  
  [libx264 @ 0x7fa344048400] consecutive B-frames:  0.9%  0.1%  0.4% 98.6%
  
  [libx264 @ 0x7fa344048400] mb I  I16..4: 10.2% 39.7% 50.1%
  
  [libx264 @ 0x7fa344048400] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.7%  0.0%  0.0%  0.0%  0.0%    skip:99.1%
  
  [libx264 @ 0x7fa344048400] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.2%  0.0%  0.0%  direct: 0.0%  skip:99.8%  L0:46.9% L1:53.1% BI: 0.1%
  
  [libx264 @ 0x7fa344048400] 8x8 transform intra:39.9% inter:52.0%
  
  [libx264 @ 0x7fa344048400] coded y,uvDC,uvAC intra: 86.1% 77.1% 60.4% inter: 0.0% 0.1% 0.0%
  
  [libx264 @ 0x7fa344048400] i16 v,h,dc,p: 66% 10% 13% 11%
  
  [libx264 @ 0x7fa344048400] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 20% 14%  6%  7%  7%  7%  7% 11%
  
  [libx264 @ 0x7fa344048400] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 19% 11%  7%  9%  8%  8%  7%  9%
  
  [libx264 @ 0x7fa344048400] i8c dc,h,v,p: 59% 19% 17%  5%
  
  [libx264 @ 0x7fa344048400] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7fa344048400] ref P L0: 53.9%  4.0% 16.6% 25.5%  0.0%
  
  [libx264 @ 0x7fa344048400] ref B L0: 27.9% 71.6%  0.5%
  
  [libx264 @ 0x7fa344048400] ref B L1: 97.6%  2.4%
  
  [libx264 @ 0x7fa344048400] kb/s:61.71
  
  garrett-retina:~ garrett-macbookretina$