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• Webm video playing video & audio in Movies & TV app but will only play video in windows media player and html ?

  24 décembre 2019, par Kate LeVering

  I have created a webm video file with transparency with ffmpeg out of a series of png files. Then I add the audio track again in ffmpeg (I have tried both the opus and vorbis codecs). When I play it in the Movies & TV app it plays just fine (audio and video). In windows media player only the video plays. In html (inside a video tag) the video will play if it is set to ’muted’ but if it is not muted it doesn’t play.

  I am not sure what is going on. Does anyone have any insights. Do I need to run the audio from a seperate file ?

  Thanks, Kate

• FFMpeg generated m3u8 segmented videos takes forever to start playing

  20 novembre 2014, par Michael Gaylord

  I am using ffmpeg to generate a segmented list of files in order to stream them to an iOS app. The list of files is generated fine but when it comes time to play them, the video needs to be downloaded in its entirety before playback starts. This behaviour seems to be the case on iOS, Safari and VLC.

  Does anybody know why this is happening and how I can improve the performance of playback ? I have complete control over how the files are recorded in iOS, as well as how they are processed. Here is a sample stream :

  http://www.bytesizecreations.com/storie-test/hls.m3u8

  Here are my ffmpeg commands to generate the segments from the file :

  ffmpeg -i joined.ts -flags -global_header -vcodec copy -acodec copy -map 0 -f segment -segment_time 2 -segment_list hls.m3u8 -segment_list_size 999999 -segment_format mpegts out%03d.ts

  Here is the output of ffprobe on the file :

    libavutil      54.  7.100 / 54.  7.100
  
    libavcodec     56.  1.100 / 56.  1.100
  
    libavformat    56.  4.101 / 56.  4.101
  
    libavdevice    56.  0.100 / 56.  0.100
  
    libavfilter     5.  1.100 /  5.  1.100
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  0.100 /  3.  0.100
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  0.100 / 53.  0.100
  
  Input #0, mpegts, from 'joined.ts':
  
    Duration: 00:00:07.96, start: 1.441667, bitrate: 3899 kb/s
  
    Program 1 
  
      Metadata:
  
        service_name    : Service01
  
        service_provider: FFmpeg
  
      Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1280x720, 24 fps, 24 tbr, 90k tbn, 180k tbc
  
      Stream #0:1[0x101](und): Audio: aac ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp, 222 kb/s

• video after ffmpeg command conversion is not playing on windows

  10 décembre 2015, par Hemant Kumar

  I am stuck at a very weird and complex problem, hoping if anyone know the solution :

  I am converting user uploaded video using ffmpeg command on server and it was working fine as well. Today I found that if a video is recorded by a webcam from windows, is playing well in linux as well as on windows where as if user is creating a video by webcam from linux, is playing only on linux (any browser). On window it’s screen either show loading icon or black screen while audio is working fine.

  I am using following codec :

  ['-strict', '-2', '-preset slow', '-maxrate 500k', '-bufsize 1000k', vfOption, '-threads 0', '-ab 64k', '-movflags faststart','-vf scale=-1:480', '-metadata:s:v:0 rotate=0', '-vcodec libx264']

  I work on linux and using html5 player on my website. I am converting video in mp4 format.

  Input :

  ffmpeg -i /<server path="path">/stream_FE2AF05B-E630-1F7B-390B-37325B31B362.flv -strict -2 -vcodec libx264 -preset slow -vb 500k -maxrate 500k -bufsize 1000k -vf 'scale=-1:480 ' -threads 0 -ab 64k -s 640x480 -movflags faststart -metadata:s:v:0 rotate=0 /<server path="path">/testing.mp4
  
  </server></server>

  Output :

  ffmpeg version 2.2.5 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Aug  1 2014 09:24:02 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libtheora --enable-libx264 --enable-libvpx --enable-libmp3lame
  
    libavutil      52. 66.100 / 52. 66.100
  
    libavcodec     55. 52.102 / 55. 52.102
  
    libavformat    55. 33.100 / 55. 33.100
  
    libavdevice    55. 10.100 / 55. 10.100
  
    libavfilter     4.  2.100 /  4.  2.100
  
    libswscale      2.  5.102 /  2.  5.102
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, flv, from '/<server path="path">/stream_FE2AF05B-E630-1F7B-390B-37325B31B362.flv':
  
    Metadata:
  
      canSeekToEnd    : true
  
    Duration: 00:00:04.04, start: 0.000000, bitrate: 636 kb/s
  
      Stream #0:0: Video: flv1, yuv420p, 640x480, 1k tbr, 1k tbn, 1k tbc
  
      Stream #0:1: Audio: nellymoser, 44100 Hz, mono, flt
  
  [libx264 @ 0x23c5340] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x23c5340] profile High, level 5.2
  
  [libx264 @ 0x23c5340] 264 - core 142 r2453 ea0ca51 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=8 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=24 lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=cbr mbtree=1 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=500 vbv_bufsize=1000 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to '/<server path="path">/testing.mp4':
  
    Metadata:
  
      canSeekToEnd    : true
  
      encoder         : Lavf55.33.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480, q=-1--1, 500 kb/s, 16k tbn, 1k tbc
  
      Metadata:
  
        rotate          : 0
  
      Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 64 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (flv -> libx264)
  
    Stream #0:1 -> #0:1 (nellymoser -> aac)
  
  Press [q] to stop, [?] for help
  
  [mp4 @ 0x23c0200] Starting second pass: moving the moov atom to the beginning of the file2 drop=0    
  
  frame= 4020 fps=706 q=-1.0 Lsize=     355kB time=00:00:04.08 bitrate= 712.0kbits/s dup=3931 drop=0    
  
  video:271kB audio:32kB subtitle:0 data:0 global headers:0kB muxing overhead 16.957901%
  
  [libx264 @ 0x23c5340] frame I:17    Avg QP:27.55  size:  7119
  
  [libx264 @ 0x23c5340] frame P:1013  Avg QP:25.37  size:    88
  
  [libx264 @ 0x23c5340] frame B:2990  Avg QP:27.32  size:    22
  
  [libx264 @ 0x23c5340] consecutive B-frames:  0.8%  0.0%  0.1% 99.1%
  
  [libx264 @ 0x23c5340] mb I  I16..4: 42.0% 55.1%  2.9%
  
  [libx264 @ 0x23c5340] mb P  I16..4:  0.3%  0.4%  0.0%  P16..4:  0.6%  0.1%  0.0%  0.0%  0.0%    skip:98.6%
  
  [libx264 @ 0x23c5340] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.2%  0.0%  0.0%  direct: 0.0%  skip:99.8%  L0:35.7% L1:64.3% BI: 0.0%
  
  [libx264 @ 0x23c5340] 8x8 transform intra:55.0% inter:84.5%
  
  [libx264 @ 0x23c5340] direct mvs  spatial:87.6% temporal:12.4%
  
  [libx264 @ 0x23c5340] coded y,uvDC,uvAC intra: 33.4% 51.9% 0.7% inter: 0.0% 0.1% 0.0%
  
  [libx264 @ 0x23c5340] i16 v,h,dc,p: 26% 54% 15%  5%
  
  [libx264 @ 0x23c5340] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 16% 53%  3%  1%  2%  2%  3%  3%
  
  [libx264 @ 0x23c5340] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 15% 20% 13% 14%  5%  7%  7% 11%  8%
  
  [libx264 @ 0x23c5340] i8c dc,h,v,p: 43% 31% 23%  3%
  
  [libx264 @ 0x23c5340] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x23c5340] ref P L0: 80.9%  9.0%  6.9%  2.6%  0.7%
  
  [libx264 @ 0x23c5340] ref B L0: 89.4%  8.6%  1.8%  0.2%
  
  [libx264 @ 0x23c5340] ref B L1: 91.0%  9.0%
  
  [libx264 @ 0x23c5340] kb/s:551.72
  
  </server></server>

  ---

  Outout from file recorded on window :

  Input :

  ffmpeg -i /<server path="path">/stream_window.flv -strict -2 -vcodec libx264 -preset slow -vb 500k -maxrate 500k -bufsize 1000k -vf 'scale=-1:480 ' -threads 0 -ab 64k -s 640x480 -movflags faststart -metadata:s:v:0 rotate=0 /<server path="path">/testing_1.mp4
  
  </server></server>

  Output :

  ffmpeg version 2.2.5 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Aug  1 2014 09:24:02 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libtheora --enable-libx264 --enable-libvpx --enable-libmp3lame
  
    libavutil      52. 66.100 / 52. 66.100
  
    libavcodec     55. 52.102 / 55. 52.102
  
    libavformat    55. 33.100 / 55. 33.100
  
    libavdevice    55. 10.100 / 55. 10.100
  
    libavfilter     4.  2.100 /  4.  2.100
  
    libswscale      2.  5.102 /  2.  5.102
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, flv, from '/<server path="path">/stream_window.flv':
  
    Metadata:
  
      canSeekToEnd    : true
  
    Duration: 00:00:09.22, start: 0.000000, bitrate: 420 kb/s
  
      Stream #0:0: Video: flv1, yuv420p, 640x480, 1k tbr, 1k tbn, 1k tbc
  
      Stream #0:1: Audio: nellymoser, 44100 Hz, mono, flt
  
  [libx264 @ 0x1e09fc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x1e09fc0] profile High, level 5.2
  
  [libx264 @ 0x1e09fc0] 264 - core 142 r2453 ea0ca51 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=8 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=24 lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=cbr mbtree=1 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=500 vbv_bufsize=1000 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to '/<server path="path">/testing_1.mp4':
  
    Metadata:
  
      canSeekToEnd    : true
  
      encoder         : Lavf55.33.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480, q=-1--1, 500 kb/s, 16k tbn, 1k tbc
  
      Metadata:
  
        rotate          : 0
  
      Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 64 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (flv -> libx264)
  
    Stream #0:1 -> #0:1 (nellymoser -> aac)
  
  Press [q] to stop, [?] for help
  
  [mp4 @ 0x1e06220] Starting second pass: moving the moov atom to the beginning of the file7 drop=0    
  
  frame= 8936 fps=703 q=-1.0 Lsize=     771kB time=00:00:09.26 bitrate= 681.5kbits/s dup=8907 drop=0    
  
  video:585kB audio:73kB subtitle:0 data:0 global headers:0kB muxing overhead 17.106213%
  
  [libx264 @ 0x1e09fc0] frame I:40    Avg QP:29.54  size:  7449
  
  [libx264 @ 0x1e09fc0] frame P:2248  Avg QP:30.88  size:    69
  
  [libx264 @ 0x1e09fc0] frame B:6648  Avg QP:39.17  size:    22
  
  [libx264 @ 0x1e09fc0] consecutive B-frames:  0.8%  0.0%  0.1% 99.1%
  
  [libx264 @ 0x1e09fc0] mb I  I16..4: 36.8% 60.7%  2.5%
  
  [libx264 @ 0x1e09fc0] mb P  I16..4:  0.2%  0.3%  0.0%  P16..4:  0.4%  0.0%  0.0%  0.0%  0.0%    skip:98.9%
  
  [libx264 @ 0x1e09fc0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.2%  0.0%  0.0%  direct: 0.0%  skip:99.8%  L0:34.2% L1:65.8% BI: 0.0%
  
  [libx264 @ 0x1e09fc0] 8x8 transform intra:60.6% inter:87.6%
  
  [libx264 @ 0x1e09fc0] direct mvs  spatial:72.8% temporal:27.2%
  
  [libx264 @ 0x1e09fc0] coded y,uvDC,uvAC intra: 36.3% 62.8% 4.7% inter: 0.0% 0.0% 0.0%
  
  [libx264 @ 0x1e09fc0] i16 v,h,dc,p: 33% 46% 15%  7%
  
  [libx264 @ 0x1e09fc0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 19% 46%  3%  1%  1%  1%  2%  4%
  
  [libx264 @ 0x1e09fc0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36% 17% 14%  9%  4%  4%  5%  5%  7%
  
  [libx264 @ 0x1e09fc0] i8c dc,h,v,p: 42% 31% 23%  4%
  
  [libx264 @ 0x1e09fc0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x1e09fc0] ref P L0: 82.6%  9.9%  5.2%  1.7%  0.5%
  
  [libx264 @ 0x1e09fc0] ref B L0: 87.1% 11.0%  1.4%  0.4%
  
  [libx264 @ 0x1e09fc0] ref B L1: 90.3%  9.7%
  
  [libx264 @ 0x1e09fc0] kb/s:536.03
  
  </server></server>

  ---

  Can anyone figure what could be the problem ?

  @LordNeckbeard : Please find the command and its output above. Thanks