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• Quicktime cannot play recorded mp4 video file

  17 septembre 2014, par Dude

  I have an mp4 related issue. I’m not very good in video processing related stuff. We have a problem with an image file that is recorded via HTTP Live Streaming (HLS) from a live stream. The HLS chunks are just put together and saved on the file system as .mp4 file. This file cannot be played with Apple QuickTime. VLC can play it. But it is a requirement that it can be played with QuickTime.

  However, I found a solution that works. When I use the ffmpeg command -reset_timestamps, the video file can be played with QuickTime. I also see which parameter changes. It’s the start value.

  Before use of the command :

  ffmpeg -i recorded_file.mp4 
  
  
  
  ffmpeg version 1.2.4 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Jan  9 2014 09:06:57 with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
  
    libavutil      52. 18.100 / 52. 18.100
  
    libavcodec     54. 92.100 / 54. 92.100
  
    libavformat    54. 63.104 / 54. 63.104
  
    libavdevice    54.  3.103 / 54.  3.103
  
    libavfilter     3. 42.103 /  3. 42.103
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  [h264 @ 0x7fcb7b015a00] non-existing SPS 2 referenced in buffering period
  
  [h264 @ 0x7fcb7b015a00] non-existing PPS referenced
  
  [h264 @ 0x7fcb7b015a00] non-existing SPS 2 referenced in buffering period
  
  [h264 @ 0x7fcb7b015a00] non-existing PPS 0 referenced
  
  [h264 @ 0x7fcb7b015a00] decode_slice_header error
  
  [h264 @ 0x7fcb7b015a00] no frame!
  
  [mpegts @ 0x7fcb7b004a00] max_analyze_duration 5000000 reached at 5013333 microseconds
  
  [mpegts @ 0x7fcb7b004a00] Could not find codec parameters for stream 2 (Unknown: none ([21][0][0][0] / 0x0015)): unknown codec
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  [NULL @ 0x7fcb7b016a00] start time is not set in estimate_timings_from_pts
  
  Input #0, mpegts, from 'recorded_file.mp4':
  
    Duration: 00:25:00.01, start: 68428.580933, bitrate: 1499 kb/s
  
    Program 1 
  
      Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
  
      Stream #0:1[0x101]: Audio: aac ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 124 kb/s
  
      Stream #0:2[0x102]: Unknown: none ([21][0][0][0] / 0x0015)

  Use of the command :

  ffmpeg -i recorded_file.mp4 output.mp4 -reset_timestamps 0

  File after use of the command :

  ffmpeg -i output.mp4 
  
  
  
  ffmpeg version 1.2.4 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Jan  9 2014 09:06:57 with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
  
    libavutil      52. 18.100 / 52. 18.100
  
    libavcodec     54. 92.100 / 54. 92.100
  
    libavformat    54. 63.104 / 54. 63.104
  
    libavdevice    54.  3.103 / 54.  3.103
  
    libavfilter     3. 42.103 /  3. 42.103
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf54.63.104
  
    Duration: 00:25:00.04, start: 0.021333, bitrate: 1358 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], 1224 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s
  
      Metadata:
  
        handler_name    : SoundHandler

  A lot of the text output changes but the line with the duration, start and bitrate is interesting, as the start value is set to near zero.

  Duration: 00:25:00.04, start: 0.021333, bitrate: 1358 kb/s

  So to use this solution would be enough. The problem is, I cannot use ffmpeg in the solution that downloads the file (it’s for Android). So I try to find a way to do this in Java. However, as I have not much experience in Video processing, I can’t figure out, what this ffmpeg command does and therefore don’t know in which direction to look for a Java solution.

  Is there a library that may do the same operation in Java or is there an easy way to do it myself in Java (like adjusting the file timestamp) ?

  Thanks for you help !

  EDIT : The whole console output is now shown, instead of just a part of it.

• FFMPEG to Youtube Live

  12 juin 2020, par Vishnu Prassad

  I have an audio stream, im using ffmpeg to stream it to youtube live with an image as background with following command,

  



  ffmpeg -loop 1 -i x.jpg -i  http://xxx.xxx.xxx.xxxx:5305/stream -c:a aac -s 1280x720 -ab 128k -strict experimental -f flv rtmp://a.rtmp.youtube.com/live2/xxxxx

  



  But im getting the following message on youtube,

  



  
YouTube is not receiving enough video to maintain smooth streaming. As such, viewers will experience buffering

this cause buffering in the output stream.

  



  Any one know how to fix it ?

  



  Helps would be appreciated.

  


• Technology Make Video [closed]

  14 novembre 2019, par Soul

  I want to make a video maker like promo.com (Merge multiple video forms, insert text and effects into the video).

  But don’t know which technology or language supports this.

  I am currently learning ffmpeg, but I find it quite complicated and difficult to use.

  May people have experience sharing the appropriate technology or language.

  Thanks.