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• Museum of Multimedia Software, Part 4

  20 août 2010, par Multimedia Mike — Software Museum

  This is the last part of the series, at least until some more multimedia software shows up at my favorite thrift shop or the other boneyards I scavenge.

  Miscellaneous Multimedia Programs
  This set includes the titles Matinee FMV Screensaver, MetaCreations Painter Classic, and Multimedia JumpStart. The second one is likely a creation program. I have no idea what the third one is, while the first title gives me chills just thinking about the implications.

  
  
  

  Miscellaneous Creativity Software
  Magic Theatre and Microsoft Home : Creative Writer. I think I loaded up the former once to find a very basic animation program. The latter isn’t necessarily multimedia-related but certainly classifies as creative software. It also reminds me of the ad I once spied in Entertainment Weekly magazine during the mid-1990s for a Microsoft music history CD-ROM. MS branched out into all kinds of niches.

  
  
  

  More Multimedia Creativity Software
  VideoCraft and U-Create Games & Animation. I wager these would be fun to play around with if I had the time.

  
  
  

  Showcase CD-ROMs
  "What Can You Make ? Showcase 7" from Macromedia and Microsoft Multimedia Pack 10.

  
  
  

  Basic Multimedia Software Discs
  As a multimedia nerd, these Apple QuickTime and Microsoft Video for Windows discs make me sentimental.

  
  
  

  Real Software Collection
  Grit your teeth and gaze upon CD-ROM distributions of Real’s software. There is a RealAudio disc back from when Real still called themselves Progressive Networks. "Everything you need to hear the web roar !"

  
  
  

  Clips
  And a few multimedia clip CD-ROMs, along with a disc that promises to test and tune your MPC setup.

  
  
  

  Wrap-Up
  I would be remiss if I neglected to mention a few more pieces of multimedia creation software in my collection. First, there’s the Barbie Storymaker. I actually gave that one a go, as you can tragically see from that link. Further, the Taco Bell fast food restaurant chain ran, as one of their many kids meal promotions, a series of 4 simple Comics Constructor CD-ROMs. I played briefly with it here and again during an exploration of XML data formats and the parsing thereof (which the software uses).

• What causes Firefox to refuse playing one specific MP4 that plays well on other browsers, resolution being the only difference ?

  3 décembre 2014, par Faro

  I’m a developer for a PHP powered website that allows the upload of videos which get converted to MP4 using ffmpeg. This setup worked pretty well so far, however today I came across a report of a user that couldn’t play one of the files in Firefox.

  I was unable to replicate the issue on my own machine at first, but using a fresh install of Windows 7 I actually got the same issue : The file will not play in Firefox, but works fine in Chrome. If called up directly, Firefox will say "Video can’t be played because the file is corrupt".
  When downloaded, Windows will also not create a thumbnail of the video for the file and WMP will only play the audio part.

  On my own machine the file works perfectly in WMP which made me wonder if it could be a codec issue (I do have the K-Lite Codec Pack installed), however I’ve compared the file to a working one and the only difference is the resolution, filesize and the format profile which is "High@L3.1" for a working file with a 720p resolution and "High@L4.0" for the non-working one (which is 1600x1200).

  I then read through the Wikipedia article on H.264/MPEG-4 AVC and began to wonder if the level might be the issue, and the tool I used (XMedia Recode) actually did not allow me to set a height bigger than 1080 on Level 4, however when I set the level to 5 and encoded the file again, it still wouldn’t play.

  I did find a note on the MDN page of supported formats which reads :

  Firefox/Firefox for Android/Firefox OS supports the format in some cases, but only when a third-party decoder is available, and the device hardware can handle the profile used to encode the MP4.

  I’m assuming that is why the codec pack would allow Firefox to play even the ’broken’ file on my machine, I still don’t understand though why Firefox does play some files but not this one, especially when Chrome on the same machine plays all of them.

  The line in PHP that starts the conversion is as follows :

  exec("/usr/local/bin/ffmpeg '-i' '" . $file_in . "' '-qscale' '4' '-y' '-threads' '1' '-acodec' 'libvo_aacenc' '-vcodec' 'h264' '" . $file_out . "' 2>&1", $buffer, $success);

  This should produce correct files, and this is indeed the first time a file has issues.

  MediaInfo provides this data for the file stream :

  Video
  
  ID                                       : 1
  
  Format                                   : AVC
  
  Format/Info                              : Advanced Video Codec
  
  Format profile                           : High@L4.0
  
  Format settings, CABAC                   : Yes
  
  Format settings, ReFrames                : 4 frames
  
  Codec ID                                 : avc1
  
  Codec ID/Info                            : Advanced Video Coding
  
  Duration                                 : 12mn 26s
  
  Bit rate                                 : 77.7 Kbps
  
  Width                                    : 1 600 pixels
  
  Height                                   : 1 200 pixels
  
  Display aspect ratio                     : 4:3
  
  Frame rate mode                          : Constant
  
  Frame rate                               : 30.000 fps
  
  Color space                              : YUV
  
  Chroma subsampling                       : 4:2:0
  
  Bit depth                                : 8 bits
  
  Scan type                                : Progressive
  
  Bits/(Pixel*Frame)                       : 0.001
  
  Stream size                              : 6.92 MiB (36%)
  
  Writing library                          : x264 core 142 r14 956c8d8
  
  Encoding settings                        : 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=1 / lookahead_threads=1 / 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
  
  Language                                 : English
  
  
  
  Audio
  
  ID                                       : 2
  
  Format                                   : AAC
  
  Format/Info                              : Advanced Audio Codec
  
  Format profile                           : LC
  
  Codec ID                                 : 40
  
  Duration                                 : 12mn 26s
  
  Duration_LastFrame                       : -10ms
  
  Bit rate mode                            : Constant
  
  Bit rate                                 : 128 Kbps
  
  Channel(s)                               : 2 channels
  
  Channel positions                        : Front: L R
  
  Sampling rate                            : 44.1 KHz
  
  Compression mode                         : Lossy
  
  Stream size                              : 11.4 MiB (60%)
  
  Language                                 : English

  I’ve uploaded a zip with 3 versions of the file, the untouched one, the converted one with the same settings the website would use, and another converted one with level 5.

  Maybe I’m missing something obvious, but I couldn’t find anything wrong with it, what do I need to change in order to produce a file that will work natively in Firefox ?

  Also, this is my first question on SO, so if you see anything that I can improve, please let me know :-)

  Edit : This is the output of calling ffmpeg (with the faststart option)

  /usr/local/bin/ffmpeg '-i' '49cf594e91d0dac376aa0b2b96972ded.mp4' '-movflags' '+faststart' '-qscale' '4' '-y' '-threads' '1' '-acodec' 'libvo_aacenc' '-vcodec' 'h264' 'test.mp4'
  
  
  
  ffmpeg version 1.2.5-   http://johnvansickle.com/ffmpeg/    Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jan 22 2014 20:28:02 with gcc 4.8 (Debian 4.8.2-14)
  
    configuration: --enable-gpl --enable-version3 --disable-shared --disable-debug --enable-runtime-cpudetect --enable-libmp3lame --enable-libx264 --enable-libspeex --enable-libvorbis --enable-libvpx --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --disable-ffserver
  
    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 '49cf594e91d0dac376aa0b2b96972ded.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf54.63.104
  
    Duration: 00:12:26.37, start: 0.036281, bitrate: 214 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1600x1200 [SAR 1:1 DAR 4:3], 77 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Please use -q:a or -q:v, -qscale is ambiguous
  
  [libx264 @ 0x2802ac0] using SAR=1/1
  
  [libx264 @ 0x2802ac0] using cpu capabilities: MMX2 SSE2Fast LZCNT
  
  [libx264 @ 0x2802ac0] profile High, level 4.0
  
  [libx264 @ 0x2802ac0] 264 - core 142 r14 956c8d8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=1 lookahead_threads=1 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 'test.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf54.63.104
  
      Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1600x1200 [SAR 1:1 DAR 4:3], q=-1--1, 15360 tbn, 30 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> libx264)
  
    Stream #0:1 -> #0:1 (aac -> libvo_aacenc)
  
  Press [q] to stop, [?] for help
  
  Starting second pass: moving header on top of the file30.77 bitrate= 202.5kbits/s dup=1 drop=0
  
  frame=15331 fps= 13 q=29.0 Lsize=   13201kB time=00:08:31.03 bitrate= 211.6kbits/s dup=1 drop=0
  
  video:4673kB audio:7986kB subtitle:0 global headers:0kB muxing overhead 4.286767%
  
  [libx264 @ 0x2802ac0] frame I:63    Avg QP:12.37  size: 39759
  
  [libx264 @ 0x2802ac0] frame P:3905  Avg QP:20.36  size:   313
  
  [libx264 @ 0x2802ac0] frame B:11363 Avg QP:33.67  size:    93
  
  [libx264 @ 0x2802ac0] consecutive B-frames:  1.1%  0.1%  0.2% 98.6%
  
  [libx264 @ 0x2802ac0] mb I  I16..4: 48.0% 41.5% 10.5%
  
  [libx264 @ 0x2802ac0] mb P  I16..4:  0.1%  0.2%  0.0%  P16..4:  0.5%  0.0%  0.0%  0.0%  0.0%    skip:99.1%
  
  [libx264 @ 0x2802ac0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.3%  0.0%  0.0%  direct: 0.0%  skip:99.7%  L0:50.2% L1:48.9% BI: 0.8%
  
  [libx264 @ 0x2802ac0] 8x8 transform intra:42.4% inter:36.9%
  
  [libx264 @ 0x2802ac0] coded y,uvDC,uvAC intra: 6.9% 13.4% 9.4% inter: 0.0% 0.1% 0.0%
  
  [libx264 @ 0x2802ac0] i16 v,h,dc,p: 82% 17%  1%  0%
  
  [libx264 @ 0x2802ac0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 20% 49%  0%  0%  0%  0%  0%  0%
  
  [libx264 @ 0x2802ac0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 41% 20% 18%  3%  4%  4%  4%  4%  3%
  
  [libx264 @ 0x2802ac0] i8c dc,h,v,p: 80% 12%  7%  1%
  
  [libx264 @ 0x2802ac0] Weighted P-Frames: Y:0.3% UV:0.3%
  
  [libx264 @ 0x2802ac0] ref P L0: 74.7%  3.8% 10.6% 10.9%  0.0%
  
  [libx264 @ 0x2802ac0] ref B L0: 70.3% 28.9%  0.8%
  
  [libx264 @ 0x2802ac0] ref B L1: 97.9%  2.1%
  
  [libx264 @ 0x2802ac0] kb/s:74.90

• Concatenate four MP4 video files using FFmpeg

  28 juin 2017, par GTAVLover

  I’m trying to concatenate four MP4 video files using FFmpeg. (latest version) Those four mp4 videos differ from general mp4 videos and have specific codecs, I play them in Windows Media Player with the help of K-Lite Mega Codec Pack 13.1.0.

  Codec information of one file (all four files have same codecs) by MediaInfo :

  General

  Complete name               : Testing - 1.mp4
  
  Format                      : MPEG-4
  
  Format profile              : Base Media
  
  Codec ID                    : isom (mp41/avc1)
  
  File size                   : 59.4 MiB
  
  Duration                    : 3 min 47 s
  
  Overall bit rate mode       : Variable
  
  Overall bit rate            : 2 196 kb/s
  
  Writing application         : vlc 2.2.4 stream output
  
  Comment                     : QuickTime 6.0 or greater

  Video

  ID                          : 2
  
  Format                      : AVC
  
  Format/Info                 : Advanced Video Codec
  
  Format profile              : High@L3
  
  Format settings, CABAC      : Yes
  
  Format settings, ReFrames   : 3 frames
  
  Codec ID                    : avc1
  
  Codec ID/Info               : Advanced Video Coding
  
  Duration                    : 3 min 47 s
  
  Bit rate mode               : Constant
  
  Bit rate                    : 2 000 kb/s
  
  Width                       : 720 pixels
  
  Height                      : 576 pixels
  
  Display aspect ratio        : 5:4
  
  Frame rate mode             : Constant
  
  Frame rate                  : 25.000 FPS
  
  Standard                    : PAL
  
  Color space                 : YUV
  
  Chroma subsampling          : 4:2:0
  
  Bit depth                   : 8 bits
  
  Scan type                   : Progressive
  
  Bits/(Pixel*Frame)          : 0.193
  
  Stream size                 : 54.1 MiB (91%)

  Audio

  ID                          : 1
  
  Format                      : AAC
  
  Format/Info                 : Advanced Audio Codec
  
  Format profile              : LC
  
  Codec ID                    : 40
  
  Duration                    : 3 min 47 s
  
  Source duration             : 3 min 46 s
  
  Bit rate mode               : Variable
  
  Bit rate                    : 192 kb/s
  
  Maximum bit rate            : 294 kb/s
  
  Channel(s)                  : 2 channels
  
  Channel positions           : Front: L R
  
  Sampling rate               : 48.0 kHz
  
  Frame rate                  : 46.875 FPS (1024 spf)
  
  Compression mode            : Lossy
  
  Stream size                 : 5.13 MiB (9%)
  
  Source stream size          : 5.13 MiB (9%)

  MP4 video files to be concatenated are "Testing - 1.mp4", "Testing - 2.mp4", "Testing - 3.mp4" and "Testing - 4.mp4".

  I needed to use FFmpeg’s Concatenation method to join those four MP4 files together into one MP4 file.

  First attempt (using Concat Demuxer) :

  FFmpeg -f concat -safe 0 -i "F:\New Text Document.txt" -c copy E:\Testing.mp4

  File concatenated into one MP4 file with several errors and warnings from FFmpeg.

  Non-monotonous DTS in output stream

  SPS NALU is missing or invalid, The resulting stream may not play

  When playing above concatenated file with Windows Media Player, it gives error

  Network is too busy to play file at original quality

  but the file actually in a local hard drive.

  Seek option not working (even in VLC media player) and Windows Explorer showing incorrect duration like 3h 54min, it should be 15min 05s.

  Second attempt (using Concat Demuxer) :

  FFmpeg -f concat -safe 0 -i "F:\New Text Document.txt" -vcodec copy -acodec copy -crf 0 E:\Testing.mp4

  Then file concatenates successfully and plays without any errors in Windows Media Player and VLC media player. The only problem here is file is very big and about 1.2GB in size because Constant Rate Factor is set to 0 to stop WMP network related error.

  Note : Before concatenating (four source files) are playing fine in both players without any errors, but they are medium in size also. As MediaInfo shows, "Testing - 1.mp4" is 59.4 MB, instead huge sizes.

  When I join those using EasiestSoft Video/Audio Joiner 4.7, file produces no errors while playing (I mean everything works fine as expect, but I need a command line tool like FFmpeg to batch process multiple videos), but in version 5.0, it seems to produce this network related error (this may be a program bug, I think it re-encodes even I check don’t re-encode checkbox).

  What can I do with FFmpeg to make this concatenated MP4 file smaller (around total size of four source files) and to make this able to play in both players without any network related issues or incorrect duration issues.