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    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • Supporting all media types

    13 avril 2011, par

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  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
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Sur d’autres sites (6846)

  • Program hangs while using ffprobe on file with teletext subtitles

    6 août 2012, par Jon

    Having a problem running ffprobe on an MKV file that contains teletext subtitles. Code is in a C# library and works fine for other MKV files.

    Running the latest :

    ffprobe -v
    

    
ffprobe version N-42347-g299387e Copyright (c) 2007-2012 the FFmpeg developers
    
  built on Jul  8 2012 15:44:54 with gcc 4.7.1

    Code :

    string args = string.Format("-show_format -show_streams \"{0}\"", FileName);
    

    
Process p = new Process();
    
p.StartInfo = new ProcessStartInfo(FFPROBE_PATH);
    
p.StartInfo.Arguments = args;
    
p.StartInfo.CreateNoWindow = true;
    
p.StartInfo.RedirectStandardOutput = true;
    
p.StartInfo.RedirectStandardError = true;
    
p.StartInfo.UseShellExecute = false;
    
p.StartInfo.WorkingDirectory = System.IO.Directory.GetCurrentDirectory();
    
p.Start();
    

    
while (!p.HasExited)
    
{
    
    System.Threading.Thread.Sleep(100);
    
}
    

    
string output = p.StandardOutput.ReadToEnd().Replace("\r\n", "\n");

    The filename has a UNC path - tried using the FileName parameter but got an error, hence passing the filename via the arguments.

    If I run the following commandline :

    ffprobe -show_format -show_streams "\192.168.10.1\content\Breakfast At Tiffany's sample preview.mkv"

    I get the following output (note the errors - "Unsupported codec with id ...") :

    ffprobe -show_format -show_streams "\\192.168.10.1\content\Breakfast At Tiffany's sample preview.mkv"
    

    
ffprobe version N-42347-g299387e Copyright (c) 2007-2012 the FFmpeg developers
    
  built on Jul  8 2012 15:44:54 with gcc 4.7.1
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-fr
    
ei0r --enable-libass --enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-li
    
bmp3lame --enable-libnut --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libutv
    
ideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --e
    
nable-zlib
    
  libavutil      51. 64.100 / 51. 64.100
    
  libavcodec     54. 33.100 / 54. 33.100
    
  libavformat    54. 15.102 / 54. 15.102
    
  libavdevice    54.  1.100 / 54.  1.100
    
  libavfilter     3.  1.100 /  3.  1.100
    
  libswscale      2.  1.100 /  2.  1.100
    
  libswresample   0. 15.100 /  0. 15.100
    
  libpostproc    52.  0.100 / 52.  0.100
    
Input #0, matroska,webm, from 'c:\dev\content\Breakfast At Tiffany's sample preview.mkv':
    
  Metadata:
    
    creation_time   : 2011-12-14 21:27:01
    
  Duration: 00:01:02.77, start: 0.000000, bitrate: 4071 kb/s
    
    Stream #0:0: Video: h264 (High), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    
    Metadata:
    
      title           : x264   1920x1080   Bitrate=4776 kbps   AvQuant=21.406   Rip by ShivaShanti
    
    Stream #0:1(eng): Audio: ac3, 48000 Hz, 5.1(side), s16, 448 kb/s (default)
    
    Metadata:
    
      title           : English Ac3 5.1 chnls 448 kbps
    
    Stream #0:2(ita): Audio: ac3, 48000 Hz, stereo, s16, 224 kb/s
    
    Metadata:
    
      title           : Italian Ac3 2.0 chnls 224  kbps
    
    Stream #0:3(eng): Subtitle: text (default)
    
    Metadata:
    
      title           : english
    
    Stream #0:4(ita): Subtitle: text
    
    Metadata:
    
      title           : italian
    
    Stream #0:5(dan): Subtitle: text
    
    Metadata:
    
      title           : danish
    
    Stream #0:6(dut): Subtitle: text
    
    Metadata:
    
      title           : dutch
    
    Stream #0:7(fin): Subtitle: text
    
    Metadata:
    
      title           : finnish
    
    Stream #0:8(fre): Subtitle: text
    
    Metadata:
    
      title           : french
    
    Stream #0:9(ger): Subtitle: text
    
    Metadata:
    
      title           : german
    
    Stream #0:10(nor): Subtitle: text
    
    Metadata:
    
      title           : norwegian
    
    Stream #0:11(spa): Subtitle: text
    
    Metadata:
    
      title           : spanish
    
    Stream #0:12(swe): Subtitle: text
    
    Metadata:
    
      title           : swedish
    
    Stream #0:13(eng): Subtitle: text
    
    Metadata:
    
      title           : english hearig impaired
    
Unsupported codec with id 94210 for input stream 3
    
Unsupported codec with id 94210 for input stream 4
    
Unsupported codec with id 94210 for input stream 5
    
Unsupported codec with id 94210 for input stream 6
    
Unsupported codec with id 94210 for input stream 7
    
Unsupported codec with id 94210 for input stream 8
    
Unsupported codec with id 94210 for input stream 9
    
Unsupported codec with id 94210 for input stream 10
    
Unsupported codec with id 94210 for input stream 11
    
Unsupported codec with id 94210 for input stream 12
    
Unsupported codec with id 94210 for input stream 13
    
[STREAM]
    
index=0
    
codec_name=h264
    
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
    
profile=High
    
codec_type=video
    
codec_time_base=1001/48000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
width=1920
    
height=1080
    
has_b_frames=2
    
sample_aspect_ratio=1:1
    
display_aspect_ratio=16:9
    
pix_fmt=yuv420p
    
level=41
    
timecode=N/A
    
is_avc=1
    
nal_length_size=4
    
id=N/A
    
r_frame_rate=24000/1001
    
avg_frame_rate=24000/1001
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:title=x264   1920x1080   Bitrate=4776 kbps   AvQuant=21.406   Rip by ShivaShanti
    
[/STREAM]
    
[STREAM]
    
index=1
    
codec_name=ac3
    
codec_long_name=ATSC A/52A (AC-3)
    
profile=unknown
    
codec_type=audio
    
codec_time_base=1/48000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
sample_fmt=s16
    
sample_rate=48000
    
channels=6
    
bits_per_sample=0
    
dmix_mode=-1
    
ltrt_cmixlev=-1.000000
    
ltrt_surmixlev=-1.000000
    
loro_cmixlev=-1.000000
    
loro_surmixlev=-1.000000
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=448000
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:language=eng
    
TAG:title=English Ac3 5.1 chnls 448 kbps
    
[/STREAM]
    
[STREAM]
    
index=2
    
codec_name=ac3
    
codec_long_name=ATSC A/52A (AC-3)
    
profile=unknown
    
codec_type=audio
    
codec_time_base=1/48000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
sample_fmt=s16
    
sample_rate=48000
    
channels=2
    
bits_per_sample=0
    
dmix_mode=-1
    
ltrt_cmixlev=-1.000000
    
ltrt_surmixlev=-1.000000
    
loro_cmixlev=-1.000000
    
loro_surmixlev=-1.000000
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=224000
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:language=ita
    
TAG:title=Italian Ac3 2.0 chnls 224  kbps
    
[/STREAM]
    
[STREAM]
    
index=3
    
codec_name=unknown
    
codec_long_name=unknown
    
profile=unknown
    
codec_type=subtitle
    
codec_time_base=1/1000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:language=eng
    
TAG:title=english
    
[/STREAM]
    
[STREAM]
    
index=4
    
codec_name=unknown
    
codec_long_name=unknown
    
profile=unknown
    
codec_type=subtitle
    
codec_time_base=1/1000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:language=ita
    
TAG:title=italian
    
[/STREAM]
    
[STREAM]
    
index=5
    
codec_name=unknown
    
codec_long_name=unknown
    
profile=unknown
    
codec_type=subtitle
    
codec_time_base=1/1000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:language=dan
    
TAG:title=danish
    
[/STREAM]
    
[STREAM]
    
index=6
    
codec_name=unknown
    
codec_long_name=unknown
    
profile=unknown
    
codec_type=subtitle
    
codec_time_base=1/1000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:language=dut
    
TAG:title=dutch
    
[/STREAM]
    
[STREAM]
    
index=7
    
codec_name=unknown
    
codec_long_name=unknown
    
profile=unknown
    
codec_type=subtitle
    
codec_time_base=1/1000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:language=fin
    
TAG:title=finnish
    
[/STREAM]
    
[STREAM]
    
index=8
    
codec_name=unknown
    
codec_long_name=unknown
    
profile=unknown
    
codec_type=subtitle
    
codec_time_base=1/1000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:language=fre
    
TAG:title=french
    
[/STREAM]
    
[STREAM]
    
index=9
    
codec_name=unknown
    
codec_long_name=unknown
    
profile=unknown
    
codec_type=subtitle
    
codec_time_base=1/1000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:language=ger
    
TAG:title=german
    
[/STREAM]
    
[STREAM]
    
index=10
    
codec_name=unknown
    
codec_long_name=unknown
    
profile=unknown
    
codec_type=subtitle
    
codec_time_base=1/1000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:language=nor
    
TAG:title=norwegian
    
[/STREAM]
    
[STREAM]
    
index=11
    
codec_name=unknown
    
codec_long_name=unknown
    
profile=unknown
    
codec_type=subtitle
    
codec_time_base=1/1000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:language=spa
    
TAG:title=spanish
    
[/STREAM]
    
[STREAM]
    
index=12
    
codec_name=unknown
    
codec_long_name=unknown
    
profile=unknown
    
codec_type=subtitle
    
codec_time_base=1/1000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:language=swe
    
TAG:title=swedish
    
[/STREAM]
    
[STREAM]
    
index=13
    
codec_name=unknown
    
codec_long_name=unknown
    
profile=unknown
    
codec_type=subtitle
    
codec_time_base=1/1000
    
codec_tag_string=[0][0][0][0]
    
codec_tag=0x0000
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/1000
    
start_time=0.000000
    
duration=N/A
    
bit_rate=N/A
    
nb_frames=N/A
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
TAG:language=eng
    
TAG:title=english hearig impaired
    
[/STREAM]
    
[FORMAT]
    
filename=c:\dev\content\Breakfast At Tiffany's sample preview.mkv
    
nb_streams=14
    
format_name=matroska,webm
    
format_long_name=Matroska/WebM file format
    
start_time=0.000000
    
duration=62.776000
    
size=31947628
    
bit_rate=4071317
    
TAG:creation_time=2011-12-14 21:27:01
    
[/FORMAT]

    My problem is, the process appears to hang. I took out the 'CreateNoWindow' option and, of course, I get a big blank window onscreen that normally just flashs by on a normal file. With the teletext subtitle file however, it persists. If I manually close it, the program continues and I seem to get the output I want.

    So my question is, how can I debug this further, to find out why this is hanging and how to handle the error (or simply ignore it) and continue ?

  • ffmpeg : Pipe input error

    1er septembre 2012, par Amit Khanna

    I'm facing an issue while working with ffmpeg when input and output are pipes. Though Output pipe is working fine, piping the input is causing some error.

    I tried to convert mp4 video to flv using the following command and it worked fine :

    $ ffmpeg  -i video-2012-04-26-19-48-40.mp4 -ar 44100 -ab 96 -f flv pipe:1 | cat> videoname.flv

    It worked fine and gave the following output :

    FFmpeg version 0.6-4:0.6-2ubuntu6.3, Copyright (c) 2000-2010 the FFmpeg developers
    
  built on Dec 21 2011 18:37:43 with gcc 4.4.5
    
  configuration: --extra-version=4:0.6-2ubuntu6.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
    
  WARNING: library configuration mismatch
    
  libavutil   configuration: --extra-version=4:0.6-2ubuntu3.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-libmp3lame --enable-gpl --enable-postproc --enable-x11grab --enable-libfaad --enable-libxvid --enable-libx264 --enable-librtmp --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavcodec  configuration: --extra-version=4:0.6-2ubuntu3.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-libmp3lame --enable-gpl --enable-postproc --enable-x11grab --enable-libfaad --enable-libxvid --enable-libx264 --enable-librtmp --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavformat configuration: --extra-version=4:0.6-2ubuntu6.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavdevice configuration: --extra-version=4:0.6-2ubuntu6.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavfilter configuration: --extra-version=4:0.6-2ubuntu6.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libswscale  configuration: --extra-version=4:0.6-2ubuntu6.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libpostproc configuration: --extra-version=4:0.6-2ubuntu6.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  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
    
  libavfilter    1.19. 0 /  1.19. 0
    
  libswscale     0.11. 0 /  0.11. 0
    
  libpostproc   51. 2. 0 / 51. 2. 0
    

    
Seems stream 0 codec frame rate differs from container frame rate: 60000.00 (60000/1) -> 1000.00 (1000/1)
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video-2012-04-26-19-48-40.mp4':
    
  Metadata:
    
    major_brand     : 3gp4
    
    minor_version   : 768
    
    compatible_brands: 3gp43gp6
    
  Duration: 00:00:09.55, start: 0.000000, bitrate: 3366 kb/s
    
    Stream #0.0(eng): Video: h264, yuv420p, 720x480, 3304 kb/s, 29.61 fps, 1k tbr, 30k tbn, 60k tbc
    
    Stream #0.1(eng): Audio: aac, 16000 Hz, mono, s16, 56 kb/s
    
WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s
    
Output #0, flv, to 'pipe:1':
    
  Metadata:
    
    encoder         : Lavf52.64.2
    
    Stream #0.0(eng): Video: flv, yuv420p, 720x480, q=2-31, 200 kb/s, 1k tbn, 1k tbc
    
    Stream #0.1(eng): Audio: adpcm_swf, 44100 Hz, mono, s16, 0 kb/s
    
Stream mapping:
    
  Stream #0.0 -> #0.0
    
  Stream #0.1 -> #0.1
    
Press [q] to stop encoding
    
frame=  283 fps=175 q=31.0 Lsize=     924kB time=9.52 bitrate= 794.7kbits/s    
    
video:709kB audio:207kB global headers:0kB muxing overhead 0.867656%

    But when I read the input also from pipe, I get an error :

    Command :

    $cat video-2012-04-26-19-48-40.mp4| ffmpeg -i pipe: -ar 44100 -ab 96 -f flv pipe:1 | cat> videoname.flv

    Error output :

    FFmpeg version 0.6-4:0.6-2ubuntu6.3, Copyright (c) 2000-2010 the FFmpeg developers
    
  built on Dec 21 2011 18:37:43 with gcc 4.4.5
    
  configuration: --extra-version=4:0.6-2ubuntu6.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
    
  WARNING: library configuration mismatch
    
  libavutil   configuration: --extra-version=4:0.6-2ubuntu3.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-libmp3lame --enable-gpl --enable-postproc --enable-x11grab --enable-libfaad --enable-libxvid --enable-libx264 --enable-librtmp --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavcodec  configuration: --extra-version=4:0.6-2ubuntu3.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-libmp3lame --enable-gpl --enable-postproc --enable-x11grab --enable-libfaad --enable-libxvid --enable-libx264 --enable-librtmp --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavformat configuration: --extra-version=4:0.6-2ubuntu6.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavdevice configuration: --extra-version=4:0.6-2ubuntu6.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavfilter configuration: --extra-version=4:0.6-2ubuntu6.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libswscale  configuration: --extra-version=4:0.6-2ubuntu6.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libpostproc configuration: --extra-version=4:0.6-2ubuntu6.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-vaapi --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  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
    
  libavfilter    1.19. 0 /  1.19. 0
    
  libswscale     0.11. 0 /  0.11. 0
    
  libpostproc   51. 2. 0 / 51. 2. 0
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x8962bc0]stream 0, offset 0x28: partial file
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x8962bc0]Could not find codec parameters (Video: h264, 3304 kb/s)
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x8962bc0]Could not find codec parameters (Audio: aac, mono, s16, 56 kb/s)
    
pipe:: could not find codec parameters

    Please help me fix the error.

  • MPEG DASH : frame seeking

    13 août 2014, par bisc8

    TL ;DR : Is it possible to achieve frame seeking using DASH ? How ?

    I’m using ffmpeg to create non-multiplexed content :

    ffmpeg -y -an -codec:v libx264 -profile:v baseline output_video.mp4 -i video.mp4
    
ffmpeg -y -vn -codec:a libvo_aacenc -ac 1 -ar 44100 output_audio.mp4 -i video.mp4

    Then I’m using mp4box to create DASH content :

    mp4box -dash 10000 -frag 1000 -rap -dash-profile live -segment-name mp4-live-$RepresentationID$-$Number$ -out manifest.mpd output_video.mp4 output_audio.mp4

    Finally I open the generated content with Chrome, using dash.js. Everything works fine except that I can’t do frame seek. I keep on adding (1/frame_rate) seconds to the current time but nothing happens, the frame only changes after 10 seconds.

    I suppose this has to do with the video’s key interval. However, I am able to do frame seek after the ffmpeg part, so I guess I’m missing something in the mp4box command.

    Is it possible to achieve frame seeking using DASH or am I missing something ?

    Thanks in advance.

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