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Autres articles (19)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

Sur d’autres sites (5566)

  • What is wrong with the following ffmpeg command

    9 juin 2017, par Brad

    What is wrong with the following ffmpeg command ? Originally this had -sameq instead of the -qscale:a 0

    Command :

    ffmpeg -loglevel debug -threads 4 -i sample-in.mpg -ss 00:00:01 -t 00:00:05 -f image2 -y sample-frames/frame%d.png -acodec copy -qscale:a 0  -y sample.mp3

    Output

    ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Jul  9 2013 04:36:42 with Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=cc --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-ffplay
    
  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
    

    
Splitting the commandline.
    
Reading option '-loglevel' ... matched as option 'loglevel' (set libav* logging level) with argument 'debug'.
    
Reading option '-threads' ... matched as AVOption 'threads' with argument '4'.
    
Reading option '-i' ... matched as input file with argument 'sample-in.mpg'.
    
Reading option '-ss' ... matched as option 'ss' (set the start time offset) with argument '00:00:01'.
    
Reading option '-t' ... matched as option 't' (record or transcode "duration" seconds of audio/video) with argument '00:00:05'.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'image2'.
    
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
    
Reading option 'sample-frames/frame%d.png' ... matched as output file.
    
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'copy'.
    
Reading option '-qscale:a' ... matched as option 'qscale' (use fixed quality scale (VBR)) with argument '0'.
    
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
    
Reading option 'sample.mp3' ... matched as output file.
    
Finished splitting the commandline.
    
Parsing a group of options: global .
    
Applying option loglevel (set libav* logging level) with argument debug.
    
Applying option y (overwrite output files) with argument 1.
    
    Last message repeated 1 times
    
Successfully parsed a group of options.
    
Parsing a group of options: input file sample-in.mpg.
    
Successfully parsed a group of options.
    
Opening an input file: sample-in.mpg.
    
[mpeg @ 0x7ffb4a80f200] Format mpeg probed with size=16384 and score=52
    
[mpeg @ 0x7ffb4a80f200] File position before avformat_find_stream_info() is 0
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2500
    
[mpeg @ 0x7ffb4a80f200] Probe with size=2002, packets=1 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2499
    
[mpeg @ 0x7ffb4a80f200] Probe with size=4043, packets=2 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2498
    
[mpeg @ 0x7ffb4a80f200] Probe with size=6084, packets=3 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2497
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2496
    
[mpeg @ 0x7ffb4a80f200] Probe with size=10166, packets=5 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2495
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2494
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2493
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2492
    
[mpeg @ 0x7ffb4a80f200] Probe with size=18330, packets=9 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2491
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2490
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2489
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2488
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2487
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2486
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2485
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2484
    
[mpeg @ 0x7ffb4a80f200] Probe with size=34658, packets=17 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2483
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2482
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2481
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2480
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2479
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2478
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2477
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2476
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2475
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2474
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2473
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2472
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2471
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2470
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2469
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2468
    
[mpeg @ 0x7ffb4a80f200] Probe with size=67266, packets=33 detected mpegvideo with score=51
    
[mpeg @ 0x7ffb4a80f200] probed stream 0
    
[mpeg @ 0x7ffb4a80f200] first_dts 86997 not matching first dts 93003 in the queue
    
    Last message repeated 3 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 86997 not matching first dts 108018 in the queue
    
    Last message repeated 3 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 111600 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 135360 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 156960 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 180720 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 202320 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 226080 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 247680 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 271440 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 295200 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 316800 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 340560 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 362160 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 385920 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 407520 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 431280 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 452880 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 476640 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 498240 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 522000 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] max_analyze_duration 5000000 reached at 5005000 microseconds
    
[mpeg @ 0x7ffb4a80f200] File position after avformat_find_stream_info() is 0
    
Input #0, mpeg, from 'sample-in.mpg':
    
  Duration: 00:00:05.97, start: 1.000000, bitrate: 6827 kb/s
    
    Stream #0:0[0x1e0], 152, 1/90000: Video: mpeg1video, yuv420p, 704x480 [SAR 200:219 DAR 880:657], 1001/30000, 104857 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 29.97 tbc
    
    Stream #0:1[0x1c0], 211, 1/90000: Audio: mp2, 48000 Hz, stereo, s16p, 64 kb/s
    
Successfully opened the file.
    
Parsing a group of options: output file sample-frames/frame%d.png.
    
Applying option ss (set the start time offset) with argument 00:00:01.
    
Applying option t (record or transcode "duration" seconds of audio/video) with argument 00:00:05.
    
Applying option f (force format) with argument image2.
    
Successfully parsed a group of options.
    
Opening an output file: sample-frames/frame%d.png.
    
Successfully opened the file.
    
Parsing a group of options: output file sample.mp3.
    
Applying option acodec (force audio codec ('copy' to copy stream)) with argument copy.
    
Applying option qscale:a (use fixed quality scale (VBR)) with argument 0.
    
Successfully parsed a group of options.
    
Opening an output file: sample.mp3.
    
Successfully opened the file.
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'video_size' to value '704x480'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'pix_fmt' to value '0'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'time_base' to value '1/90000'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'pixel_aspect' to value '200/219'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'sws_param' to value 'flags=2'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'frame_rate' to value '30000/1001'
    
[graph 0 input from stream 0:0 @ 0x7ffb4a411de0] w:704 h:480 pixfmt:yuv420p tb:1/90000 fr:30000/1001 sar:200/219 sws_param:flags=2
    
[scale @ 0x7ffb4a414800] Setting 'w' to value '0'
    
[scale @ 0x7ffb4a414800] Setting 'h' to value '0'
    
[scale @ 0x7ffb4a414800] Setting 'flags' to value '0x4'
    
[auto-inserted scaler 0 @ 0x7ffb4a414740] w:0 h:0 flags:'0x4' interl:0
    
[format @ 0x7ffb4a42aa20] auto-inserting filter 'auto-inserted scaler 0' between the filter 'Parsed_null_0' and the filter 'format'
    
[auto-inserted scaler 0 @ 0x7ffb4a414740] picking rgb24 out of 7 ref:yuv420p alpha:0
    
[auto-inserted scaler 0 @ 0x7ffb4a414740] w:704 h:480 fmt:yuv420p sar:200/219 -> w:704 h:480 fmt:rgb24 sar:200/219 flags:0x4
    
[png @ 0x7ffb4a831000] detected 4 logical cores
    
[mp3 @ 0x7ffb4a831600] Invalid audio stream. Exactly one MP3 audio stream is required.
    
Output #0, image2, to 'sample-frames/frame%d.png':
    
  Metadata:
    
    encoder         : Lavf54.63.104
    
    Stream #0:0, 0, 1/90000: Video: png, rgb24, 704x480 [SAR 200:219 DAR 880:657], 1001/30000, q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
    
Output #1, mp3, to 'sample.mp3':
    
  Metadata:
    
    encoder         : Lavf54.63.104
    
    Stream #1:0, 0, 1/90000: Audio: mp2, 48000 Hz, stereo, 64 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mpeg1video -> png)
    
  Stream #0:1 -> #1:0 (copy)
    
Could not write header for output file #1 (incorrect codec parameters ?): Invalid argument
    
Statistics: 4542608 bytes read, 2 seeks

    I found the code above from : http://kwlug.org/node/854
    I did a few edits removing the -sameq and replacing it with -qscale:a 0 which probably is wrong.

  • matroskaenc : allow override of "writing application" tag

    3 mars 2014, par John Stebbins
    matroskaenc : allow override of "writing application" tag

    Signed-off-by : Tim Walker <tdskywalker@gmail.com>
    

    CC : libav-stable@libav.org
    • [DBH] libavformat/matroskaenc.c

  • movenc : allow override of "writing application" tag

    3 mars 2014, par John Stebbins
    movenc : allow override of "writing application" tag

    Signed-off-by : Tim Walker <tdskywalker@gmail.com>
    

    CC : libav-stable@libav.org
    • [DBH] libavformat/movenc.c

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