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  • Other interesting software

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    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
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    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
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Sur d’autres sites (7723)

  • Speed up start of a stream recording with ffmpeg

    15 janvier 2014, par neutron

    I try to record a video stream (from the web or a local webcam stream) and save it to a .mp4 / .flv file. I use FFmpeg with the version"N-59696-gc0a33c4".

    The problem isn't the recording of the stream, it is, how log it tooks to start the recording.

    This are the parameters i used to capture the stream (the stream is some random stream I found on the web) :

    ffmpeg.exe -i mmsh://live.camstreams.com/cscamscape?MSWMExt=.asf -r 25 -t 60 C:\temp\video.mp4

    And leads to this output :

    ffmpeg.exe -i mmsh://live.camstreams.com/cscams
    
cape?MSWMExt=.asf -r 25 -t 60 C:\temp\video.mp4
    
ffmpeg version N-59696-gc0a33c4 Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Jan  8 2014 22:01:50 with gcc 4.8.2 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
    
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
    
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
    
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
    
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
    
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
    
eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa
    
cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp
    
ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
    
  libavutil      52. 62.100 / 52. 62.100
    
  libavcodec     55. 47.100 / 55. 47.100
    
  libavformat    55. 22.102 / 55. 22.102
    
  libavdevice    55.  5.102 / 55.  5.102
    
  libavfilter     4.  0.103 /  4.  0.103
    
  libswscale      2.  5.101 /  2.  5.101
    
  libswresample   0. 17.104 /  0. 17.104
    
  libpostproc    52.  3.100 / 52.  3.100
    
[wmv3 @ 0275db40] Extra data: 8 bits left, value: 0
    
Input #0, asf, from 'mmsh://live.camstreams.com/cscamscape?MSWMExt=.asf':
    
  Metadata:
    
    title           : Live Fish Cam
    
    WMFSDKNeeded    : 0.0.0.0000
    
    DeviceConformanceTemplate: SP
    
    WMFSDKVersion   : 11.0.5721.5275
    
    IsVBR           : 0
    
  Duration: N/A, start: 3887858.274000, bitrate: 512 kb/s
    
    Stream #0:0(eng): Video: wmv3 (Simple) (WMV3 / 0x33564D57), yuv420p, 640x360
    
, 512 kb/s, 62.50 tbr, 1k tbn, 1k tbc
    
[libx264 @ 0275e400] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 0275e400] profile High, level 3.0
    
[libx264 @ 0275e400] 264 - core 140 r2377 1ca7bb9 - H.264/MPEG-4 AVC codec - Cop
    
yleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deb
    
lock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 m
    
e_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chro
    
ma_qp_offset=-2 threads=12 lookahead_threads=2 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 scene
    
cut=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
    
[wmv3 @ 0275db40] Extra data: 8 bits left, value: 0
    
Output #0, mp4, to 'C:\temp\video.mp4':
    
  Metadata:
    
    title           : Live Fish Cam
    
    WMFSDKNeeded    : 0.0.0.0000
    
    DeviceConformanceTemplate: SP
    
    WMFSDKVersion   : 11.0.5721.5275
    
    IsVBR           : 0
    
    encoder         : Lavf55.22.102
    
    Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 6
    
40x360, q=-1--1, 12800 tbn, 25 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (wmv3 -> libx264)
    
Press [q] to stop, [?] for help
    
frame=  148 fps=0.0 q=28.0 size=     228kB time=00:00:03.60 bitrate= 518.3kbits/
    
frame=  151 fps=117 q=28.0 size=     236kB time=00:00:03.72 bitrate= 519.2kbits/
    
frame=  178 fps= 91 q=28.0 size=     298kB time=00:00:04.80 bitrate= 508.3kbits/
    
frame=  204 fps= 64 q=28.0 size=     347kB time=00:00:05.84 bitrate= 487.4kbits/
    
... 
    
... And so on ...

    The problem now is, that it takes around 6-10 seconds until the recording starts after I entered the command.

    Is there a way to speed up this process ?

  • Speed up start of a stream recording with ffmpeg

    12 mai 2021, par neutron

    I try to record a video stream (from the web or a local webcam stream) and save it to a .mp4 / .flv file. I use FFmpeg with the version"N-59696-gc0a33c4".

    



    The problem isn't the recording of the stream, it is, how log it tooks to start the recording.

    



    This are the parameters i used to capture the stream (the stream is some random stream I found on the web) :

    



    ffmpeg.exe -i mmsh://live.camstreams.com/cscamscape?MSWMExt=.asf -r 25 -t 60 C:\temp\video.mp4


    



    And leads to this output :

    



    ffmpeg.exe -i mmsh://live.camstreams.com/cscams
cape?MSWMExt=.asf -r 25 -t 60 C:\temp\video.mp4
ffmpeg version N-59696-gc0a33c4 Copyright (c) 2000-2014 the FFmpeg developers
  built on Jan  8 2014 22:01:50 with gcc 4.8.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa
cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp
ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  libavutil      52. 62.100 / 52. 62.100
  libavcodec     55. 47.100 / 55. 47.100
  libavformat    55. 22.102 / 55. 22.102
  libavdevice    55.  5.102 / 55.  5.102
  libavfilter     4.  0.103 /  4.  0.103
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
[wmv3 @ 0275db40] Extra data: 8 bits left, value: 0
Input #0, asf, from 'mmsh://live.camstreams.com/cscamscape?MSWMExt=.asf':
  Metadata:
    title           : Live Fish Cam
    WMFSDKNeeded    : 0.0.0.0000
    DeviceConformanceTemplate: SP
    WMFSDKVersion   : 11.0.5721.5275
    IsVBR           : 0
  Duration: N/A, start: 3887858.274000, bitrate: 512 kb/s
    Stream #0:0(eng): Video: wmv3 (Simple) (WMV3 / 0x33564D57), yuv420p, 640x360
, 512 kb/s, 62.50 tbr, 1k tbn, 1k tbc
[libx264 @ 0275e400] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0275e400] profile High, level 3.0
[libx264 @ 0275e400] 264 - core 140 r2377 1ca7bb9 - H.264/MPEG-4 AVC codec - Cop
yleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deb
lock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 m
e_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chro
ma_qp_offset=-2 threads=12 lookahead_threads=2 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 scene
cut=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
[wmv3 @ 0275db40] Extra data: 8 bits left, value: 0
Output #0, mp4, to 'C:\temp\video.mp4':
  Metadata:
    title           : Live Fish Cam
    WMFSDKNeeded    : 0.0.0.0000
    DeviceConformanceTemplate: SP
    WMFSDKVersion   : 11.0.5721.5275
    IsVBR           : 0
    encoder         : Lavf55.22.102
    Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 6
40x360, q=-1--1, 12800 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (wmv3 -> libx264)
Press [q] to stop, [?] for help
frame=  148 fps=0.0 q=28.0 size=     228kB time=00:00:03.60 bitrate= 518.3kbits/
frame=  151 fps=117 q=28.0 size=     236kB time=00:00:03.72 bitrate= 519.2kbits/
frame=  178 fps= 91 q=28.0 size=     298kB time=00:00:04.80 bitrate= 508.3kbits/
frame=  204 fps= 64 q=28.0 size=     347kB time=00:00:05.84 bitrate= 487.4kbits/
... 
... And so on ...


    



    The problem now is, that it takes around 6-10 seconds until the recording starts after I entered the command.

    



    Is there a way to speed up this process ?

    


  • Popen.write - operation on closed file | images to video using FFmpeg

    10 juin 2014, par f.rodrigues

    I’m trying to create a video file from images from my webcam(using SimpleCV), the images are converted to PIL format and then tostring() [rawformat]

    I’m using python subprocess and Popen to create the video using the FFmpeg.

    I can pipe the one image to the FFmpeg and make a video out of it
    But when I try to do a bunch of them I get a error :

    ValueError: I/O operation on closed file

    here’s my code.

    import subprocess as sp
    
from SimpleCV import *
    
from Image import Image
    

    
FFMPEG_BIN = "ffmpeg.exe"
    

    
img = Camera().getImage().toRGB()
    

    

    
command = [FFMPEG_BIN, '-y',  # (optional) overwrite output file if it exists
    
           '-f', 'rawvideo', '-vcodec', 'rawvideo', '-s', '%sx%s'%(img.width,img.height),  # size of one frame
    
           '-pix_fmt', 'rgb24', '-r', '24',  # frames per second
    
           '-i', '-',  # The imput comes from a pipe
    
           '-an',  # Tells FFMPEG not to expect any audio
    
           '-vcodec', 'libx264rgb',
    
           'my_output_videofile.mp4']
    

    

    
pipe = sp.Popen(command, stdin=sp.PIPE)#, stderr=sp.PIPE)
    

    

    
for n in xrange(10):
    
    img = Camera().getImage().toRGB().getPIL().tostring()
    
    pipe.stdin.write(img)
    

    

    
pipe.terminate()

    It’s wierd because the pipe.terminate() is in the end of the code, and it should close the file right away.

    EDIT :
    Removed the stderr

      ffmpeg version N-63208-gbe1fbc0 Copyright (c) 2000-2014 the FFmpeg developers
    
  built on May 17 2014 01:30:26 with gcc 4.8.2 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib 
    
  --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray 
    
  --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug 
    
  --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus 
    
  --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame 
    
  --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx 
    
  --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid 
    
  --enable-decklink --enable-zlib
    
  libavutil      52. 83.100 / 52. 83.100
    
  libavcodec     55. 62.100 / 55. 62.100
    
  libavformat    55. 38.100 / 55. 38.100
    
  libavdevice    55. 13.101 / 55. 13.101
    
  libavfilter     4.  5.100 /  4.  5.100
    
  libswscale      2.  6.100 /  2.  6.100
    
  libswresample   0. 19.100 /  0. 19.100
    
  libpostproc    52.  3.100 / 52.  3.100
    
Input #0, rawvideo, from 'pipe:':
    
  Duration: N/A, start: 0.000000, bitrate: 44236 kb/s
    
    Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 320x240, 44236 kb/s, 24 tbr, 24 tbn, 24 tbc
    
No pixel format specified, rgb24 for H.264 encoding chosen.
    
Use -pix_fmt yuv420p for compatibility with outdated media players.
    
[libx264rgb @ 0000000000359de0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    
[libx264rgb @ 0000000000359de0] profile High 4:4:4 Predictive, level 1.3, 4:4:4 8-bit
    
[libx264rgb @ 0000000000359de0] 264 - core 142 r2431 ac76440 - 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=6 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=24 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 'my_output_videofile.mp4':
    
  Metadata:
    
    encoder         : Lavf55.38.100
    
    Stream #0:0: Video: h264 (libx264rgb) ([33][0][0][0] / 0x0021), rgb24, 320x240, q=-1--1, 12288 tbn, 24 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (rawvideo -> libx264rgb)
    
frame=    7 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A

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