Recherche avancée

Sur d’autres sites (13280)

• Python unknown file extension .mp4

  18 février 2024, par marlise23

  I am working on a simulation project, however I am unable to create a visual. I started out by running code from matplotlib's documentation (i.e. the code does not belong to me).
When I run the code, I get the error "unknown file extension : .mp4". 
I have installed ffmpeg and checked that it is an updated version.

  



  I am using a Windows computer and Python 3.

  



  import numpy as np
from matplotlib import pyplot as plt
from matplotlib import animation
plt.rcParams['animation.ffmpeg_path']='‪C:\\FFmpeg\bin\ffmpeg.exe'

# First set up the figure, the axis, and the plot element we want to animate
fig = plt.figure()
ax = plt.axes(xlim=(0, 2), ylim=(-2, 2))
line, = ax.plot([], [], lw=2)

# initialization function: plot the background of each frame
def init():
    line.set_data([], [])
    return line,

# animation function.  This is called sequentially
def animate(i):
    x = np.linspace(0, 2, 1000)
    y = np.sin(2 * np.pi * (x - 0.01 * i))
    line.set_data(x, y)
    return line,

# call the animator.  blit=True means only re-draw the parts that have changed.
anim = animation.FuncAnimation(fig, animate, init_func=init,
                               frames=200, interval=20, blit=True)

# save the animation as an mp4.  This requires ffmpeg or mencoder to be
# installed.  The extra_args ensure that the x264 codec is used, so that
# the video can be embedded in html5. 
anim.save('basic_animation.mp4', fps=30, extra_args=['-vcodec', 'libx264'])

plt.show()


  


• FFMPEG -filter_complex drawtext with style like bold italic and underline

  6 janvier 2019, par Mubbashar

  I am trying to add text on padded area of my video. There are 4 to 5 things that i am not able to do

  • 1) Draw text styling (bold, italic, underline)
  • 2) Padded area opacity
  • 3) Subtitle vertical alignment. When i give some value to VAlign it
    sometimes goes out of the window. how to calculate correctly like
    50px from top or let say 200px from bottom
  • 4) The subtitle should be full width to video. Right now it is like
    this.
  • 5) Having a hard time providing OutlineColour value. I have RGBA
    value so how i can give it to OutlineColour

  Here is command i am using

  ffmpeg -y -i video-orignal.mp4 -i logo.png -filter_complex "[0] pad=width=iw:height=ih+200:x=0:y=100:color=#f2e6e6@0.99 [v_1];[v_1] drawtext=fontfile='/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf':text='this is watermark': fontsize=24: x=0.23333333333333*main_w: y=0.1325*main_h: fontcolor=#b01e1e: alpha=1,drawtext=fontfile='/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf':text='This is Top fixed text': fontsize=32: x=w-tw-2: y=(100-th)/2: fontcolor=#9e2643: alpha=1,drawtext=fontfile='/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf':text='This is Bottom fixed text': fontsize=32: x=w-tw-2: y=h-50: fontcolor=#9e2643: alpha=1 [v_2];[v_2] subtitles=f=subtitles-final.srt:force_style='FontName=DejaVu Sans Mono,FontSize=26,OutlineColour=&H00f2eded,PrimaryColour=&H000bf282,BorderStyle=3,WrapStyle=3,Bold=1,italic=1,Underline=1,Alignment=3,MarginV=86.4' [v_3];[v_3] [1]overlay=main_w-140:105 [v_4]" -map "[v_4]" -map 0:a video-final.mp4

  Split into lines and indented to make it readable :

  ffmpeg -y
  
  -i video-orignal.mp4
  
  -i logo.png
  
  -filter_complex
  
      "[0] pad=width=iw:height=ih+200:x=0:y=100:color=#f2e6e6@0.99 [v_1];
  
      [v_1]
  
          drawtext=
  
              fontfile='/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf':
  
              text='this is watermark': fontsize=24:
  
              x=0.23333333333333*main_w: y=0.1325*main_h:
  
              fontcolor=#b01e1e: alpha=1,
  
          drawtext=
  
              fontfile='/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf':
  
              text='This is Top fixed text': fontsize=32:
  
              x=w-tw-2: y=(100-th)/2: fontcolor=#9e2643: alpha=1,
  
          drawtext=
  
              fontfile='/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf':
  
              text='This is Bottom fixed text': fontsize=32:
  
              x=w-tw-2: y=h-50: fontcolor=#9e2643: alpha=1
  
      [v_2];
  
      [v_2]
  
          subtitles=
  
              f=subtitles-final.srt:
  
              force_style=
  
                  'FontName=DejaVu Sans Mono,
  
                  FontSize=26,
  
                  OutlineColour=&H00f2eded,
  
                  PrimaryColour=&H000bf282,
  
                  BorderStyle=3,WrapStyle=3,Bold=1,italic=1,Underline=1,
  
                  Alignment=3,MarginV=86.4'
  
      [v_3];
  
      [v_3] [1]overlay=main_w-140:105 [v_4]"
  
  -map "[v_4]"
  
  -map 0:a
  
  video-final.mp4

• Convert images into video

  24 septembre 2017, par Disha Shukla

  I have some images in the folder. I want to convert all images into videos. But the problem is that when the resolution is different it shows the error. I don’t want to stretch the images in the video. I just want to keep image size as it is. But it shows this error.

  My Command :

  ffmpeg -framerate 1/3 -pattern_type glob -i "images/*.jpg" -i trinity.MP3 -shortest -c:v libx264 -r 30 -vf "scale=iw*sar:ih , pad=max(iw\,ih*(16/9)):ow/(16/9):(ow-iw)/2:(oh-ih)/2" -aspect 16:9 -pix_fmt yuv420p out.mp4 -y

  Logs :

  [mjpeg @ 0x6b3820] Changeing bps to 8
  
  Input #0, image2, from 'images/*.jpg':
  
    Duration: 00:00:24.00, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 1:1 DAR 16:9], 0.33 fps, 0.33 tbr, 0.33 tbn, 0.33 tbc
  
  [mp3 @ 0x6b4ca0] Estimating duration from bitrate, this may be inaccurate
  
  Input #1, mp3, from 'trinity.MP3':
  
    Metadata:
  
      encoded_by      : Lavf52.9.0
  
    Duration: 00:09:02.35, start: 0.000000, bitrate: 128 kb/s
  
      Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
  
  [swscaler @ 0x68a3c0] deprecated pixel format used, make sure you did set range correctly
  
  [libx264 @ 0x6bada0] using SAR=1/1
  
  [libx264 @ 0x6bada0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
  
  [libx264 @ 0x6bada0] profile High, level 3.1
  
  [libx264 @ 0x6bada0] 264 - core 142 r2438 af8e768 - 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=3 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 'out.mp4':
  
    Metadata:
  
      encoder         : Lavf56.25.101
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 30 fps, 15360 tbn, 30 tbc
  
      Metadata:
  
        encoder         : Lavc56.26.100 libx264
  
      Stream #0:1: Audio: aac (libfaac) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s
  
      Metadata:
  
        encoder         : Lavc56.26.100 libfaac
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
  
    Stream #1:0 -> #0:1 (mp3 (native) -> aac (libfaac))
  
  Press [q] to stop, [?] for help
  
  Input stream #0:0 frame changed from size:1280x720 fmt:yuvj420p to size:596x913 fmt:yuvj420p
  
  [Parsed_pad_1 @ 0x697940] Input area 512:0:1108:913 not within the padded area 0:0:1622:912 or zero-sized
  
  [Parsed_pad_1 @ 0x697940] Failed to configure input pad on Parsed_pad_1

  Is there any way to keep resolution as it is and make a video of all images ?