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• Trying to encode video file as hevc error in python

  29 juin 2022, par jatt

  I am getting a syntax error when trying to run this code with it saying the end quotes being the error. process = sp.Popen(shlex.split(f'usr/bin/ffmpeg -y -s {width}x{height} -pixel_format bgr24 -f rawvideo -r {fps} -i pipe: -vcodec libx265 -pix_fmt yuv420p -crf 24 {output_filename}') stdin=sp.PIPE)

  


  I don't know why because the end quote is supposed to be there and I am not sure how to fix it.
The original code is from here : How to output x265 compressed video with cv2.VideoWriter

  


  import cv2
import numpy as np
import subprocess as sp
import shlex

width, height, n_frames, fps = 1344, 756, 50, 25  # 50 frames, resolution 1344x756, and 25 fps

output_filename = 'output.mp4'

# Open ffmpeg application as sub-process
# FFmpeg input PIPE: RAW images in BGR color format
# FFmpeg output MP4 file encoded with HEVC codec.
# Arguments list:
# -y                   Overwrite output file without asking
# -s {width}x{height}  Input resolution width x height (1344x756)
# -pixel_format bgr24  Input frame color format is BGR with 8 bits per color component
# -f rawvideo          Input format: raw video
# -r {fps}             Frame rate: fps (25fps)
# -i pipe:             ffmpeg input is a PIPE
# -vcodec libx265      Video codec: H.265 (HEVC)
# -pix_fmt yuv420p     Output video color space YUV420 (saving space compared to YUV444)
# -crf 24              Constant quality encoding (lower value for higher quality and larger output file).
# {output_filename}    Output file name: output_filename (output.mp4)
process = sp.Popen(shlex.split(f'usr/bin/ffmpeg -y -s {width}x{height} -pixel_format bgr24 -f rawvideo -r {fps} -i pipe: -vcodec libx265 -pix_fmt yuv420p -crf 24 {output_filename}') stdin=sp.PIPE)

# Build synthetic video frames and write them to ffmpeg input stream.
for i in range(n_frames):
    # Build synthetic image for testing ("render" a video frame).
    img = np.full((height, width, 3), 60, np.uint8)
    cv2.putText(img, str(i+1), (width//2-100*len(str(i+1)), height//2+100), cv2.FONT_HERSHEY_DUPLEX, 10, (255, 30, 30), 20)  # Blue number

    # Write raw video frame to input stream of ffmpeg sub-process.
    process.stdin.write(img.tobytes())

# Close and flush stdin
process.stdin.close()

# Wait for sub-process to finish
process.wait()

# Terminate the sub-process
process.terminate()


  


• FFMPEG SreenRecorder with Audio does not add DrawText

  19 octobre 2020, par John Henderson

  I am using FFMPEG to record the whole screen using gdigrab as well as recording the microphone audio and virtual-audio-capturer. It has taken a good while, but I got it to work and save as an mkv file. I am using Vb.net to pass the string to FFMPEG. Here is the string.

  


  "/k ffmpeg.exe -y -rtbufsize 1500M -f dshow -i audio=@device_cm_33D9A762-90C8-11D0-BD43-00A0C911CE86\wave_16F2BCE9-4F86-4C29-8B2C-B70508551DC7 -f dshow -i audio=@device_sw_33D9A762-90C8-11D0-BD43-00A0C911CE868E146464-DB61-4309-AFA1-3578E927E935 -f gdigrab -framerate 50 -i desktop -codec:v h264_nvenc -qp 0 -vf drawtext=fontfile=C :\Windows\ARLRDBD.TTF:Text=" & MyProgName & "fontcolor=white:fontsize=24:box=1:shadowcolor=darkblue:shadowx=1:shadowy=1:boxcolor=blue@0.6:boxborderw=5:x=50:y=H-th-50 :-filter_complex [0:a][1:a]amerge=inputs=2[a] -map 2 -map [a] " & str & "\Recordings\ScreenRecorder" & FileTime & ".mkv"

  


  The problem is that it will not draw the text on the screen and I get the following error.

  


      Guessed Channel Layout for Input Stream #0.0 : stereo
    Input #0, dshow, from 'audio=@device_cm_{33D9A762-90C8-11D0-BD43- 
    00A0C911CE86}\wave_{16F2BCE9-4F86-4C29-8B2C-B70508551DC7}':
    Duration: N/A, start: 840168.175000, bitrate: 1411 kb/s
    Stream #0:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
    Guessed Channel Layout for Input Stream #1.0 : stereo
    Input #1, dshow, from 'audio=@device_sw_{33D9A762-90C8-11D0-BD43- 
    00A0C911CE86}\{8E146464-DB61-4309-AFA1-3578E927E935}':
    Duration: N/A, start: 840168.949000, bitrate: 1536 kb/s
    Stream #1:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
    [gdigrab @ 000001b92bad9880] Capturing whole desktop as 
    1366x768x32 at (0,0)
    [gdigrab @ 000001b92bad9880] Stream #0: not enough frames to 
    estimate rate; consider increasing probesize
    Input #2, gdigrab, from 'desktop':
    Duration: N/A, start: 1602928621.299032, bitrate: 1678562 kb/s
    Stream #2:0: Video: bmp, bgra, 1366x768, 1678562 kb/s, 50 fps, 
    1000k tbr, 1000k tbn, 1000k tbc
    [NULL @ 000001b92badb300] Unable to find a suitable output format 
    for '[0:a][1:a]amerge=inputs=2[a]'
    [0:a][1:a]amerge=inputs=2[a]: Invalid argument
    Received stop event after 9 passes


  


  If anyone can see where I am going wrong and point me in the right direction it would be really appreciated.

  


• FFMPEG replace audio with new mp3 audio gives error Unrecognized option 'codec'

  15 février 2016, par Waqleh

  I am trying to replace an audio in a video with another audio like so :

  ffmpeg -i \/home\/test\/public_html\/ted\/videos\/c812e2423b6b5da2f4e00c62bf70d2f3.mp4 -i \/home\/test\/public_html\/ted\/app\/templates\/default\/sounds\/taj-express-30sec.mp3 -codec copy -shortest \/home\/test\/public_html\/ted\/videos\/55e5a21e111af1cc0bdb3637b601f64d_with_audio.mp4
  
  FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers
  
    built on Jan 29 2012 17:52:15 with gcc 4.4.5 20110214 (Red Hat 4.4.5-6)
  
    configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --enable-avfilter --enable-avfilter-lavf --enable-libdc1394 --enable-libdirac --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 --enable-x11grab
  
    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: 20.00 (20/1) -> 10.00 (20/2)
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/test/public_html/ted/videos/c812e2423b6b5da2f4e00c62bf70d2f3.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp41isom
  
    Duration: 00:00:23.44, start: 0.000000, bitrate: 273 kb/s
  
      Stream #0.0(und): Video: h264, yuv420p, 1364x698 [PAR 1:1 DAR 682:349], 268 kb/s, 9.98 fps, 10 tbr, 10k tbn, 20 tbc
  
      Stream #0.1(und): Audio: aac, 44100 Hz, mono, s16, 1 kb/s
  
  [mp3 @ 0x1c648a0]max_analyze_duration reached
  
  Input #1, mp3, from '/home/test/public_html/ted/app/templates/default/sounds/taj-express-30sec.mp3':
  
    Metadata:
  
      comment         : Description
  
      TENC            : BLUE PRODUCTION
  
      originator_reference: CCOOONNNNNNNNNNNNHHMMSSRRRRRRRRR
  
      TDRC            : 2012:05:03
  
      coding_history  : A=PCM,F=44100,W=16,M=stereo,T=Nuendo
  
  
  
      time_reference  : 1601731
  
      umid            : 0x24FF296F2093409DA42CA66529FF7FA800000000000000000000000000000000
  
      TSSE            : Lavf57.23.101
  
    Duration: 00:00:30.04, start: 0.000000, bitrate: 128 kb/s
  
      Stream #1.0: Audio: mp3, 44100 Hz, 2 channels, s16, 128 kb/s
  
  Unrecognized option 'codec'

  but I keep getting Unrecognized option ’codec’

  It work local fine on ubuntu, but on the server centos 6 with WHM cPanel it is not ! why ?