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• failed to converted raw H264 to mp4 wiht FFMPEG and playback it

  27 décembre 2015, par Efimk

  I am trying to convert raw video file captured from Cisco EX60 to valid MP4 file.
  I use the following command
  ffmpeg -f rawvideo -pix_fmt yuv420p -s:v 1920x1080 -r 25 -i input2 -vcodec libx264 output2.mp4

  and get

  libpostproc    54.  0.100 / 54.  0.100
  
  [rawvideo @ 0000000000703920] Estimating duration from bitrate, this may be inac
  
  curate
  
  Input #0, rawvideo, from 'input2':
  
    Duration: 00:00:00.20, start: 0.000000, bitrate: 630883 kb/s
  
      Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1920x1080, 622080
  
   kb/s, 25 tbr, 25 tbn, 25 tbc
  
  
  
  File 'output2.mp4' already exists. Overwrite ? [y/N] y
  
  [libx264 @ 00000000007115e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 00000000007115e0] profile High, level 4.0
  
  [libx264 @ 00000000007115e0] 264 - core 148 r2638 7599210 - H.264/MPEG-4 AVC cod
  
  ec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 r
  
  ef=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_pski
  
  p=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 deci
  
  mate=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=2
  
  5 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.6
  
  0 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'output2.mp4':
  
    Metadata:
  
      encoder         : Lavf57.18.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1920x1
  
  080, q=-1--1, 25 fps, 12800 tbn, 25 tbc
  
      Metadata:
  
        encoder         : Lavc57.15.100 libx264
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  [rawvideo @ 00000000007101c0] ****Invalid buffer size, packet size 220075 < expected
  
   frame_size 3110400
  
  Error while decoding stream #0:0: Invalid argument****
  
  frame=    5 fps=2.5 q=-1.0 Lsize=    6514kB time=00:00:00.12 bitrate=444706.9kbi
  
  ts/s
  
  video:6513kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
  
  overhead: 0.013209%
  
  [libx264 @ 00000000007115e0] frame I:1     Avg QP:35.99  size:1334571
  
  [libx264 @ 00000000007115e0] frame P:4     Avg QP:35.00  size:1333616
  
  [libx264 @ 00000000007115e0] mb I  I16..4:  0.0%  0.0% 100.0%
  
  [libx264 @ 00000000007115e0] mb P  I16..4: 98.7%  0.0%  1.3%  P16..4:  0.0%  0.0
  
  %  0.0%  0.0%  0.0%    skip: 0.0%

  with

  Invalid buffer size, packet size 220075 < expected
  
       frame_size 3110400
  
      Error while decoding stream #0:0: Invalid argument**

  inside

  When I use just
  ffmpeg -f h264 -i input -vcodec copy -r 25 outfile.mp4
  It replace initial IFrame with B-frames so I cannot playback it. I can view it with VCL, but not with Windows Media player, for example.
  What is wrong with the command ?
  Thanks
  Efim

• Automation for Downloading, Encoding, Renaming and Uploading [on hold]

  5 février 2019, par Madara Uchiha

  How do I automate - downloading anime episodes from Torrent > Encode the videos with ffmpeg or gui > rename (with encoder tag) > upload to Google drive ?
  Should work 24/7. Need help !

• Why doesn't the ffmpeg output display the stream in the browser ? [closed]

  10 mai 2024, par Tebyy

  Why is it that when I create a livestream in Python using ffmpeg, and then I open the browser and visit the page, the page keeps loading continuously, and in PyCharm logs, I see binary data ? There are no errors displayed, and the code seems correct to me. I even tried saving to a file for testing purposes, and when I play the video, everything works fine. Does anyone know what might be wrong here ?

  


  Code :

  


  def generate_frames():
    cap = cv2.VideoCapture(os.path.normpath(app_root_dir().joinpath("data/temp", "video-979257305707693982.mp4")))
    while cap.isOpened():
        ret, frame = cap.read()
        if not ret:
            break

        yield frame


@app.route('/video_feed')
def video_feed():
    ffmpeg_command = [
        'ffmpeg', '-f', 'rawvideo', '-pix_fmt', 'bgr24',
        '-s:v', '1920x1080', '-r', '60',
        '-i', '-', '-vf', 'setpts=2.5*PTS', # Video Speed
        '-c:v', 'libvpx-vp9', '-g', '60', '-keyint_min', '60',
        '-b:v', '6M', '-minrate', '4M', '-maxrate', '12M', '-bufsize', '8M',
        '-crf', '0', '-deadline', 'realtime', '-tune', 'psnr', '-quality', 'good',
        '-tile-columns', '6', '-threads', '8', '-lag-in-frames', '16',
        '-f', 'webm', '-'
    ]
    ffmpeg_process = subprocess.Popen(ffmpeg_command, stdin=subprocess.PIPE, stderr=subprocess.PIPE, bufsize=-1)
    frames_generator = generate_frames()
    for frame in frames_generator:
        ffmpeg_process.stdin.write(frame)
        ffmpeg_process.stdin.flush()

    ffmpeg_process.stdin.close()
    ffmpeg_process.wait()

    def generate_video_stream(process):
        startTime = time.time()
        buffer = []
        sentBurst = False
        for chunk in iter(lambda: process.stderr.read(4096), b''):
            buffer.append(chunk)

            # Minimum buffer time, 3 seconds
            if sentBurst is False and time.time() > startTime + 3 and len(buffer) > 0:
                sentBurst = True
                for i in range(0, len(buffer) - 2):
                    print("Send initial burst #", i)
                    yield buffer.pop(0)

            elif time.time() > startTime + 3 and len(buffer) > 0:
                yield buffer.pop(0)

            process.poll()
            if isinstance(process.returncode, int):
                if process.returncode > 0:
                    print('FFmpeg Error', process.returncode)

                break

    return Response(stream_with_context(generate_video_stream(ffmpeg_process)), mimetype='video/webm', content_type="video/webm; codecs=vp9", headers=Headers([("Connection", "close")]))