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Sur d’autres sites (10716)

  • FFMPEG Loudnorm reading JSON data

    9 juillet 2022, par NineCattoRules

    I tried to normalize some audio files using FFMPEG Loudnorm as described here.

    


    However, in Python, I don't understand how to read data info from 1st pass.

    


    My code :

    


    getLoud =  subprocess.Popen(f"ffmpeg -i {file_path} -filter:a loudnorm=print_format=json -f null NULL", shell=True, stdout=subprocess.PIPE).stdout
getLoud =  getLoud.read().decode()
# parse json_str:
jsonstr_loud = json.loads(getLoud)


    


    This gives me "errorMessage": "Expecting value: line 1 column 1 (char 0)"

    


    I tried also this :

    


    os.system(f"ffmpeg -i {file_path} -filter:a loudnorm=print_format=json -f null NULL")


    


    and it outputs :

    


    ffmpeg version N-60236-gffb000fff8-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2022 the FFmpeg developers...
...
[Parsed_loudnorm_0 @ 0x5921940] 
{
    "input_i" : "-9.33",
    "input_tp" : "-0.63",
    "input_lra" : "0.60",
    "input_thresh" : "-19.33",
    "output_i" : "-24.08",
    "output_tp" : "-15.40",
    "output_lra" : "0.60",
    "output_thresh" : "-34.08",
    "normalization_type" : "dynamic",
    "target_offset" : "0.08"
}


    


    In Python, how can I use those parameters, such as input_i, input_tp etc. that I need for the 2nd pass ?

    


    I can't use ffmpeg-normalize because I'm using FFMPEG as a Layer in Lambda.

    


  • ffmpeg failing to add png mask to video : Requested planes not available

    23 août 2022, par Alexandr Sugak

    I am trying to add png mask to make webm video round (cut off its corners).

    


    The command I am using :

    


    video="./dist/tmp/19_2.webm"
mask="./dist/tmp/mask.png"
output="./dist/tmp/circle.webm"

ffmpeg -report -c:v libvpx-vp9 -i "${video}" -loop 1 -i "${mask}" -filter_complex " \
[1:v]alphaextract[alf];\
[0:v][alf]alphamerge" \
-c:a copy -c:v libvpx-vp9 "${output}"


    


    The command output :

    


    sh ./scripts/video_mask.sh 
ffmpeg started on 2022-08-23 at 17:27:48
Report written to "ffmpeg-20220823-172748.log"
Log level: 48
ffmpeg version 5.1-tessus Copyright (c) 2000-2022 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
[libvpx-vp9 @ 0x7fa072f05140] v1.11.0-30-g888bafc78
    Last message repeated 1 times
Input #0, matroska,webm, from './dist/tmp/19_2.webm':
  Metadata:
    ENCODER         : Lavf59.27.100
  Duration: 00:00:02.77, start: -0.007000, bitrate: 308 kb/s
  Stream #0:0(eng): Video: vp9 (Profile 0), yuva420p(tv, unknown/bt709/iec61966-2-1, progressive), 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn (default)
    Metadata:
      ALPHA_MODE      : 1
      ENCODER         : Lavc59.37.100 libvpx-vp9
      DURATION        : 00:00:02.744000000
  Stream #0:1(eng): Audio: opus, 48000 Hz, mono, fltp (default)
    Metadata:
      ENCODER         : Lavc59.37.100 libopus
      DURATION        : 00:00:02.767000000
Input #1, png_pipe, from './dist/tmp/mask.png':
  Duration: N/A, bitrate: N/A
  Stream #1:0: Video: png, pal8(pc), 640x480 [SAR 2835:2835 DAR 4:3], 25 fps, 25 tbr, 25 tbn
[libvpx-vp9 @ 0x7fa082f04880] v1.11.0-30-g888bafc78
Stream mapping:
  Stream #0:0 (libvpx-vp9) -> alphamerge
  Stream #1:0 (png) -> alphaextract:default
  alphamerge:default -> Stream #0:0 (libvpx-vp9)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[libvpx-vp9 @ 0x7fa082f04880] v1.11.0-30-g888bafc78
[Parsed_alphaextract_0 @ 0x7fa083906e80] Requested planes not available.
[Parsed_alphaextract_0 @ 0x7fa083906e80] Failed to configure input pad on Parsed_alphaextract_0
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0
Conversion failed!


    


    I've tried different combination of codecs and pixel formats but I still get the same error. My initial understanding was that ffmpeg fails to find the alpha channel in the input video. By setting -c:v libvpx-vp9 option it looks like ffmpeg correctly picks up yuva420p pixel format but it still gives the same error.

    


    What I am doing wrong ?

    


    Update : if I remove the alphaextract step as suggested in comments, the ffmpeg starts processing video indefinitely (the video I use to test is only 2 sec long). If I specify the number of frames manually, then the output is generated but the mask does not seem to have any effect :

    


    ffmpeg -c:v libvpx-vp9 -i "${video}" -loop 1 -i "${mask}" -filter_complex " \
[0:v][1:v]alphamerge" \
-c:a copy -b:v 2000k -vframes 60 "${output}"


    


     sh ./scripts/video_mask.sh 
ffmpeg version 5.1-tessus Copyright (c) 2000-2022 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
[libvpx-vp9 @ 0x7fdd6b005f00] v1.11.0-30-g888bafc78
    Last message repeated 1 times
Input #0, matroska,webm, from './dist/tmp/19_2.webm':
  Metadata:
    ENCODER         : Lavf59.27.100
  Duration: 00:00:02.77, start: -0.007000, bitrate: 308 kb/s
  Stream #0:0(eng): Video: vp9 (Profile 0), yuva420p(tv, unknown/bt709/iec61966-2-1, progressive), 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn (default)
    Metadata:
      ALPHA_MODE      : 1
      ENCODER         : Lavc59.37.100 libvpx-vp9
      DURATION        : 00:00:02.744000000
  Stream #0:1(eng): Audio: opus, 48000 Hz, mono, fltp (default)
    Metadata:
      ENCODER         : Lavc59.37.100 libopus
      DURATION        : 00:00:02.767000000
Input #1, png_pipe, from './dist/tmp/mask.png':
  Duration: N/A, bitrate: N/A
  Stream #1:0: Video: png, pal8(pc), 640x480 [SAR 2835:2835 DAR 4:3], 25 fps, 25 tbr, 25 tbn
File './dist/tmp/circle.webm' already exists. Overwrite? [y/N] y
[libvpx-vp9 @ 0x7fdd6b007ec0] v1.11.0-30-g888bafc78
Stream mapping:
  Stream #0:0 (libvpx-vp9) -> alphamerge
  Stream #1:0 (png) -> alphamerge
  alphamerge:default -> Stream #0:0 (libvpx-vp9)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[libvpx-vp9 @ 0x7fdd6b007ec0] v1.11.0-30-g888bafc78
[libvpx-vp9 @ 0x7fdd6b024580] v1.11.0-30-g888bafc78
Output #0, webm, to './dist/tmp/circle.webm':
  Metadata:
    encoder         : Lavf59.27.100
  Stream #0:0: Video: vp9, yuva420p(tv, unknown/bt709/iec61966-2-1, progressive), 640x480 [SAR 1:1 DAR 4:3], q=2-31, 2000 kb/s, 1k fps, 1k tbn
    Metadata:
      encoder         : Lavc59.37.100 libvpx-vp9
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  Stream #0:1(eng): Audio: opus, 48000 Hz, mono, fltp (default)
    Metadata:
      ENCODER         : Lavc59.37.100 libopus
      DURATION        : 00:00:02.767000000
frame=   60 fps= 16 q=2.0 Lsize=     285kB time=00:00:01.98 bitrate=1175.5kbits/s speed=0.526x    
video:270kB audio:11kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.529399%


    


  • AVPlayer currentTime not match with the displayed frame after many seeking. (HLS Stream)

    26 août 2022, par D.Bence

    I have a m3u8 file which i want to use with HLS.
link to m3u8 file

    


    My problem is that when i seek many times, the currentTime not match with the displayed frame. I experience that, the more seeking there is more difference. (it's like a constant +offset)

    


    Our use case is very timing sensitive, we need to stop the videos at specific positions. For this we use the following code :

    


    [_player addBoundaryTimeObserverForTimes:times
      queue:dispatch_get_main_queue()
      usingBlock:^{
            weakSelf.player.rate = 0.0;
            // The time is correct here, but the displayed frame is not sync with this time
            CMTimeShow(weakSelf.player.currentTime);
      }
]   


    


    I read that AVURLAssetPreferPreciseDurationAndTimingKey can help, but the currentTime still wrong.

    


    NSDictionary<nsstring> *options = @{AVURLAssetPreferPreciseDurationAndTimingKey:@YES};&#xA;AVURLAsset *urlAsset = [AVURLAsset URLAssetWithURL:url options:options];&#xA;AVPlayerItem *item = [AVPlayerItem playerItemWithAsset:urlAsset];&#xA;</nsstring>

    &#xA;

    I also read that there is a problem with the m3u8 itself. (for example wrong GOP size.)

    &#xA;

    What is the reason for the incorrect currentTime, and how can i fix this ?

    &#xA;

    ffprobe m3u8 :

    &#xA;

    ffprobe https://mrkresz-content-bucket.s3.eu-central-1.amazonaws.com/applicationData/extended-path-videos/4b0046fd-0be7-4a07-bc7c-c1a0069116b1/released/50816bc9-6118-4dd1-a90e-fb72652bb06f-final-from-anonymized.m3u8&#xA;ffprobe version 5.1 Copyright (c) 2007-2022 the FFmpeg developers&#xA;  built with Apple clang version 13.1.6 (clang-1316.0.21.2.5)&#xA;  configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/5.1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-neon&#xA;  libavutil      57. 28.100 / 57. 28.100&#xA;  libavcodec     59. 37.100 / 59. 37.100&#xA;  libavformat    59. 27.100 / 59. 27.100&#xA;  libavdevice    59.  7.100 / 59.  7.100&#xA;  libavfilter     8. 44.100 /  8. 44.100&#xA;  libswscale      6.  7.100 /  6.  7.100&#xA;  libswresample   4.  7.100 /  4.  7.100&#xA;  libpostproc    56.  6.100 / 56.  6.100&#xA;[hls @ 0x152f04280] Skip (&#x27;#EXT-X-VERSION:3&#x27;)&#xA;[hls @ 0x152f04280] Skip (&#x27;#EXT-X-INDEPENDENT-SEGMENTS&#x27;)&#xA;[hls @ 0x152f04280] Opening &#x27;https://mrkresz-content-bucket.s3.eu-central-1.amazonaws.com/applicationData/extended-path-videos/4b0046fd-0be7-4a07-bc7c-c1a0069116b1/released/50816bc9-6118-4dd1-a90e-fb72652bb06f-final-from-anonymized1080p_6000000bitrate.m3u8&#x27; for reading&#xA;[hls @ 0x152f04280] Skip (&#x27;#EXT-X-VERSION:3&#x27;)&#xA;[https @ 0x154045000] Opening &#x27;https://mrkresz-content-bucket.s3.eu-central-1.amazonaws.com/applicationData/extended-path-videos/4b0046fd-0be7-4a07-bc7c-c1a0069116b1/released/50816bc9-6118-4dd1-a90e-fb72652bb06f-final-from-anonymized1080p_15000000bitrate.m3u8&#x27; for reading&#xA;[hls @ 0x152f04280] Skip (&#x27;#EXT-X-VERSION:3&#x27;)&#xA;[https @ 0x154045000] Opening &#x27;https://mrkresz-content-bucket.s3.eu-central-1.amazonaws.com/applicationData/extended-path-videos/4b0046fd-0be7-4a07-bc7c-c1a0069116b1/released/50816bc9-6118-4dd1-a90e-fb72652bb06f-final-from-anonymized1520p_33000000bitrate.m3u8&#x27; for reading&#xA;[hls @ 0x152f04280] Skip (&#x27;#EXT-X-VERSION:3&#x27;)&#xA;[hls @ 0x152f04280] Opening &#x27;https://mrkresz-content-bucket.s3.eu-central-1.amazonaws.com/applicationData/extended-path-videos/4b0046fd-0be7-4a07-bc7c-c1a0069116b1/released/50816bc9-6118-4dd1-a90e-fb72652bb06f-final-from-anonymized1080p_6000000bitrate_00001.ts&#x27; for reading&#xA;[hls @ 0x152f04280] Opening &#x27;https://mrkresz-content-bucket.s3.eu-central-1.amazonaws.com/applicationData/extended-path-videos/4b0046fd-0be7-4a07-bc7c-c1a0069116b1/released/50816bc9-6118-4dd1-a90e-fb72652bb06f-final-from-anonymized1080p_6000000bitrate_00002.ts&#x27; for reading&#xA;[hls @ 0x152f04280] Opening &#x27;https://mrkresz-content-bucket.s3.eu-central-1.amazonaws.com/applicationData/extended-path-videos/4b0046fd-0be7-4a07-bc7c-c1a0069116b1/released/50816bc9-6118-4dd1-a90e-fb72652bb06f-final-from-anonymized1080p_15000000bitrate_00001.ts&#x27; for reading&#xA;[hls @ 0x152f04280] Opening &#x27;https://mrkresz-content-bucket.s3.eu-central-1.amazonaws.com/applicationData/extended-path-videos/4b0046fd-0be7-4a07-bc7c-c1a0069116b1/released/50816bc9-6118-4dd1-a90e-fb72652bb06f-final-from-anonymized1080p_15000000bitrate_00002.ts&#x27; for reading&#xA;[hls @ 0x152f04280] Opening &#x27;https://mrkresz-content-bucket.s3.eu-central-1.amazonaws.com/applicationData/extended-path-videos/4b0046fd-0be7-4a07-bc7c-c1a0069116b1/released/50816bc9-6118-4dd1-a90e-fb72652bb06f-final-from-anonymized1520p_33000000bitrate_00001.ts&#x27; for reading&#xA;[hls @ 0x152f04280] Opening &#x27;https://mrkresz-content-bucket.s3.eu-central-1.amazonaws.com/applicationData/extended-path-videos/4b0046fd-0be7-4a07-bc7c-c1a0069116b1/released/50816bc9-6118-4dd1-a90e-fb72652bb06f-final-from-anonymized1520p_33000000bitrate_00002.ts&#x27; for reading&#xA;Input #0, hls, from &#x27;https://mrkresz-content-bucket.s3.eu-central-1.amazonaws.com/applicationData/extended-path-videos/4b0046fd-0be7-4a07-bc7c-c1a0069116b1/released/50816bc9-6118-4dd1-a90e-fb72652bb06f-final-from-anonymized.m3u8&#x27;:&#xA;  Duration: 00:49:43.00, start: 2.033367, bitrate: 0 kb/s&#xA;  Program 0&#xA;    Metadata:&#xA;      variant_bitrate : 8133826&#xA;  Stream #0:0: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn&#xA;    Metadata:&#xA;      variant_bitrate : 8133826&#xA;  Program 1&#xA;    Metadata:&#xA;      variant_bitrate : 18870392&#xA;  Stream #0:1: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn&#xA;    Metadata:&#xA;      variant_bitrate : 18870392&#xA;  Program 2&#xA;    Metadata:&#xA;      variant_bitrate : 40776144&#xA;  Stream #0:2: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 2704x1520 [SAR 1:1 DAR 169:95], 29.97 fps, 29.97 tbr, 90k tbn&#xA;    Metadata:&#xA;      variant_bitrate : 40776144&#xA;

    &#xA;

    ffprobe original mp4 :

    &#xA;

    ffprobe https://mrkresz-content-bucket.s3.eu-central-1.amazonaws.com/applicationData/extended-path-videos/4b0046fd-0be7-4a07-bc7c-c1a0069116b1/finalized/50816bc9-6118-4dd1-a90e-fb72652bb06f-final-from-anonymized.mp4&#xA;ffprobe version 5.1 Copyright (c) 2007-2022 the FFmpeg developers&#xA;  built with Apple clang version 13.1.6 (clang-1316.0.21.2.5)&#xA;  configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/5.1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-neon&#xA;  libavutil      57. 28.100 / 57. 28.100&#xA;  libavcodec     59. 37.100 / 59. 37.100&#xA;  libavformat    59. 27.100 / 59. 27.100&#xA;  libavdevice    59.  7.100 / 59.  7.100&#xA;  libavfilter     8. 44.100 /  8. 44.100&#xA;  libswscale      6.  7.100 /  6.  7.100&#xA;  libswresample   4.  7.100 /  4.  7.100&#xA;  libpostproc    56.  6.100 / 56.  6.100&#xA;Input #0, mov,mp4,m4a,3gp,3g2,mj2, from &#x27;https://mrkresz-content-bucket.s3.eu-central-1.amazonaws.com/applicationData/extended-path-videos/4b0046fd-0be7-4a07-bc7c-c1a0069116b1/finalized/50816bc9-6118-4dd1-a90e-fb72652bb06f-final-from-anonymized.mp4&#x27;:&#xA;  Metadata:&#xA;    major_brand     : isom&#xA;    minor_version   : 512&#xA;    compatible_brands: isomiso2avc1mp41&#xA;    encoder         : Lavf58.76.100&#xA;  Duration: 00:49:42.81, start: 0.000000, bitrate: 36142 kb/s&#xA;  Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 2486x1398, 36138 kb/s, 29.97 fps, 29.97 tbr, 30k tbn (default)&#xA;    Metadata:&#xA;      handler_name    : VideoHandler&#xA;      vendor_id       : [0][0][0][0]&#xA;

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