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• Python FFmpeg Video Streaming : how to capture multiple representations with camera

  17 janvier 2023, par LUKA TADIĆ

  I am trying to capture webcam stream and make HLS stream. I managed to create HLS stream for one Representation but when I try to create (hls.output) more than one, I get this error :

  


  C:\Users\ltadic\Desktop\hls stream>C:/Users/ltadic/AppData/Local/Programs/Python/Python311/python.exe "c:/Users/ltadic/Desktop/hls stream/camera_stream.py"&#xA;ERROR:root:ffmpeg failed to execute command: b"ffmpeg version 2022-12-11-git-c3e20f78b0-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers\r\n  built with gcc 12.1.0 (Rev2, Built by MSYS2 project)\r\n &#xA; configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint\r\n  libavutil      57. 43.100 / 57. 43.100\r\n  libavcodec     59. 55.100 / 59. 55.100\r\n  libavformat    59. 34.102 / 59. 34.102\r\n  libavdevice    59.  8.101 / 59.  8.101\r\n  libavfilter     8. 52.100 /  8. 52.100\r\n  libswscale      6.  8.112 /  6.  8.112\r\n  libswresample   4.  9.100 /  4.  9.100\r\n  libpostproc    56.  7.100 / 56.  7.100\r\nInput #0, dshow, from &#x27;video=Fantech Luminous C30&#x27;:\r\n  Duration: N/A, start: 1593.585118, bitrate: N/A\r\n  Stream #0:0: Video: mjpeg (Baseline) (MJPG / 0x47504A4D), yuvj420p(pc, bt470bg/bt709/unknown), 1920x1080, 25 fps, 25 tbr, 10000k tbn\r\n[dshow @ 0000018b1c4d4280] Could not run graph (sometimes caused by a device already in use by other application)\r\nvideo=Fantech Luminous C30: I/O error\r\n"&#xA;Traceback (most recent call last):&#xA;  File "c:\Users\ltadic\Desktop\hls stream\camera_stream.py", line 13, in <module>&#xA;    hls.output(&#x27;C:\\Users\\ltadic\\Desktop\\camera_stream\\hls1.m3u8&#x27;)&#xA;  File "C:\Users\ltadic\AppData\Local\Programs\Python\Python311\Lib\site-packages\ffmpeg_streaming\_media.py", line 93, in output&#xA;    self.run(ffmpeg_bin, monitor, **options)&#xA;  File "C:\Users\ltadic\AppData\Local\Programs\Python\Python311\Lib\site-packages\ffmpeg_streaming\_media.py", line 121, in run  &#xA;    asyncio.run(self.async_run(ffmpeg_bin, monitor, **options))&#xA;  File "C:\Users\ltadic\AppData\Local\Programs\Python\Python311\Lib\asyncio\runners.py", line 190, in run&#xA;    return runner.run(main)&#xA;           ^^^^^^^^^^^^^^^^&#xA;  File "C:\Users\ltadic\AppData\Local\Programs\Python\Python311\Lib\asyncio\runners.py", line 118, in run&#xA;    return self._loop.run_until_complete(task)&#xA;           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^&#xA;  File "C:\Users\ltadic\AppData\Local\Programs\Python\Python311\Lib\asyncio\base_events.py", line 650, in run_until_complete&#xA;    return future.result()&#xA;           ^^^^^^^^^^^^^^^&#xA;  File "C:\Users\ltadic\AppData\Local\Programs\Python\Python311\Lib\site-packages\ffmpeg_streaming\_media.py", line 112, in async_run&#xA;    self._run(ffmpeg_bin, monitor, **options)&#xA;  File "C:\Users\ltadic\AppData\Local\Programs\Python\Python311\Lib\site-packages\ffmpeg_streaming\_media.py", line 106, in _run&#xA;    self.pipe, err = process.run()&#xA;</module>

  


  This is my code :

  


  import ffmpeg_streaming
from ffmpeg_streaming import Formats,Bitrate, Representation, Size 

video = ffmpeg_streaming.input('Fantech Luminous C30', capture = True)

_360p  = Representation(Size(640, 360), Bitrate(276 * 1024, 128 * 1024))
_480p  = Representation(Size(854, 480), Bitrate(750 * 1024, 192 * 1024))
_720p  = Representation(Size(1280, 720), Bitrate(2048 * 1024, 320 * 1024))

hls = video.hls(Formats.h264(),hls_list_size=10, hls_time=5)
hls.flags('delete_segments')
hls.representations(_360p, _480p, _720p)
hls.output('C:\\Users\\ltadic\\Desktop\\camera_stream\\hls1.m3u8')



  


• How to play HDR10 videos using ffplay and ffmpeg ?

  6 janvier 2023, par befandy

  I'm trying to play on Windows a HDR10 video. My display support 10 bits HDR content.
The command that I'm using to play the HDR10 video is the following.
ffplay -sws_flags print_info -i video.mp4

  


  But the output looks washed out.

  


  the log are the following :

  


  ffplay version 2022-03-28-git-5ee198f9aa-full_build-www.gyan.dev Copyright (c) 2003-2022 the FFmpeg developers built with gcc 11.2.0 (Rev7, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint libavutil      57. 24.101 / 57. 24.101 libavcodec     59. 25.100 / 59. 25.100 libavformat    59. 20.101 / 59. 20.101 libavdevice    59.  6.100 / 59.  6.100 libavfilter     8. 29.100 /  8. 29.100 libswscale      6.  6.100 /  6.  6.100 libswresample   4.  6.100 /  4.  6.100 libpostproc    56.  5.100 / 56.  5.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':=0/0 Metadata: major_brand     : isom minor_version   : 512 compatible_brands: isomiso2mp41 encoder         : Lavf58.29.100 Duration: 00:00:08.78, start: 0.000000, bitrate: 159424 kb/s Stream #0:0[0x1](und): Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv, bt2020nc/bt2020/smpte2084, progressive), 3840x2160 [SAR 1:1 DAR 16:9], 159427 kb/s, 60 fps, 60 tbr, 15360 tbn (default) Metadata: handler_name    : VideoHandler vendor_id       : [0][0][0][0] [swscaler @ 000001d62a81d000] [swscaler @ 000001d622aebf80] bicubic scaler, from yuv420p10le to yuv420p using MMXEXT [swscaler @ 000001d62a81d000] [swscaler @ 000001d622aebf80] using unscaled yuv420p10le -> yuv420p special converter [swscaler @ 000001d62a81d000] [swscaler @ 000001d635638600] bicubic scaler, from yuv420p10le to yuv420p using MMXEXT [swscaler @ 000001d62a81d000] [swscaler @ 000001d635638600] using unscaled yuv420p10le -> yuv420p special converter [swscaler @ 000001d62a81d000] [swscaler @ 000001d635661d80] bicubic scaler, from yuv420p10le to yuv420p using MMXEXT [swscaler @ 000001d62a81d000] [swscaler @ 000001d635661d80] using unscaled yuv420p10le -> yuv420p special converter [swscaler @ 000001d62a81d000] [swscaler @ 000001d63567df80] bicubic scaler, from yuv420p10le to yuv420p using MMXEXT [swscaler @ 000001d62a81d000] [swscaler @ 000001d63567df80] using unscaled yuv420p10le -> yuv420p special converter [swscaler @ 000001d62a81d000] [swscaler @ 000001d6356bbf80] bicubic scaler, from yuv420p10le to yuv420p using MMXEXT 3.44 M-V:  0.204 fd=  91 aq=    0KB vq=15552KB sq=    0B f=0/0

  


  With the help of '-sws_flags print_info' flag we can see that there is a downscaling happening from 10 bits to 8 bits "yuv420p10le -> yuv420p"

  


  I have try to play the video using VLC and it is working fine on my display : colour are vivid and display bright.

  


  I have also try to decode first the video and then past metadata directly to ffplay as follow.
Decoding to yuv format with : ffmpeg -i video.mp4 video.yuv
Then play yuv file : ffplay -framerate 60 -video_size 3840x2160 -pixel_format yuv420p10le -color_range tv -color_trc smpte2084 -color_primaries bt2020 -colorspace bt2020nc -i video.yuv

  


  But the result is the same washed out color and "yuv420p10le -> yuv420p" conversion

  


  Is there a way to play a HDR video (encoded or decoded stream) with ffplay ?

  


• ffmpeg not capture screenshot on siteground

  20 mars 2023, par saddam

  I'm using ffmpeg (v5.1) in laravel with PHP 7.4

  


  //where to save the image  
$new_file_name = time() . '.jpg';
$image = public_path() . '/uploads/images/' . $new_file_name; //Full path of image
$path = public_path() . '/uploads/' . $path;   //Full path of video
//ffmpeg command to find thumbnail from video
$interval = env('PLAEHOLDER_CAPTURE_TIME', 2);  //time to take screenshot at  
$cmd = "ffmpeg -i $path -ss 00:00:01 -vframes 1 $image 2>&1";
exec($cmd, $output);
var_dump($output); 
exit;


  


  It's throwing an error :

  


  


  array(32) [0]=> string(64) "ffmpeg version 5.1 Copyright (c) 2000-2022 the FFmpeg developers" [1]=> string(25) " built with gcc 12 (GCC)" [2]=> string(128) " configuration : —enable-pic —enable-static —disable-ffplay —disable-ffprobe —disable-doc —disable-avdevice —disable-alsa" [3]=> string(40) " libavutil 57. 28.100 / 57. 28.100" [4]=> string(40) " libavcodec 59. 37.100 / 59. 37.100" [5]=> string(40) " libavformat 59. 27.100 / 59. 27.100" [6]=> string(40) " libavfilter 8. 44.100 / 8. 44.100" [7]=> string(40) " libswscale 6. 7.100 / 6. 7.100" [8]=> string(40) " libswresample 4. 7.100 / 4. 7.100" [9]=> string(130) "Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/customer/www/backend.clavora.com/public_html/public/uploads/videos/1679277906.mp4' :" [10]=> string(11) " Metadata :" [11]=> string(26) " major_brand : isom" [12]=> string(25) " minor_version : 512" [13]=> string(39) " compatible_brands : isomiso2avc1mp41" [14]=> string(35) " encoder : Lavf58.45.100" [15]=> string(59) " Duration : 00:00:32.58, start : 0.000000, bitrate : 515 kb/s" [16]=> string(161) " Stream #0:00x1 : Video : h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 576x1024 [SAR 1:1 DAR 9:16], 380 kb/s, 30 fps, 30 tbr, 15360 tbn (default)" [17]=> string(13) " Metadata :" [18]=> string(56) " handler_name : ?Mainconcept Video Media Handler" [19]=> string(36) " vendor_id : [0][0][0][0]" [20]=> string(104) " Stream #0:10x2 : Audio : aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 129 kb/s (default)" [21]=> string(13) " Metadata :" [22]=> string(60) " handler_name : #Mainconcept MP4 Sound Media Handler" [23]=> string(36) " vendor_id : [0][0][0][0]" [24]=> string(15) "Stream mapping :" [25]=> string(55) " Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))" [26]=> string(31) "Press [q] to stop, [?] for help" [27]=> string(78) "[auto_scale_0 @ 0x564f48c3b180] Failed to configure output pad on auto_scale_0" [28]=> string(29) "Error reinitializing filters !" [29]=> string(76) "Failed to inject frame into filter network : Resource temporarily unavailable" [30]=> string(55) "Error while processing the decoded data for stream #0:0" [31]=> string(18) "Conversion failed !"