Recherche avancée

Sur d’autres sites (12987)

• Trying to tonemap 14-bit grayscale video

  12 janvier 2018, par Trevor

  I’m trying to generate h.264 video from raw 2-byte gray video (14-bit range encoded in 16-bit values). I can do something like :

  ffmpeg -f rawvideo -pix_fmt gray16le -s:v 1280x720 -r 60 -i input.raw -c:v libx264 output.mp4

  And I get video but it’s pretty dark, not sure if it’s clipping, doing a linear remap, or storing the 16-bit data and VLC is doing the remap. ffprobe is reporting Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuvj444p(pc), 1280x720, 108 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc

  I was figuring I’d use the tonemap filter to make a better mapping. I added a filter before the output file with -vf.

  • tonemap=hable errors Impossible to convert between the formats supported by the filter 'graph 0 input from stream 0:0' and the filter 'auto_scaler_0'
  • zscale=transfer=linear,tonemap=hable errors Impossible to convert between the formats supported by the filter 'Parsed_tonemap_1' and the filter 'auto_scaler_1'
  • zscale=transfer=linear,tonemap=hable,zscale=transfer=bt709,format=yuvj444p errors code 3074: no path between colorspaces

  I’m not sure where to proceed from here...

• Fluent-FFmpeg Error : ffprobe exited with code 1

  24 juin 2020, par Thiago Cardoso

  I'm using a Lambda function to split a given file into pieces, and often I receive an error during the file processing :

  



  {&#xA;    "errorType": "Error",&#xA;    "errorMessage": "ffprobe exited with code 1\nffprobe version 4.2.2-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2007-2019 the FFmpeg developers\n  built with gcc 8 (Debian 8.3.0-6)\n  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg\n  libavutil      56. 31.100 / 56. 31.100\n  libavcodec     58. 54.100 / 58. 54.100\n  libavformat    58. 29.100 / 58. 29.100\n  libavdevice    58.  8.100 / 58.  8.100\n  libavfilter     7. 57.100 /  7. 57.100\n  libswscale      5.  5.100 /  5.  5.100\n  libswresample   3.  5.100 /  3.  5.100\n  libpostproc    55.  5.100 / 55.  5.100\n[mov,mp4,m4a,3gp,3g2,mj2 @ 0x6f35c40] Format mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection possible!\n[mov,mp4,m4a,3gp,3g2,mj2 @ 0x6f35c40] moov atom not found\n/tmp/file.mp4: Invalid data found when processing input\n",&#xA;    "stack": [&#xA;        "Error: ffprobe exited with code 1",&#xA;        "ffprobe version 4.2.2-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2007-2019 the FFmpeg developers",&#xA;        "  built with gcc 8 (Debian 8.3.0-6)",&#xA;        "  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg",&#xA;        "  libavutil      56. 31.100 / 56. 31.100",&#xA;        "  libavcodec     58. 54.100 / 58. 54.100",&#xA;        "  libavformat    58. 29.100 / 58. 29.100",&#xA;        "  libavdevice    58.  8.100 / 58.  8.100",&#xA;        "  libavfilter     7. 57.100 /  7. 57.100",&#xA;        "  libswscale      5.  5.100 /  5.  5.100",&#xA;        "  libswresample   3.  5.100 /  3.  5.100",&#xA;        "  libpostproc    55.  5.100 / 55.  5.100",&#xA;        "[mov,mp4,m4a,3gp,3g2,mj2 @ 0x6f35c40] Format mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection possible!",&#xA;        "[mov,mp4,m4a,3gp,3g2,mj2 @ 0x6f35c40] moov atom not found",&#xA;        "/tmp/file.mp4: Invalid data found when processing input",&#xA;        "",&#xA;        "    at ChildProcess.<anonymous> (/var/task/node_modules/fluent-ffmpeg/lib/ffprobe.js:233:22)",&#xA;        "    at ChildProcess.emit (events.js:198:13)",&#xA;        "    at ChildProcess.EventEmitter.emit (domain.js:448:20)",&#xA;        "    at Process.ChildProcess._handle.onexit (internal/child_process.js:248:12)"&#xA;    ]&#xA;}&#xA;</anonymous>

  



  I see the error message, and what it is telling me, but what I cannot understand is that this very file works sometimes. Before the process starts I download the file from S3 into my Lambda container, maybe this is my problem, but still, this works sometimes.

  


• color of soundwaves in ffmpeg [closed]

  20 janvier, par Jad Alaouie

  I am trying to create a video that has a background image and an audio and I want to display the soundwaves in the middle of the video and in the center I have a play button. I am done with 99% of the work but still stuck on the soundwaves colors, which is gray somehow but I want them to be white, and is it possible to make the soundwave smoother ?

  


  filter_complex = (
"[0:a]showwaves=s=700x300:mode=line:colors=white[v]:draw=scale:scale=sqrt[sw_left];"  
"[0:a]showwaves=s=700x300:mode=line:colors=white[v]:draw=scale:scale=sqrt[sw_right];"  
"[1][sw_left]overlay=(W-w)/2-500:(H-h)/2:format=auto[bg_left];"
"[bg_left][sw_right]overlay=(W+w)/2-200:(H-h)/2:format=auto[bg_with_waves];"
"[2]scale={0}:{1}[play_button];"
"[bg_with_waves][play_button]overlay=(W-w)/2:(H-h)/2:format=auto[bg_with_play_button];"
"[bg_with_play_button]format=yuv420p[v]"  
).format(play_button_width, play_button_height)

ffmpeg_command = [
"ffmpeg", "-hwaccel", "cuda", "-i", audio_path, "-i", background_path, "-i", play_button_path, 
"-filter_complex", filter_complex,
"-map", "[v]", "-map", "0:a", "-c:v", "h264_nvenc", "-preset", "p7", 
"-c:a", "aac", "-b:a", "192k", "-movflags", "+faststart", "output.mp4"
 ]