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• FFMPEG issue with concat video made from single image

  12 mai 2023, par Jacob

  I am pulling my hair out right now. I am developing a video editing program. When I export two videos, concat works great. However, when I create a video from a single image (title screen) and try to concat that video with a regular video, only the title screen is exported. And no errors.

  


  Below is the code for creating the title screen :

  


  parameters = "-loop 1 -i " + '"' + video.VideoThumbPath + '"' + " -c:v libx264 -t " + video.TitleDuration.ToString() + " -pix_fmt yuv420p " + vidPath + @"\v" + outputFile.ToString() + ".MP4";


  


  Below is the code for exporting a regular non title screen video :

  


  parameters = "-y -i " + '"' + frames[0].VideoPath + '"' + " -filter_complex " + '"' + @"[0:v]trim=" + frames[0].TimeCode.TotalSeconds + @":" + frames[1].TimeCode.TotalSeconds +
                           @", setpts=PTS-STARTPTS[trimedv0];[trimedv0]yadif," + orientation + @"setsar=1/1, eq=contrast=1:brightness=" + video.Brightness + '"' + " -sn -an -c:v libx264 -preset ultrafast -profile:v baseline -level 3.0 " +
                           @"-pix_fmt yuv420p -f mpegts " + vidPath + @"\v" + outputFile.ToString() + ".MP4";


  


  Below is the code to concat both videos :

  


  parameters = "-probesize 100M -analyzeduration 100M -i concat:" + '"' + concatString + '"' + @" -c:v copy " + '"' + ExportOptions.CompleteDestinationPath + '"';


  


  Like I said, using this code for two MP4 video that were not made from a single image, it works great. If I create a MP4 from a single image with a duration of 5 seconds and concat it with a normal MP4, only the title screen is exported.

  


  Below is the output from FFMPEG. It shows the concat string with 2 videos but only concats the first one.

  


  09:59:32:366    ffmpeg version N-110043-gadb5f7b41f-20230318 Copyright (c) 2000-2023 the FFmpeg developers


  


  09:59:32:366 built with gcc 12.2.0 (crosstool-NG 1.25.0.90_cf9beb1)
09:59:32:366 configuration : —prefix=/ffbuild/prefix —pkg-config-flags=—static —pkg-config=pkg-config —cross-prefix=x86_64-w64-mingw32- —arch=x86_64 —target-os=mingw32 —enable-gpl —enable-version3 —disable-debug —disable-w32threads —enable-pthreads —enable-iconv —enable-libxml2 —enable-zlib —enable-libfreetype —enable-libfribidi —enable-gmp —enable-lzma —enable-fontconfig —enable-libvorbis —enable-opencl —disable-libpulse —enable-libvmaf —disable-libxcb —disable-xlib —enable-amf —enable-libaom —enable-libaribb24 —enable-avisynth —enable-chromaprint —enable-libdav1d —enable-libdavs2 —disable-libfdk-aac —enable-ffnvcodec —enable-cuda-llvm —enable-frei0r —enable-libgme —enable-libkvazaar —enable-libass —enable-libbluray —enable-libjxl —enable-libmp3lame —enable-libopus —enable-librist —enable-libssh —enable-libtheora —enable-libvpx —enable-libwebp —enable-lv2 —disable-libmfx —enable-libvpl —enable-openal —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenh264 —enable-libopenjpeg —enable-libopenmpt —enable-librav1e —enable-librubberband —enable-schannel —enable-sdl2 —enable-libsoxr —enable-libsrt —enable-libsvtav1 —enable-libtwolame —enable-libuavs3d —disable-libdrm —disable-vaapi —enable-libvidstab —enable-vulkan —enable-libshaderc —enable-libplacebo —enable-libx264 —enable-libx265 —enable-libxavs2 —enable-libxvid —enable-libzimg —enable-libzvbi —extra-cflags=-DLIBTWOLAME_STATIC —extra-cxxflags= —extra-ldflags=-pthread —extra-ldexeflags= —extra-libs=-lgomp —extra-version=20230318
09:59:32:366 libavutil 58. 4.100 / 58. 4.100
09:59:32:366 libavcodec 60. 6.101 / 60. 6.101
09:59:32:366 libavformat 60. 4.100 / 60. 4.100
09:59:32:366 libavdevice 60. 2.100 / 60. 2.100
09:59:32:366 libavfilter 9. 4.100 / 9. 4.100
09:59:32:366 libswscale 7. 2.100 / 7. 2.100
09:59:32:366 libswresample 4. 11.100 / 4. 11.100
09:59:32:366 libpostproc 57. 2.100 / 57. 2.100
09:59:32:366 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'concat:C :\Users\JDINES\AppData\Roaming\FCS\VidBin\v1000.MP4|C :\Users\JDINES\AppData\Roaming\FCS\VidBin\v1001.MP4' :
09:59:32:366 Metadata :
09:59:32:366 major_brand : isom
09:59:32:366 minor_version : 512
09:59:32:366 compatible_brands : isomiso2avc1mp41
09:59:32:366 encoder : Lavf60.4.100
09:59:32:366 Duration : 00:00:05.00, start : 0.000000, bitrate : 64102 kb/s
09:59:32:366 Stream #0:00x1 : Video : h264 (High) (avc1 / 0x31637661), yuv420p(tv, unknown/bt709/iec61966-2-1, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 18 kb/s, 30 fps, 30 tbr, 15360 tbn (default)
09:59:32:366 Metadata :
09:59:32:366 handler_name : VideoHandler
09:59:32:366 vendor_id : [0][0][0][0]
09:59:32:366 encoder : Lavc60.6.101 libx264
09:59:32:366 Output #0, mp4, to 'C :\Users\JDINES\Desktop\EXPORT TEST\qwe.MP4' :
09:59:32:366 Metadata :
09:59:32:366 major_brand : isom
09:59:32:366 minor_version : 512
09:59:32:366 compatible_brands : isomiso2avc1mp41
09:59:32:366 encoder : Lavf60.4.100
09:59:32:366 Stream #0:0(und) : Video : h264 (High) (avc1 / 0x31637661), yuv420p(tv, unknown/bt709/iec61966-2-1, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 18 kb/s, 30 fps, 30 tbr, 15360 tbn (default)
09:59:32:366 Metadata :
09:59:32:366 handler_name : VideoHandler
09:59:32:366 vendor_id : [0][0][0][0]
09:59:32:366 encoder : Lavc60.6.101 libx264
09:59:32:366 Stream mapping :
09:59:32:366 Stream #0:0 -> #0:0 (copy)
09:59:32:366 Press [q] to stop, [?] for help
09:59:32:366 frame= 0 fps=0.0 q=-1.0 size= 0kB time=-00:00:00.06 bitrate= -0.0kbits/s speed=N/A
  
frame= 150 fps=0.0 q=-1.0 Lsize= 14kB time=00:00:04.90 bitrate= 23.4kbits/s speed=2e+03x
  
09:59:32:366 video:11kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead : 23.005581%

  


  Any help would be much appreciated !

  


  I figured this out finally !!!

  


  The below code fixed it :

  


  parameters = "-loop 1 -i " + '"' + video.VideoThumbPath + '"' + " -sn -an -c:v libx264 -preset ultrafast -profile:v baseline -level 3.0 " +
                           @"-t 5 -pix_fmt yuv420p -f mpegts " + vidPath + @"\v" + outputFile.ToString() + ".MP4";


  


• FFMPEG update from 5.0 to 6.0 out_0_0 buffer queued [closed]

  16 mai 2023, par Kevitto

  I've been using ffmpeg 5.0 for some time, encoding an audio stream to an rtp server, but since I updated to ffmpeg 6.0 I get this :

  


  [out_0_0 @ 0x55ac187b60] 100 buffers queued in out_0_0, something may be wrong.


  


  Below is the ffmpeg call :

  


  ffmpeg -re -f alsa -i default:CARD:card1 -ac 2 -af aresample=async=1 -acodec libopus -b:a 48000 -f rtp "rtp://127.0.0.1:5002"


  


  And here is the full startup log :

  


  ffmpeg version 549430e Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 10 (Debian 10.2.1-6)
  configuration: --extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/lib --extra-libs='-lpthread -lm -latomic' --arch=arm64 --enable-gmp --enable-gpl --enable-libopus --enable-nonfree --enable-version3 --target-os=linux --enable-pthreads --enable-openssl --enable-hardcoded-tables
  libavutil      58.  2.100 / 58.  2.100
  libavcodec     60.  3.100 / 60.  3.100
  libavformat    60.  3.100 / 60.  3.100
  libavdevice    60.  1.100 / 60.  1.100
  libavfilter     9.  3.100 /  9.  3.100
  libswscale      7.  1.100 /  7.  1.100
  libswresample   4. 10.100 /  4. 10.100
  libpostproc    57.  1.100 / 57.  1.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, alsa, from 'default:CARD=pisound':
  Duration: N/A, start: 1684250059.973334, bitrate: 1536 kb/s
  Stream #0:0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_s16le (native) -> opus (libopus))
Press [q] to stop, [?] for help
Output #0, rtp, to 'rtp://127.0.0.1:5002':
  Metadata:
    encoder         : Lavf60.3.100
  Stream #0:0: Audio: opus, 48000 Hz, stereo, s16, 48 kb/s
    Metadata:
      encoder         : Lavc60.3.100 libopus
SDP:
v=0
o=- 0 0 IN IP4 127.0.0.1
s=No Name
c=IN IP4 127.0.0.1
t=0 0
a=tool:libavformat 60.3.100
m=audio 5002 RTP/AVP 97
b=AS:48
a=rtpmap:97 opus/48000/2
a=fmtp:97 sprop-stereo=1

size=       0kB time=-577014:32:22.77 bitrate=  -0.0kbits/s speed=N/A    
size=       0kB time=-577014:32:22.77 bitrate=  -0.0kbits/s speed=N/A    
[out_0_0 @ 0x559f530c60] 100 buffers queued in out_0_0, something may be wrong.
size=       0kB time=-577014:32:22.77 bitrate=  -0.0kbits/s speed=N/A    
size=       0kB time=-577014:32:22.77 bitrate=  -0.0kbits/s speed=N/A    
size=       0kB time=-00:00:00.00 bitrate=  -0.0kbits/s speed=N/A    
size=       0kB time=-00:00:00.00 bitrate=  -0.0kbits/s speed=N/A    
[alsa @ 0x559f4db460] ALSA buffer xrun.
size=       6kB time=00:00:02.81 bitrate=  16.7kbits/s speed=0.93x    
size=       6kB time=00:00:02.81 bitrate=  16.7kbits/s speed=0.797x    
size=       6kB time=00:00:02.83 bitrate=  16.6kbits/s speed=0.703x    
size=       6kB time=00:00:02.83 bitrate=  16.6kbits/s speed=0.624x    
size=       6kB time=00:00:02.83 bitrate=  16.6kbits/s speed=0.562x    
size=       6kB time=00:00:02.83 bitrate=  16.6kbits/s speed=0.511x    
[alsa @ 0x559f4db460] ALSA buffer xrun.
size=      10kB time=00:00:05.67 bitrate=  14.8kbits/s speed=0.939x    
size=      10kB time=00:00:05.67 bitrate=  14.8kbits/s speed=0.866x    
size=      10kB time=00:00:05.67 bitrate=  14.8kbits/s speed=0.805x    
size=      10kB time=00:00:05.67 bitrate=  14.8kbits/s speed=0.751x    
size=      10kB time=00:00:05.69 bitrate=  14.8kbits/s speed=0.707x    
[alsa @ 0x559f4db460] ALSA buffer xrun.
size=      13kB time=00:00:05.95 bitrate=  17.8kbits/s speed=0.696x    
size=      16kB time=00:00:08.51 bitrate=  15.2kbits/s speed=0.939x    
size=      16kB time=00:00:08.51 bitrate=  15.2kbits/s speed=0.89x    
size=      16kB time=00:00:08.53 bitrate=  15.2kbits/s speed=0.847x    
size=      16kB time=00:00:08.53 bitrate=  15.2kbits/s speed=0.806x    
size=      16kB time=00:00:08.53 bitrate=  15.2kbits/s speed=0.77x    
[alsa @ 0x559f4db460] ALSA buffer xrun.
size=      21kB time=00:00:11.37 bitrate=  14.8kbits/s speed=0.981x  


  


  I tried changing the output to -f null /dev/null to see if the rtp was the issue, but I get the same thing. I made sure the user running it was a member to the "audio" group and arecord -l and aplay -l both show the card with the right name and information. I even tried to use its hw code instead of the default name, and same issue.

  


• Failed setup for format dxva2_vld : hwaccel initialisation returned error

  13 juin 2023, par james

  My program is a video player based on ffmpeg implementation, enabling d3d11va and dxva2 hardware acceleration to decode video frames, play most of the video is normal, only a small part of the video will report this error, ffmpeg printed log as follows :
I:2023-06-13 15:34:53 ms:887:No decoder device for codec found
I:2023-06-13 15:34:53 ms:887:Failed setup for format dxva2_vld : hwaccel initialisation returned error.
I:2023-06-13 15:34:53 ms:888:Format dxva2_vld not usable, retrying get_format() without it.
I:2023-06-13 15:34:53 ms:888:decode_slice_header error
I:2023-06-13 15:34:53 ms:888:no frame !

  


  If ffplay is used and d3d11va and dxva2 hardware acceleration is not enabled, the video can be played normally, and the printed video information is as follows :
PS D :\msys64\home\wangj\ffmpeg-4.4.1\buildout\bin> .\ffplay.exe -i D :\Desktop\13132023061300012_1_C1_34.mp4
ffplay version 4.4.1 Copyright (c) 2003-2021 the FFmpeg developers
configuration : —prefix=./buildout —arch=x86 —toolchain=msvc —enable-shared —disable-debug —enable-sdl2 —enable-dxva2 —enable-d3d11va
libavutil 56. 70.100 / 56. 70.100
libavcodec 58.134.100 / 58.134.100
libavformat 58. 76.100 / 58. 76.100
libavdevice 58. 13.100 / 58. 13.100
libavfilter 7.110.100 / 7.110.100
libswscale 5. 9.100 / 5. 9.100
libswresample 3. 9.100 / 3. 9.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D :\Desktop\13132023061300012_1_C1_34.mp4' :
Metadata :
major_brand : isom
minor_version : 512
compatible_brands : isomiso2avc1mp41
encoder : Lavf56.38.102
Duration : 00:00:44.00, start : 0.000000, bitrate : 1706 kb/s
Stream #0:0(und) : Video : h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080, 1705 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata :
handler_name : VideoHandler
vendor_id : [0][0][0][0]

  


  Is this pixel format not supported by d3d11va and dxva2 ? What can I do to get ffplay to play this video file with hardware acceleration ?

  


  When d3d11va and dxva2 hardware acceleration is enabled, most of the videos that can be played also have yuv420p pixel format, why can't this video be played？