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• ffmpeg : Input link parameters do not match the corresponding output link parameters, when concatenating same size videos

  4 mars 2021, par mSourire

  I'm trying to combine a video and an audio, using the following command :

  


  ffmpeg -y -i 1.mkv -i 1.mka 
-max_muxing_queue_size 10000 -preset veryfast -r 30 -crf 20 -b:a 96000 -vbr on
-strict experimental
-filter_complex '
color=black:s=320x240:d=7ms[black0];
aevalsrc=0:d=15ms[silence1];
[black0][0]concat=n=2:v=1:a=0[video];
[1][silence1]concat=n=2:v=0:a=1[audio]'
-map [video] -map [audio] -c:v libvpx -c:a libopus output.webm


  


  But ffmpeg returns an error :

  


  [Parsed_concat_2 @ 0x7f8004506d00] Input link in0:v0 parameters (size 640x480, SAR 1:1) do not match the corresponding output link in0:v0 parameters (320x240, SAR 1:1)
[Parsed_concat_2 @ 0x7f8004506d00] Failed to configure output pad on Parsed_concat_2
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0
[libopus @ 0x7f800500c000] 1 frames left in the queue on closing
Conversion failed!


  


  It looks like ffmpeg is unable to concatenate video and black frames, complaining, that video has a distinct resolution, but that's not true :

  


  #> ffprobe 1.mkv
Input #0, matroska,webm, from '1.mkv':
  Metadata:
    encoder         : GStreamer matroskamux version 1.8.1.1
    creation_time   : 2021-03-02T13:44:03.000000Z
  Duration: 00:01:48.41, start: 0.710000, bitrate: 757 kb/s
    Stream #0:0(eng): Video: vp8, yuv420p(progressive), 320x240, SAR 1:1 DAR 4:3, 120 tbr, 1k tbn, 1k tbc (default)
    Metadata:
      title           : Video


  


  So, both the input source and the filter has the same resolution.

  


  When I'm trying to change the color filter to "color=s=640x480", ffmpeg says an opposite thing :

  


  [Parsed_concat_2 @ 0x7fca3ca185c0] Input link in0:v0 parameters (size 320x240, SAR 1:1) do not match the corresponding output link in0:v0 parameters (640x480, SAR 1:1)
[Parsed_concat_2 @ 0x7fca3ca185c0] Failed to configure output pad on Parsed_concat_2
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument


  


  Help please to solve this !

  


  Full listing :

  


  ffmpeg -y -i 1.mkv -i 1.mka
-max_muxing_queue_size 10000
-preset veryfast -r 30 -crf 20 -b:a 96000 -vbr on
-strict experimental
-filter_complex '
color=black:s=320x240:d=7ms[black0];
aevalsrc=0:d=15ms[silence1];
[black0][0]concat=n=2:v=1:a=0[video];
[1][silence1]concat=n=2:v=0:a=1[audio]'
-map [video] -map [audio] -c:v libvpx -c:a libopus output.webm

ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.1_9 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --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-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --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-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, matroska,webm, from '1.mkv':
  Metadata:
    encoder         : GStreamer matroskamux version 1.8.1.1
    creation_time   : 2021-03-02T13:44:03.000000Z
  Duration: 00:01:48.41, start: 0.710000, bitrate: 757 kb/s
    Stream #0:0(eng): Video: vp8, yuv420p(progressive), 320x240, SAR 1:1 DAR 4:3, 120 tbr, 1k tbn, 1k tbc (default)
    Metadata:
      title           : Video
Input #1, matroska,webm, from '1.mka':
  Metadata:
    encoder         : GStreamer matroskamux version 1.8.1.1
    creation_time   : 2021-03-02T13:44:03.000000Z
  Duration: 00:01:48.40, start: 0.703000, bitrate: 38 kb/s
    Stream #1:0(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
    Metadata:
      title           : Audio
Codec AVOption preset (Configuration preset) specified for output file #0 (output.webm) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
Stream mapping:
  Stream #0:0 (vp8) -> concat:in1:v0
  Stream #1:0 (opus) -> concat:in0:a0
  concat -> Stream #0:0 (libvpx)
  concat -> Stream #0:1 (libopus)
Press [q] to stop, [?] for help
[libvpx @ 0x7fe08a80bc00] v1.9.0
[libvpx @ 0x7fe08a80bc00] Bitrate not specified for constrained quality mode, using default of 256kbit/sec
Output #0, webm, to 'output.webm':
  Metadata:
    encoder         : Lavf58.45.100
    Stream #0:0: Video: vp8 (libvpx), yuv420p, 320x240 [SAR 1:1 DAR 4:3], q=-1--1, 256 kb/s, 30 fps, 1k tbn, 30 tbc (default)
    Metadata:
      encoder         : Lavc58.91.100 libvpx
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
    Stream #0:1: Audio: opus (libopus), 48000 Hz, stereo, flt, 96 kb/s (default)
    Metadata:
      encoder         : Lavc58.91.100 libopus
[Parsed_color_0 @ 0x7fe089815940] EOF timestamp not reliable
[Parsed_concat_2 @ 0x7fe088501980] Input link in0:v0 parameters (size 640x480, SAR 1:1) do not match the corresponding output link in0:v0 parameters (320x240, SAR 1:1)
[Parsed_concat_2 @ 0x7fe088501980] Failed to configure output pad on Parsed_concat_2
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0
[libopus @ 0x7fe08a810c00] 1 frames left in the queue on closing
Conversion failed!


  


• lavu/tx : require output argument to match input for inplace transforms

  26 février 2021, par Lynne

  lavu/tx : require output argument to match input for inplace transforms
  This simplifies some assembly code by a lot, by either saving a branch
  
  or saving an entire duplicated function.
  

  • [DH] libavutil/tx.h
  • [DH] libavutil/tx_template.c

• PHP FFMPEG match the Instagram Video Requirements

  19 février 2021, par Linesofcode

  This are the Instagram requirements in order to upload a video :

  


  - Container: MOV or MP4 (MPEG-4 Part 14), no edit lists, moov atom at the front of the file.
- Audio codec: AAC, 48khz sample rate maximum, 1 or 2 channels (mono or stereo).
- Video codec: HEVC or H264, progressive scan, closed GOP, 4:2:0 chroma subsampling.
- Frame rate: 23-60 FPS.
- Picture size:
  - Maximum columns (horizontal pixels): 1920
  - Minimum aspect ratio [cols / rows]: 4 / 5
  - Maximum aspect ratio [cols / rows]: 16 / 9
  - Video bitrate: VBR, 5Mbps maximum
- Audio bitrate: 128kbps
- Duration: 60 seconds maximum, 3 seconds minimum
- File size: 100MB maximum


  


  I'm using the https://github.com/PHP-FFMpeg/PHP-FFMpeg library and I'm able to get the metadata of the video this way :

  


  $ffprobe = \FFMpeg\FFProbe::create();
$video = $ffprobe->streams('my_sample_video.mp4')->videos()->first();
$audio = $ffprobe->streams('my_sample_video.mp4')->audios()->first();


  


  Printing $video & $audio returns respectively the following data :

  


  --- video ---
[index] => 0
[codec_name] => h264
[codec_long_name] => H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
[profile] => Baseline
[codec_type] => video
[codec_time_base] => 1/1200
[codec_tag_string] => avc1
[codec_tag] => 0x31637661
[width] => 848
[height] => 480
[coded_width] => 848
[coded_height] => 480
[has_b_frames] => 0
[sample_aspect_ratio] => 0:1
[display_aspect_ratio] => 0:1
[pix_fmt] => yuv420p
[level] => 31
[color_range] => tv
[color_space] => bt709
[color_transfer] => bt709
[color_primaries] => bt709
[chroma_location] => left
[refs] => 1
[is_avc] => 1
[nal_length_size] => 4
[r_frame_rate] => 25/1
[avg_frame_rate] => 25/1
[time_base] => 1/600
[start_pts] => 0
[start_time] => 0.000000
[duration_ts] => 57888
[duration] => 96.480000
[bit_rate] => 1436391
[bits_per_raw_sample] => 8
[nb_frames] => 2412

--- audio ---
[index] => 1
[codec_name] => aac
[codec_long_name] => AAC (Advanced Audio Coding)
[profile] => LC
[codec_type] => audio
[codec_time_base] => 1/44100
[codec_tag_string] => mp4a
[codec_tag] => 0x6134706d
[sample_fmt] => fltp
[sample_rate] => 44100
[channels] => 2
[channel_layout] => stereo
[bits_per_sample] => 0
[r_frame_rate] => 0/0
[avg_frame_rate] => 0/0
[time_base] => 1/44100
[start_pts] => 0
[start_time] => 0.000000
[duration_ts] => 4255744
[duration] => 96.502132
[bit_rate] => 62026
[max_bit_rate] => 64000
[nb_frames] => 4156


  


  Some things are easy to verify like the Video Codec, Audio Codec & Duration, but how to I manage to verify the rest ?

  


  I also noticed that all the MP4 & MOV video samples I use, the metadata of codec_long_name always returns "MPEG-4 part 10" and the requirement is "MPEG-4 Part 14".