After the successfull Youtube Clone Requirement installation for a client, uploaded a test video and got a convert error.

So verified following convert command on the server and got “File for preset ‘hq’ not found”

[root@ns530702 ~]# /usr/bin/ffmpeg -y -i '/var/www/vhosts/domain/video/test.avi' -acodec libfaac -ab 96k -vcodec libx264 -vpre hq -crf 22 -coder 1 -threads 0 -b 500k /var/www/vhosts/domain//flvideo/4ca4238a0b/15159863161117371024.mp4 2>&1
ffmpeg version 3.4.1-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 6.4.0 (Debian 6.4.0-10) 20171112
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Input #0, avi, from '/var/www/vhosts/domain/video/test.avi':
  Duration: 00:04:39.03, start: 0.000000, bitrate: 303 kb/s
    Stream #0:0: Video: h264 (Main) (H264 / 0x34363248), yuv420p(progressive), 320x180 [SAR 1:1 DAR 16:9], 92 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc
    Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, s16p, 192 kb/s
File for preset 'hq' not found

Searched with the error ‘File for preset ‘hq’ not found’ and got a solution from ubuntuforums.org.

Try something like the following for the x264 part of your commandline:

-vcodec libx264 -preset slow -crf 22

The script he was using vShare Youtube Clone and I updated the video conversion command at include/settings/video_conversion.php

Old code was

$cmd_mp4 = "$config[ffmpeg] -y -i '$video_src' -acodec libfaac -ab 96k -vcodec libx264 -vpre hq -crf 22 -coder 1 -threads 0 -b 500k $video_flv 2>&1";

Updated code

$cmd_mp4 = "$config[ffmpeg] -y -i '$video_src' -acodec libfaac -ab 96k -vcodec libx264 -vpre hq -crf 22 -coder 1 -threads 0 -b 500k $video_flv 2>&1";

Tried with new code and got another error

[root@ns530702 ~]# /usr/bin/ffmpeg -y -i '/var/www/vhosts/domain/video/test.avi' -acodec libfaac -ab 96k -vcodec libx264 -preset slow -crf 22 -coder 1 -threads 0 -b 500k /var/www/vhosts/domain/flvideo/4ca4238a0b/15159863161117371024.mp4 2>&1
ffmpeg version 3.4.1-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 6.4.0 (Debian 6.4.0-10) 20171112
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Input #0, avi, from '/var/www/vhosts/domain/video/test.avi':
  Duration: 00:04:39.03, start: 0.000000, bitrate: 303 kb/s
    Stream #0:0: Video: h264 (Main) (H264 / 0x34363248), yuv420p(progressive), 320x180 [SAR 1:1 DAR 16:9], 92 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc
    Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, s16p, 192 kb/s
Please use -b:a or -b:v, -b is ambiguous
Unknown encoder 'libfaac'

Updated convert code again.

Replaced -b with -b:a

Replaced libfaac with aac -strict -2. Before I fixed the Clip Bucket error with this solution.

Here is the final code. Tested with new convert command and video conversion working fine now.

$cmd_mp4 = "$config[ffmpeg] -y -i '$video_src' -acodec aac -strict -2 -ab 96k -vcodec libx264 -preset slow -crf 22 -coder 1 -threads 0 -b:a 500k $video_flv 2>&1";