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• Downloading a video from youtube and convert to MP4

  26 mars 2019, par Ghomrani Ilyes

  I created a script to download a youtube video and extract an images from it for each period

  screenshotvideo

  def screenshotvideo(url, interval, id, fullduration, title, quality):
  
      interval = int(interval)
  
      parsed_t = isodate.parse_duration(fullduration)
  
      durationseconds=parsed_t.total_seconds()
  
      iterat=int(durationseconds/int(interval))
  
      for i in range(0, iterat):
  
          print(str(id))
  
          print(str(i))
  
          print(str(i*interval))
  
          part(url, time.strftime('%H:%M:%S', time.gmtime(int(i*interval))), "00:00:01", title+"-"+str(id), quality)

  part

  def part(url, starttime, duration, name, quality):
  
      f = os.popen("ffmpeg $(youtube-dl -f "+quality+" -g '"+url+"' | sed 's/.*/-ss "+starttime+" -i &/') -t "+duration+" -c copy "+name+".mp4")
  
      now = f.read()
  
      print(now)
  
      f = os.popen("ffmpeg -i "+name+".mp4 -ss 00:00:00 -vframes 1 "+name+".jpg")
  
      now = f.read()
  
      print(now)
  
      f = os.popen("rm -rf "+name+".mp4")
  
      now = f.read()
  
      print(now)

  so i got the folowing error in the first ffmpeg command

  [mp4 @ 0x55d537f64240] Could not find tag for codec vp8 in stream #0, codec not currently supported in container.

  Could not write header for output file #0 (incorrect codec parameters ?) : Invalid argument

• How can I remove downloaded video file after merging video and audio ?

  11 mai 2019, par Locke Jet

  I downloaded 1080p video from youtube using youtube-dl. Video file (.f137.mp4) and audio files (f140.m4a) were downloaded. Them ffmpeg merged the video file and the audio file to mp4 file(.mp4). I want to keep the .f140.m4a file and the .mp4 file, while remove the f137.mp4 file. How can I do ?

  I tried the —exec option in the youtube-dl, but it failed.

  These were my commands :

  root@OMV:~/youtube-dl# cat dl-test.sh
  
  DL_DIR="/srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007"
  
  ALBUM="Test"
  
  mkdir -p "$DL_DIR/$ALBUM"
  
  youtube-dl --batch-file  /root/youtube-dl/url-test.list --download-archive /root/youtube-dl/archive-test.list                           \
  
  -f  'bestvideo[ext=mp4]+bestaudio[ext=m4a]/bestvideo+bestaudio'                                 \
  
  --write-sub --embed-sub --all-subs                                                              \
  
  --embed-thumbnail --add-metadata                                                                \
  
  -o "$DL_DIR/$ALBUM/%(title)s.%(ext)s"                                                           \
  
  --exec "rm "$(ls {} | cut -d . -f1)""

  The result were :

  root@OMV:~/youtube-dl# ./dl-test.sh
  
  ls: cannot access '{}': No such file or directory
  
  ...
  
  [ffmpeg] Merging formats into "/srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test/UpTown Spot.mp4"
  
  ...
  
  [atomicparsley] Adding thumbnail to "/srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test/UpTown Spot.mp4"
  
  [exec] Executing command: rm  '/srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test/UpTown Spot.mp4'

  The .mp4 file was deleted, the .f137.mp4 file was still there. I got the opposite result.

  root@OMV:~/youtube-dl# ls '/srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test'
  
  UpTown Spot.f137.mp4  UpTown Spot.f140.m4a

  Update 1 :
  I changed to

  --exec "rm "$(ls {} -1 | sed -n '/\.f[0-9]*\.mp4$/p')""

  It still remove the .mp4 file. The output was :

  root@OMV:~/youtube-dl# echo "" > "/root/youtube-dl/archive-test.list"
  
  root@OMV:~/youtube-dl# ./dl-test.sh
  
  ls: cannot access '{}': No such file or directory
  
  ...
  
  [download] /srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test/UpTown Spot.mp4 has already been downloaded and merged
  
  ...
  
  [exec] Executing command: rm  '/srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test/UpTown Spot.mp4'

  Then changed it into :

  --exec "rm "$(ls -1 | sed -n '/\.f[0-9]*\.mp4$/p')""

  The ouput was almost the same :

  root@OMV:~/youtube-dl# ./dl-test.sh
  
  ...
  
  [exec] Executing command: rm  '/srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test/UpTown Spot.mp4'

  I tested the normal expression in SHELL, it worked :

  root@OMV:~/youtube-dl# cd /srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test
  
  root@OMV:/srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test# ls "$(ls  /srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test | sed -n '/\.f[0-9]*\.mp4$/p')"
  
  UpTown Spot.f137.mp4
  
  root@OMV:/srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test# rm "$(ls  /srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test | sed -n '/\.f[0-9]*\.mp4$/p')"

  But the similar command running in the youtube-dl —exec option failed !

  Update 2 :
  It seemed that the cmd after pipeline would not be executed.

  root@OMV:~/youtube-dl# ./dl-test.sh
  
  + DL_DIR=/srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007
  
  + ALBUM=Test
  
  + mkdir -p /srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test
  
  + youtube-dl --batch-file /root/youtube-dl/url-test.list --download-archive /root/youtube-dl/archive-test.list -f 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/bestvideo+bestaudio' --write-sub --embed-sub --all-subs --embed-thumbnail --add-metadata -o '/srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test/%(title)s.%(ext)s' --exec 'ls | grep mp4'
  
  ...
  
  [exec] Executing command: ls | grep mp4 '/srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test/UpTown Spot.mp4'
  
  Binary file /srv/dev-disk-by-id-ata-QEMU_HARDDISK_QM00007/Test/UpTown Spot.mp4 matches
  
  ls: write error: Broken pipe

• Combining Youtube-dl and FFMPEG not working

  13 juillet 2019, par user1029296

  I am trying to download 5 second samples for a list of youtube video. The traditional approach is to download the entire file with "youtube-dl" and then use "ffmpeg" to split it however you want it.

  I am trying to use the following method : https://github.com/ytdl-org/youtube-dl/issues/622#issuecomment-162337869

  It does work when I include the variables in the command, for example :

  ffmpeg -ss 0 -i $(youtube-dl -f best --get-url https://www.youtube.com/watch?v=ySVi-0RS5vI&t=5s) -t 10 -c:v copy -c:a copy title2.mp4

  However, I am having issues trying to automate the system. Specifically, I would like ffmpeg and youtube-dl to read a file and use the values. I created the file "youtube.txt" which includes the following codes :

  440.8,https://www.youtube.com/watch?v=0-4wOE_DNeA,661.2,881.6,0-4wOE_DNeA
  
  330,https://www.youtube.com/watch?v=0-AMWW6tHzw,495,660,0-AMWW6tHzw
  
  509.2,https://www.youtube.com/watch?v=0-Rmto2rgMw,763.8,1018.4,0-Rmto2rgMw
  
  427.6,https://www.youtube.com/watch?v=0-U53qm45cA,641.4,855.2,0-U53qm45cA
  
  320.4,https://www.youtube.com/watch?v=0-dja9Ys4Sg,480.6,640.8,0-dja9Ys4Sg
  
  343.6,https://www.youtube.com/watch?v=0-g_PulsqtM,515.4,687.2,0-g_PulsqtM
  
  415.6,https://www.youtube.com/watch?v=0-nniRyn7dU,623.4,831.2,0-nniRyn7dU
  
  431.2,https://www.youtube.com/watch?v=006BQU3BFxw,646.8,862.4,006BQU3BFxw

  I am using the following command :

  parallel -j 6 --colsep ',' ffmpeg -ss {1} -i $(youtube-dl -f best --get-url {2}) --t 5 -c:v copy -c:a copy {5} :::: youtube.txt

  However, I get the following errors :

  ERROR: '{2}' is not a valid URL. Set --default-search "ytsearch" (or run  youtube-dl "ytsearch:{2}" ) to search YouTube
  
  --t: No such file or directory

  Would you mind helping me ?

  Thanks !