events:divocptt

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events:divocptt [2020/07/28 12:06] – Created from the form at events:event derpeterevents:divocptt [2020/10/04 21:31] (current) – danimo
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 voc-verantwortlicher : derpeter voc-verantwortlicher : derpeter
 ort                  : internet ort                  : internet
-internetseite_url    : di.c3voc.de+internetseite_url    : http://di.c3voc.de/ptt:start
 begin                : 2020-09-04 begin                : 2020-09-04
 ende                 : 2020-09-06 ende                 : 2020-09-06
-kontakt              : unklar +kontakt              : stb, jtbx 
-email_mail           : @@E-Mail@@+email_mail           : divoc-ptt@hamburg.ccc.de
 raeume               : 1 raeume               : 1
-cases                : @@Case@@ +cases                :  
-transport            :             # kommt via … von … z.B. "per K&N Stückgut aus Berlin (Lager)" +transport            :  # kommt via … von … z.B. "per K&N Stückgut aus Berlin (Lager)" 
-aufbautag            : @@Aufbautag@@ +aufbautag            : 2020-09-04 
-abbautag             : @@Abbautag@@ +abbautag             : 2020-09-06 
-ruecktransport       :             # Abtransport via … nach …  z.B. "per Spedition nach München ($Konferenz)"+ruecktransport       :  # Abtransport via … nach …  z.B. "per Spedition nach München ($Konferenz)"
 audio_hardware       : ja audio_hardware       : ja
 streaming            : ja streaming            : ja
-planungstool         : ? +planungstool         : Pretalx 
-schedule_url         : +schedule_url         : https://talks.mrmcd.net/ptt/schedule/export/schedule.xml
 publizierung         : media.ccc.de publizierung         : media.ccc.de
-media_url            : # https://media.ccc.de/c/divocptt @@media@@ +media_url            :  # https://media.ccc.de/c/divocptt @@media@@ 
-youtube_url          : # https://www.youtube.com/playlist?list= @@youtube@@ +youtube_url          :  # https://www.youtube.com/playlist?list= @@youtube@@ 
-tib-av_url           : # https://av.tib.eu/series/ @@tib-av@@+tib-av_url           :  # https://av.tib.eu/series/ @@tib-av@@
 aufzeichnungliz_liz  : CC BY 4.0 aufzeichnungliz_liz  : CC BY 4.0
 streamliz_liz        : CC BY 4.0 streamliz_liz        : CC BY 4.0
-status_st            : request +status_st            : confirmed 
-wekan_url            :+wekan_url            : 
 ---- ----
 +
 +
 +== Special Post-Production Sauce due to Separate Translation
 +
 +1. Go to tracker, pick ticket
 +2. Click the link for the according talk from https://streaming.media.ccc.de/divoc_ptt/relive, click the "download" link
 +3. Make sure you have the translator audio for the respective time. See https://wiki.c3lingo.org/translation-recordings
 +4. Use ffmpeg to cut the mp4 to the required length without re-encoding: ''ffmpeg -i muxed.mp4 -ss <start> -to <end> -c copy id-<hd>-orig.mp4'', where ''<start>'' and ''<end>'' are timestamps and <id> is the talk's id in the tracker. Check the final length (ffmpeg output or run ffprobe). Note that this method can only split at keyfames, so the final result might be a bit off. If that's not tolerable, you will have to do a reencode (instead of ''-c copy'', use ''-c:a copy -c:v libx264 -bufsize:0 8192k -minrate:0 100k -maxrate:0 2000k -crf:0 18 -profile:0 main'').
 +5. Open the clip in kdenlive or shotcut. open the translation right along with it in a separate audio track. and align the translation so it fits with the original (delay it by a few secs so it feels natural, live translations are never instant). Fit the audio exactly with the video in terms of length, and mute the video's audio. Next, click Render/Export and make sure to only export the audio, as aac/m4a. name the file ''<id>-hd-tl.m4a''. (This can also be done with pure ffmpeg if you feel confident enough)
 +6. Merge translation to the original video: ''ffmpeg -i <hd>-orig.mp4 -i <id>-hd-tl.m4a -c copy -map 0:v -map 0:a -map 1:a -shortest <id>-hd.mp4''
 +7. Verify with ffprobe that there now are one video and two audio tracks on the new file.
 +8. Copy the new file to ''releasing.c3voc.de:/video/tmp/divoc_ptt/repair''
 +9. Set the ''Record.SourceReplacement'' property to ''<id>-hd.mp4''
 +10. Set the recording ticket to state "Recorded".
 +11. Check the final result of the master hd ticket. Set the correct languages (which is first, which is second), and check that intro/outro are there, and that levelling and ducking (for the translation) has been applied.
 +
 +<WRAP center round important 70%>
 +Do not apply any leveling or ducking by yourself. The encoding process will take care of that and apply leveling for both languages as well as ducking for the translation.
 +</WRAP>
 +
 +
 +
 +
 +
  • events/divocptt.1595930783.txt.gz
  • Last modified: 2020/07/28 12:06
  • by derpeter