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--- howto:ffmpeg [2020/12/06 17:22] – ffmpeg renamed to howto:ffmpeg andi
+++ howto:ffmpeg [2023/06/11 00:58] (current) – [audio channel mapping / repair] andi
@@ Line 36: / Line 36: @@
 make install </code>
-== audio channel mapping doku
+== HD-Master mit Loudnorm
-https://trac.ffmpeg.org/wiki/AudioChannelManipulation
-== silent fix
 <code>
-ffmpeg -ar 48000 -acodec pcm_s16le -f s16le -ac 2 -i <( dd if=/dev/zero ) -y -i not_silent/$file  -t 10.0 -c:v copy $file;
+ffmpeg -y \
-</code>
+-i /video/intros/XXX/intro.ts -analyzeduration 20000000 \
+-ss 1858.48 -t 3550.88 -i /video/fuse//XXX/YYY/ZZZ/uncut.ts -analyzeduration 20000000 \
-Oder "schöner" und ohne knacken:
+-i /video/intros/XXX/outro.ts \
+-filter_complex '
+  [0:a:0] loudnorm=i=-16:print_format=summary [norm-0-0];
+  [1:a:0] loudnorm=i=-16:print_format=summary [norm-1-0];
+  [2:a:0] loudnorm=i=-16:print_format=summary [norm-2-0];
-<code>
+  [0:v:0] [norm-0-0] [1:v:0] [norm-1-0] [2:v:0] [norm-2-0] concat=n=3:v=1:a=1 [vd] [audio0_mix];
-ffmpeg -i not_silent/$file -filter_complex "aevalsrc=c=2c:s=48000:0|0 [a]" -map 0:v -c:v copy -map "[a]" -c:a $audiocodec -shortest $outputfile
+  [vd] yadif=mode=0:parity=0, hqdn3d [v]
+' -analyzeduration 20000000/
+-map '[v]' -c:v:0 libx264 -pix_fmt yuv420p -crf:0 23 -profile:0 high -level:0 4.1
+-map '[audio0_mix]' -c:a:0 aac -b:a:0 192k -ar:a:0 48000 \
+-aspect 16:9 -movflags faststart -f mp4 /video/tmp/XXX/ZZZ-hd.mp4
 </code>
-$audiocodec z.B. mp2 bei Intros
-== metadata fix
-=== map metadata and fix spezific entry
+=== HD-Master mit Loudnorm, Pause rausschneiden
+ - Zeitstempel = *Sekunden.Frames*
+ - -t gibt Duration an, nicht Ende!
 <code>
-ffmpeg -i br0ken_licence/$file \
+ffmpeg -y \
-  -map_metadata 0 \
+-i /video/intros/XXX/intro.ts -analyzeduration 20000000 \
-  -metadata:s:a:0 LICENSE="Licensed to the public under https://creativecommons.org/licenses/by/2.0/de/ - http://media.ccc.de" \
+-ss 1858.48 -t 3550.88 -i /video/fuse//XXX/YYY/ZZZ/uncut.ts -analyzeduration 20000000 \
-  -c:a copy $file
+-ss 1858.48 -t 3550.88 -i /video/fuse//XXX/YYY/ZZZ/uncut.ts -analyzeduration 20000000 \
-</code>
+-i /video/intros/XXX/outro.ts \
+-filter_complex '
+  [0:a:0] loudnorm=i=-16:print_format=summary [norm-0-0];
+  [1:a:0] loudnorm=i=-16:print_format=summary [norm-1-0];
+  [2:a:0] loudnorm=i=-16:print_format=summary [norm-2-0];
+  [3:a:0] loudnorm=i=-16:print_format=summary [norm-3-0];
-=== copy metadata from another file
+  [0:v:0] [norm-0-0] [1:v:0] [norm-1-0] [2:v:0] [norm-2-0] [3:v:0] [norm-3-0] concat=n=4:v=1:a=1 [vd] [audio0_mix];
+  [vd] yadif=mode=0:parity=0, hqdn3d [v]
-<code>
+' -analyzeduration 20000000/
-ffmpeg -i $metadata_source -i $video_source -map 1 -c copy -map_metadata 0 $output_file
+-map '[v]' -c:v:0 libx264 -pix_fmt yuv420p -crf:0 23 -profile:0 high -level:0 4.1
+-map '[audio0_mix]' -c:a:0 aac -b:a:0 192k -ar:a:0 48000 \
+-aspect 16:9 -movflags faststart -f mp4 /video/tmp/XXX/ZZZ-hd.mp4
 </code>
-== one input, multiple format outputs
-. h264/aac flv rtmp output
-. theora/vorbis ogg output
-<code>
-ffmpeg -re -i 29c3-5266-de-en-proximax_telex_flashproxy_h264.mp4 -threads 0 -pix_fmt yuv420p -profile:v baseline -preset fast -tune zerolatency -c:v libx264 -strict -2 -c:a aac \
--f flv rtmp://localhost:1935/stream/saal1 \
--map 0 -c:v libtheora -c:a libvorbis -f ogg - | oggfwd localhost 8000 …
-</code>
-== Audiospur via Backup Audioaufnahme reparieren und in MP4 packen
-Sprache deu-backup im Tracker anlegen.
-Nochmal neu rausrendern lassen.
-einzelne Audiopuren vor oder nach Auphnic so umwandeln das Audio-Schnitt Tool wie z.B. Reaper was damit anfangen kann:
-  ffmpeg -i 5100-hd-audio2-auphonic.m4a -vn -c:a copy -bsf:a aac_adtstoasc 5100-hd-audio2-auphonic-echt.m4a
-  ffmpeg -i 5100-hd-audio2-auphonic.m4a -vn -c:a copy -bsf:a aac_adtstoasc 5100-hd-audio2-auphonic-echt.m4a
-Fertige Audiospur in Reaper rausrechnen, z.B. als Flac
-Audiospur wieder in Vortrag MP4 einpacken:
-<code>
-ffmpeg -threads 0 -i /video/encoded/fossgis16/5100-hd-primary-audio-only.mp4 -i 5100-audio-fixed.flac -map 0:0 -map 1:0 -map_metadata 0 -c:v copy -c:a:0 libfdk_aac -vbr 4 -ar:a:0 48000  -metadata:s:a:0 language=deu 5100-hd-fixed2.mp4
-</code>
-Alte Version
-<code>
-ffmpeg -threads 0 -i 5100-hd.mp4  -i 5100-audio-fixed.flac -map 0:0 -map 1:0 -map_metadata 1 5100-hd-fixed.mp4
-</code>
-Anmerkung: Geht auch mit MTS Datei (Transportstream mit H264 Video) der so aus der Consumer-Kamera auf die SD Karte fällt.
-Siehe auch: https://trac.ffmpeg.org/wiki/AudioChannelManipulation
-== Audiospur(en) und Videospur vertauscht
-<code>
-ffmpeg -i 5115-hd-broken.mp4 -map 0:v -map 0:a -c copy -map_metadata 0 5115-hd.mp4
-</code>
-== Translated Transcoding
-<code>
-ffmpeg -y -i rtmp://live.lan.c3voc.de/stream/mastermaster -aspect 16:9 -threads:0 0 -c:v libx264 -filter_complex '[0:v] yadif, scale=1920:1080 [v]; [0:a:0] pan=stereo|c0=FL [native]'  -map '[native]'  -map '[v]' -maxrate:v:0 2800k -bufsize:v:0 8192k -crf:0 18 -pix_fmt:0 yuv420p -profile:v:0 main -g:v:0 25 -preset:v:0 veryfast -ac 1 -y -f flv rtmp://live.lan.c3voc.de/push/master_translated_hd
-</code>
 == encoding snippets
@@ Line 133: / Line 93: @@
   -metadata title="<title>" \
     -metadata album="<album>" \
-    -metadata copyright="Licensed to the public under http://creativecommons.org/licenses/by-sa/3.0/" \
+    -metadata copyright="This work is licensed under a Creative Commons Attribution 4.0 International License. https://creativecommons.org/licenses/by/4.0/" \
   <output-file-name>
 </code>
@@ Line 146: / Line 106: @@
   -c:a libfdk_aac -b:a 192k -aspect 16:9 -metadata title="<title>" \
     -metadata album="<album>" \
-    -metadata copyright="Licensed to the public under http://creativecommons.org/licenses/by-sa/3.0/" \
+    -metadata copyright="This work is licensed under a Creative Commons Attribution 4.0 International License. https://creativecommons.org/licenses/by/4.0/" \
     -f mp4 -movflags faststart <output-file-name>
 </code>
@@ Line 198: / Line 158: @@
  -c:a mp3 -b:a 32k -ar:a 22050 -f mp4 -movflags faststart \
  /video/tmp/..../cut-101-proxy.mp4
+</code>
+== one input, multiple format outputs
+. h264/aac flv rtmp output
+. theora/vorbis ogg output
+<code>
+ffmpeg -re -i 29c3-5266-de-en-proximax_telex_flashproxy_h264.mp4 -threads 0 -pix_fmt yuv420p -profile:v baseline -preset fast -tune zerolatency -c:v libx264 -strict -2 -c:a aac \
+-f flv rtmp://localhost:1935/stream/saal1 \
+-map 0 -c:v libtheora -c:a libvorbis -f ogg - | oggfwd localhost 8000 …
+</code>
+== Translated Transcoding
+<code>
+ffmpeg -y -i rtmp://live.lan.c3voc.de/stream/mastermaster -aspect 16:9 -threads:0 0 -c:v libx264 -filter_complex '[0:v] yadif, scale=1920:1080 [v]; [0:a:0] pan=stereo|c0=FL [native]'  -map '[native]'  -map '[v]' -maxrate:v:0 2800k -bufsize:v:0 8192k -crf:0 18 -pix_fmt:0 yuv420p -profile:v:0 main -g:v:0 25 -preset:v:0 veryfast -ac 1 -y -f flv rtmp://live.lan.c3voc.de/push/master_translated_hd
+</code>
+== Audiospur via Backup Audioaufnahme reparieren und in MP4 packen
+Sprache deu-backup im Tracker anlegen.
+Nochmal neu rausrendern lassen.
+einzelne Audiopuren vor oder nach Auphnic so umwandeln das Audio-Schnitt Tool wie z.B. Reaper was damit anfangen kann:
+  ffmpeg -i 5100-hd-audio2-auphonic.m4a -vn -c:a copy -bsf:a aac_adtstoasc 5100-hd-audio2-auphonic-echt.m4a
+  ffmpeg -i 5100-hd-audio2-auphonic.m4a -vn -c:a copy -bsf:a aac_adtstoasc 5100-hd-audio2-auphonic-echt.m4a
+Fertige Audiospur in Reaper rausrechnen, z.B. als Flac
+Audiospur wieder in Vortrag MP4 einpacken:
+<code>
+ffmpeg -threads 0 -i /video/encoded/fossgis16/5100-hd-primary-audio-only.mp4 -i 5100-audio-fixed.flac -map 0:0 -map 1:0 -map_metadata 0 -c:v copy -c:a:0 libfdk_aac -vbr 4 -ar:a:0 48000  -metadata:s:a:0 language=deu 5100-hd-fixed2.mp4
+</code>
+Alte Version
+<code>
+ffmpeg -threads 0 -i 5100-hd.mp4  -i 5100-audio-fixed.flac -map 0:0 -map 1:0 -map_metadata 1 5100-hd-fixed.mp4
+</code>
+Anmerkung: Geht auch mit MTS Datei (Transportstream mit H264 Video) der so aus der Consumer-Kamera auf die SD Karte fällt.
+Siehe auch: https://trac.ffmpeg.org/wiki/AudioChannelManipulation
+== Audiospur(en) und Videospur vertauscht
+<code>
+ffmpeg -i 5115-hd-broken.mp4 -map 0:v -map 0:a -c copy -map_metadata 0 5115-hd.mp4
+</code>
+== audio channel mapping / repair
+https://trac.ffmpeg.org/wiki/AudioChannelManipulation
+=== mono mixdown
+  ffmpeg -i 27-hd-orig.mp4 -codec:v copy -map_metadata 0 -ac 1 -ab 128k 27-hd.mp4
+=== silent fix
+<code>
+ffmpeg -ar 48000 -acodec pcm_s16le -f s16le -ac 2 -i <( dd if=/dev/zero ) -y -i not_silent/$file  -t 10.0 -c:v copy $file;
+</code>
+Oder "schöner" und ohne knacken:
+<code>
+ffmpeg -i not_silent/$file -filter_complex "aevalsrc=c=2c:s=48000:0|0 [a]" -map 0:v -c:v copy -map "[a]" -c:a $audiocodec -shortest $outputfile
+</code>
+$audiocodec z.B. mp2 bei Intros
+== metadata fix
+=== map metadata and fix specific entry
+<code>
+ffmpeg -i br0ken_licence/$file \
+  -map_metadata 0 \
+  -metadata:s:a:0 LICENSE="This work is licensed under a Creative Commons Attribution 4.0 International License. https://creativecommons.org/licenses/by/4.0/" \
+  -c:a copy $file
+</code>
+=== copy metadata from another file
+<code>
+ffmpeg -i $metadata_source -i $video_source -map 1 -c copy -map_metadata 0 $output_file
 </code>
@@ Line 214: / Line 272: @@
     " -map '[v]' -c:v:0 libx264 -pix_fmt yuv420p -bufsize:0 8192k -crf:0 20 -minrate:0 100k -maxrate:0 5000k -profile:0 main -level:0 4.0 -threads 8 -map '[a]' -c:a:0 libfdk_aac -b:a:0 192k -ac:a:0 1 -ar:a:0 48000 -aspect 16:9 -f mp4 50-hd-camonly-cut.mp4
-=== HD-Master mit Loudnorm
-<code>
-ffmpeg -y \
--i /video/intros/XXX/intro.ts -analyzeduration 20000000 \
--ss 1858.48 -t 3550.88 -i /video/fuse//XXX/YYY/ZZZ/uncut.ts -analyzeduration 20000000 \
--i /video/intros/XXX/outro.ts \
--filter_complex '
-  [0:a:0] loudnorm=i=-16:print_format=summary [norm-0-0];
-  [1:a:0] loudnorm=i=-16:print_format=summary [norm-1-0];
-  [2:a:0] loudnorm=i=-16:print_format=summary [norm-2-0];
-  [0:v:0] [norm-0-0] [1:v:0] [norm-1-0] [2:v:0] [norm-2-0] concat=n=3:v=1:a=1 [vd] [audio0_mix];
-  [vd] yadif=mode=0:parity=0, hqdn3d [v]
-' -analyzeduration 20000000/
--map '[v]' -c:v:0 libx264 -pix_fmt yuv420p -crf:0 23 -profile:0 high -level:0 4.1
--map '[audio0_mix]' -c:a:0 aac -b:a:0 192k -ar:a:0 48000 \
--aspect 16:9 -movflags faststart -f mp4 /video/tmp/XXX/ZZZ-hd.mp4
-</code>
-=== HD-Master mit Loudnorm, Pause rausschneiden
- - Zeitstempel = *Sekunden.Frames*
- - -t gibt Duration an, nicht Ende!
-<code>
-ffmpeg -y \
--i /video/intros/XXX/intro.ts -analyzeduration 20000000 \
--ss 1858.48 -t 3550.88 -i /video/fuse//XXX/YYY/ZZZ/uncut.ts -analyzeduration 20000000 \
--ss 1858.48 -t 3550.88 -i /video/fuse//XXX/YYY/ZZZ/uncut.ts -analyzeduration 20000000 \
--i /video/intros/XXX/outro.ts \
--filter_complex '
-  [0:a:0] loudnorm=i=-16:print_format=summary [norm-0-0];
-  [1:a:0] loudnorm=i=-16:print_format=summary [norm-1-0];
-  [2:a:0] loudnorm=i=-16:print_format=summary [norm-2-0];
-  [3:a:0] loudnorm=i=-16:print_format=summary [norm-3-0];
-  [0:v:0] [norm-0-0] [1:v:0] [norm-1-0] [2:v:0] [norm-2-0] [3:v:0] [norm-3-0] concat=n=4:v=1:a=1 [vd] [audio0_mix];
-  [vd] yadif=mode=0:parity=0, hqdn3d [v]
-' -analyzeduration 20000000/
--map '[v]' -c:v:0 libx264 -pix_fmt yuv420p -crf:0 23 -profile:0 high -level:0 4.1
--map '[audio0_mix]' -c:a:0 aac -b:a:0 192k -ar:a:0 48000 \
--aspect 16:9 -movflags faststart -f mp4 /video/tmp/XXX/ZZZ-hd.mp4
-</code>
 === Icecast-Audio mit ffmpeg