diff options
Diffstat (limited to 'localvideowebencode')
| -rwxr-xr-x | localvideowebencode | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/localvideowebencode b/localvideowebencode index 4cc654e..8f43b52 100755 --- a/localvideowebencode +++ b/localvideowebencode @@ -21,6 +21,7 @@ # http://diveintohtml5.org/video.html # http://camendesign.com/code/video_for_everybody # http://www.streaminglearningcenter.com/articles/so-you-want-to-get-to-know-h264.html +# http://www.penguinproducer.com/2012/01/ladspa-noise-removal/ # # Possible flashplayers: # http://www.internetmarketingnotes.com/2010/07/free-embeddable-flash-video-flv-players-for-commercial-use/ @@ -63,7 +64,11 @@ html favoring open formats with optional non-JavaScript Flash fallback. (default: medium) --webmpreset WebM target preset: 360p 720p 720p50_60 etc. (default: profile-related or none) - --audio Audio style: music speech silence + --audio Audio style: + channels compress normalize limit + music max 2 X X + speech 1 X X X + silence 0 (default: none - use input channel count) --stem Stem of output filenames, optionally with path (default: basename of last input file) @@ -247,11 +252,17 @@ bitrate_aac=96 case "$audio" in music) channels=2 + # limit (i.e. avoid peaks "clipping") + _melt_audio_filters="-filter ladspa.1077" ;; speech) channels=1 bitrate_vorbis=48 bitrate_aac=64 + # expand and compress (i.e. lower volume on silent and loud passages) + _melt_audio_filters_early="-filter ladspa.1075 -filter ladspa.1073" + # limit (i.e. avoid peaks "clipping") + _melt_audio_filters="-filter ladspa.1077" ;; silence) channels=0 @@ -277,12 +288,20 @@ _melt_audio="${channels:+ac=$channels}" _melt_vorbis="$_melt_audio acodec=libvorbis ab=$(($channels*$bitrate_vorbis))k" _melt_aac="$_melt_audio acodec=aac ab=$(($channels*$bitrate_aac))k" +# resolve EBU R128 audio normalizing +# TODO: normalize each infile separately when xml fed as infile keeps sync +if [ -n "$melt_recent" ] && [ -n "$channels" ]; then + $melt -group $_melt_in $infiles -group $_melt_audio_filters_early -filter loudness -consumer xml:$stem.xml $_melt_audio video_off=1 all=1 + _melt_loudness="$(perl -ne 'm!<property name="results">([^<]+)</property>! and print $1' $stem.xml)" + rm $stem.xml +fi + ## Theora/Vorbis/Ogg -$melt -group $_melt_in $infiles -group $filters -consumer avformat:"$stem.ogv" $_melt_ogg $_melt_vorbis $_melt_out +$melt -group $_melt_in $infiles -group ${channels:+$_melt_audio_filters_early${_melt_loudness:+ -filter loudness results="$_melt_loudness"} $_melt_audio_filters }$filters -consumer avformat:"$stem.ogv" $_melt_ogg $_melt_vorbis $_melt_out ## H.264/AAC/MP4 [ -z "$bitrate" ] || $melt -group $_melt_in $infiles -group $filters -consumer avformat:/dev/null properties=x264-medium-pass1 $_melt_h264 $_melt_out -$melt -group $_melt_in $infiles -group $filters -consumer avformat:"$stem.mp4" ${bitrate:+pass=2} $_melt_h264 $_melt_aac $_melt_out +$melt -group $_melt_in $infiles -group ${channels:+$_melt_audio_filters_early${_melt_loudness:+ -filter loudness results="$_melt_loudness"} $_melt_audio_filters }$filters -consumer avformat:"$stem.mp4" ${bitrate:+pass=2} $_melt_h264 $_melt_aac $_melt_out if [ -z "$melt_recent" ]; then mv "$stem.mp4" "$stem.mp4"~ qt-faststart "$stem.mp4"~ "$stem.mp4" @@ -291,7 +310,7 @@ fi ## VP8/Vorbis/WebM # TODO: use two-pass when supported by melt -$melt -group $_melt_in $infiles -group $filters -consumer avformat:"$stem.webm" properties=webm $_melt_webm $_melt_vorbis $_melt_out +$melt -group $_melt_in $infiles -group ${channels:+$_melt_audio_filters_early${_melt_loudness:+ -filter loudness results="$_melt_loudness"} $_melt_audio_filters }$filters -consumer avformat:"$stem.webm" properties=webm $_melt_webm $_melt_vorbis $_melt_out ## JPEG preview ffmpegthumbnailer -s0 -i "$stem.mp4" -o "$stem.jpg" |