Modified encode to be useful for multiple casts.
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4d09fd9ce3
commit
4300e276c0
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@ -11,3 +11,4 @@
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*.mp3
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*.m4a
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*.chapters.txt
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*.conf
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88
encode.bash
88
encode.bash
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@ -28,17 +28,25 @@
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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function clean {
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if [ -f "$1" ]
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then
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echo "Cleaning existing file, $1."
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rm $1
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fi
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}
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if [ -z "$1" ]
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then
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echo "Provide a cast type!"
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echo "$0 <cast type> <slug> [date]"
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echo "$0 <cast config> <slug> [date]"
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exit 1
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fi
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type=$1
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config=$1
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if [ -z "$2" ]
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then
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echo "Provide a slug!"
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echo "$0 <cast type> <slug> [date]"
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echo "$0 <cast config> <slug> [date]"
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exit 2
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fi
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slug=$2
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@ -52,21 +60,35 @@ else
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year=$(date +%Y -d $3)
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post_date=$(date +%Y/%m/%d -d $3)
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fi
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echo $date
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# assemble common values for tags/comments
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title="The Command Line ${date}"
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artist="Thomas Gideon"
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cover="${HOME}/Dropbox/Public/color_cover_art.jpg"
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album="The Command Line"
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genre="Podcast"
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url="http://thecommandline.net/${post_date}/${slug}/"
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copyright="http://creativecommons.org/licenses/by-sa/3.0/us"
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comment="Weekly ${type} cast. Email to feedback@thecommandline.net. Show notes and license information for this episode at ${url}."
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# load info from cast specific config file
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. $config
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if [ -z "${file_prefix}" ]
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then
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echo "${config} must set file_prefix."
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exit 1
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fi
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echo "Info for tagging."
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echo "Title: $title"
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echo "Artist: $artist"
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echo "Cover: $cover"
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echo "Album: $album"
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echo "Genre: $genre"
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echo "URL: $url"
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echo "Copyright: $copyright"
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echo "Comment: $comment"
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base_file=${file_prefix}${date}
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echo ""
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echo "Encoding MP3, ${base_file}.mp3 at ${mp3_bitrate} kbps."
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clean "${base_file}.mp3"
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echo ""
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# encode lossy, MP3, adding ID3v2 tags for everything
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# *except* cover art
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lame -b 112 \
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lame -b ${mp3_bitrate} \
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--cbr \
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--tt "${title}" \
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--ta "${artist}" \
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@ -76,15 +98,19 @@ lame -b 112 \
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--tg "${genre}" \
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--id3v2-only \
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--noreplaygain \
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cmdln.net_${date}.wav \
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cmdln.net_${date}.mp3
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${base_file}.wav \
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${base_file}.mp3
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# lame package from Lucid lacks the --ti switch for image
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# found eyed3 via a web search
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eyeD3 --add-image ${cover}:FRONT_COVER \
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--set-text-frame="TCOP:${copyright}" \
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cmdln.net_${date}.mp3
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${base_file}.mp3
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echo ""
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echo "Encoding ${base_file}.flac."
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clean "${base_file}.flac"
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echo ""
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# lossless encoding
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flac \
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--picture="|image/jpeg|||${cover}" \
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@ -97,14 +123,18 @@ flac \
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--tag=comment="${comment}" \
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--tag=url="${url}" \
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--tag=copyright="${copyright}" \
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cmdln.net_${date}.wav
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${base_file}.wav
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echo ""
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echo "Encoding ${base_file}.m4a at ${aac_quality}."
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clean "${base_file}.m4a"
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echo ""
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# AAC encoding, lossy
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# docs recommend against setting bandwidth and bitrate setting
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# doesn't seem to result in the desired quality as tweaking
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# the quality setting (max 500)--200 was arrived at by iteratively
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# encoding the same raw audio and subjective listening to the results
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faac -q 200 \
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faac -q ${aac_quality} \
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-o cmdln.net_${date}.m4a \
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--title "${title}" \
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--artist "${artist}" \
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@ -114,23 +144,27 @@ faac -q 200 \
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--writer "${artist}" \
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--comment "${comment}" \
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--cover-art "${cover}" \
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cmdln.net_${date}.wav
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${base_file}.wav
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# put together the just-so input file for mp4chaps
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echo "00:00:00.000 Start" > \
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cmdln.net_${date}.chapters.txt
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grep "{{offset|" ~/Documents/cmdln_notes/weekly_archive/${date}.notes | \
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${base_file}.chapters.txt
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grep "{{offset|" ${aac_notes_path}/${date}.notes | \
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sed -e "s/.*offset|\(.*\)}}.*|\(.*\)}}.*/\1 \2/" >> \
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cmdln.net_${date}.chapters.txt
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${base_file}.chapters.txt
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# write the chapter marks to the AAC/MP4 file
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mp4chaps -o -z -i cmdln.net_${date}.m4a
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mp4chaps -o -z -i ${base_file}.m4a
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echo ""
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echo "Encoding ${base_file}.ogg at quality ${ogg_quality}."
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clean "${base_file}.ogg"
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echo ""
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# encode the Ogg Vorbis from the flac copies the tags/comments
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# already set into the flac file except the cover art;
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# using metaflac, can encode the binary block in flac
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# per the latest recommendations from Xiph for cover art
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oggenc \
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-q 5 \
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--comment=METADATA_BLOCK_PICTURE="$(metaflac --export-picture-to=- cmdln.net_${date}.flac| base64 -w 0)" \
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cmdln.net_${date}.flac
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-q ${ogg_quality} \
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--comment=METADATA_BLOCK_PICTURE="$(metaflac --export-picture-to=- ${base_file}.flac| base64 -w 0)" \
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${base_file}.flac
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