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Add extra_crop_cover to All Odd Cover Widths

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When attempting to convert
https://www.audible.com/pd/Stephen-Fry-Presents-a-Selection-of-Anton-Chekhovs-Short-Stories-Audiobook/B0036GPPWS
using this tool and chaptered mode, ffmpeg fails out with

[libx264 @ 0x5588ef28d780] width not divisible by 2 (483x500)
Error initializing output stream 0:1 -- Error while opening encoder
for output stream #0:1 - maybe incorrect parameters such as bit_rate,
rate, width or height
Conversion failed!

This is because the cover file embedded in the downloaded mp4 file
from Audible has the dimensions 483x500. Found the extra_crop_cover
that's currently being used only for covers from the Audible CLI
tool and extended the script to instead check the dimensions of the
cover file and include the extra_crop_cover anytime the cover has an
odd width.
This commit is contained in:
Nate Bohman 2021-11-09 11:36:23 -07:00
parent c6e8a06f10
commit ab91343dd5
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GPG Key ID: C10546A54ABA1CE5
1 changed files with 12 additions and 7 deletions
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AAXtoMP3
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@ -751,7 +751,6 @@ do
fi
# Grab the cover art if available.
cover_file="${output_directory}/cover.jpg"
extra_crop_cover=''
if [ "${continue}" == "0" ]; then
if [ "${audibleCli}" == "1" ]; then
# We have a better quality cover file, copy it.
@ -759,12 +758,6 @@ do
log "Copy cover file to ${cover_file}..."
fi
cp "${extra_cover_file}" "${cover_file}"
# We now set a variable, ${extra_crop_cover}, which contains an additional
# ffmpeg flag. It crops the cover so the width and the height is divisible by two.
# Since the standard (in the aax file) image resolution is 512, we set the flag
# only if we use a custom cover art.
extra_crop_cover='-vf crop=trunc(iw/2)*2:trunc(ih/2)*2'
else
# Audible-cli not used, extract the cover from the aax file
if [ "$((${loglevel} > 1))" == "1" ]; then
@ -774,6 +767,18 @@ do
fi
fi
extra_crop_cover=''
cover_width=$(ffprobe -i "${cover_file}" 2>&1 | grep -Po "[0-9]+(?=x[0-9]+)")
if [ "$(( ${cover_width} % 2 ))" == "1" ]; then
if [ "$((${loglevel} > 1))" == "1" ]; then
log "Cover ${cover_file} has odd width ${cover_width}, setting extra_crop_cover to make even."
fi
# We now set a variable, ${extra_crop_cover}, which contains an additional
# ffmpeg flag. It crops the cover so the width and the height is divisible by two.
# Set the flag only if we use a cover art with an odd width.
extra_crop_cover='-vf crop=trunc(iw/2)*2:trunc(ih/2)*2'
fi
# -----
# If mode=chaptered, split the big converted file by chapter and remove it afterwards.
# Not all audio encodings make sense with multiple chapter outputs (see options section)