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ffmpeg - how to split a .aac audio-file into small parts, exactly 4.00 seconds in size (so ignoring keyframes)

0

How can I split the audio file .aac into small parts of exactly 4.0 seconds, ie. with ignoring keyframes?

The original video file was in .mp4 format. From this video file I got an .aac audio file. But the new parts of the split audio file always have 3.4 seconds and I need 4.0 seconds of audio. The problem is probably in key frames.

Thanks.

cd $DIR_IN
for file in *.mp4
do
 echo "Extracting the whole audio-track from $file to $DIR_TMP/$file%.mp4.aac"
 ffmpeg -i "$file" -vn -acodec copy $DIR_TMP/"$file%.mp4.aac"

 echo "Splitting the large video-file $file to a smaller audio-files '$file%.mp4'XXX.aac"
 ffmpeg -i $DIR_TMP/"$file%.mp4.aac" -c copy -f segment -segment_time 4 $DIR_TMP/"$file%.mp4%03d.aac"

 rm -f $DIR_TMP/"$file%.mp4.aac"
done

bash ffmpeg

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asked 2 hours ago

s3n0s3n0

101

New contributor

s3n0 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

0

How can I split the audio file .aac into small parts of exactly 4.0 seconds, ie. with ignoring keyframes?

The original video file was in .mp4 format. From this video file I got an .aac audio file. But the new parts of the split audio file always have 3.4 seconds and I need 4.0 seconds of audio. The problem is probably in key frames.

Thanks.

cd $DIR_IN
for file in *.mp4
do
 echo "Extracting the whole audio-track from $file to $DIR_TMP/$file%.mp4.aac"
 ffmpeg -i "$file" -vn -acodec copy $DIR_TMP/"$file%.mp4.aac"

 echo "Splitting the large video-file $file to a smaller audio-files '$file%.mp4'XXX.aac"
 ffmpeg -i $DIR_TMP/"$file%.mp4.aac" -c copy -f segment -segment_time 4 $DIR_TMP/"$file%.mp4%03d.aac"

 rm -f $DIR_TMP/"$file%.mp4.aac"
done

bash ffmpeg

share|improve this question

asked 2 hours ago

s3n0s3n0

101

New contributor

s3n0 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

How can I split the audio file .aac into small parts of exactly 4.0 seconds, ie. with ignoring keyframes?

The original video file was in .mp4 format. From this video file I got an .aac audio file. But the new parts of the split audio file always have 3.4 seconds and I need 4.0 seconds of audio. The problem is probably in key frames.

Thanks.

cd $DIR_IN
for file in *.mp4
do
 echo "Extracting the whole audio-track from $file to $DIR_TMP/$file%.mp4.aac"
 ffmpeg -i "$file" -vn -acodec copy $DIR_TMP/"$file%.mp4.aac"

 echo "Splitting the large video-file $file to a smaller audio-files '$file%.mp4'XXX.aac"
 ffmpeg -i $DIR_TMP/"$file%.mp4.aac" -c copy -f segment -segment_time 4 $DIR_TMP/"$file%.mp4%03d.aac"

 rm -f $DIR_TMP/"$file%.mp4.aac"
done

bash ffmpeg

share|improve this question

asked 2 hours ago

s3n0s3n0

101

New contributor

s3n0 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

cd $DIR_IN
for file in *.mp4
do
 echo "Extracting the whole audio-track from $file to $DIR_TMP/$file%.mp4.aac"
 ffmpeg -i "$file" -vn -acodec copy $DIR_TMP/"$file%.mp4.aac"

 echo "Splitting the large video-file $file to a smaller audio-files '$file%.mp4'XXX.aac"
 ffmpeg -i $DIR_TMP/"$file%.mp4.aac" -c copy -f segment -segment_time 4 $DIR_TMP/"$file%.mp4%03d.aac"

 rm -f $DIR_TMP/"$file%.mp4.aac"
done

share|improve this question

asked 2 hours ago

s3n0s3n0

101

New contributor

s3n0 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

asked 2 hours ago

s3n0s3n0

101

New contributor

s3n0 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 2 hours ago

s3n0s3n0

101

New contributor

s3n0 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 2 hours ago

s3n0s3n0

101