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ffmpeg - How to get the real, actual duration of an MP3 ...
https://stackoverflow.com/questions/10437750/how-to-get-the-real-actual-duration-of-an-mp3-file-vbr-or-cbr-server-side
ffmpeg -i "audio.mp3" -acodec copy "audio_fixed.mp3" Because it uses copy it takes a fraction of the time the original encoding takes. This is hardly noticeable with a song, but you really appreciate it with a 7 hour audiobook. After re-encoding, the ID3 "Duration" tag now has the correct information.
ffmpeg - Trim audio file using start and stop times - Unix ...
https://unix.stackexchange.com/questions/182602/trim-audio-file-using-start-and-stop-times
Stop writing the output or reading the input at position. position must be a time duration specification, see (ffmpeg-utils)the Time duration section in the ffmpeg-utils (1) manual. -to and -t are mutually exclusive and -t has priority. This should create a copy (file-2.mkv) of file.mkv from the 20 second mark to the 40 second mark.
FFmpeg - how to adjust video (clip) duration to sound ...
https://video.stackexchange.com/questions/23079/ffmpeg-how-to-adjust-video-clip-duration-to-sound-duration-if-sound-is-longe
The duration shown in desktop players or tools can be wrong, but playback should be as desired, except that the last frame is shown along with the end of the audio. This skips re-encoding and is quick. You can add -i and skip -o vid_new.mp4 if you want to edit the timecode in-place in existing file i.e. mp4fpsmod -x -T keep -t vid_tc.txt -i vid.mp4
ffmpeg Documentation
https://ffmpeg.org/ffmpeg.html
Show benchmarking information during the encode. Shows real, system and user time used in various steps (audio/video encode/decode). -timelimit duration (global) Exit after ffmpeg has been running for duration seconds in CPU user time. -dump (global) Dump each input packet to stderr. -hex (global) When dumping packets, also dump the payload.
How to Get Duration of Video with FFmpeg - SkillSugar
https://www.skillsugar.com/how-to-get-duration-of-video-with-ffmpeg
In this tutorial, we will learn how to get the duration of a video with FFmpeg using the ffprobe utility.. Getting the Duration. To get the duration with ffprobe, add the -show_entries flag and set its value to format=duration.This tells ffprobe to only return the duration.. ffprobe -i sample_5.mp4 -v quiet -show_entries format=duration -hide_banner
Video converted by FFMPEG has a different duration, why ...
https://video.stackexchange.com/questions/15581/video-converted-by-ffmpeg-has-a-different-duration-why
My goal is to convert them to the MP4 container format ( MPEG-4 Part 14) with AAC -encoded audio stream and MPEG-4 part 10 -encoded video stream. I use the following line to convert the videos: ffmpeg -y -i " {inputFile}" " {outputFile}" The converted video looks fine, however the duration of streams in the converted file and the input file ...
#4214 (Conversion to mp3 changes audio duration) – …
https://trac.ffmpeg.org/ticket/4214
If I manually modify this bitrate to 8kbps, the audio duration is correct in the HTML5 player. I believe FFMPEG writes the XING frame as though the audio was stereo even if it is mono audio, which is the cause of the problem. This also explains …
FFmpeg Filters Documentation
https://ffmpeg.org/ffmpeg-filters.html
Specify the minimum total duration in the output audio stream. See (ffmpeg-utils)the Time duration section in the ffmpeg-utils(1) manual for the accepted syntax. Used only if set to non-negative value. If the value is longer than the input audio length, silence is added to the end, until the value is reached.
How to Extract Audio from Video Using FFmpeg
https://www.leawo.org/entips/how-to-extract-audio-from-video-using-ffmpeg-1400.html
-ss is the start of the extracted audio timestamp, and -t is the audio duration. By using this command, you will be able to extract a certain portion of source audio file from video files using FFmpeg. Part 2: Extract audio from video using best FFmpeg's alternative
How to use FFMpeg to do Simple Audio Conversion
https://www.howtoforge.com/tutorial/ffmpeg-audio-conversion/
ffmpeg -formats. and. ffmpeg -codecs. and all supported forms will be displayed. You can use one input file to get several different output files by just entering the name and the prefix like this: ffmpeg -i filename.mp3 newfilename.wav newfilename.ogg newfilename.mp4. This will result in converting 3 output audio files (wav,ogg,mp4) from one ...
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