vidconv

vidconv simply runs simple, standard video transcodings. vidconv provides a simple, sane interface to the most common transcoding tasks, something that ffmpeg spectactually fails to do.

vidconv relies on ffmpeg, ffprobe and mediainfo to do its work.

execution

me > ./vidconv.pl -h

Usage:

vidconv.pl
    [--informat xyz   ]     # which *.xyz files in dir to process
    [-i  inFile.zzz   ]     # transcode a single file

    [--outformat abc  ]     # vids' output format (default: "avi")
    
    [--delayAudio 2.3 ]     # delay or advance ( -2.3s ) the audio
    [ -h              ]     # show this message

This program transcodes videos into other formats, *.avi by default
The formats can be any of: "@OkFormats" 

Either '-i infile.zzz', or '--informat yyy' must be specified. 

using vidconv

vidconv:

• converts to and from any of the formats handled by ffmpeg: avi, mp4, mkv, mov, divx, wmv, mpeg, and ogm.
• all of the files in a directory of a particular type can be transcoded at once
• alternatively, individual files can be transcoded

Currently, vidconv produces 20 FPS (frame per second) videos accompanied by 100kb/s MP3 sound tracks.

Dealing with the sound track

Handling audio - video desynchronization

vidconv can detect if the a video's sound track is mis-aligned. If there is audio - video desynchronization, vidconv automatically corrects the mis-alignment during transcoding. Alternativly, if an audio/video offset is specified on the commandline, the user's commandline setting overrides vidconv's autodetection.

Selecting the English language soundtrack

Many videos that 'a friend' downloads from the internet have multiple soundtracks, and quite often the first soundtrack - the track played if no specitic audio track is selected - will be non-English, say Russian.

vidconv automatically selects the English audiotrack and includes only the English audiotrack in the output file.