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• Why does ffmpeg trim my mp4 to gif conversion ?

  12 janvier 2024, par Kong

  I pad my .mp4 file then convert it to a gif but why does ffmpeg trim the gif to a shorter video ?

  


  ffmpeg -i Media1.mp4 -f lavfi -i anullsrc -c:v copy -af apad -t 5.83 Media1extended.mp4
ffmpeg -i Media1extended.mp4 -vf "split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" -loop 0 Media1extended.gif


  


  How do i make it not trim ? e.g. a command -autotrim 0

  


• ffmpeg FLV to FLV conversion fails [closed]

  8 décembre 2016, par leon

  I am using ClipBucket. I have set up ffmpeg, and I can convert AVI, WMV files to FLV video files without any problem, but now I am trying to convert a FLV video file to FLV video file with different video quality.

  However, there is an error in the conversion. Can someone help me please ?

  Logs :

  Preparing file...
  
  Unknown file details - Unable to get video details using FFMPEG 
  
  
  
  Converting Video
  
  Conversion Command : /usr/local/bin/ffmpeg -i /home/myspace86/myspace86.com/files/conversion_queue/136667418894906.flv -f flv -vcodec libx264 -r 30 -vf 'movie=/home/myspace86/public_html/player_logo.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [out]' -ab 320000 /home/myspace86/myspace86.com/files/videos/136667418894906.flv 2> /home/myspace86/myspace86.com/files/temp/136667424191b8e.tmp

  Conversion Details

  ffmpeg version N-52385-g6d7ec4f Copyright (c) 2000-2013 the FFmpeg developers
  
  built on Apr 22 2013 16:08:27 with gcc 4.1.2 (GCC) 20080704 (Red Hat 4.1.2-54)
  
  configuration: --prefix=/usr/local --enable-shared --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvpx --enable-libx264 --enable-libxvid
  
  libavutil 52. 27.100 / 52. 27.100
  
  libavcodec 55. 5.100 / 55. 5.100
  
  libavformat 55. 3.100 / 55. 3.100
  
  libavdevice 55. 0.100 / 55. 0.100
  
  libavfilter 3. 60.101 / 3. 60.101
  
  libswscale 2. 2.100 / 2. 2.100
  
  libswresample 0. 17.102 / 0. 17.102
  
  libpostproc 52. 3.100 / 52. 3.100
  
  Input #0, flv, from '/home/myspace86/myspace86.com/files/conversion_queue/136667418894906.flv':
  
  Metadata:
  
  metadatacreator : Yet Another Metadata Injector for FLV - Version 1.4
  
  hasKeyframes : true
  
  hasVideo : true
  
  hasAudio : true
  
  hasMetadata : true
  
  canSeekToEnd : false
  
  datasize : 40992128
  
  videosize : 37546219
  
  audiosize : 3247153
  
  lasttimestamp : 728
  
  lastkeyframetimestamp: 727
  
  lastkeyframelocation: 40978250
  
  Duration: 00:12:08.16, start: 0.000000, bitrate: 450 kb/s
  
  Stream #0:0: Video: vp6f, yuv420p, 648x459, 409 kb/s, 29.97 tbr, 1k tbn, 1k tbc
  
  Stream #0:1: Audio: mp3, 22050 Hz, mono, s16p, 32 kb/s
  
  [libx264 @ 0x146d900] height not divisible by 2 (648x459)
  
  Output #0, flv, to '/home/myspace86/myspace86.com/files/videos/136667418894906.flv':
  
  Metadata:
  
  metadatacreator : Yet Another Metadata Injector for FLV - Version 1.4
  
  hasKeyframes : true
  
  hasVideo : true
  
  hasAudio : true
  
  hasMetadata : true
  
  canSeekToEnd : false
  
  datasize : 40992128
  
  videosize : 37546219
  
  audiosize : 3247153
  
  lasttimestamp : 728
  
  lastkeyframetimestamp: 727
  
  lastkeyframelocation: 40978250
  
  Stream #0:0: Video: h264, yuv420p, 648x459, q=-1--1, 90k tbn, 30 tbc
  
  Stream #0:1: Audio: none, 22050 Hz, mono, s16p
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (vp6f -> libx264)
  
  Stream #0:1 -> #0:1 (mp3 -> libmp3lame)
  
  Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
  
  
  
  
  
  Unknown file details - Unable to get output video details using FFMPEG 
  
  
  
  
  
  Time Took : 0.3056 seconds
  
  
  
  conversion_status : completed

• FFMPEG MKV -> MP4 Batch Conversion

  15 juillet 2024, par blaziken386

  I'm trying to write a program that lets me convert a series of .mkv files with subtitle files into .mp4 files with the subs hardcoded.

  


  Right now, the script I use is

  


  ffmpeg -i input.mkv -vf subtitles=input.mkv output.mp4



  


  This is fine, but it means I can only convert them one at a time, and it's kind of a hassle because it means I have to fiddle with it every few minutes to set up the next one.

  


  I have another script I use for converting .flac files to .mp3 files, which is

  


  @ECHO OFF

FOR %%f IN (*.flac) DO (
echo Converting: %%f
ffmpeg -i "%%f" -ab 320k -map_metadata 0 "%%~nf.mp3"
)

echo Finished

PAUSE



  


  Running that converts every single .flac folder into an .mp3 equivalent, with the same filename and everything.

  


  I've tried to combine the above scripts into something like this :

  


  @ECHO OFF

FOR %%f IN (*.mkv) DO (
echo Converting: %%f
ffmpeg -i "%%f" -vf subtitles=%%f "%%~nf.mp4"
)

echo Finished

PAUSE


  


  but every time I do so, it returns errors like "invalid argument" or "unable to find a suitable output type", or "error initializing filters", or "2 frames left in the queue on closing" or something along those lines. I've swapped out subtitles=%%f for "subtitles-%%f" or subtitles="%%f.mkv" and so on and so forth, and none of those give me what I want either. Sometimes it creates Empty .mp4 file containers with nothing in them, sometimes it does nothing at all.

  


  I don't really understand what exactly is happening under the hood in that flac->mp3 code, because I grabbed it from a different stackoverflow post years ago. All I know is that trying to copy that code and repurpose it into something else doesn't work. Is this just an issue where I've fucked up the formatting of the code and not realized it, or is this a "ffmpeg can't actually do that because of a weird technical issue" thing ?

  


  I also tried the code listed here, when Stackoverflow listed that as a possible duplicate, but that gave me similar errors, and I don't really understand why !

  


  Also, if it's relevant, I'm running windows.