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Freeware tool to change playback speed of avi file [closed]

I am looking for a Windows tool that can convert the framerate of an avi video file. Basically I want it to play at 4 times the speed.

The video itself should technically not really be 120fps but still 30fps. It should just resample the source video so that it seems to be playing at a speed which is 4 times as fast, which should result in the same effect as playing the original in 120fps.

I tried using VirtualDub, but it results in frozen frames every 5 seconds for about 1 second.

Can AVI files contain a virus?

I'm downloading an AVI file via a torrent, but my anti-virus detects something. Is it possible that the AVI file contains a virus?

It is quite weird since the torrent has many positive reviews.

Batch-split many AVIs in 2 parts?

how can I batch split many AVIs into 2 parts, with no conversion?

NB: this didn't help much What is the best software to split and join avi files?

How can I fix a broken AVI file?

I have a broken AVI, it won't play in VLC, Xine or MPlayer.

I tried Handbrake (reads the file and resets the source to None), OggConvert, Avidemux and mencoder fail to read the file, I cannot seem to reencode this file.

I suspect the header info is corrupt, is there a way to get the a/v streams out with a missing header?

How to play AVI and MKV files in Windows Vista Media Center?

I've installed the DivX codec on my computer. I can play those files just fine in Windows Media Player. But when I tried it on Windows Media Center it crashes out. How can this problem be fixed?

NOTE: My OS is Vista Home Premium 64 bit (x64).

how can I convert a Powerpoint presentation to a video file (AVI or WMV)? [closed]

What tools can convert Powerpoint presentations to video formats?

Free (as in beer or as in speech) preferred, since this is a one-time thing.

What is the .srr extension used for when coupled with an .avi file?

I've just noticed them more recently; does anyone know what the .srr extension is used for? I always find them with .avi files (encoded as DivX or Xvid). I tried searching the usual extension sites but couldn't find a definition that looks valid for this context... Perhaps I didn't look hard enough.

Convert stereo audio to mono in AVI file

I have an AVI file with audio recorded only to the left channel.

Is there a setting, audio filter, or whatever to allow me to duplicate the left channel to the right channel, thus converting from stereo to monaural (mono)?

This is an issue mainly because my laptop suffers from a bug where audio won't play out of the left speaker.

Anybody know of a free program to convert a .PPT to .AVI?

Anybody know of a free program to convert a .PPT to .AVI?

Preferably open source but anything that is free will work.

Batch convert videos from MPG to AVI

I have a few hundred short MPEG files (each ~10 seconds) that I need to batch convert to AVI. What would be the best way to do this?

I've tried using WinFF but the quality was very subpar.

How to losslessly combine multiple AVI files into a single file?

I would like to combine multiple movie clips with .mov and .avi extension into a single file. Is there any free software in the market that is good and able to perform that?

Preferably that should work without any loss in quality.

ffmpeg and the 'unable to find suitable output' error

I'm trying to convert a large MKV to an old-school AVI file.

I'm trying this:

ffmpeg -i video.mkv -s -codec:v mpeg4 -bf 1 -b 2567k -mbd 2 -g 300 -flags cgop -acodec copy video.avi

but I get

[NULL @ 0x7fa0d901e600] Unable to find a suitable output format for 'mpeg4' mpeg4: Invalid argument

Long version of ffmpeg's message...

ffmpeg version 2.1.3 Copyright (c) 2000-2013 the FFmpeg developers
  built on Feb  4 2014 17:53:32 with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.1.3 --enable-shared     --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-     hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags=        --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
  libavutil      52. 48.101 / 52. 48.101
  libavcodec     55. 39.101 / 55. 39.101
  libavformat    55. 19.104 / 55. 19.104
  libavdevice    55.  5.100 / 55.  5.100
  libavfilter     3. 90.100 /  3. 90.100
  libavresample   1.  1.  0 /  1.  1.  0
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
Input #0, matroska,webm, from ‘video.mkv':
  Metadata:
    creation_time   : 2011-05-11 09:25:47
  Duration: 00:49:01.35, start: 0.000000, bitrate: 2851 kb/s
    Stream #0:0(eng): Video: h264 (High), yuv420p(tv, bt709), 1280x720, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    Stream #0:1(eng): Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s (default) (forced)
    Stream #0:2(eng): Subtitle: subrip
[NULL @ 0x7fa0d901e600] Unable to find a suitable output format for 'mpeg4' 
mpeg4: Invalid argument

Any idea what's going on?

EDIT: I intended to use ffmpeg after DivX Converter - both on Mac and Windows - would fail at various points trying to transcode a video to DivX Home Theater profile. The closest I got was shlck's answer. It threw up only warnings (rather than errors.) In any case, I couldn't get the video to play on the DVD player (it would freeze every 10 seconds for about 6 seconds). If you've found this question while trying to research the creation of a DivX Home Theater profile-compatible video, you could possibly use this string as a starting point to figure out what's wrong, and post a new follow up question to SU:

ffmpeg -i video.mkv -s 720x406 -codec:v mpeg4 -bf 1 -b:v 2567k -mbd 2 -g 300 -flags cgop -sc_threshold 1000000000 -acodec copy video.avi

(In the end I gave the old DVD player away).

Change default audio track in .avi without remuxing

I have some .avi files that have multiple audio tracks and the default audio track is in a foreign language. I'm not seeking to remove the other track, but merely change some default flag within it so that, when I open it, it plays track 2, or whatever.

I dont want to create any new files, I shouldn't have to do anything like that, and with .mkvs this was really simple.

So I'm wondering if it is also possible to _{[reasonably simply]} modify the contents of an .avi

How to make Chrome save an AVI file instead of play it?

Sounds trivial? Just go to Options\Under the hood and click on clear auto-opening settings, right?

Well... it's grayed out!
So I go to somewhere on the web and right-click on the link to an AVI file (the type of file in question) and save it. while it's being downloaded, I click on the attached drop-down menu and am surprised to see that "Always open files of this type" isn't marked at all. So I mark it and go back to the clear auto-opening settings - now it is not grayed out. So I click it and it is grayed out again.

Still links to AVIs open in chrome in playing mode and not save as mode...

btw, this mess happens only on my sisters computer. I've checked on mine - Chrome acts as you would have expected.

UPDATE:
I've checked it on IE, FF and Cr - the behavior is the same for all three browsers on her computer, whereas the behavior is "standard" on mine. So could it really be a plugin issue, or is it something in her Windows setting?

FFmpeg/avidemux: fix packed B-frames

I'm transcoding some of my old mpeg4 videos (in avi containers) to h.264 with FFmpeg. Basically

ffmpeg -i input.avi -c:v libx264 [x264 settings] -c:a libfdk_aac [aac settings] output.mp4

When doing so, mpeg4 issues the following warning

Video uses a non-standard and wasteful way to store B-frames ('packed B-frames'). Consider using a tool like VirtualDub or avidemux to fix it.

I know I can still successfully transcode, but from the warning it is not clear to me whether the quality of the resulting h.264 video will be affected.

So,

• Given that I only care about the quality (and size, I want to minimize the size for my mobile devices, which is why I'm also using the veryslow preset) of the output h.264 video, should I care about the packed B-frames?

• If I should, how do I fix them with avidemux? (I already tried skimming through the manual.)