Hey guys, i need you help with this...
I read somewhere that is possible to change .flv to .mp4 without converting...
I opened the file with MediaInfo and is says that the video stream is AVC (High@L3.0) and Audio Stream is AAC (LC), So this is possible right? Someone told me that than these are codecs compatible with .mp4 container (AVC is part 10 of the MPEG-4 standard and AAC is part of it, too)
My doubt is what software should i use?
People told me to use AVIDEmux and set Video output and Audio Output as "Copy" and Output Format > MP4v2 Muxer
But my question is, Is it the best software to use? (I Haven't tried it yet, i only read about it) and the file-size will remain exactly the same, right? What about the Video Quality? Will it change?
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Last edited by sanlyn; 19th Mar 2014 at 03:30.
The easiest way I've found to remux/repack .flv to .mp4 or .mkv without converting (losing quality) is portable FLV Extract (mod by jofori89). It contains mkvmerge.exe and MP4Box.exe inside and straightforward GUI. You can find it @ videohelp, but the newest version is here: http://code.google.com/p/flv-extraxct/ or https://drive.google.com/folderview?id=0B70IHx-o4zREN0Z2TFlFaG4tMWs&usp=sharing .
Sometimes you need to check fps for example with MediaInfo and set it to displayed value instead of Auto, cos otherwise audio and video can be unsynchronised.
Plus with FLV Extract you can create audio only .m4a and .mka when you tick only Audio. The container name will be automatically adjusted.
Last edited by AllisOne; 27th Feb 2014 at 09:14.
Copy this text in notepad and save as FLV2MP4.bat in the folder with your flv files. Also place a copy of ffmpeg in the same folder. Doubleclick the .bat file and all the flv files in that folder will be copied to mp4.
for %%a in ("*.flv") do ffmpeg -i %%a -vcodec copy -acodec copy %%~na.mp4
dim objFileSys, file, folderName, folderObj, fileColl, objRegEx, newFile set objFileSys = CreateObject("Scripting.FileSystemObject") folderName = InputBox("Enter the full path where the files are located.", "Full path is required") set folderObj = objFileSys.GetFolder(folderName) set fileColl = folderObj.Files set objRegEx = new RegExp objRegEx.Pattern = " " ' the pattern is one space objRegEx.Global = true for each objFile in fileColl newFile = objRegEx.Replace(objFile.Name, "-") ' each pattern gets replaced with one dash objFileSys.MoveFile objFile, folderName & "\" & newFile next
Last edited by Baldrick; 27th Feb 2014 at 10:04.
Given the audio and video you've described, this may be a case where simply changing the extension from flv to mp4 would work.
I think you can download msvcr100.dll from internet and put in FLV Extract folder or/and in C:\Windows\System 32 and it should work. Or install whole Microsoft Visual C + + 2010 from Microsoft page.
Just out of curiosity - can you give me the link for the different version of MP4Box.exe with libgpac.dll?
Thanks. It's pretty old (2009?), but if it works, it works.
msvcr100.dll from http://www.dll-files.com
Now using the MP4Box version supplied with FLV Extract v2.2
C:\Program Files\FLV_Extract>MP4Box -version
MP4Box - GPAC version 0.4.6-DEV-rev2735
Compilation Date: Mar 2 2011 - by Kurtnoise
GPAC Copyright: (c) Jean Le Feuvre 2000-2005
(c) ENST 2005-200X
GPAC Configuration: (static configuration file)
Features: GPAC_HAS_SPIDERMONKEY GPAC_HAS_JPEG GPAC_HAS_PNG