1
vote
1answer
217 views

extracting mp3 audio from mp4: audio longer than video?

I have an mp4 video that has no audio/video sync issue. I tried to extract audio to an mp3 file, following the suggestion in this thread: Extracting audio from MP4 video into MP3 ffmpeg -i ...
0
votes
1answer
2k views

Why can't I convert FLV to MP4 format using FFmpeg when MP3 works?

In fact I have succeeded to convert FLV to MP3: D:\tmp\ffmpeg-20121005-git-d9dfe9a-win64-static\ffmpeg-20121005-git-d9dfe9a-win 4-static\bin>ffmpeg.exe -i a.flv -acodec mp3 a.mp3 ffmpeg version ...
1
vote
1answer
2k views

FFMPEG converting from m4v to mp4 does not stop processing

I'm using ffmpeg to convert various types of video files into mp4s. The command I use works for most video files I've encountered, however when it encounters an m4v it never stops processing the ...
2
votes
1answer
2k views

How to convert an MKV to MP4 with Subtitles

I have an MKV with subtitles. I want to convert it to MP4, but HandBrake does support encoding subtitles from anything other than a DVD. Is there a way to do what I want? I'll take anything on ...
2
votes
6answers
218 views

Software to convert mp4 to mp4 for iPhone

I've a huge mp4 video. What software is good to use to convert that file to an iPhone optimized video? Preferably for Mac OS X and free.
3
votes
3answers
3k views

Transfer Video to Sony Walkman NWZ-S544

How do I transfer an MP4 video file to my Sony Walkman NWZ-S544? It transfers but then I cannot play it because I get a "format not supported" error. The file I'm transferring is a standard MP4 ...
-1
votes
7answers
1k views

cannot convert mkv to mp4 [closed]

I'm using xvid4psp video converter. But I can't convert the mkv file to an mp4. what do I do?
3
votes
4answers
18k views

Convert MP4 to OGG (Video)

Does anyone know a way to convert .mp4 video to .ogg video (in Windows)? None of the converters I've seen online seem to do the job.
1
vote
2answers
4k views

How to write an automated script to convert MKV to MP4 on Mac OS X?

I'm in need of a way to re-encoding MKV unproccessed (via Pass Through)... I pretty much found the solution (see source at the bottom) but I need a little bit of help. As what kind of script do I ...
7
votes
7answers
27k views

Rotate a MP4 file, while preserving codec and quality attributes

I need to rotate a MP4 video by 90 degrees. There is software like Free Video Flip and Rotate available that does this but produces an AVI file. Do you have any suggestions for a software to produce ...
9
votes
9answers
675 views

Convert mp4 to mp3

I would like to convert mp4 (video included) to mp3 (without video). what is the best way of doing this apart from using audacity (or similar software) and performing manual conversion (recording as ...
25
votes
9answers
39k views

How to convert WMV to MP4?

How can a set of WMV files be converted to MP4 so I can import them to my Apple TV?
0
votes
2answers
626 views

Best utility for converting Flip Mino HD videos to Windows Movie Maker compatible format?

I've got a Flip Mino HD and am looking for a free utility that will convert the default mp4 video format into something that is Windows Movie Maker (Live or Standard) friendly. What do you guys ...
12
votes
6answers
9k views

How can I convert .mov to mp4?

I have a .mov file I've just recorded that's 600MB, I want to convert it to a smaller .mp4 file. How can I do this?
4
votes
4answers
4k views

How can I convert MP4 video files to DVD?

I've got some MP4 video files that I'd like to put onto DVD. What is the best software (preferably free) for accomplishing such a task?
3
votes
4answers
703 views

Which file format to use for simple video editoring

I've just bought a Sanyo VPC-CG10 camcorder which saves clips as MPEG-4 (specifically, High-Definition 720p MPEG-4 AVC/H.246) I want a simple, cheap way to edit the clips and as, I'm using Windows ...
4
votes
3answers
5k views

Synchronizing audio and video using MP4Box / ffmpeg to concatenate files

I have two H.264 encoded MPEG-4 files that I need to concatenate. I have been using MP4Box for this task by first ensuring the files are encoded identically (even went so far as to compare output from ...