6
votes
3answers
2k views

How can I remove multiple segments from a video using FFmpeg?

I am trying to delete a few sections of a video using FFmpeg. For example, imagine if you recorded a show on television and wanted to cut out the commercials. This is simple with a GUI video-editor; ...
0
votes
2answers
325 views

Remove beginning and end from multiple MP4 files in bulk

I have several 100 videos that I need to remove the first 20 seconds and the last 30 seconds of. Obviously not practical to do this one at a time. Can I automate this somehow, maybe in an OS X ...
1
vote
1answer
1k views

ffmpeg - concatenating two MP4 files results in bad output file

I generated two MP4 files - a five-second intro file, which is created by the script below, and the main video (about one minute long) is created by screen-cast-omatic, both in MP4 format. When I ...
1
vote
1answer
2k views

Rotate MP4, and change dimensions

I have an MP4 video that was filmed on my Android phone, but the guy filmed it holding my phone some weird way. When viewing it in QuickTime I have to rotate my laptop 90 degrees and then I will see ...
1
vote
0answers
172 views

Trimming videos - quicktime vs. mplayer/ffmpeg stack

I have several mp4 video files (H.264, AAC) from which I want to trim a few seconds at the beginning and the end. I used Quicktime Player 7 and MPEG Streamclip for this. The generated files are a bit ...
6
votes
1answer
4k views

Accurately cut video files from command line

I'm having trouble finding a cli application that can take a video file (avi, mkv, and mp4 preferably) and cut out very short clips (2-6 seconds) with precision time accuracy. I've tried ffmpeg, ...
3
votes
2answers
2k views

Extracting A Clip From An MP4 File In Linux on Kubuntu 11.10

I'm running KUbuntu 11.10 Linux. I would like to extract a clip from an MP4 file. I tried this command: myCLIPrompt:~/Downloads/temp/clips$ mencoder -ss 00:43:13 -endpos 00:02:12 -oac copy -ovc ...
0
votes
1answer
2k views

Sound out of sync after merging multiple mp4 files with Avidemux

I am trying to join (merge) two or more .mp4 files together, without re-encoding. Here is what I did: Started Avidemux 2.5.5. With File->Open, selected Input1.mp4. I received this message - "H.264 ...
4
votes
1answer
802 views

What tools should I use to edit H.264 MP4 GoPro videos?

I have recorded videos using a GoPro, which produces MP4 files containing H.264 encoded videos. I would like to do some simple editing tasks on these videos without losing quality:- Cut various ...
3
votes
1answer
2k views

change mp4 `ftyp` from `isom` to `mp42`

Will I be able to change the ftyp of an mp4 file? I have two mp4 files and placed it unto media info to see what is the difference. The other mp4 plays on my sansa fuze device while the other does ...
0
votes
1answer
218 views

windows movie maker imports .mp4 files as X's

When I drag the .mp4 files from my video camera into movie maker, they all end up as X's with an error message about not understanding the format. However, they play fine in Media Player. Now what?
3
votes
4answers
710 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 ...
9
votes
4answers
4k views

How do you split a large MPEG-4 video file into smaller files?

I have an hour of raw footage from a users group meeting that I want to split in to 10-minute chunks so I can upload them to YouTube. I did some searching and couldn't really find a good way to ...
0
votes
2answers
4k views

How do I edit MP4/H264 video files in Sony Vegas Platinum 6?

If I try to open an MP4 file made by a Sony Webbie in Sony Vegas Platinum 6, it won't open. (Something made me think they would work together.) The Webbie files are H264. It will happily play ...