MP4 specifically refers to the MPEG-4 part 14. A standard audio and video container that is part of the MPEG-4 specification developed by ISO / IEC.

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2
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1answer
182 views

How do I convert webm to mp4 for MacOSX?

I'm on MacOSX Lion and would like a method for converting webm to mp4 (or another iTunes compatible format). ffmpeg seems like a possibility but the documentation is a bit obtuse for me; step-by-step ...
11
votes
5answers
14k views

Join mp4 files in linux

I want to join two mp4 files to create a single one. The video streams are encoded in h264 and the audio in aac. I can not re-encode the videos to another format due to computational reasons. Also, I ...
3
votes
2answers
4k views

Convert mp4 video to a format xbox 360 can play

Here is a video file my Xbox 360 refuses to play: $ MP4Box -info video.mp4 * Movie Info * Timescale 90000 - Duration 02:18:33.365 Fragmented File no - 2 track(s) File Brand ...
3
votes
3answers
876 views

How to apply audio track to a mute h264/mp4-video losslessly?

I have a MP4/h.264-video with no sound. With ffmpeg or similar, how can I apply an audio track to that MP4-file without degrading the quality of the video (i.e. without recoding the video-track)? I'd ...
2
votes
1answer
1k views

How can I convert a video to h264, using pass-through if available?

On my Windows 7 computer, I have several videos that need converting to an iOS-friendly format. I'd like to do this as efficiently as possible. I have several kinds of videos: MKVs containing ...
7
votes
1answer
2k views

When spliting MP4s with ffmpeg how do I include metadata?

I have a few MP4s that i want to upload to my flickr account but they have a maximum size of 500mb as mine is only about 550 i was planing to simply split them in half then upload them, but i want to ...
3
votes
3answers
5k views

Reduce size of MP4

I have a MP4 file with a lengh of 22:44. Here are the details: Video: width: 720 px height: 404 px data bitrate: 1022 kBit/s overall bitrate: 1182 kBit/s fps: 24 codec: H264 - MPEG4 AVC ...
3
votes
2answers
650 views

What's the easiest way to trim an MP4 video on Windows 8, without re-encoding?

I have an MP4 file which I'd like to split in two, without re-encoding the audio or video. I'm happy to split at a keyframe.
6
votes
1answer
4k views

accurate cutting of video (+ audio) with ffmpeg

I want my website to allow users to accurately create their own clips from a source video I provide. I have a source video file that I first want to convert to something suitable for a website: ...
2
votes
2answers
7k views

What is the best way to downscale mp4 video while keeping it as sharp as possible?

I've got an .mp4 file that's currently 830x1100 (it's a screencast) that I need to resize down to 114x150. I've been experimenting for hours with ffmpeg settings and nothing comes out looking nice and ...
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0answers
1k views

Failed to convert a wmv file to mp4 with ffmpeg

i need a help with this command FFMPEG COMMAND: ffmpeg -y -i /input.wmv -vcodec libx264 -acodec libfaac -ac 2 -bufsize 20M -sameq -f mp4 /output.mp4 Output: ffmpeg version 1.0 Copyright (c) ...
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 ...
8
votes
3answers
473 views

How to convert .avi video that has 1 static image in the video (with sound) to mp4 video with ffmpeg to least possible size?

I've an .avi video (divx) that's at 25fps and it has mp3 audio at 64kbit/s. This video has just one image throughout the entire video. I'm trying to convert this video to mp4 but to make it as small ...
0
votes
1answer
672 views

Windows Explorer not showing film frame for .mp4

Anyone knows what part of registry is related to this film frame? I installed and uninstalled mp4box, avidemux, YAMB try to set default aspect ratios but failed, and now I have a new problem.
16
votes
2answers
69k views

Handbrake settings to convert MKV to MP4 while retaining the original quality

I have a ton of MKV files I need to convert to MP4 and my chosen software is Handbrake. I'm stuck on which settings would be best for the conversion. I want to retain full quality. Do I just convert ...
-1
votes
1answer
2k views

How I can normalize the sound on a video (mp4) file? [closed]

I have a video(mp4) that I would like to normalize the sound on. Any suggestions?
4
votes
2answers
7k views

Why is converting WMV to MP4 so slow?

I am trying to convert a video from WMV to MP4 with FFmpeg but it takes couple of hours. If I try to convert it to AVI it only takes about 10-15 minutes. ffmpeg version ffmpeg version ...
8
votes
1answer
5k 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, ...
0
votes
1answer
6k views

Change bitrate of MP4 file

I have to change the bitrate of MP4 files on Mac OS X. What's the best tool to do this conversion? Am I able to do it with QuickTime?
8
votes
2answers
8k views

FFmpeg drops frames when encoding a png image sequence into an x264 mp4 video

I'm trying to encode an image-sequence (frame0001.png, frame0002.png, ... , frame0160.png) into an x264 video using the following command: ffmpeg -i frame%04d.png -sameq -r 24 out.mp4 After ...
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vote
1answer
823 views

Merging h264/MP4 files with mp4box results in seeking and sync issues

I've a problem while merging two h.264/MP4 files with the same parameters except length. I'm merging by mp4box -cat .... After that, video players behave strangely: If I drag time slider closer to ...
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 ...
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votes
3answers
36k views

How to split a mp4 video into jpg pictures? [duplicate]

I have a video(with 4 min) in mp4 format(probably MPEG-4) that I need to convert into a lot of pictures(jpg's). I would need to take a lot of Print Screen and paste on MS Paint to manually do that, ...
5
votes
3answers
20k views

Batch Convert .mkv to .mp4

I want to batch convert all .mkv files in a folder into .mp4 with VLC. It should use the original video-/audio stream and if possible the .ass subtitle of the .mkv. It's not really a conversion, it's ...
0
votes
0answers
20 views

Convert ISO to MP4 with ffmpeg cli on linux [duplicate]

Possible Duplicate: how do I convert .iso to .mp4 without mounting with ffmpeg I have numerous iso and I would like to convert them to mp4 using ffmpeg (only the main video and not menus ...
0
votes
2answers
877 views

How to encode a fully working h264 video for flash player?

How to encode a fully working h264 video for flash player? I did some homework: It seems that I should use command like "ffmpeg -i input.mp4 -vcodec libx264 -g 1 -r 25 output.mp4" but no luck: the ...
0
votes
1answer
13k views

How play 3D movies on PC (Windows)

I have a 3D mp4 video file. When I open it with KMplayer/POT player, They display two instances of the film side-by-side. How can I watch it like a normal 2D video?
0
votes
1answer
1k views

How to view the filter graph used by Windows Media Player

i have a video that i cannot render in Graph Edit: GSpot cannot render: and AVISynth's DirectShowSource cannot open: And yet Windows Media Player (12) can play it fine. How can i figure out ...
3
votes
2answers
10k views

Conversion from WMV to MP4 file fails with FFmpeg

When converting a WMV file to an MP4 file, it says [mp4 @ 0x989c160] track 1: could not find tag, codec not currently supported in container and Could not write header for output ...
0
votes
1answer
864 views

MP4 re-ecoding to guarantee concatenation without re-encoding

I have 2 mp4 videos that fail to concatenate when using: MP4Box -add 1.mp4 -cat 2.mp4 out.mp4 Is there a way to re-encode 2.mp4 so that the concat call will create a valid output? Possibly with ...
0
votes
1answer
182 views

Suggest format for video compression [closed]

I've a high-quality movie of 720*304 dimension with a size of 1.45 GB, and duration of 2:20 Hrs. I need to compress it to near about 700-750 MB with about 90% Picture quality and 70% sound quality. ...
1
vote
2answers
2k views

ffmpeg: Pipe input error

I'm facing an issue while working with ffmpeg when input and output are pipes. Though Output pipe is working fine, piping the input is causing some error. I tried to convert mp4 video to flv using ...
0
votes
1answer
283 views

How do I get Wirecast to properly interface with Red5?

This is something I tried about a year ago, but now I'm seeing that the issue may not be resolved. But it's been a year, surely there must be a way to get Wirecast to work with Red5? As far as I can ...
15
votes
3answers
29k views

How to open and repair an m4v or mp4 video file?

Yesterday I was filming a scene with my phone but suddenly the application crashed and when I try to open the m4v generated it says that is corrupted. I have downloaded the video files (around 36MB) ...
0
votes
2answers
263 views

1080 HD video display - Windows 7

I am running Windows 7 in my Dell Studio 1555 Laptop. I have ATI Mobility Radeon HD 4570 graphics card inside. When I try to watch a video, I can see only some disturbed texture (dark pink grains ...
6
votes
2answers
6k views

How to convert 50 episodes from DVD into 50 .mp4 with HandBrake, easily?

I loaded a DVD with 50 episodes in it (chose VIDEO_TS from the program), now when i open it in HandBrake, it shows 50 "titles" in there. i choose 320x240 output format and start converting. Then i ...
14
votes
3answers
71k views

How do I create a DVD from an MP4 file using Windows DVD Maker?

I'm trying to create a DVD from an MP4 file using Windows DVD Maker (on Windows 7) but when doing so I get the error that the file type is not supported and cannot be imported. What is the easiest way ...
3
votes
2answers
2k views

How to play MP4 file with AAC 5.1 through S/PDIF

I have a laptop with Windows 7 x64 and a Sound Blaster X-Fi Surround 5.1 Pro. I connect the HDMI output of the notebook to my LCD-TV and the external soundcard to my home-theater receiver through an ...
0
votes
1answer
79 views

Can this DVD Player Play Modern File Formats? [closed]

I'm trying to get a TV with a Sony DVP-S560D CD/DVD Player going. They would like play some videos from the internet on it. Will the Sony DVP-S560D play MP4 files, AVI files, video CDs or do these ...
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vote
3answers
1k views

Converting a .FLV into a .AVI / .MP4 [duplicate]

Possible Duplicate: How do you convert FLV file format to a format that Picasa recognizes (e.g. AVI, MPEG, WMV)? Well i've been looking around google for hours trying to find a way on how ...
17
votes
3answers
17k views

Convert from MOV to MP4 Container format

I have a digital camera that records nice 1080p H.264 format but unfortunately it uses the MOV container format. Basically I have nothing but the camera and VLC that play this format natively. Is ...
2
votes
1answer
330 views

Can I transcode a video if I have an application that can play it?

My condo complex was burglarized last week and I've been tasked with retrieving the video from our security system to provide to law enforcement. The system is an older DVR (DiViS DVR - warning: PDF ...
1
vote
1answer
467 views

Lower mp4 file size

I have couple of (over 100) mp4 video files, which are approximately 15 MB each. I think they are unnecessarily high quality videos, I want to lower the sizes of each, by reducing the quality. I know ...
1
vote
1answer
2k views

How can I rotate MOV and mp4 files in Windows Live Photo Gallery?

I am using Windows Live Photo Gallery on Windows 7 to manage my photos and video clips from camera/phone. If I import photos/videos from camera, it is smart enough to rotate as necessary, but I have ...
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 ...
1
vote
1answer
3k 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 ...
0
votes
1answer
2k views

Error using ffmpeg to convert mkv to avi on Windows 7

I am using ffmpeg on a Windows 7 machine. I am trying to convert mkv files to either mp4 or avi. Here is the command I used: ffmpeg -i "C:\Path\To\Input.mkv" "C:\Path\To\Output.avi" Here is the ...
3
votes
2answers
1k views

A .mp4 converter with command line support?

I would like to find an application that I can use to convert any video format in .mpv4 or .ogg from the command line. I don't mind it cost money as long it worth it. Which one would you recommend? ...
1
vote
1answer
145 views

import videos again or convert from WMV into MP4?

A few years ago, I imported all the home movie content from my collection of miniDV camcorder tapes into Windows using Windows Movie Maker. These files are in WMV format. And now that I have Macs as ...
4
votes
1answer
1k 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 ...