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.
1
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0answers
18 views
How do I create a streamable and seekable MP4?
I want to create an MP4 that supports seeking and streaming. DASH appears to be what I want except that the segment seek points are stored in an external file (the MPD) which doesn't work for my ...
0
votes
1answer
11 views
VLC on CentOS 6 always shows black screen
I downloaded VLC on my CentOS 6.
When I play a video by double clickig on finder, or using the vlc command in terminal, it shows a black screen. Sound works fine though.
Do you have any idea what ...
0
votes
1answer
23 views
Save “fingerprint” info inside MP4 videos
I have a Debian server serving MP4 videos (for download, as files) and I was wondering if there is a way to save some unique "exif" information for each user that downloads a file.
I would like to do ...
5
votes
2answers
6k 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
0answers
27 views
Is it possible to deploy H.264 decoding capabilities to XP SP3 machines?
The vast majority of workstations here are Windows 7+, which means WMP will play h.264-encoded videos OOTB. Unfortunately, though, there are still some XP machines kicking around. (I believe they're ...
0
votes
1answer
39 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 ...
0
votes
1answer
88 views
How do I merge a folder of PNG images to a mp4 movie using avconv?
I have a folder containing many time stamped PNG images which I'd like to merge to a short movie. The contents of that directory looks like this:
└── images
├── img_20130421_115547.png
├── ...
1
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0answers
39 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 ...
3
votes
2answers
2k 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 ...
0
votes
1answer
31 views
Quality issues with mov to mp4 video conversion through handbrake
I am converting mov video files to mp4 through handbrake tool but the video quality is getting disturbed in the windows media player. It is working fine with the vlc player. How do I resolve this ...
0
votes
1answer
1k 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 ...
0
votes
1answer
32 views
How can I extract tags from a MP4 file with MP4Box or mediainfo on the command line
I want to extract tag information like title, author, encoded date, tagged date and so on from several video, audio and subtitle tracks in .mp4 files (for later use in mkvmerge). I need the extracted ...
0
votes
1answer
960 views
How to Merge MP4 Files with Different Frame Rates and Different Audio Sample Rates?
I have four MP4 files that I wish to merge into one file.
Let's call these four files the following: file_1, file_2, file_3, and file_4.
I want to merge the files in the following order: file_1, ...
1
vote
1answer
1k 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 ...
3
votes
1answer
39 views
How to merge FLAC files into single, eventually chaptered, file?
Windows Phone doesn't support gapless audio playback, so albums whose tracks are meant to segue into one another are ruined (there's a pause or a click when switching tracks).
I would like to try ...
0
votes
1answer
23 views
Audio file tagging/renaming
I would like to properly tag my music collection in the following way:
Filename:
Artist - Song Title - Key(Original Key) - BPM - Genre
Tags:
The tags match above(each token above is a id tag).
Is ...
0
votes
3answers
1k 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 ...
2
votes
1answer
112 views
How can I get high quality/low size MP4s like the LOL release group?
Release group LOL does an excellent job at encoding their releases on The Vampire Diaries (on other shows like How I Met Your Mother the bitrate is higher, so doesn't seem this effective).
About 200 ...
0
votes
1answer
143 views
How to merge an image into an audio file?
I am trying to merge a thumbnail-size (104x80) image into an audio file (M4A). I want it to be played in JW Player, but it doesn't seem to support thumbnails. I have tried it in VLC Player, but the ...
4
votes
5answers
18k 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 ...
0
votes
0answers
37 views
How to fix corrupted .mp4 audio recording file?
I have an mp4 recording file but it is corrupted - maybe there was something wrong happening durring the record session and interupted the process.
I think the first part of the record is still valid ...
1
vote
0answers
51 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 ...
8
votes
9answers
512 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 ...
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 ...
20
votes
7answers
87k views
How can I merge two mp4 files without losing quality?
I have two high-quality mp4 files, which are of two parts of the same show.
I want to merge them together into 1 file, and I usually use VirtualDub to merge my files... But it doesn't seem to support ...
20
votes
4answers
22k views
Joining H264 *without* re-encoding
I have two halves of a single show in two .MP4 files, encoded in H264. I would like to join them without re-encoding.
Is this possible?
I managed to create a joined video as a Quicktime file (.mov) ...
0
votes
1answer
151 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 ...
2
votes
2answers
6k 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 ...
1
vote
2answers
5k views
Command line to convert OGV to MP4 video files
I want to convert every [OGV|OGG] video file Ogg data, Skeleton v3.0 I have into MP4 or WebM.
Can people please suggest a command line to do so, in order to keep the quality? Also do they need ...
4
votes
1answer
8k 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 ...
2
votes
0answers
264 views
Streaming mp4 with ffmpeg
I need to create a feed that has two streams - webm and mp4 - so that it can be compatible on all HTML5 video players. The webm stream works perfectly. However, when trying to access the mp4 stream, ...
0
votes
1answer
134 views
RAD Game Tools is unable to open an MP4 file
I downloaded RAD Game Tools to convert an MP4 file to BIK, but I get the following error message:
This happens with not just the file I want to convert, but with all my video files. I have no idea ...
0
votes
2answers
166 views
Tools to check if MP4/AVI is playing correctly?
I have downloaded lots of video stuffs (I mean ALOT), but when I tried to review some of them, some parts are not playable (sometimes portions of the file, and sometimes the whole file itself).
Is ...
0
votes
1answer
116 views
ffmpeg Live Input MP4 Error
Currently I have a mic and a webcam connected to my computer. I am running ffmpeg on CentOS 6.3.
When I try to record a video without audio by:
ffmpeg -y -f video4linux2 -t 15 -s 640x480 -r 25 -i ...
0
votes
1answer
4k 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?
3
votes
2answers
903 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 ...
-1
votes
1answer
537 views
What is the best video format to download YouTube videos? [closed]
When trying to download a video from YouTube via an add-on in my web browser, I have the choice to download the video in Webm, FLV or MP4.
Which one will give the best audio and video quality ...
1
vote
0answers
262 views
FFmpeg AVI to MP4 preserves sound, but not images
Working with FFmpeg at a conversion (any file to MP4 (H.264/AAC)):
ffmpeg -y -i testdatei.avi -i logo.jpg -filter_complex overlay=15:15,scale=-1:720 -c:v libx264 -profile:v baseline -preset medium ...
1
vote
1answer
669 views
Google Chrome not playing mp4 files
Videos stopped after 1 frame, I have tried local mp4 files, vimeo html5 videos and coursera videos and they all stopped after one frame and stopped loading. My system is 64-bit Windows 8, anyone have ...
1
vote
0answers
166 views
ffmpeg and matching encoding options
I have two mp4 files captured from different android devices. the ffmpeg output of each file is listed below. Can i re-encode two.mp4 so that the encoding options are the same as one.mp4? I cant see ...
0
votes
2answers
805 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 ...
9
votes
7answers
21k views
How can I merge or concatenate two or more MP4 files creating another MP4 file?
How can I concatenate or merge 2 or more MP4 files, in a final output MP4 file also?
I have tried in the DOS window to use the COPY command (I have read it somewhere) but it doesn't function well.
1
vote
1answer
361 views
Which is better between a .flv and a .mp4 video files with same encoding?
There is a server from which I can download videos, and I can choose if I want .flv or .mp4.
The encoding is the same:
-> FLV
Flash Video
1 video stream: 640*360 (16:9), at 25,000 fps, AVC ...
22
votes
9answers
24k 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?
1
vote
1answer
1k 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
32 views
Audio File - No Album Property [duplicate]
Possible Duplicate:
Windows: What software do you recommend for editing MP3 ID3 tags?
I have an audio file with no Album attached to it. Figured I could go into the Properties + Details and ...
2
votes
1answer
103 views
Why do I get a 403 error in Firefox but not in IE?
Going to http://teamtreehouse.com/ in IE 9.0.8112 the video on the right comes up and shows the still image. You click the image, and it plays fine.
I have Firefox 18.0.1 as my primary browser. When ...
1
vote
0answers
686 views
Good, simple tool to split MP4 videos in Windows? [closed]
I checked with "mp4 split windows" but SU didn't return much.
I'm looking for a simple Windows application to splice an MP4 video into 60mn bits. AviDemux is OK but it's a bit big and I had some ...
3
votes
0answers
99 views
FFmpeg & iPhone: don't display audio language button
I'm creating an MP4 file with FFmpeg 1.1.1, using life and aevalsrc to generate some test video and audio:
ffmpeg -f lavfi -i life -f lavfi -i aevalsrc=0 -frames:v 750 life.mp4
If I play it on an ...
3
votes
2answers
8k 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 ...
