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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ffmpeg: Could not find codec parameters for stream 0 (Video: h264) unspecified size

I try to convert a video from .raw to .mp4. For this reason I did download, build and install both x264 and ffmpeg. However, command: ffmpeg -f h264 -i output.raw -vcodec copy output.mp4 fails with ...
3
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1answer
2k 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 ├── ...
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1answer
1k views

How to add “chapters” or “bookmarks” to movies?

Is there an easy way to add chapters to existing movie files? Note: Actually, I’m not 100% sure if they’re called “chapters” in video files, but it’s the same concept as DVDs. I assume this differs ...
2
votes
1answer
694 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 ...
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1answer
180 views

Edit “Media Duration” metadata on MP4 file

I have some video files which were converted to MP4, but not quite correctly. When I examine one with exiftool, I see these metadata values: Duration : 0:11:23 Track Duration ...
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1answer
2k 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 ...
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1answer
3k views

Problems with frame rate on video conversion using ffmpeg with libx264

I have problems with transcoding some videos. I ran the most simple ffmpeg command and it takes very long time and the output file is about 10 times bigger. If I provide the frame rate parameter -r it ...
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1answer
259 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 ...
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1answer
158 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 ...
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1answer
448 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 ...
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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 ...
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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
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1answer
28 views

What is a good way to make small audio edits to a very large mp4 file?

I have a video that I'd like to remove a few small things from its audio (coughs, phone vibrations, etc.). It's an mp4 and it's rather huge (over 4GB), and I'm not finding an editor that can manage to ...
0
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1answer
202 views

ffmpeg: Adding Drawtext timecode & Watermark with -filter_complex, Stream Matching

I am trying to add the timecode with drawtext and put a logo with ffmpeg. The command line looks like this: ffmpeg -i INPUT.MP4 -i logo.png / -filter_complex ...
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1answer
520 views

Improve ffmpeg command for MKV to MP4 for iPad?

I have many MKVs made from DVDs and BRs by MakeMKV that I converting to MP4 so I can play/stream on my iPad Air. I now use this command for converting my MKVs to MP4: ffmpeg -i input.mkv -strict ...
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1answer
123 views

MP4 video plays past it's length?

I have a video file. MP4. It was originally 25GB and 10 hours long. But then I tried to trim it with movie maker. I did what I needed and then I published the video. No, I didn't save over ...
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1answer
208 views

How to check is h264 mp4 file is correct?

I writing applcation which split live stream from web camera to multiple h264 mp4 files. Now I have some problems like missing keyframes and maybe another. Are there any tools to check my output ...
0
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1answer
195 views

Read/Write albumart cover type in mp4/m4a with AtomicParsley or any other CLI tool?

Is it possible (and how) to read and/or write the cover type of the artwork embedded in mp4/m4a audio with AP? MP4 audio supports 'Front Cover' and 'Back Cover' types, and I can read/set those values ...
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1answer
458 views

MP4Box and concatenating files with different aspect ratio

I have a large directory of small video clips taken with a cell phone. I've been able to use mp4box to concatenate them into a single file nicely EXCEPT if they are different aspect ratio. In this ...
0
votes
1answer
222 views

Concatinating mp4 files to a single mp4 file

I have some mp4 video files with me and i need to concatenate them one by one and make a single MP4 video file. I came to know about FFMPEG through which we can concat files. I tried doing ffmpeg ...
0
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1answer
116 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 ...
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1answer
47 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
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1answer
819 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 ...
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0answers
366 views

How to merge MP4 files with different bitrates?

I want to merge two or three MP4 videos with MPEG-4 AVC video codec and MP3 (sometimes MP3 Surround) audio codecs. Both audio and video can have different bitrate. If it will be possible, without ...
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0answers
139 views

Combine/concatenate multiple MP4 files, making each file into a chapter

I am looking to use handbrake to combine 43 short mp4 files into one larger file. However, I want to ensure that the start of each file is recognized as a chapter. I'd be using vlc to play the file.
3
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0answers
201 views

Why is the resulting file unplayable when I use FFMPEG to convert a MP4 video to ASF?

I want to convert an .mp4 file to an .asf file, but I need to keep the size of the file below 150 mb (the server I need to upload the file to can only take files under 150 mb). Basically I want to ...
3
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0answers
181 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 ...
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0answers
436 views

IE11 not playing mp4 file

I am using ffmpeg to convert a freely available public RTSP stream to a mp4 file. I can play the file quite well in Chrome using a standard HTML5 video client on a windows 7 machine but not in IE11. ...
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0answers
682 views

auto tag video and add to itunes on windows

I'm looking for an app similar to Auto TV Tagger that monitors a folder and auto magically tags the file either through a webservice or by the file name given then adds it to itunes in the proper ...
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125 views

Seekbar not working in Chrome

I have uploaded a video to my Windows Storage and noticed, that the seekbar (of the default Chrome's html5 player) is not working. Url of that video is: ...
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155 views

FFMPEG converted file for jwplayer shows black

im new to ffmpeg, and I'm trying to convert it to mp4 to play on jwplayer, the video converts, the sound is good, but all i can see is black color, maybie anyone knows the answer to this problem? ...
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0answers
143 views

How to merge 2 mp4 files with 1 atom?

I'm merging two mp4 files for video streaming. the problem is, the merged file contains two atoms, 1 atom from each file and that is a problem when it comes to streaming. the client needs to wait ...
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0answers
215 views

Invalid sample format error while converting a DVD iso file to Mp4

I get the following error when I convert a ISO file to MP4. The ISO file contains a VIDEO_TS directory with the video files: ffmpeg -i DieRelativeringVanMenswees.iso DieRelativeringVanMenswees.mp4 ...
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0answers
196 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 ...
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0answers
205 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 ...
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0answers
579 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 ...
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424 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 ...
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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) ...
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0answers
454 views

Getting Windows Media Center to recognize chapter marks in .mp4 files

I started to convert my DVD collection to .mp4 and despite the fact that Handbrake is adding chapter marks in the .mp4 files, WMC doesn't recognize them and skips forward in the same manner as ...
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0answers
21 views

How to recover at least audio from broken recorded skype stream file?

I used "Free Video Call Recorder for Skype - DVDVideoSoft" to record an audio-video stream at skype conversation, but mp4 file got broken somehow, because I can not open it with any media player. I ...
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0answers
76 views

Why does VLC cut off the end of my video when transcoding?

I am trying to "bake in" a custom made subtitle file (Advanced SubStation Alpha) for a short (3:46) video. However, despite trying an assortment of commandline options, VLC seems to always cut off the ...
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0answers
89 views

How to concatenate MP4 files without losing embedded subtitle or audio tracks?

I have two MP4 files (mediainfo below), one is a short intro scene, and the other is the primary feature. Now, the primary video contains several audio tracks and embedded subtitles. I want to simply ...
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0answers
46 views

ffmpeg bitrate variating without reason

I got a mp4 video. I just want to split it in 4GB file parts using ffmpeg (to make it writeable on FAT32). C:\ffmpeg\ffmpeg.exe -i "%NAME%.mp4" -n -t %LENGTH% -codec copy "%NAME%_1.mp4" ...
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23 views

Troubles getting -t option with ffmpeg to produce a gif with the right fps and length

I created a movie using matplotlib (the Python graphing package). It is 10 seconds long. I attempted to produce a *.gif using ffmpeg with the following command: ffmpeg -i animation.mp4 -pix_fmt ...
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0answers
143 views

ffmpeg conversion commandline needed

I want to ask for help on converting a mpg videofile recorded from TV to a mp4 format my SAT Receiver can play, (mp4). Below are the format infos of source and target output by ffmpeg -i: All done on ...
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0answers
24 views

Put bitrate atom into MP4 container

When iTunes encodes audio with the iTunes Plus setting, it shows 256 kbps as the bitrate, but actually these are VBR files. For files that were not encoded with iTunes, what tool can modify the tags ...
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0answers
223 views

Microsoft Expression Encoder 4 Screen Capture in Visual Basic

How can I get Microsoft Expression Encoder 4 in Visual Basic to record the screen in wmv or mp4 video?. I've tried with Microsoft.Expression.Encoder.ScreenCapture.ScreenCaptureJob, but the record in ...
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0answers
163 views

DVD Rips not plying AC3 5.1 Audio in iTunes

So I have been trying for months now to get iTunes to play my dvd rips with the AC3 track. I have 2 audio tracks on all my files, just like how you would download a movie from the iTunes store. One ...
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0answers
385 views

How to get a reasonable file size when converting from MP4 to WMV?

I converted an MP4 1080 movie to WMV. The result is a huge 9 GB file. How can I convert it (using FFmpeg) so that the file is decent quality but not huge? Or, how can I split a 9 GB WMV file to two ...
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0answers
143 views

Nero MP4/AAC CRC/EDC?

My MP4 library seems to become corrupt(actual file system issue) from time to time. I believe it was foobar and not the hardrive(was initial though but all tests are ok) as I saw some issue foobar in ...