Audio of .mp4 movie files getting distorted by 1 hour mark.

I converted some of my fave movies from DVD to .mp4 file format that my iPod supports. After I did so, I copied several flicks in .mp4 format to my iPod. Each of those movies is at least 2 hours in length. But the problem with iPods playing .mp4 vids is after 1 hour mark of the video, the audio gets distorted up the rest of the movie. My friend with iPod vid also experienced the same problem. We found out that if the movie is in .m4v format, the audio of the same movie length is smooth and clear. This make me think that iPod videos has bugs playing .mp4 video format that has more than an hour in length. Ironically, when I play .mp4 format in Quick time and iTunes (in my PC), the audio is smooth. Does anyone have an idea about that? I appreciate for the answer. Really. Thanks!
AMD Athlon 1.4 GHz; 512 MB RAM Windows XP Pro My USB is not 2.0

I think is the contrary because the clip browser copies all the foleders needed. I got this opinion from another forum that copies into Final Cut:
"My workflow is to create a hard drive folder for the project, then use Clip Browser to import the clips from the card. I review the clips, labelling them, adding logging notes, setting the status and putting in essence marks as needed (the number of characters available for the essence mark description is fairly limited). I then open FCP, create and save a new project then call up XDCAM Transfer. I select the project folder and it will pull in all the clips. I then filter for OK status, occasionally create subclips then import. The clips come over to the bin, with their names and with the essence marks converted to markers. Obviously there are backups taken - I've not mentioned them."

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Extract audio from MP4 movie file to iTunes library

I downloaded a 5-minute movie, it's now sitting on my desktop as a mp4 QuickTime file, opens and plays fine. I want to turn the audio soundtrack of the movie (one complete song) into an mp3 in my Music library, so I can just play the song on my iPod without opening the movie file (I have an older iPod 60GB that doesn't play movies). Please advise, thanks

Open the movie in the QuickTime Player and Select Export -> Sound to AIFF.
Drop the exported AIFF file into iTunes.
Make sure the iTunes CD Import Settings in Prefs is set to the MP3 encoder.
Right-Click on the AIFF file in the iTunes Library display and select Create MP3 Version.

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Open the movie in the QuickTime Player and Select Export -> Sound to AIFF.
Drop the exported AIFF file into iTunes.
Make sure the iTunes CD Import Settings in Prefs is set to the MP3 encoder.
Right-Click on the AIFF file in the iTunes Library display and select Create MP3 Version.

Premire only import audio in a .mov file, how can i get the video?

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Wild Guess:
If that is not the solution:
FAQ: What information should I provide when ask... | Adobe Community

Imovie wont import an mp4 movie file

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.mp4 is just a media-container, or wrapper.
it doesn't tell us nor iMovie what's inside.
open the .mp4 with the Quicktime Player, hit ctrl-i .. tell us about 'Codec'

My mp4 movie files used to transfer from computer to iPad but now they will not Tried dragging and dropping to iTunes library but won't work anymore Plse help

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Howdy Anastasia,
I was thinking about why the songs arent importing and I feel that its either, A) the format of the files has changed since you last imported them, or B) you may need to rebuild the iTunes library.
Here is an article about doing just that:
iTunes: How to re-create your iTunes library and playlists
http://support.apple.com/kb/ht1451
Re-creating the iTunes Library file
Note: After re-creating your library, any devices that you sync with iTunes (Apple TV, iPod, iPhone, iPad) will see your iTunes library as a new library and will completely resync. The next sync with such a device will take longer and may reset some options since your rebuilt library isn't familiar to the device.
1. Quit iTunes.
2. Locate your iTunes folder (this is the folder that contains the iTunes Library and iTunes Library.xml files).
Operating System
Default location of iTunes Folder
Mac OS X
/Users/[your username]/Music
Microsoft Windows XP
\Documents and Settings\[your username]\My Documents\My Music\
Microsoft Windows Vista
\Users\[your username]\Music\
Microsoft Windows 7
\Users\[your username]\My Music\
3. Open your iTunes folder.
4. Drag the "iTunes Library.xml" or "iTunes Music Library.xml" file to the Desktop. If neither is available, learn how to add files back to the Library (because the XML file is not available, playlists and other information will not be available).
5. Drag the following file from your iTunes folder to the Trash:
Mac OS X
"iTunes Library" or "iTunes Library.itl"
Microsoft Windows
"iTunes Library.itl"
6. Open iTunes.
Important: Do not add any content into iTunes at this point (such as by purchasing something from the iTunes Store).
7. Choose File > Library > Import Playlist.
8. Navigate to the "iTunes Library.xml" file on the Desktop.
Mac users: Click Choose.
Windows users: Click Open.
If your Podcasts list in iTunes is empty after following these steps, learn how to add them back into iTunes.
Regards,
Sterling

While watching an iTunes movie from my Apple TV, why does my movie stop playing at the 1 hour mark? I'm assuming I have a setting causing this to happen, but I have no idea what setting needs to be changed. Can someone help me?

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It's right at an hour (consistently), but the computer goes to sleep prior to that. It's as if iTunes goes to sleep. Also, it wasn't always this way. Originally, the movies played through without interruption. At some point, I guess a setting was changed, and now I only get an hour. Also. My energy settings are set to go to sleep at 10 minutes.

Adding extra audio tracks to an mp4 movie file?

I'm new to using iMovie or similar programs for converting/merging video and audio, so any help that steers me in the right direction is greatly appreciated.
I made an mp4 file of a movie, and want to add an audio track to the mp4 file. The audio track is an mp3 file. However, in order for me to have the new audio track sync up with the video, I need the audio track to start playing before the movie begins. Please note that I'm not interested in burning this to a DVD; I just want a new mp4 file with the extra audio track.
With this in mind:
1) What program would be best for merging an mp3 file with an mp4 video file, plus adding extra time to the video in order to accommodate the extra time in the audio track? I have iMovie HD 6.0.3, and the latest version of Handbrake, unless another program is better for this task.
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As I said, I'm new to using these programs, so if you need me to clarify anything, please ask and I'll do my best to help out. Thanks!

QuickTime Player Pro ($30) can do the job in just a few seconds. Its .mov container can have up to 99 tracks.
Open the .mp4 file, select all and Copy.
Switch to the .mp3 file, move the playhead to the needed start point and paste in the entire .mp4 file.
The hardest part is a pencil and paper to note the time of each file to find the proper insertion point.

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Codec : icod
I generally defer to folks like QuickTimeKirk on these sorts of matters, but I think that's the source of the problem. That's the Apple Intermediate Codec, an editing codec used on Macs:
http://discussions.apple.com/thread.jspa?messageID=7240374#7240374
... and it won't display on a PC:
http://discussions.apple.com/thread.jspa?messageID=7304343#7304343
Can the provider of the file re-export it using a different video codec for you?

Can't save MP4 as a .mov file get error message below

The error message reads: "This movie cannot be saved"
Below it says:
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Probably not a video "editor" but a video "converter" application. My guess is iSquint (now out of business).
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Losing audio when editing .mov files...

I have 4 .mov video files that are parts of 1 video. I can't get them into Apple TV, but I wanted to join them together in one video, anyway. I'm not having any luck doing that. (I have the right to have these videos.)
I can bring them into a sequence in FCP 6.0.6, and even export them in a form that I can put on my Apple TV. But I lose the audio, which makes them useless.
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I have the latest iMac 27" with the i7 processor and two internal drives, so I can't see why they'd have to be rendered first
FCP only works natively with formats listed in the Easy Set Up list. It does NOT work natively with many formats that are intended for final delivery like MPG-4, h.264 and others. If you import those types of files into FCP they WILL need to be rendered. But it is better to first convert those files before you import into FCP. That fact that you can't hear the audio may indicate you're using a muxed format that will need to be demuxed for editing.
This information is easily found in the User's Manual. It sounds like this would be a good time to read the basics.
-DH
Message was edited by: David Harbsmeier

Replacing audio in mp4 movie clip

For two days now I'm trying to find a way to easily replace audio track in my mp4 movie clip without re-encoding the whole thing. I found an answer how to do it in QuickTime Pro and some other software, but no luck with Adobe Premiere Pro or Audition or other Adobe CS6 Production Premium software which I own. Can somebody please tell me how to do it? Is it even possible
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Hi Kevin,
There is a way! I just figured it out!
I have my extracted audio in the clip bin where it should be after I "edit audio in Adobe Audition." I then unlinked just my audio clips with the track selection tool as they were on the same track. Then I relinked the audio to the extracted enhanced audio file and BAM! It worked!
Figuring this out just saved me hours possibly days of manually replacing these audio clips!

Running my .mp4 Movie files from an External Drive

I have quite a few familiy movies etc that I've put together using FCP and I've sent these to itunes as .mp4 files which I then playon our TV through the apple TV module.
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No, Michael Allbritton's (MA) method just copies the files you have selected to consolidate to the location you have temporarily designated in preferences. MA didn't mean "library" as being the library file (library.itl) but the "collection". Your files would still all be managed from the same iTunes library file on your internal drive but the movie files you selected to consolidate would now be referenced to their new location on the external drive.
Note the difference between these two methods:
iTunes: How to move [or copy] your music to a new computer [or another drive] - http://support.apple.com/kb/HT4527
do not confuse moving your whole folder and library with moving just media files as in
iTunes for Mac: Moving your iTunes Media folder - http://support.apple.com/kb/HT1449
Moving your movies will only apply to your current collection. If you add movies in the future you will need to make sure they are on the external drive, then hold down the option key while dragging the file to iTunes to tell iTunes to not copy it to your internal drive (which has been re-set as the location for your media folder after the move directions).

XBMC: HDMI audio starts out OK, then gets distorted after few minutes

Hi,
I have posted about this on the XBMC forums, but one of the developers kindly informed me that they do not support XBMC on Arch Linux in any way, so I should take my queries elsewhere. I am hoping that someone here might be able to shed some light on my issue.
I am trying to use XBMC 13.1 (xbmc-13.1-2) with Samsung EH5300 32" Smart TV (2013 model) over HDMI connection. The HTPC computer is AMD-based (AMD A4-5300 APU, which includes Radeon HD 7480D GPU), and runs an up-to-date Arch Linux (last full system upgrade on 2014-06-26). I am using the open source "radeon" driver (xf86-video-ati-1:7.3.0-1). Everything has been great except the sound:
The sound starts out fine, but a few minutes later it begins to get distorted. At first it sounds like reverb affecting voice only, but with time the distortion increases until it sounds kind of cued TV noise. If I restart the video, the sound works again for a while. If I change options in Settings -> System -> Audio Output, like the number of channels or pass-through, the sound is again good for a little while. If I enable or disable "Stereo Upmix" or change audio stream from the "Audio - Settings" dialogue window available during video playback, it too seems to "reset" the sound to sounding normal for a while.
Has anyone seen something like this?
I have tried different videos, and it seems like HD videos are affected more than SD videos, starting with distortions only a few minutes in (except the one Xvid video, which was fine for 15 minutes). Some SD videos are completely fine, some start having distortion issues only after 20 minutes or so. Judging from video information, if the video uses 5.1 channels (all HD videos fall in this category), it definitely gets distorted; if a video only uses 2.0 channels (like the SD videos), some are fine while others get distortion later on. I have "Number of channels" in Audio Output settings set to 2.0. Changing this (or any other audio settings) has not affected the distortion.
Following Arch Wiki: Radeon note about HDMI audio, I tried adding radeon.audio=1 to the kernel line; this did not solve the issue, just added some visual glitches.
In the XBMC debug log I posted, the distortions happen at around 17:26, though there is absolutely nothing logged at that time, even though I enabled "Verbose logging of AUDIO component" in the Debugging settings. The video I was playing there showed the following in the information window: 720 H.264 dts 5.1 16:9.
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Hi GDykes,
OK Imagine that Connection speed from your ISP is like an empty freeway. You can go full tilt (upto that road's speed limit)
Bandwidth is like a busy freeway where you only get to go as the bit you are in allows.
Reducing the Bandwidth in iChat or in the System Preferences > Quicktime > Streaming tab is like a vehicle that has a maximum speed that is slower than the speed possible on the freeway.
10:02 PM Friday; July 6, 2007

Video freezing, audio continues with .mov files

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This sounds similar to what I reported in, "Problem viewing video in QuickTime 7.5.5" http://discussions.apple.com/thread.jspa?threadID=1864506&tstart=105
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--Martin

Audio of .mp4 movie files getting distorted by 1 hour mark.

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