M4v videos missing audio

Here's a weird one.
I recently upgraded the template theme for my family website (www.ruthenians.net). Most of the videos we use are encoded as m4v files. After republishing the site from iWeb 3 we were able to play these videos on a 3G iPhone with no problems (other than bandwidth). When we tried to play them on either a MacBook or a generic windows 7 box the video streamed without a hiccup - but no audio.
This problem appears to be browser independent. We tried using Camino, Safari 5, Firefox 4 on the MacBook and Firefox 4, Safari 5 and IE 9 on the windows box. No audio. Also, before the theme upgrade, these videos streamed without any video or audio glitches.
I will try to republish, but if these files will play via an iOS device (4.2), why not on an OS X machine?

Looking at the widget for some of the videos the volume level is set to zero. When you add the video to the page make sure the volume is set to the mid point or below and not to zero:
That's in order to protect unsuspecting visitors from getting blasted if they happen to have their sound turned up for some reason. If the volume is set low the visitor can always up their computer's volume if necessary.
OT

Similar Messages

Video- missing audio sound

missing audio content when I record video on ipad. Any ideas on how to fix?

Judyqw3-
Have you verified that your iPad microphone is working? One way would be to install the free Skype iPad App, which has an on-line audio test capability.
If the microphone is not working, contact Apple. If you can demonstrate the problem to the Apple Store Genius, you may get a new iPad on the spot.
Fred

Lion to Snow Leopard missing audio during video chat

Hello,
After upgrading one of my MacBook Pros to Lion, I've been encountering a consistent problem when attempting to engage in a video chat with my parents who are using a MacBook that is still running Snow Leopard.
Prior to the Lion upgrade, video chats worked flawlessly, but after the Lion upgrade, the audio coming from the Snow Leopard machine is completely gone. Video alone works fine in both directions, and the Snow Leopard client is receiving audio from the Lion client, but the Lion client is not receiving any audio from the Snow Leopard client according to the iChat connection doctor.
Not a missing update/firmware issue-
Both machines have all the latest OS updates applied.
Not a hardware deficiency issue-
Both machines were able to engage in flawless video chats using iChat prior to one machine being upgraded to Lion.
Not a bandwidth issue-
MacBook Pro (Lion) is hard wired to an ethernet connection which ties into a fiber optic connection 100Mbit/100Mbit (down/up).
MacBook (Snow Leopard) is hard wired to an ethernet connection tied into a AT&T Uverse connection 24Mbit/3Mbit (down/up).
As a troublshooting step, each machine was tested with iChat bandwidth limitation set to 500k, 1Mbit, and 2Mbit.
Not a ports issue-
As a troublshooting step, both machines were placed into each respective LAN/WAN DMZ.
Not a firewall issue-
Both machines are not running with a firewall enabled.
Not a network configuration issue-
Video chat continues to work flawlessly between Snow Leopard only clients from the same networks over the Internet (tested with additional Snow Leopard clients on my end that have yet to be upgraded to Lion).
Not a microphone or sound configuration issue
First thing checked, double checked, and checked again.
After checking the connection doctor within iChat during one of the problematic video chats, it reveals that "audio quality" from the Snow Leopard client is always 0%.
Has anyone else encountered this problem? Moreover, is there a solution?
BTW, Facetime video calls between all clients work fine, but we all hate Facetime and prefer to continue using iChat.
Any help would be sincerely appreciated.
Thank you.

Hi,
SoundFLower is an Add-on to the System that then appears in the System Preferences > Sound pane as well as being an App.
It allows the Mic (or input device) to be used by two apps at once.
It can also take the output of one app and get in to another.
Sound.
IN certain versions of iChat and with certain Headsets you can have issues if the iChat is set "first" the the System Preferences are set Second.
In both iChat and System Preferences > Sound > Input chose any other device/input other that the propsed headset.
The chose the Headset's mic for the System Preferences
Now set the mic for iChat
Repeat for System Preferences > Sound > Output and the Headphone side.
What is Arriving
Whilst a chat is going on open the Connection Doctor (Video Menu)
On the Stats tab/button you will get a live read out of Bitrate and Framerate and a visual representation of the incoming Video and Audio feed.
Bit rate will vary based on what you pay for and what the Bandwidth Settings is. (you can change it "Live" during a chat and see the Buffering change the rate slowly).
The Framerate should be at least 15fps
Intels can be higher whit 30fps being the top rate.
The Visual bars should be green and 100%
They may vary if your service varies to much.
Buffering
Any Internet service will vary.
iChat has buffering mechanism to cope with this
Earlier versions of iChat were limited by the Quicktime Streaming setting that used to be in System Preferences (Up until Leopard).
Now iChat and Messages can make use of All your bandwidth.
The Buffering will drop frames in an effort to keep up if someone is sending more data than you can handle.
There comes a point when it judges it will lose sense of the Audio due the number of dropped frames and it will cut the Audio.
If the Audio bar is showing nothing then check the Bitrate.
Let me know what you see.
Comparisons with you other computer would be useful.
9:21 PM Monday; October 8, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images."  No, Seriously

All our Video and Audio content are missing.

I upload all our content onto our Itunes site. This morning all our Video and Audio content are missing. i uploaded one to see if they would come back, but nothing. Can someone help us? http://itunes.apple.com/itunes-u/chapel-south-hamilton-current/id392706401 and http://itunes.apple.com/itunes-u/chapel-south-hamilton-audio/

You will also find links to many
free tutorials in the PremiereProPedia that will quickly show you how things are done in Premiere Pro.
Cheers
Eddie
PremiereProPedia (
RSS feed)
- Over 300 frequently answered questions
- Over 250 free tutorials
- Maintained by editors like
you
Forum FAQ

CNBC podcast is missing video only audio?

Does anyone experience CNBC Fast Money, Mad Money, and other CNBC shows podcast is missing video only audio? Is this an issue with the podcast?

iPhone, PC, table, etc ... FastMoney & MadMoney are 'audio' only (iTunes even list it as such) ... 'On the Money with Maria Bartiromo' is listed in iTunes as "video', but it does nt work at all ... I have to believe we need to connect CNBC

Video Drive:Audio Render Files is missing

My Final Cut Express was working. Then I took a break and when I went to use it again I had to register the program. Once I figured where the serial number was I get this message...
"video drive:audio render files is missing. I don't know how to rectify this issue.
Any suggestions?

Hi David,
figured out the issue. the drive wasn't connected. Once I double checked it. the program fired right up. thanks for your help

Missing audio from half my video clips

Hi guys, i'm young & new here so sorry if i'm not very technical. Here goes:
At college we had to film interviews with a range of students. We filmed with a stadard digital camcorder on two days:
* On the first day we filmed with the internal microphone from the camcorder.
* On the second day we filmed with an external microphone.
Upon importing the clips into iMovie, the first day's filming clips are fine but the second day's filming clips are completely without sound! At first I thought it was a microphone issue, but upon watching the playback on the camcorder (and hearing that the audio was perfectly fine there) I realised that this was not the case. My second guess was that it was the computer's fault. But by recieving the same result on two different Macs, I realised this was not the case either.
So my latest guess is that it might be an issue with iMovie. Now, I've tried it on iMovieHD AND the most recent iMovie (with the new format) but the same happens on both versions.
Does anyone have any ideas what has happened/what I might be able to do?
Many many many thanks,
Barney

bhsleadership
I am in the process of preparing to test a sample from your brand and model camera in my Premiere Elements 8.0/8.0.1 on Windows 7 64 bit. I will have the results probably tomorrow morning.
For now I just want to put you through the drill that I do for anyone who says he/she is using Premiere Elements 8.0/8.0.1.
1. Are you working from the 8.0/8.0.1 Update of the program?
http://www.adobe.com/support/downloads/detail.jsp?ftpID=4653
2. Do you have the automatic Background Rendering and AutoAnalyzer features turned OFF.
For Background Rendering option. See Edit Menu/Preferences/General.
For AutoAnalyzer option. Click on Organizer in the row below the blue active Organize header in order to open the Elements Organizer. In the Elements Organizer workspace, go to Edit Menu/Preferences/AutoAnalyzer Options and disable all the AutoAnalzyer options. To return to the Premiere Elements workspace from the Elements Organizer workspace, in the Elements Organizer workspace, go to File Menu/Exit.
Is your computer optimized in spite of the fact that you have a high end laptop? I presumed so but always go to verify, no pile ups of preview files, conformed video and audio files et al.
Looking at the properties of your source media, I see:
video compression = MPEG1
audio compression = MPEG-Layer1 (.mp2)
Frame Size = 640 x 480 (4:3)
Pixel Aspect Ratio = 1.0
Frame Rate = 30 progressive frames per second
With properties like those you are sure to get a red line over that content since there is no project preset with that description.
But, your choice of the default NTSC DV Standard would have been mine also.
I am heading to try to get a quick look at the behavior of the sample video here in my Premiere Elements 8.0/8.0.1.
To be continued.
ATR

No video (black), audio only, from imported .mov files

Bear with me while I explain the whole process to get where I am, which is that in FCE, I am importing .mov files and they are completely black, no video, just audio. When I bring a clip into the timeline and try to render even a small clip, it is still black.
I'm not well-versed in video so please bear with me:
Steps:
1. I received large video files from a videographer
2. the large files could not be imported or played in FCE
3. downloaded HandBrake converter and began converting files. Kept them at the same size, but they were then renamed .mov files.
4. When I open them in QuickTime, they are black - no video. But when I see them on the drive and press spacebar in 'finder' to play them, I can see the video.
5. When I import them into FCE they are black - no video - just audio.
FCE is currently set (in Easy Setup) to: AVCHD-Apple Intermediate Codec 1920-1080i60
Any help would be greatly appreciated. I tried converting one file to mp4 and it works fine in FCE, but this takes a long, long time to convert.
thanks
There is a 2nd issue that may relate to this: I am trying to import JVC .m4v files and I am getting "File error 1 file(s) recognized, 0 access denied, 1 unkown". These files CAN be opened in Quicktime.
FCE HD 4.0.1
Mac OS 10.6.8

I'm having similar, but slightlly different issues.
I have been using FCE 4 on Mac OSX 10.7.5 with Quicktime 10.1 (501.29).
I convert my footage in Mpeg Streamclip (GREAT free program) and set the files to the Apple Intermediate Codec. This makes them work really well in my timeline and I don't have rendering issues or problems.
So, my problem comes when I File/Export/Quictime Movie.
The original file plays fine, but they're 2-3 gbs each, so I put them into Quicktime to convert them to a webfriendly size, but every single time they come out as an audio only file. GRRRR!
Any help would be greatly appreciated. Maybe I'm missing something stupid.
Thanks so much for your help.
Sincerely,
Steve

Video and audio goes out of sync when imported into Premiere

I have some videos ripped from some DVD that an acquaintance made, with an open source program called HandBrake, with the default "high profile" settings. When I play it both in VLC and in Quicktime, it plays just fine, but when I import it either in Premiere or in After effects, the video and audio goes out of sync (the video ran faster than the audio and when the video stops, the missing audio is trimmed).
Video info according to Premiere (in Spanish but you may get the meaning).
Ruta del archivo: [...].m4v
Tipo: Película MPEG
Tamaño de archivo: 667,7 MB
Tamaño de la imagen: 720 x 480
Profundidad en píxeles: 32
Velocidad de fotograma: 29,97
Formato de audio de origen: 48000 Hz - comprimido - Estéreo
Formato de audio del proyecto: 48000 Hz - Punto flotante de 32 bits - Estéreo
Duración total: 00:30:35:15
Velocidad media de datos: 372 KB / segundos
Proporción de píxeles: 0,8889

"HandBrake, these days, is almost entirely about H.264 video, aka MPEG-4 Part 10. HandBrake is migrating to quality-based encoding."
Hmmm. I use HC Encoder to make my DVDs because it's the only free encoder I've found with the much more professional Constant Q encoding option. But HC Encoder doesn't do HD sources for Blu-ray, so I've been wondering if I'd be stuck with the lame-*** consumer CBR and VBR options most encoders provide (including Adobe - hint, hint) when I eventually start working in HD. This is a very interesting program, Handbrake. I will have to check it out.

After years of owning all things Mac, I am finally trying to use iChat, and can't get it to work. I see my buddy, but all I can do is send a message--the video and audio chat icons are gray, as is inviting to a video chat under Buddies.

After years of owning all things Mac, I am finally trying to use iChat, and can't get it to work. I am using gmail, and I see my buddy (no camera icon next to her name), but all I can do is send a message--the video and audio chat icons are gray, as is inviting to a video chat under Buddies. My buddy has the same problem as I. We are able to do video chat through gmail, but I had hoped to use iChat. I am using OS 10.6.8, iChat v. 5.0.3. What am I missing?

HI,
iChat will Video chat to another iChat in a Jabber Buddy List (Google run a Jabber server for GoogleTalk)
However it will not Video to the Web Page login to iGoogle or the Web Mail Page login. (where people can Google Chat as it were in a Web Browser).
Nor does it video to the Google Talk Stand alone app for PCs or any other Jabber apps on any platform.
iChat uses a connection Process called SIP (Session Initiation Protocol) which is also used by other VoIP devices.
Jabber/XMPP invited the Jingle Protocol for Jabber Applications.
Google have included this in their Standalone app and the Plug-in for Web Browsers on both PCs and Mac (you can get this as a Standalone Plug-in or as part of Chrome)
More on this here This article has been changed several time in the recent months. It now claims a greater involvement by Google in writing the Jingle Library (Although now Google's version does not work with the others)
This tends to mean that using the web Login to Google to Chat also cannot video chat to other Jabber apps that are using Jingle.
If your Buddy is using iChat then check the Video Menu has two items to Enable Camera/Video chat and Microphone/Audio chats are ticked.
In the View Menu the Show Status Items should be ticked (Selecting them toggles the tick and the function On or Off)
It could be Internet speed but at this stage I would doubt this at this stage.
10:27 PM Saturday; January 21, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Video and Audio cut off in Premiere CC after Syncing in PluralEyes 3

So I sycronized this sequence in PluralEyes 3. I exported it as an XML for Premiere Pro. I imported the XML into Premiere Pro CC. When I oppened up the sequence the end off all the clips are missing audio and video. More is missing for the longer clips. You can see how the clips are blocked off. I have video from a T3i and a K-x and audio from an H4N. Running OSX Mavericks on a Macbook Pro 15in Retina w/ Nvidia 650M 1G. Anybody have a solution or know why it's doing this?
Thanks

Figured out that this happens if you import your assetts into premiere. Create a sequence. Export an XML from Premiere to PluralEyes. Sync it. Create an XML for Premiere and then import it into Premiere.
It works properly if you start in PluralEyes with your assetts and then Impot the synced XML into Premiere. Its a shorter and smarter way to do it anyway. I was trying to do it the way I used to on PC.

Video and audio formats for iPad

Hey, guys.. I've tried searching this up in the forum but didn't have any luck with that..
I can't seem to upload my movies and songs into iPad... I tried converting my movie into .mov and .mp4. They can both be imported into my iTunes library but when I drag it to the iPad tab it says it cannot be copied because it cannot be played on the iPad. And some of my albums just can't be imported.
May I know the preferred format for my movies and my songs? And what could be the problem with my importing..
Thanks heaps.

Here are the spec for video and audio for the iPad:
H.264 video up to 720p, 30 frames per second, Main Profile level 3.1 with AAC-LC audio up to 160 Kbps per channel, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; Motion JPEG (M-JPEG) up to 35 Mbps, 1280 by 720 pixels, 30 frames per second, audio in ulaw, PCM stereo audio in .avi file format

Firefox doesn't play video and audio, cann't download anything!

A very strange problem occurred a few days ago. I didn't pay attention on it at first ( I thought it was caused by my provider) but now I found that it's a real problem. Firefox doesn't play video or audio. For instance, it starts loading and that's all. The same is with playing music. In addition, I can't download any files and view a big image as quick as early.
What is more interesting sometimes Firefox just begins to work in ordinary way.

There is no single codec for movies that have .avi extensions. AVI is a container format, not a specific type of file. An AVI movie may use one of the Indeo codecs (there are at least four that I'm aware of, none of which have been ported to Mac OS X) or one of the various flavors of DivX, among other possibilities. You'll have to find out what codec was used for the movies you want to view to determine what you need. Note that not all codecs for the various .avi movies are available for QuickTime.
If you want to try "hit and miss", you can try the codecs at http://www.divx.com/ and http://www.3ivx.com/ and see if one of them will work for you. Perian, which rolls several codecs into one package, might also work.
If you just want to play the movie any way you can, you can also give this player a try:
http://www.videolan.org/vlc/
Forum Tip: Since you're new here, you've probably not discovered the Search feature available on every Discussions page, but next time, it might save you time (and everyone else from having to answer the same question multiple times) if you search a couple of ways for a topic, both in the relevant forums, in the User Tips Library and in the Apple Knowledge Base before you post a question.
Regards.

Syncing video and audio

I have been syncing video and audio into a sequence and using those sequences in a new master sequence. Is that the right way to do it? Is there a way to have the video and audio in a useable clip? I could not find this information in the manual, but if I missed it can someone refer me to the chapter that covers this topic.
Thank you

you can set in and out points for both the video and audio clips in either the viewer or in the browser, then select the two, right click - merge clips (or Modify/Merge Clips if you prefer the menu.)

Mpeg 2 file video missing

when i export video and audio from premere pro 5.5 to mpeg 2, i get only the audio and video is missing. help pls.

All good guys.
The Windows media player didn't come with video player! What ????
I got to download it seperately.
All sorted .

M4v videos missing audio

Similar Messages

Maybe you are looking for