Dolby Digital or AC-3 from MP4 files

I have MP4 files which I have made that have one stereo soundtrack and one Dolby Digital soundtrack. Is there any kind of plugin so that the latter can be played by Quicktime?
I have tried VLC as an alternate player. The AC-3 soundtrack does not lock this app up (as it does with Quicktime), but VLC will not play it in surround, either.
I've tried this with my iMacG5, my iBook G4, and my new Mac Mini. I'm using an M-Audio Transit with the Mini. It works fine for AC-3 from DVD Player but not with MP4 files with pass thru AC-3.
Does anyone have a suggestion for any other "super tight" video encoding that will preserve multi-channel sound? (My understanding is that H.264 only supports 2 channel sound.)
Thanks.

In the Properties for: Built-in Output under "Audio Output" on the right I have:
Source: Digital Out
Format: 48000.0 Hz 2ch-24bit
Is that OK or should I change it to something else?

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Live streaming from mp4 file

Hello everybody,
I know that's a noob question (as I am) but i can't make it run.
I have an mp4 file and the folders structure is....
Application/test/sources/_definst_
in _definst_ source.mp4
in test folder main.asc file
main.asc file contains
var mystream;
var intervalID;
application.onAppStart = function(){
mystream = Stream.get("mylive");
intervalID = setInterval(startPublish,100); / checking every 100 ms if we can start publish
function startPublish(){
if(checkTime() == true){
clearInterval(intervalID ); //clearing the interval so that startPublish won't be called again
myStream.play("mp4:sample.mp4",0,-1,true) //starting the live publish of recorded file sample.mp4
function checkTime(){
myDate = new Date();
if(myDate.getHours() == 21) // This means its 2 PM
return true;
else
return false;
All this stuff doesn't work. When I go to the admin panel and select test under new instance the stream appears on the left side but if press enter on _definst_ it disappears from the column.
What's wrong?
Is possible with this code run that video on ios devices?
Thank you very much

Hi,
By default the FMS looks for the media under <application>/streams/_definst_/ and not sources/_definst_/. In case you want to specify the media location then copy the Application.xml from the vod sample application and edit the Streams tag. For eg :
<StreamManager>
                    <VirtualDirectory>
      
       <Streams>/;<root_install>/applications/vod/sources/_definst_/</Streams>
                    </VirtualDirectory>
</StreamManager>
This should solve your problem. The main.asc is fine.
Hope this helps.
Thanks,
Apurva

Problems exporting and playback the MPEG2-DVD videos, from .MP4 file!

I have PremiereProCS4 v.4.2.1 installed on this PC:
OS:WindowsXPProx64Bit; CPU:IntelCore2Quad Q9650; RAM:4GB DDR2 PC2-6400 Kingston; HDD:3x500GB WestrnDigital Caviar Green; VGA: Sparkle GeForce 9400GT 512MB.
I have downloaded an AVCHD file .MTS 1920x1080p 25p, made by Canon HF100 AVCHD camcorder, from this source (.rar file):
http://www.megaupload.com/?d=RWR5MNYHhttp://www.megaupload.com/?d=B9ZDX2RZ
The videos in question called: "25pf_1.25_f1.8.MTS" playback and export from Premiere as MPEG2-DVD very well.
I playbacked it on Premiere on the second Monitor as "OutputDevice". All Ok.
I playbacked also the DVD made with EncoreCS4, on the external DVD set-top-box-player. All OK.
I downloaded also another clip 1080p 25p, converted as .mp4, from the same author, imported then in Premiere with Preset "XDCAM EX 1080p 25p" (470MB) :
http://www.megaupload.com/?d=B9ZDX2RZ
No problems with playback.
Exported as MPEG2-DVD PAL "Lower Field First".
Opened in NeroShowTime Player: the video have a serious interruptions of the playback, some moments plays back-and-forward, and it isn't fluid at all!
I tried to create a DVD with EncoreCS4 and played it with DVD Player set-top-box, and the result is bad, and is the same as the playback on my PC with NeroShowTime Player. It present the back-and-forwars interruptions.
I tried also to create an AVCHD Project 1080p 25p and import the .MP4 file, but the problem persists !
After exporting them, and played-back on NeroShowTime and on Set-Top-Box Player, the video have strange behavior, and plays back-and-forward!
1) What Preset in Premiere should I use to editing, for this .MP4 file format, (filmed with Canon HF100 AVCHD and converted from original .MTS format to .MP4 format)?
2) Is this a transcoding problem?
3) Is this an exporting MPEG2-DVD PAL field-order issue?
This is my bad exported MPEG2-DVD converted file, available for downloading:
http://rapidshare.com/files/337858976/Canon_HF100_1920x1080p_25p_01_AVCHD25p.m2v.html
Strange! With .MTS files I haven't any exporting problems at all!
Please response me hurry!
Many Thanks!
Horsepower.

OK! Sanyo use a bad format.
But about JVC GY-HM100 Professional:
I know this model very well!
It records to .MP4 XDCAM_EX at the same manner of Professionals Sony Camcorder such this: Sony XDCAM_EX model "PMW-EX1" price €6.478,80.
This JVC GY-HM100 camcorder is not tha same as Consumer JVC camcorders.
It doesn't record MOD or TOD files.
It records .MP4 files editables in Premiere with XDCAM_EX "Preset"!
See those details:
http://pro.jvc.com/pro/attributes/HDTV/manual/editing1.html
http://pro.jvc.com/pro/hm100/content.jsp?model_id=MDL101845&attributeId=2&feature_id=02
See also this page:
http://pro.jvc.com/pro/hm100/content.jsp?model_id=MDL101845&attributeId=12&feature_id=12
The first Brochure called "A Guide to the Most Efficient Workflow with ProHD
(6 pg brochure)" explain very well the .MP4 - XDCAM_EX format and the Editing process that should be with Adobe PremiereProCS4.
I have inspected the downloaded .mp4 file in question, and GSPOT v.2.70a reading this:
-CONTAINER:
     isom: MP4 Base Media v1 [IS0 14496-12:2003]
-VIDEO:
     CODEC:avc1
     NAME: H.264/MPEG-4 AVC
-AUDIO:
      CODEC: mp4a: MPEG-4 AAC LC
1c) Is this an AVCHD video codec?

Live! 5.1 SB0100. Can decode Dolby Digital 5.1 (AC3) from S/PDIF-

Hi,?i have a Sound Blaster Li've! 5. model: SB000. This can decode AC3 from S/PDIF IN and out to analog outputs?. My idea is connect Xbox 360 to S/PDIF IN and decode Dolby Digital to analog outs. Thanks.

Nope. The original EMU0K chip always had resampling enabled on S/PDIF input so that if there was any clock drift at all bits could change and damage the AC3 encoding. The EMU0K2 (Audigy) chip was changed to somehow allow bypassing the core clock so the S/PDIF sample values could get into memory without alteration.
-Dave
?[email protected]

Incompatible audio from MP4 file

I have several business partners that are supplying me with .mp4 files from Adobe live flash media encoder, using the h.264 codec, but the only audio choice is for an MP3 codec. this combination displays/plays no audio in Premiere Pro CS5. Only after I use handbrake to convert the audio to the AAC codec with it play in the Timeline.The upgrade to the main concept plug-in for AFMLE will allow for this, but the business partners are reluctant to spend the $
Question: is CS6 compatible with the default of FMLE with h.264 and the .mp3 audio? if so I will upgrade.
anyone else see this issue when using .MP4 files?

You can always install the trial and see for yourself.

Embedded subtitle track from MP4 file

I've been pulling my hair out over this for a few days now.. lots of the documentation "hints" that this is possible but i am so far unable to achieve it.
Is it possible to read an embedded subtitle track from a MP4 file using OSMF?

Thanks Jim
I figured that would work but for some reason the resulting files did not play correctly--Alternatively I used Mpegstreamclip -opened the video I wanted to erase audio track from--- clicked on "edit--delete audio track" then clicked "save as" and this finally accomplished what I was trying to do--Now have a copy of the .mp4 file wo audio
Thanks for all your help--Hope this thread helps someone in the future
Peace
Tony

Loading Knob Digital Display Text Labels from External File

I have a knob interface. I display it on the instrument's front panel with the digital display.
The knob controls the settings on an external GPIB switch. The value of the 6 devices selected changes. I want to see the numbers 1 thru 6 on the knob, but the knob's digital display needs to show something like "12.5-13.5 MHz BPF".
I want to load the text visible in the knob's digital display from an external file located on the machine. I will not have the possibility of changing the VI for each location.
Can you do that?
If not, would an a case or event structure containing a text indicator, with text values read in from a file, be the best apporach?
73/gus

If you don't have 8.0 and XControls, you can do something like the attached. I edited the knob control and then replaced the digital display with a text ring.Message Edited by Dennis Knutson on 04-21-2006 12:32 PM
Attachments:
Knob with text ring.vi ‏30 KB

Remove sound from mp4 file?

I want to remove all the sound from a video that is in mp4 format. How do I do this?

How to read each "word" in the input file?Well, you'll need to "tokenize" the file as your reading it in. Look at the API docs for java.io.StreamTokenizer and see if that's appropriate for your application. If not, you can simple read the data in character by character and have some logic that decides what is a word...

Adobe Media Player encoding F4V from MP4 file

I have been encoding with Adobe Media Encoder CS4 and exporting f4v files. I understand the settings pretty well and have been successful with the process until someone sent me an mpeg4 video. When I bring into Adobe Media Encoder CS4 it will not recognize the video, but it will encode the Audio.
My research shows that unless the Mpeg4 video is from a Camcorder it may not import.
Is that Correct?
I do not have the source for these Mpeg4 files, might it be some contatiner Issue?
Anyway around this besides having to import to FCP or Quicktime Pro to export as a .mov file?
If I do import into FCP or Quicktime Pro, wont that decrease the quality?
Thanks, Bruce

I having the same issue.
Any insight on a solution?

Can't TAG Mp4 files with Dolby Digital AC3 5.1

Hi everyone, I use iTunes to TAG all my Mp3 and Mp4, I have over 100,000 Mp3 tagged with iTunes without no problem and over 2,000 DVDs concerts, TV series, etc in Mp4 format tagged also with iTunes without any problems, all my Mp4 til now have 2 channel stereo sound.
My problem now is that I'm making some Mp4 movies with dolby digital 5.1 and this Mp4 play perfect in iTunes and QuickTime ''but'' I can't TAG them in iTunes because of the AC3 5.1, I'm sure of this because everthing made in 2 channel stereo have no problem to TAG in iTunes. If I TAG them its seems in the begining to write the TAGs but if I clear iTunes and then re-load again the files the TAGs dissapears.
I use MAC and PC. I use Nero Recode 2 to make my Mp4. I have the last version of iTunes and QT.... I have noticed that Winamp can write the TAGs without any problems and stays there but what I need is to iTunes recognize that TAGs because I run all my libraries in iTunes
Thanks in advance, sorry for my english.

Anybody please, any answer can help me please... Is that no body has experience this same problem?
If iTunes can't support TAGs with 5.1 is possible to fix this in the next update?
Regards

Will iTunes or QuickTime Player let you burn an mp4 file onto an audio CD?

I want to burn some MP4 videos (i.e., the audio portion only) onto audio CDs; I guess that would mean converting to .aiff files, right?
Can this be done in either iTunes 10.6.1 or QuickTime Player 10.0? I'm running Mac OS 10.6.8 on a Mac mini, if that makes any difference.
Or do I have to find some third party software to do the conversion and then burn the CDs?
Thanks in advance for any advice you can offer.

I want to burn some MP4 videos (i.e., the audio portion only) onto audio CDs; I guess that would mean converting to .aiff files, right?
Depends on how you plan to play them back. AIFF can be played on almost any commercial audio CD player. MP3 files can be played on most current CD players. Apple Lossless or AAC could be used if playback is through your computer. The choice is really yours.
Can this be done in either iTunes 10.6.1 or QuickTime Player 10.0? I'm running Mac OS 10.6.8 on a Mac mini, if that makes any difference.
Yes, but the work flow may be different depending on which software and audio compression format you use. E.G., QT 7 Pro could extract the MP4's AAC audio track directly to an new file without conversion if AAC is your target format. As previously mentioned, QT X could be use to recompress the MP4 to an audio only AAC file. The free MPEG Streamclip or QT 7 Pro apps could be used to convert the MP4's AAC directly AIFF files. Converted or extracted AAC files could be added to your iTunes library where iTunes could create and burn a "Playlist" of such files to CD using AAC, AIFF, Apple Lossless, MP3, or WAV compression formats dependin on your playback requirements. (Unfortunately, iTunes will not directly extract and reprocess/burn the AAC audio directly from MP4 files already in its library.

Metadata in video (mp4) files

I just converted 14 years of DV Video-Material to mp4 clips using handbrake and imported the clips in a newly created LR3 catalogue.
So far so good. After tagging the clips with keywords and descriptions I tried to save the metadata into the clips and here the proble starts.
As far as I know mp4 files are capable to carry metadata. When I use itunes or other programs like SimpleMovieX I can save and read metatdata directly from mp4 files. But in LR3 none of this data is displayed when I try to import a mp4 file already containing metadata or when I try to read metadata from an already imported file. It seems like LR3 is solely managing this kind of information in its database and there is no data interchange between the metadata section of the mp4 files and LR3. My expectation was obviously different.
Does anybody made similar experiences?

Chris_Germany wrote:
It seems like LR3 is solely managing this kind of information in its database and there is no data interchange between the metadata section of the mp4 files and LR3.
I think that is correct.

X-Fi with Digital I/O Module = no Dolby Digital Out

i have buy the Digital I/O Module for my X-Fi Extrem Music and i have connect with a Koaxial Cable on my Kenwood 9060 Recei'ver. the Problem is i have only Stero signal but not Dolby Digital. in den Option from the X-Fi i have select in the Dolby option "Dolby Digital Bitstream Output" on. by Digital E/A i have select 48Khz and by FlexiJack Modus i have select Digital E/A. Speaker Settings i have select 5.. u use a Divx Movie with Dolby 5. Sound and view this with Media Player Classic with SPDIF Out. why can i hear only Stereo and not Dolby 5. on the Kennwod ?

See the sticky at the top of this forum, http://forums.creative.com/creativel...message.id=270
Basically the root cause is that CL cards don't have a D/DD encoder. The bitstream option affects what happens w/ the bitstream read off a DVD.. If the sound was created by the a CL card it will be stereo at best.

Cmss 3d doesnt work with dolby digital live pack

0cmss 3d doesnt work with dolby digital li've pack4 From the page of Dobly Digital Li've pack
"Stereo content (MP3, WMA, CD audio or games) that is transformed into 5. surround sound using Creative CMSS-3D or DTS Neo:PC can also benefit from this encoding scheme that will further enhance the entertainment value of your Sound Blaster X-Fi."
with that said, i bought the pack that has both DDL and DTS Interacti've. but while playing music my reciever only gets front left and right channels. No sound comes from the center or rear channels. This is with CMSS 3D on. With analog all 5 speakers work. Before installing this pack, my reciever got PCM input from the optical line. Thus only the front channels working. now with this pack the speaker recognises that the signal is Dolby or DTS yet, only the front channels work. in short there is no difference with this pack.
could someone please explain to me how to get the whole 5. working with Dolby or DTS
thank you
Sound Blaster X-Fi Platinum, Driver 2.8.003
Windows 7 x64 Build 700

thank you for the promp reply
the problem was with the reciever. just a change in setting was all it took
but now i have anoter problem
how do i bypass dolby and dts signals from movies to my reciever
before i simply had to set spdif out as default sound device and set ac3filter to spdif passthru
now the driver panel tells me that SPDIFOut will be exclusvely be used by DTS Interactiv. it doesnt pass the signal through from Media player classic or powerdvd.
am i expected to turn off DTS Interacti've or DDL when watching a movie and needing to pass on the signal?

Encoding Dolby Digital 5.1 (AC3) sound in MP4 files using AC3 pass-through

Looking for an application that will encode Dolby Digital 5.1 (AC3) sound in an .mp4 container using AC3 pass-through for playing videos with surround sound on ATV.
Handbrake is out of the question because I run Tiger. The Tiger version cannot do AC3 pass-through.
Visual Hub is no longer available.
Any other options?

You may need Apple's MPEG2 QT plugin as well for MPEGStreamclip.
Also, consider if running windows in parallels/Boot Camp etc that there's a windows version, and possibly a linux version.
VisualHub code was released open source - Google FilRedux and PunyVid (iSquint derivative). Not tried either though.

Dolby Digital or AC-3 from MP4 files

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