.mp4 video clip only plays audio
by Patrick Fesler
on
Jul 2, 2008 at 6:15:16 pm
Alright, so I'm using Sony Vegas Pro 8b. I imported my .mp4 videos into Vegas and when I try to preview them or put them on the timeline they only play the sound/audio part of the clip and it doesn't show video at all. I know for a fact that these clips have both video and audio because they play fine in Quicktime.
Re: .mp4 video clip only plays audio by Patrick Fesler on Jul 3, 2008 at 11:01:01 pm
I downloaded XviD and it didn't fix my problem. Do I have to configure XviD in some way to get it to show the video part of my .mp4 files? And I also updated Quicktime like you said...
Re: .mp4 video clip only plays audio by John Rofrano on Jul 5, 2008 at 3:29:08 pm
Vegas cannot edit any file just because you have the codec for playback. There are certain video formats, particularly some DivX formats, it simply won't edit. If this is the case you'll need to convert your video into a format that Vegas can edit.
First you need to know what code is being used. There is a handy utility called GSpot that will tell you which video and audio codecs are used by a file but more importantly, it will tell you if you have these installed. Once you know what video codec the file is using you can do one of two things. If the codec is not installed you can install it and see if Vegas can open the file. If that doesn't work then you need to use some other utility like VirtualDub or SUPER to re-encode it into a format that Vegas can handle.
Re: .mp4 video clip only plays audio by Travis Howland on Jul 31, 2008 at 3:24:42 am
I have had this problem when adding .MT2S files (AVCHD format). The weird part is that it happens with about every 10th file. The other nine show both the video and audio track.
Also, it's happened on two different machines (one XP, one Vista). These files are coming from a Canon HG10 camera.
Re: .mp4 video clip only plays audio by Agustin Ciccia on Sep 11, 2008 at 2:28:53 pm
Yes please, I DO NEED HELP!!!
When opening files with vegas 8.0, the first file always reads only audio, although it has the video...All the rest of the files are just fine.
Example: I film a 45 minute speech.
My Sony HDR-SR1, saves it like 4 files .MTS files (about 2GB each), when I open them with the Sony Vegas, the first one is only recognizing audio...what can i do?
Thanks in advance...
Re: .mp4 video clip only plays audio by John Rofrano on Sep 11, 2008 at 8:22:05 pm
Is it always the first file you drop or is it just one particular file that won't show video? Can you see the video if you play this file outside of Vegas? Perhaps the file is corrupt? Does the Sony HDR-SR1 come with software to transfer the files to the PC and if so, are you using it? Maybe you should try transferring the file again.
Re: .mp4 video clip only plays audio by Agustin Ciccia on Sep 12, 2008 at 3:33:23 am
Well, so far I have transfered 4 different speeches and all of them have the same problem, the first file only audio.
Anyway I bought my Sony HDR-SR1 used on ebay and did not come with CD installation, but when you plug it in computer it recognizes camera as another drive and you can transfer any file inside the camera.
Concerning other programs, well, we are talking about .MTS files, Xilisoft recognizes them with no problem, thanks.
Re: .mp4 video clip only plays audio by John Rofrano on Sep 12, 2008 at 12:23:57 pm
The reason I asked about the software is because most hard disk recorders and memory recorders use the FAT32 file system which limits your filesize to 4GB and causes a single recording to be broken up into several files. The software stitches these back together into one large file so that what you recorded is what you get. I was thinking that maybe this stitching would causes a re-write and thus fix any problem with the file. You might want to search the Sony site and see if there is any software you can download for your camera. Just something to try.
Of course, this may also be why the camera was being sold used on eBay. Maybe it has issues? With tape, we always record black leader and color bars at the beginning. Perhaps you should create a short black clip as the first recording so that you don't care if the first file is always bad because it won't be anything important. The fact that it's always the first clip leads be to believe it might be a camera issue with writing the first clip. Still very strange. You should not be having this problem.
If you can upload a small bad clip somewhere we can download it and test it on our systems for you.
Re: .mp4 video clip only plays audio by Agustin Ciccia on Sep 12, 2008 at 2:00:49 pm
Thanks and by the way I forgot to tell you that I tried filming 6 different shots of 30 seconds each (I paused and record again 5 times), and then, when moving them to the hard drive, Sony Vegas did not have any problem reading perfectly the first file (video and audio).
I guess the problem is with the firs FULL file (or the first partitioning of 2GB).
Camera should not be a problem, although it may certainly be, but I am afraid if I record the next long speech and do a 30 second first frame, the following would be a FULL 2GB frame that MAY show the same problem...well, I will try it, I do appreciate your help. Agustin
