
Kazemon15 wrote:Okay.
I managed to download the new Zarx and make it MP4 with AAC audio, but the problem now is that the audio is slightly off sync. Is that normal when you use the new Zarx?
If I can't fix the audio sync, I'm considering making it Mpeg-2, but I never did that before, so I am not sure how to. Sorry for any trouble and thanks for all your help!


SailorDeath wrote:We will more than likely be at a resolution of 1024x768, we use a video switcher with a scaler in it. And the PC that is playing the videos will be at a 4:3 AR for the most part.
BasharOfTheAges wrote:SailorDeath wrote:We will more than likely be at a resolution of 1024x768, we use a video switcher with a scaler in it. And the PC that is playing the videos will be at a 4:3 AR for the most part.
So, would you prefer 960x720 resolutions for your list of MP4 frame sizes instead of 1280x720?

SailorDeath wrote:BasharOfTheAges wrote:SailorDeath wrote:We will more than likely be at a resolution of 1024x768, we use a video switcher with a scaler in it. And the PC that is playing the videos will be at a 4:3 AR for the most part.
So, would you prefer 960x720 resolutions for your list of MP4 frame sizes instead of 1280x720?
It depends on your source, if it's letterboxed you're probably better off with 1280x720, if it's 4:3 then go with the 960x720. THe computer will look at the AR flag and adjust the AR for the video based on the resolution. Either way it'll be displayed properly if it's flagged correctly.



LittleAtari wrote:http://i4.photobucket.com/albums/y135/LittleAtari/KazEntry-1.png
Here's the specs of the video that Kaz submitted to Acen. I dont see anything wrong with the audio, unless I'm missing something....
SailorDeath wrote:[•] MPEG-4 file format requirements[-] Progressive Video Only
[-] 640 x 480, 848 x 480, 1280x720 Frame Size
[-] 23.976 or 29.97 Frames per Second
[-] H.264 video compression
[-] 48 kHz AAC Stereo Audio. We recommend LC-AAC at 160 kbps instead of HE-AAC.
[-] Display Aspect Ratio 1:1 (Remember you are submitting in square pixels).
Contest FAQ wrote:Perform Quality Control
-----------------------------------------------
The majority of the tech problems we see with submissions are the result of poor Quality Control. Do not create extra work for yourself. Just because your file plays in your media player do not assume you have formatted it properly. Always double check your file and compare the output you encoded. If you burned a disc don't assume a verify pass means its good. You must play back the file and watch it all the way through.
A program like http://mediainfo.sourceforge.net/en is useful for checking your file's formatting from its header but you should still always watch the entire video through to see if there are problems. Programs like this can often report things slightly different from playback so it still does not hurt to triple check and use another program to check and see how the file is actually being decoded.
ngsilver wrote:LittleAtari wrote:http://i4.photobucket.com/albums/y135/LittleAtari/KazEntry-1.png
Here's the specs of the video that Kaz submitted to Acen. I dont see anything wrong with the audio, unless I'm missing something....SailorDeath wrote:[•] MPEG-4 file format requirements[-] Progressive Video Only
[-] 640 x 480, 848 x 480, 1280x720 Frame Size
[-] 23.976 or 29.97 Frames per Second
[-] H.264 video compression
[-] 48 kHz AAC Stereo Audio. We recommend LC-AAC at 160 kbps instead of HE-AAC.
[-] Display Aspect Ratio 1:1 (Remember you are submitting in square pixels).
Notice the section related to audio and the fact that it only shows 1 channel? Now look at the mp4 requirements for audio and that it requires stereo.Contest FAQ wrote:Perform Quality Control
-----------------------------------------------
The majority of the tech problems we see with submissions are the result of poor Quality Control. Do not create extra work for yourself. Just because your file plays in your media player do not assume you have formatted it properly. Always double check your file and compare the output you encoded. If you burned a disc don't assume a verify pass means its good. You must play back the file and watch it all the way through.
A program like http://mediainfo.sourceforge.net/en is useful for checking your file's formatting from its header but you should still always watch the entire video through to see if there are problems. Programs like this can often report things slightly different from playback so it still does not hurt to triple check and use another program to check and see how the file is actually being decoded.
I use both the program listed in the FAQ above as well as GSpot in order to check the settings of a video, as well as watch it all the way through, before it passes the first QC check and the video is received. Both of these programs shows that there is only 1 audio channel and it is marked as Mono, not even joint Stereo. As we stated in the entry system, we only accept 48khz Stereo audio.
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