Need help understanding video format& issues


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  1. jtsporsche

    jtsporsche Member This Topic's Starter

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    Hi, I have a moto droid and I have video playing issues, and I don't understand technology at all. Somebody sent me a video (from new samsung fascinate) and when I tried to watch it I only got audio. I have the arcmedia app, which allows me to watch the video, but I think the audio is messed up. This video is in mp4. So why can't I watch this video with my stock media player?
     

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  2. jtsporsche

    jtsporsche Member This Topic's Starter

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    Also, id like to add that if I go to my gallery and try to view the mp4 video it asks if I want to use arcmedia, and if I select it, it says it cannot play it. But if I go into arcmedia, it'll play like I described above.
     
  3. sitlet

    sitlet Banned

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    Try playing it on a computer with VLC Player or Quicktime. It's highly likely the phone doesnt have the right codec to play back the audio.
     
  4. jtsporsche

    jtsporsche Member This Topic's Starter

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    Not really interested in watching it on the computer, and what is codec?? Is this because my original droid can't handle the mp4? I've also noticed that all of the other videos on my phone are 3gp.
     
  5. sitlet

    sitlet Banned

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    Please, try it on the computer with VLC or Quicktime. That will tell us if the video has ANY audio. If the video wasn't recorded with audio, then thats the problem.

    Codecs are different algorithms that are used to Encode the video when it is taken or converted, and Decode the video when played back. If you have a video file that has an unpopular codec, you wont be able to play it if the playback device doesnt have that codec.

    mp4 is just the container. Inside that mp4 video could be a number of different codecs. The Droid will only play h264 codec.
     
  6. jtsporsche

    jtsporsche Member This Topic's Starter

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    Thanks for the help, but like I said in my previous posts...
    If I view with standard player all I get is audio (so I know it has audio)
    -arcmedia app has audio and video, video plays verw slow, audio is right on
    -rock player app, pretty much has it perfect (just tried that)
    So is there an app or computer program that will allow me to see what format or codec or whatever my videos are in? And also allow me to convert videos like I've read about in other posts?
    Thanks
     
  7. mikedt

    mikedt 你好 Guide

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    Yes VLC will allow you to see what format or codecs a video file uses. Also VLC is rather good at converting from one format to another.
     
  8. sitlet

    sitlet Banned

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    Download MediaInfo on the computer. Open the file in that, then go to Tree view. Copy everything there and paste it here.
     
  9. jtsporsche

    jtsporsche Member This Topic's Starter

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    I opened it with quicktime on my pc, played horribly slow and laggy, checked the video info while I was there, and it said the video was h264. Windows media couldn't play it at all.
    Sorry guys but I'm really ignorant about this stuff, I just wanna know why my phones standard player can't play it, but an app like rock player can.

    Ill try to get the VLC thing.
     
  10. jtsporsche

    jtsporsche Member This Topic's Starter

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    downloaded VLC, plays good, with my computer its hard to tell but im pretty sure any lagging is because of my 10? year old pc. but like i said, id like to be able to watch the video on my phone, not my pc.

    here is what it says under codec information:
    AUDIO
    codec: MPEG AAC Audio (mp4a)
    sample rate: 32000hz

    VIDEO
    codec: H264 - MPEG-4 AVC (part10) (avc1)
    resolution:720x840
    frame rate: 29.438970

    again, thanks everyone for your help and patience, i know people like me must be a pain lol.
     
  11. sitlet

    sitlet Banned

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    Ummm, yes. My 4 year old backup pc cant play 720p files.

    Whats the bitrat of the audio and video?
     
  12. Demache

    Demache Well-Known Member

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    Sweet jesus that's old. Congratulations for keeping that PC around that long.

    What is it, a Pentium III? Just out of curiosity. My 12 year old Pentium II can't manage any MP4 video period. Its just too old. Does divx fine though.
     
  13. jtsporsche

    jtsporsche Member This Topic's Starter

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    i have no idea, what my bitrate is.
     
  14. sitlet

    sitlet Banned

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    If you downloaded MediaInfo like I told you a few days ago, that would tell you.
     
  15. jtsporsche

    jtsporsche Member This Topic's Starter

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    ...ok, I was told about mediainfo and vlc, figured they did the same thing, will get mediainfo.
     
  16. jtsporsche

    jtsporsche Member This Topic's Starter

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    ok, sorry for the delay, thank you for tuning back in, heres all the info mediainfo gives me...

    Format : MPEG-4
    Format profile : 3GPP Media Release 4
    Codec ID : 3gp4
    File size : 10.3 MiB
    Duration : 24s 960ms
    Overall bit rate : 3 446 Kbps

    Video
    ID : 2
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : Baseline@L3.0
    Format settings, CABAC : No
    Format settings, ReFrames : 1 frame
    Format settings, GOP : M=1, N=30
    Muxing mode : Container profile=Unknown@12.3
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 24s 865ms
    Bit rate mode : Variable
    Bit rate : 3 394 Kbps
    Width : 720 pixels
    Height : 480 pixels
    Display aspect ratio : 3:2
    Frame rate mode : Variable
    Frame rate : 29.479 fps
    Minimum frame rate : 18.182 fps
    Maximum frame rate : 33.333 fps
    Standard : NTSC
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.333
    Stream size : 10.1 MiB (98%)
    Language : English

    Audio
    ID : 1
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format version : Version 4
    Format profile : LC
    Format settings, SBR : No
    Codec ID : 40
    Duration : 24s 960ms
    Bit rate mode : Variable
    Bit rate : 62.2 Kbps
    Maximum bit rate : 64.4 Kbps
    Channel(s) : 1 channel
    Channel positions : Front: C
    Sampling rate : 16.0 KHz
    Stream size : 182 KiB (2%)
    Language : English
     
  17. sitlet

    sitlet Banned

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    Whats the extension on it? Try renaming it to .mp4 and see if it will play then.
     
  18. jtsporsche

    jtsporsche Member This Topic's Starter

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    What is an extension? Remember, technologically ignorant here.
     
  19. sitlet

    sitlet Banned

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    Google is your friend. The extension is what comes after the dot. For example, acdc.mp3, mp3 is the extension.
     
  20. jtsporsche

    jtsporsche Member This Topic's Starter

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    Ok, it is .mp4, I should tell you however, that all of the other videos on my phone are 3gp, and they play fine.

    I can't figure out how to rename the extension, everytime I try it just let's me change the file name.
     
  21. sitlet

    sitlet Banned

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    Use Astro. Try renaming it to .3gp, if that doesnt work put it back to mp4
     
  22. jtsporsche

    jtsporsche Member This Topic's Starter

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    Ok, did this, didn't help.
     
  23. sitlet

    sitlet Banned

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    ok then you are going to have to convert the video to h264 baseline codec with an mp4 extension. You will lose quality, but if you want to view it on the phone thats the only way.
     
  24. jtsporsche

    jtsporsche Member This Topic's Starter

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    Ok, my vlc info says it is h264, and are you farmiliar enough with vlc to tell me how to use it? Because I couldn't figure it out lol.
    And as long as the quality isn't horrible, its not a huge deal.
     
  25. sitlet

    sitlet Banned

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