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  1. I'm at the end of my rope on this one, boys. I've got a stack of mp4 files that are experiencing the same issue. There's about 30 of them, they're all 30 minutes+ / 75mb+. I've selected one of the smaller ones at random for the purpose of this thread because I assume whatever is wrong with one of them is wrong with all of them.

    Here's the URL:
    http://lib-ozzy.library.mun.ca/cdm4/item_viewer.php?CISOROOT=/extension&CISOPTR=615&CISOBOX=1&REC=5

    Direct link to a 121MB mp4 file:
    http://lib-ozzy.library.mun.ca/mp4/613.mp4
    (Note that the file only has audio for the first 30 seconds--this is intentional and not anything related to this error. The original tape is missing the audio. Don't worry about this.)

    Here's how the files were generated:
    - The files are archival material from the 1970s, ripped off VHS and Betamax and encoded directly to DVD.
    - The DVDs are then ripped and outputted as h264/mp4 using Handbrake. I have definitely streamed the MP4 files from this step before and they've worked.
    - The files are then clipped (removing space at the front and end) using some unknown software, and I don't have access to the guy who did the clipping to know. I understand that whatever software he used did not require a full re-encode based on the fact that he says that the software "saves the files instantly". I assume this step is what's causing the issues.

    I am trying to stream the files online using HTML5 Video with a fallback to JWPlayer for clients that don't support HTML5 streaming. I know the code works fine because I've streamed other videos using this exact code no problem.

    Here's what happens when I try to play/deal with the files:
    - Locally playing the files using Quicktime and VLC works, with no error or warnings.
    - Remuxing using mp4box in verbose mode works with no error or warnings and the result doesn't play any differently.
    - Moving the metadata using Metadata Mover works with no error or warnings and the result doesn't play any differently.
    - The files play as HTML5 Video on the iPhone, iPad, and Mac Safari with no error or warnings. Awesome!
    - Chrome recognizes the HTML5 Video and immediately bombs out, producing nothing. Not awesome!
    - Firefox and IE both load JWPlayer, which correctly identifies the video length, but JWPlayer only plays audio, no video. Seriously not awesome, because 95% of the prospective audience are on these platforms.

    As I mentioned just then, I tried using mp4box to remux and tried using Metadata Mover to move the metadata thinking that might be an issue, neither worked. I'm assuming continued efforts to try different software is just going to mangle the file even more :/

    MediaInfo for the file:
    General
    Complete name : C:\Documents and Settings\xxxxxxx\Desktop\613.mp4
    Format : MPEG-4
    Format profile : Base Media / Version 2
    Codec ID : mp42
    File size : 123 MiB
    Duration : 30mn 10s
    Overall bit rate : 571 Kbps
    Encoded date : UTC 2010-09-09 15:30:51
    Tagged date : UTC 2010-09-09 15:30:51

    Video
    ID : 201
    Format : MPEG-4 Visual
    Format profile : Simple@L3
    Format settings, BVOP : No
    Format settings, QPel : No
    Format settings, GMC : No warppoints
    Format settings, Matrix : Default (H.263)
    Codec ID : 20
    Duration : 30mn 10s
    Bit rate mode : Variable
    Bit rate : 511 Kbps
    Maximum bit rate : 814 Kbps
    Width : 400 pixels
    Height : 304 pixels
    Display aspect ratio : 4:3
    Original display aspect ratio : 4:3
    Frame rate mode : Constant
    Frame rate : 29.970 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.140
    Stream size : 110 MiB (90%)
    Writing library : XviD 1.2.1 (UTC 2008-12-04)
    Encoded date : UTC 2010-09-09 15:30:51
    Tagged date : UTC 2010-09-09 15:31:00

    Audio
    ID : 101
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format version : Version 4
    Format profile : LC
    Format settings, SBR : No
    Codec ID : 40
    Duration : 30mn 10s
    Bit rate mode : Variable
    Bit rate : 57.4 Kbps
    Maximum bit rate : 65.1 Kbps
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 24.0 KHz
    Stream size : 12.4 MiB (10%)
    Encoded date : UTC 2010-09-09 15:30:59
    Tagged date : UTC 2010-09-09 15:31:00

    Media Info for another one of the broken files:
    Format profile : QuickTime
    Codec ID : qt
    File size : 94.1 MiB
    Duration : 26mn 49s
    Overall bit rate : 491 Kbps
    Encoded date : UTC 2010-07-22 02:05:42
    Tagged date : UTC 2010-07-22 02:05:54
    Writing application : HandBrake 0.9.4 2009112300
    Writing library : Apple QuickTime 7.6.6
    com.apple.quicktime.player.movie : (Binary)

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L2.1
    Format settings, CABAC : Yes
    Format settings, ReFrames : 3 frames
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 26mn 49s
    Bit rate mode : Variable
    Bit rate : 403 Kbps
    Width : 400 pixels
    Height : 288 pixels
    Display aspect ratio : 1.389
    Frame rate mode : Variable
    Frame rate : 29.970 fps
    Minimum frame rate : 29.970 fps
    Maximum frame rate : 29.980 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.117
    Stream size : 77.3 MiB (82%)
    Encoded date : UTC 2010-07-20 23:55:11
    Tagged date : UTC 2010-07-22 02:05:54
    Color primaries : BT.601-6 525, BT.1358 525, BT.1700 NTSC, SMPTE 170M
    Transfer characteristics : BT.709-5, BT.1361
    Matrix coefficients : BT.601-6 525, BT.1358 525, BT.1700 NTSC, SMPTE 170M

    Audio
    ID : 2
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format version : Version 4
    Format profile : LC
    Format settings, SBR : No
    Format settings, PS : Yes
    Codec ID : 40
    Duration : 26mn 49s
    Bit rate mode : Variable
    Bit rate : 82.7 Kbps
    Maximum bit rate : 104 Kbps
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 48.0 KHz
    Stream size : 15.9 MiB (17%)
    Encoded date : UTC 2010-07-20 23:55:11
    Tagged date : UTC 2010-07-22 02:05:54

    I think I've been as thorough as I possibly can for the OP. I'm not a wizard at video, but I've done my best to search different threads and different pieces of software to try to solve the problem and nothing is working. If anyone would be kind enough to check out the MediaInfo reading or the files themselves and let me know why on earth JWPlayer/Chrome can't handle the file and what I can do to fix it, that'd be awesome. Feel free to download the mp4 file if it helps your own tests.

    At this point we're willing to re-encode if necessary to make the files work, but obviously remuxing would be greatly preferable.
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  2. The 1st file mediainfo indicates that you're using xvid (mpeg4-asp) , not h.264/avc (mpeg4 part 10) compression . It's not supported by flash , JW or any other flash front end. h.264/avc is also supported by HTML5 so that's what you should use , to ensure cross platfrom compatiblity. You would need to re-encode those, and I would start from the originals if I were you.

    It's possible that the guy doing the editing screwed up , and in fact reencoded using xvid, but I'm sure you can sort all that out

    The other file has avc video, but has metadata that says apple qt writing library, did you set it up for streaming in the quicktime export options (or was this encoded with handbrake) ?
    Last edited by poisondeathray; 10th Sep 2010 at 14:14.
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