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  1. Member
    Join Date
    Jan 2006
    Location
    South Africa
    Search Comp PM
    Hi,

    I'm having problems creating 'MPEG-4 Visual' files, baseline profile at L1.

    For some reason every app I've tried except for 3GP Converter has not been
    able to generate these files, they either generate MPEG-4 files or they
    generate files with BP at L2 or 3 and with reference frames. The device
    I want to play these files on can only play back 640by480 Mpeg4 Visual
    files at Base Profile @L1, Without any form of B-frames or extra stuff.

    Now 3GP_Converter seems to work but some files like this one below:

    General
    Complete name : C:\Tsukishima_Kirari_starring_Kusumi_Koharu__Happy .mp4
    Format : MPEG-4
    Format profile : Base Media
    Codec ID : isom
    File size : 35.0 MiB
    Duration : 4mn 14s
    Overall bit rate : 1 155 Kbps
    Encoded date : UTC 2007-05-12 07:58:17
    Tagged date : UTC 2007-05-12 07:58:17

    Video
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L5.1
    Format settings, CABAC : Yes
    Format settings, ReFrames : 16 frames
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 4mn 14s
    Bit rate mode : Variable
    Bit rate : 1 026 Kbps
    Maximum bit rate : 2 098 Kbps
    Width : 716 pixels
    Height : 356 pixels
    Display aspect ratio : 16/9
    Frame rate mode : Constant
    Frame rate : 23.976 fps
    Resolution : 24 bits
    Colorimetry : 4:2:0
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.168
    Stream size : 31.1 MiB (89%)
    Writing library : x264 core 54 svn-635M
    Encoding settings : cabac=1 / ref=16 / deblock=1:-2:-1 / analyse=0x3:0x133 / me=umh / subme=7 / brdo=1 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=2 / deadzone=21,11 / chroma_qp_offset=0 / threads=3 / nr=0 / decimate=0 / mbaff=0 / bframes=3 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=3 / wpredb=1 / bime=1 / keyint=240 / keyint_min=24 / scenecut=40(pre) / rc=crf / crf=21.5 / rceq='blurCplx^(1-qComp)' / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.40 / pb_ratio=1.30
    Encoded date : UTC 2007-05-12 05:17:05
    Tagged date : UTC 2007-05-12 07:58:19


    generate this when I use 3GP Converter, and even at 2500Kbps the file is full of blocks, and is just
    ugly (and is 3x the size of the original).

    General
    Complete name : E:\3GP_Converter034\Tsukishima_Kirari_starring_Kus umi_Koharu__Happy.MP4
    Format : MPEG-4
    Codec ID : M4V
    File size : 92.7 MiB
    Duration : 4mn 14s
    Overall bit rate : 3 060 Kbps
    Movie name : Tsukishima_Kirari_starring_Kusumi_Koharu__Happy
    Encoded date : UTC 2008-09-14 15:13:52
    Tagged date : UTC 2008-09-14 15:13:52
    Writing application : 3GP_Converter051103 www.nurs.or.jp/~calcium FFmpegCVSb4629
    Comment : QuickTime 6.0 or greater

    Video
    Format : MPEG-4 Visual
    Format profile : Simple@L1
    Format settings, BVOP : No
    Format settings, QPel : No
    Format settings, GMC : No warppoints
    Format settings, Matrix : Default
    Codec ID : 20
    Duration : 4mn 14s
    Bit rate mode : Constant
    Bit rate : 2 932 Kbps
    Nominal bit rate : 3 000 Kbps
    Width : 640 pixels
    Height : 480 pixels
    Display aspect ratio : 4/3
    Frame rate mode : Constant
    Frame rate : 29.970 fps
    Resolution : 24 bits
    Colorimetry : 4:2:0
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.318
    Stream size : 88.9 MiB (96%)
    Encoded date : UTC 2008-09-14 15:13:52
    Tagged date : UTC 2008-09-14 15:13:52

    I generated this file using:

    ffmpeg" -y -i "<%InputFile%>" -title "<%Title%>" -timestamp "<%TimeStamp%>" -bitexact -vcodec mpeg4 -s 640x480 -r 29.97 -b 3000 -acodec aac -ac 2 -ar 48000 -ab 64 -f ipod "<%OutputFile%>.MP4""

    in 3GP Converter.

    SO my problem is this, I need a way of generating MPEG-4 "Visual" files at Baseline profile L1 which
    look just as good as this tiny file which seems to have been made at MPEG-4 High@L5.1. For example,
    the original 30MB
    file looks brilliant, the 97MB file I get above just looks ugly.

    Anyone has any pointers or ideas?

    Thank you .
    e
    Quote Quote  
  2. Try virtualdub with xvid and adjust the profile to simple@L1
    Quote Quote  
  3. Member
    Join Date
    Jan 2006
    Location
    South Africa
    Search Comp PM
    Thanks. But the output file has to be H264 and not Xvid as this device can only handle
    H264 MPEG4 Visual at BP L1. It has no Xvid or Divx support.
    Quote Quote  
  4. According to your 2nd video mediainfo, that is XviD (MPEG4 part2), not h264 (MPEG4 Part10)

    "MPEG-4 "Visual" files at Baseline profile L1 " is XviD specification, not h264

    Perhaps you can clarify what you want or the model of your player
    Quote Quote  
  5. Member
    Join Date
    Jan 2006
    Location
    South Africa
    Search Comp PM
    Originally Posted by poisondeathray
    According to your 2nd video mediainfo, that is XviD (MPEG4 part2), not h264 (MPEG4 Part10)

    "MPEG-4 "Visual" files at Baseline profile L1 " is XviD specification, not h264

    Perhaps you can clarify what you want or the model of your player
    That is very strange indeed. The 2nd video plays but not according to the specs
    of the player which are:

    "Movie Yes (video: MPEG4 / H.263 / ASF / H.264 *Only decode) "
    from:
    http://www.sharp-phone.com/country/products/product/spec.php?country=TW&lang=en&product=862-92

    So perhaps this means this device can play Xvid back? I'll encode something in Xvid then
    and see.... thanks.
    Quote Quote  
  6. Member
    Join Date
    Jan 2006
    Location
    South Africa
    Search Comp PM
    Yes it turns out XviD files are MPEG-4 visual and they play back on this device! I wish the manufacturer had just specified "xvid" in mpeg4
    container instead. Would have saved me so much effort.

    Thanks!!! Definately makes this easier.
    Quote Quote  



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