VideoHelp Forum
+ Reply to Thread
Results 1 to 4 of 4
Thread
  1. I have been tasked with creation of a PAL DV .mov with ffmpeg matching the following specifications:

    Code:
    General
    Complete name                            : sample.mov
    Format                                   : MPEG-4
    Format profile                           : QuickTime
    Codec ID                                 : qt  
    File size                                : 2.01 GiB
    Duration                                 : 1mn 42s
    Overall bit rate                         : 167 Mbps
    Writing library                          : Apple QuickTime
    
    Video
    ID                                       : 1
    Format                                   : YUV
    Codec ID                                 : 2vuy
    Duration                                 : 1mn 42s
    Bit rate mode                            : Constant
    Bit rate                                 : 166 Mbps
    Width                                    : 703 pixels
    Original width                           : 720 pixels
    Height                                   : 576 pixels
    Display aspect ratio                     : 4:3
    Frame rate mode                          : Constant
    Frame rate                               : 25.000 fps
    Color space                              : YUV
    Chroma subsampling                       : 4:2:2
    Compression mode                         : Lossless
    Bits/(Pixel*Frame)                       : 16.387
    Stream size                              : 1.99 GiB (99%)
    Language                                 : English
    Color primaries                          : BT.601 PAL
    Transfer characteristics                 : BT.709
    Matrix coefficients                      : BT.601
    
    Audio
    ID                                       : 2
    Format                                   : PCM
    Format settings, Endianness              : Little
    Format settings, Sign                    : Signed
    Codec ID                                 : sowt
    Duration                                 : 1mn 42s
    Bit rate mode                            : Constant
    Bit rate                                 : 1 536 Kbps
    Channel count                            : 2 channels
    Channel positions                        : Front: L R
    Sampling rate                            : 48.0 KHz
    Bit depth                                : 16 bits
    Stream size                              : 18.8 MiB (1%)
    Language                                 : English
    
    Other
    ID                                       : 3
    Type                                     : Time code
    Format                                   : QuickTime TC
    Duration                                 : 1mn 42s
    Time code of first frame                 : 01:00:00:00
    Time code settings                       : Striped
    Language                                 : English
    I would like to keep the output as close to the specifications above for broadcasting purposes. I created two samples with -format mov -target pal-dv -r pal and -format mov -target dvvideo -r pal, but both files were rejected by Adobe Media Encoder.
    Quote Quote  
  2. Member Cornucopia's Avatar
    Join Date
    Oct 2001
    Location
    Deep in the Heart of Texas
    Search PM
    That's like saying, "I want to create a SQUARE with these requirements: constant radius from centerpoint (aka CIRCLE)." It's an oxymoron. It cannot be done.

    Your "DV" MOV file is not a DV-type file, it is a losslessly-compressed YUV4:2:2 MOV file (of unknown codec). Could be Apple, Aja Kona, Drastic...
    You want something more like: -vcodec rawvideo -pix_fmt uyvy422 -vtag 2vuy.

    But if you are inputting to AME anyway, why the requirement now? Both are encoders with outputs - why not output what your intended output from AME is supposed to be and bypass 1 generation of encoding? (or do you not have AME yourself?)

    BTW, that LPCM audio is backwards-endian for a normal MOV (most normal LPCM MOVs are "twos" Big Endian). Another strangeness in your request.

    Scott
    Quote Quote  
  3. Originally Posted by Cornucopia View Post
    That's like saying, "I want to create a SQUARE with these requirements: constant radius from centerpoint (aka CIRCLE)." It's an oxymoron. It cannot be done.

    Your "DV" MOV file is not a DV-type file, it is a losslessly-compressed YUV4:2:2 MOV file (of unknown codec). Could be Apple, Aja Kona, Drastic...
    You want something more like: -vcodec rawvideo -pix_fmt uyvy422 -vtag 2vuy.

    But if you are inputting to AME anyway, why the requirement now? Both are encoders with outputs - why not output what your intended output from AME is supposed to be and bypass 1 generation of encoding? (or do you not have AME yourself?)

    BTW, that LPCM audio is backwards-endian for a normal MOV (most normal LPCM MOVs are "twos" Big Endian). Another strangeness in your request.

    Scott
    Thank you for responding. -vcodec rawvideo -pix_fmt uyvy422 -vtag 2vuy is exactly what I was looking for, but how do I define the color primaries in the metadata through ffmpeg?

    Color primaries : BT.601 PAL
    Also, I was unable to find the -vtag switch in the ffmpeg documentation. Could you please point me to a list of all acceptable switches?

    I was loading the files in AME to check for general compatibility. The end product from ffmpeg will not be fed to AME.
    Quote Quote  
  4. Member Cornucopia's Avatar
    Join Date
    Oct 2001
    Location
    Deep in the Heart of Texas
    Search PM
    Here are 2 quick places:http://www.ffmpeg.org/faq.html#How-do-I-encode-Xvid-or-DivX-video-with-ffmpeg_003f
    and
    https://trac.ffmpeg.org/wiki/Encode/MPEG-4
    From what I can see, there isn't full documentation on FourCC options, as that is external to ffmpeg (used primarily with AVIs & MOVs).

    Not sure about metadata for 601, but I'm guessing that, since your size is SD PAL, 601 is used by default whether it is flagged in metadata or not.

    Scott
    Quote Quote  
Visit our sponsor! Try DVDFab and backup Blu-rays!