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  1. Member
    Join Date
    Jan 2019
    Location
    Russia
    Search PM
    Please help, what parameters do I need to write in ffmpeg to transcode from xvac to avchd?
    When changing fps and bitrate, in Premiere everything works very slow, with avchd files works very fast
    -c:v libx264 -preset medium -profile high -level 4.2 -b:v 26624K -minrate 26624K -maxrate 26624K -bufsize 53248K -nal-hrd cbr -pix_fmt yuv420p -r 50 -c:a ac3 -b:a 256K

    XAVC
    Format : XAVC
    Codec ID : XAVC (XAVC/mp42/iso2)
    File size : 112 MiB
    Duration : 14 s 880 ms
    Overall bit rate mode : Variable
    Overall bit rate : 63.2 Mb/s

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L5.1
    Format settings : CABAC / 2 Ref Frames
    Format settings, CABAC : Yes
    Format settings, RefFrames : 2 frames
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Bit rate mode : Variable
    Bit rate : 58.9 Mb/s
    Maximum bit rate : 60.0 Mb/s
    Width : 1 920 pixels
    Height : 1 080 pixels
    Display aspect ratio : 16:9
    Frame rate mode : Constant
    Frame rate : 100.000 FPS
    Color space : YUV
    Chroma subsampling : 4:2:0

    AVCHD
    Format : BDAV
    Format/Info : Blu-ray Video
    Overall bit rate mode : Variable
    Overall bit rate : 24.7 Mb/s
    Maximum Overall bit rate : 28.0 Mb/s

    Video
    ID : 4113 (0x1011)
    Menu ID : 1 (0x1)
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L4.2
    Format settings : CABAC / 2 Ref Frames
    Format settings, CABAC : Yes
    Format settings, RefFrames : 2 frames
    Codec ID : 27
    Bit rate mode : Variable
    Bit rate : 23.5 Mb/s
    Maximum bit rate : 26.0 Mb/s
    Width : 1 920 pixels
    Height : 1 080 pixels
    Display aspect ratio : 16:9
    Frame rate : 50.000 FPS
    Color space : YUV
    Chroma subsampling : 4:2:0
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  2. Member
    Join Date
    Oct 2017
    Location
    Athens - Greece
    Search Comp PM
    I have not used it, but I read at Sony's site that you can export from XAVC-S to MP4 with Sony's applications. You can then use any compatible program to resize at 1920x1080 and convert to AVCHD. I would open the MP4 file in Virtualdub, resize and crop as necessary, edit out unwanted scenes and then compress video with x264vfw codec that produces AVCHD compatible video. I would compress audio with AC3ACM codec to Dobly Digital format. Use AVCHD Calculator to find the appropriate video bitrate so your video will fill exactly the target medium (such as DVD-R disc) and be of maximum possible quality. Then use MultiAVCHD to create the AVHCD without recompressing and further reducing quality.
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