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  • avcodec/dstdec : Use local channels variable

    13 février 2020, par Michael Niedermayer
    avcodec/dstdec : Use local channels variable

    Reviewed-by : Paul B Mahol <onemda@gmail.com>
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavcodec/dstdec.c

  • ffmpeg merge multiple (N) mono audio channels of a MXF video to multiple (M) stereo channels of MP4 video

    14 février 2020, par Laura

    I have an MXF file with 16 audio mono streams and I need to recode it in a mp4 file with 2<=n<=16 channels merging input streams, e.g. input channels 1 and 2 on output channel 1 and 9 and 10 on output channel 2. This job will be done with ffmpeg. I read the documentation and found the amerge and amix filters that would be nice, but they output one channel only. Is there any solution for this problem ?

    Thanks,
    Laura

    Find below the output of ffprobe on mxf file :


    "streams" :[

    "index":0,
    "codec_name" :"mpeg2video",
    "codec_long_name" :"MPEG-2 video",
    "profile" :"4:2:2",
    "codec_type" :"video",
    "codec_time_base" :"1/25",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "width":1920,
    "height":1080,
    "coded_width":0,
    "coded_height":0,
    "has_b_frames":1,
    "sample_aspect_ratio" :"1:1",
    "display_aspect_ratio" :"16:9",
    "pix_fmt" :"yuv422p",
    "level":2,
    "color_range" :"tv",
    "color_space" :"bt709",
    "color_transfer" :"bt709",
    "color_primaries" :"bt709",
    "chroma_location" :"topleft",
    "field_order" :"tt",
    "refs":1,
    "r_frame_rate" :"25/1",
    "avg_frame_rate" :"25/1",
    "time_base" :"1/25",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":448,
    "duration" :"17.920000",
    "bit_rate" :"50000000",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"

    ,

    "index":1,
    "codec_name" :"pcm_s24le",
    "codec_long_name" :"PCM signed 24-bit little-endian",
    "codec_type" :"audio",
    "codec_time_base" :"1/48000",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "sample_fmt" :"s32",
    "sample_rate" :"48000",
    "channels":1,
    "bits_per_sample":24,
    "r_frame_rate" :"0/0",
    "avg_frame_rate" :"0/0",
    "time_base" :"1/48000",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":860160,
    "duration" :"17.920000",
    "bit_rate" :"1152000",
    "bits_per_raw_sample" :"24",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"

    ,

    "index":2,
    "codec_name" :"pcm_s24le",
    "codec_long_name" :"PCM signed 24-bit little-endian",
    "codec_type" :"audio",
    "codec_time_base" :"1/48000",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "sample_fmt" :"s32",
    "sample_rate" :"48000",
    "channels":1,
    "bits_per_sample":24,
    "r_frame_rate" :"0/0",
    "avg_frame_rate" :"0/0",
    "time_base" :"1/48000",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":860160,
    "duration" :"17.920000",
    "bit_rate" :"1152000",
    "bits_per_raw_sample" :"24",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"

    ,

    "index":3,
    "codec_name" :"pcm_s24le",
    "codec_long_name" :"PCM signed 24-bit little-endian",
    "codec_type" :"audio",
    "codec_time_base" :"1/48000",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "sample_fmt" :"s32",
    "sample_rate" :"48000",
    "channels":1,
    "bits_per_sample":24,
    "r_frame_rate" :"0/0",
    "avg_frame_rate" :"0/0",
    "time_base" :"1/48000",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":860160,
    "duration" :"17.920000",
    "bit_rate" :"1152000",
    "bits_per_raw_sample" :"24",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"

    ,

    "index":4,
    "codec_name" :"pcm_s24le",
    "codec_long_name" :"PCM signed 24-bit little-endian",
    "codec_type" :"audio",
    "codec_time_base" :"1/48000",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "sample_fmt" :"s32",
    "sample_rate" :"48000",
    "channels":1,
    "bits_per_sample":24,
    "r_frame_rate" :"0/0",
    "avg_frame_rate" :"0/0",
    "time_base" :"1/48000",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":860160,
    "duration" :"17.920000",
    "bit_rate" :"1152000",
    "bits_per_raw_sample" :"24",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"

    ,

    "index":5,
    "codec_name" :"pcm_s24le",
    "codec_long_name" :"PCM signed 24-bit little-endian",
    "codec_type" :"audio",
    "codec_time_base" :"1/48000",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "sample_fmt" :"s32",
    "sample_rate" :"48000",
    "channels":1,
    "bits_per_sample":24,
    "r_frame_rate" :"0/0",
    "avg_frame_rate" :"0/0",
    "time_base" :"1/48000",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":860160,
    "duration" :"17.920000",
    "bit_rate" :"1152000",
    "bits_per_raw_sample" :"24",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"

    ,

    "index":6,
    "codec_name" :"pcm_s24le",
    "codec_long_name" :"PCM signed 24-bit little-endian",
    "codec_type" :"audio",
    "codec_time_base" :"1/48000",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "sample_fmt" :"s32",
    "sample_rate" :"48000",
    "channels":1,
    "bits_per_sample":24,
    "r_frame_rate" :"0/0",
    "avg_frame_rate" :"0/0",
    "time_base" :"1/48000",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":860160,
    "duration" :"17.920000",
    "bit_rate" :"1152000",
    "bits_per_raw_sample" :"24",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"

    ,

    "index":7,
    "codec_name" :"pcm_s24le",
    "codec_long_name" :"PCM signed 24-bit little-endian",
    "codec_type" :"audio",
    "codec_time_base" :"1/48000",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "sample_fmt" :"s32",
    "sample_rate" :"48000",
    "channels":1,
    "bits_per_sample":24,
    "r_frame_rate" :"0/0",
    "avg_frame_rate" :"0/0",
    "time_base" :"1/48000",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":860160,
    "duration" :"17.920000",
    "bit_rate" :"1152000",
    "bits_per_raw_sample" :"24",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"

    ,

    "index":8,
    "codec_name" :"pcm_s24le",
    "codec_long_name" :"PCM signed 24-bit little-endian",
    "codec_type" :"audio",
    "codec_time_base" :"1/48000",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "sample_fmt" :"s32",
    "sample_rate" :"48000",
    "channels":1,
    "bits_per_sample":24,
    "r_frame_rate" :"0/0",
    "avg_frame_rate" :"0/0",
    "time_base" :"1/48000",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":860160,
    "duration" :"17.920000",
    "bit_rate" :"1152000",
    "bits_per_raw_sample" :"24",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"


    ],
    "format" :
    "filename" :"/media-caches/video-essence/VIDEO/MXF-XDCAM_HD422@50Mbps1080i25_16Ch/941.mxf",
    "nb_streams":9,
    "nb_programs":0,
    "format_name" :"mxf",
    "format_long_name" :"MXF (Material eXchange Format)",
    "start_time" :"0.000000",
    "duration" :"17.920000",
    "size" :"135028296",
    "bit_rate" :"60280489",
    "probe_score":100,
    "tags" :
    "uid" :"0a9ef41a-36b4-4066-a8a3-b95f62299b6c",
    "generation_uid" :"e134647e-fea1-4673-91c1-afa277d13c00",
    "company_name" :"Sony",
    "product_name" :"MPC",
    "product_version" :"v1.0",
    "application_platform" :"Sony MXF Development Kit (Win32)",
    "product_uid" :"060e2b34-0401-0103-0e06-0120027f0200",
    "modification_date" :"2012-09-17T11:56:20.000000Z",
    "material_package_umid" :"0x060A2B340101010501010D231300000081C32F48A63347D4890F55D3ADC25B99",
    "timecode" :"00:35:30:08"


  • ffmep merge multiple (N) mono audio channels of a MXF video to multiple (M) stereo channels of MP4 video

    13 février 2020, par Laura

    I have an MXF file with 16 audio mono streams and I need to recode it in a mp4 file with 2<=n<=16 channels merging input streams, e.g. input channels 1 and 2 on output channel 1 and 9 and 10 on output channel 2. This job will be done with ffmpeg. I read the documentation and found the amerge and amix filters that would be nice, but they output one channel only. Is there any solution for this problem ?

    Thanks,
    Laura

    Find below the output of ffprobe on mxf file :


    "streams" :[

    "index":0,
    "codec_name" :"mpeg2video",
    "codec_long_name" :"MPEG-2 video",
    "profile" :"4:2:2",
    "codec_type" :"video",
    "codec_time_base" :"1/25",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "width":1920,
    "height":1080,
    "coded_width":0,
    "coded_height":0,
    "has_b_frames":1,
    "sample_aspect_ratio" :"1:1",
    "display_aspect_ratio" :"16:9",
    "pix_fmt" :"yuv422p",
    "level":2,
    "color_range" :"tv",
    "color_space" :"bt709",
    "color_transfer" :"bt709",
    "color_primaries" :"bt709",
    "chroma_location" :"topleft",
    "field_order" :"tt",
    "refs":1,
    "r_frame_rate" :"25/1",
    "avg_frame_rate" :"25/1",
    "time_base" :"1/25",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":448,
    "duration" :"17.920000",
    "bit_rate" :"50000000",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"

    ,

    "index":1,
    "codec_name" :"pcm_s24le",
    "codec_long_name" :"PCM signed 24-bit little-endian",
    "codec_type" :"audio",
    "codec_time_base" :"1/48000",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "sample_fmt" :"s32",
    "sample_rate" :"48000",
    "channels":1,
    "bits_per_sample":24,
    "r_frame_rate" :"0/0",
    "avg_frame_rate" :"0/0",
    "time_base" :"1/48000",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":860160,
    "duration" :"17.920000",
    "bit_rate" :"1152000",
    "bits_per_raw_sample" :"24",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"

    ,

    "index":2,
    "codec_name" :"pcm_s24le",
    "codec_long_name" :"PCM signed 24-bit little-endian",
    "codec_type" :"audio",
    "codec_time_base" :"1/48000",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "sample_fmt" :"s32",
    "sample_rate" :"48000",
    "channels":1,
    "bits_per_sample":24,
    "r_frame_rate" :"0/0",
    "avg_frame_rate" :"0/0",
    "time_base" :"1/48000",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":860160,
    "duration" :"17.920000",
    "bit_rate" :"1152000",
    "bits_per_raw_sample" :"24",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"

    ,

    "index":3,
    "codec_name" :"pcm_s24le",
    "codec_long_name" :"PCM signed 24-bit little-endian",
    "codec_type" :"audio",
    "codec_time_base" :"1/48000",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "sample_fmt" :"s32",
    "sample_rate" :"48000",
    "channels":1,
    "bits_per_sample":24,
    "r_frame_rate" :"0/0",
    "avg_frame_rate" :"0/0",
    "time_base" :"1/48000",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":860160,
    "duration" :"17.920000",
    "bit_rate" :"1152000",
    "bits_per_raw_sample" :"24",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"

    ,

    "index":4,
    "codec_name" :"pcm_s24le",
    "codec_long_name" :"PCM signed 24-bit little-endian",
    "codec_type" :"audio",
    "codec_time_base" :"1/48000",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
    "sample_fmt" :"s32",
    "sample_rate" :"48000",
    "channels":1,
    "bits_per_sample":24,
    "r_frame_rate" :"0/0",
    "avg_frame_rate" :"0/0",
    "time_base" :"1/48000",
    "start_pts":0,
    "start_time" :"0.000000",
    "duration_ts":860160,
    "duration" :"17.920000",
    "bit_rate" :"1152000",
    "bits_per_raw_sample" :"24",
    "disposition" :
    "default":0,
    "dub":0,
    "original":0,
    "comment":0,
    "lyrics":0,
    "karaoke":0,
    "forced":0,
    "hearing_impaired":0,
    "visual_impaired":0,
    "clean_effects":0,
    "attached_pic":0,
    "timed_thumbnails":0
    ,
    "tags" :
    "file_package_umid" :"0x060A2B340101010501010D2313000000968F75C6B5B34D649967EEDD0076B989"

    ,

    "index":5,
    "codec_name" :"pcm_s24le",
    "codec_long_name" :"PCM signed 24-bit little-endian",
    "codec_type" :"audio",
    "codec_time_base" :"1/48000",
    "codec_tag_string" :"[0][0][0][0]",
    "codec_tag" :"0x0000",
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