Recherche avancée

Sur d’autres sites (11569)

• Revision 431aaefbec : Replacing 1 mi_{width, height}_log2() with lookup tables. Change-Id : Iba91ff

  19 décembre 2013, par Dmitry Kovalev

  Changed Paths :
   Modify /vp9/encoder/vp9_encodeframe.c

  
  
  Replacing 1 << mi_width, height_log2() with lookup tables.

  Change-Id : Iba91ff1e797a83517e2cd7c3ab86cba39f39415b

• ffmpeg drawtext box height variies depending on text

  13 mars 2019, par NFpeter

  I use ffmpeg with zoompan and drawtext filter. I’m writing 4 lines of text in a box.
  Now I’ve the problem that the space between the boxes variies depending on the text height.

  Is there a way to set a fixed height for the text box ?
  Or is it possible to calculate the text position depending on the current text ?

  Here my call with 2 lines of text

  ffmpeg -ss 0 -t 10 -i white.png -y -filter_complex [0:v]zoompan='z=min(zoom+0.10143,1.217217)':x=iw/2-(iw/zoom/2):y=ih/2-(ih/zoom/2):d=25*6.0760000000000005:,trim=duration=6.0760000000000005[v0];[v0]drawtext=text=f:fontcolor=white:fontsize=40:box=1:boxcolor=black@0.8:boxborderw=15:alpha=1:x=w/20:y=(h/1.11)-th*0.5[v2];[v2]drawtext=text=f:fontcolor=white:fontsize=40:box=1:boxcolor=black@0.8:boxborderw=15:alpha=1:x=w/20:y=(h/1.246)-th*0.5 -c:v libx264 -r 25 -pix_fmt yuv420p -strict -2 out.mp4

  

• FFPROBE SWAPS WIDTH AND HEIGHT

  23 septembre 2022, par Chidozie Duru

  I just noticed that ffprobe swaps the width and height of some videos when fetching the data of those videos. Please help suggest how to go about this and get it right or any other package that is confirmed to work. Below is the resulting output after i used ffprobe to request for video metadata. I just requested the width and height, while some are correct, others are not as it swaps the value for width and height.

  &#xA;

          {
        streams: [
        {
        index: 0,
        codec_name: 'aac',
        codec_long_name: 'AAC (Advanced Audio Coding)',
        profile: 'LC',
        codec_type: 'audio',
        codec_tag_string: 'mp4a',
        codec_tag: '0x6134706d',
        sample_fmt: 'fltp',
        sample_rate: 32000,
        channels: 1,
        channel_layout: 'mono',
        bits_per_sample: 0,
        id: '0x1',
        r_frame_rate: '0/0',
        avg_frame_rate: '0/0',
        time_base: '1/32000',
        start_pts: 0,
        start_time: 0,
        duration_ts: 12228608,
        duration: 382.144,
        bit_rate: 126250,
        max_bit_rate: 'N/A',
        bits_per_raw_sample: 'N/A',
        nb_frames: 11942,
        nb_read_frames: 'N/A',
        nb_read_packets: 'N/A',
        extradata_size: 2,
        tags: [Object],
        disposition: [Object]
        },
        {
        index: 1,
        codec_name: 'h264',
        codec_long_name: 'H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10',
        profile: 'High',
        codec_type: 'video',
        codec_tag_string: 'avc1',
        codec_tag: '0x31637661',
        width: 1920,
        height: 1080,
        coded_width: 1920,
        coded_height: 1080,
        closed_captions: 0,
        film_grain: 0,
        has_b_frames: 0,
        sample_aspect_ratio: 'N/A',
        display_aspect_ratio: 'N/A',
        pix_fmt: 'yuv420p',
        level: 50,
        color_range: 'unknown',
        color_space: 'unknown',
        color_transfer: 'unknown',
        color_primaries: 'unknown',
        chroma_location: 'unspecified',
        field_order: 'progressive',
        refs: 1,
        is_avc: 'true',
        nal_length_size: 4,
        id: '0x2',
        r_frame_rate: '25/1',
        avg_frame_rate: '25/1',
        time_base: '1/30000',
        start_pts: 0,
        start_time: 0,
        duration_ts: 11463600,
        duration: 382.12,
        bit_rate: 183454,
        max_bit_rate: 'N/A',
        bits_per_raw_sample: 8,
        nb_frames: 9553,
        nb_read_frames: 'N/A',
        nb_read_packets: 'N/A',
        extradata_size: 29,
        tags: [Object],
        disposition: [Object]
        }
        ],
        format: {
        filename: './input4.mp4',
        nb_streams: 2,
        nb_programs: 0,
        format_name: 'mov,mp4,m4a,3gp,3g2,mj2',
        format_long_name: 'QuickTime / MOV',
        start_time: 0,
        duration: 382.144,
        size: 14896948,
        bit_rate: 311860,
        probe_score: 100,
        tags: {
        major_brand: 'mp42',
        minor_version: '0',
        compatible_brands: 'isommp42',
        creation_time: '2022-09-23T20:39:00.000000Z'
        }
        },
        chapters: []
        }


  &#xA;