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• x86/vvc/vvc_mc : set the correct number of used registers in vvc_w_avg functions

  1er février 2024, par James Almer

  x86/vvc/vvc_mc : set the correct number of used registers in vvc_w_avg functions
  Fixes crashes when running fate-vvc-conformance-WP_A_3 on Win64 targets
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libavcodec/x86/vvc/vvc_mc.asm

• How to set the reference frame number correctly in ffmpeg x265

  8 mai 2020, par luodonghui1234

  I have a problem when using x265 in ffmpeg. The following code is that I use x265 params to set the reference frame number of P frame. I have checked the x265 document and set the — ref parameter to achieve the purpose I want, but it is invalid. The resolution of the encoded P frame header to num_negative_pics is always 2. I need to set this number to 1, that is to say, any P frame only needs to refer to the previous frame.

  



  m_cVideoCodeCtxt->flags |= AV_CODEC_FLAG_CLOSED_GOP;
m_cVideoCodeCtxt->rc_max_rate    = m_iRate;
m_cVideoCodeCtxt->rc_min_rate    = (int)m_iRate / 2;
m_cVideoCodeCtxt->rc_buffer_size = m_iRate;
m_cVideoCodeCtxt->bit_rate       = (int)m_iRate;

m_cVideoCodeCtxt->width          = 1920;    
m_cVideoCodeCtxt->height         = 1080;    
m_cVideoCodeCtxt->time_base      = { 1, 30 };
m_cVideoCodeCtxt->framerate      = { 30 ,1};
m_cVideoCodeCtxt->frame_number   = 1;  
m_cVideoCodeCtxt->gop_size       = 30; 
m_cVideoCodeCtxt->max_b_frames   = 0; 
m_cVideoCodeCtxt->thread_count   = 4;
m_cVideoCodeCtxt->pix_fmt        = pix_fmt;
m_cVideoCodeCtxt->codec_type     = AVMEDIA_TYPE_VIDEO;
m_cVideoCodeCtxt->codec_id       = m_fVideoFmCtxt->video_codec_id;
int ret = av_opt_set(m_cVideoCodeCtxt->priv_data, "preset", "ultrafast", 0);
ret = av_opt_set(m_cVideoCodeCtxt->priv_data, "tune", "zerolatency", 0);

CString cstrX265Parms = L"";
cstrX265Parms.Format(L"keyint=%d:ref=1:no-open-gop=1:weightp=1:b_pyramid=1:weightb=0:cutree=0:rc-lookahead=0:bframes=0:scenecut=0:b-adapt=0:repeat-headers=1:max-merge=1", m_iFrameRate);
USES_CONVERSION;
char* cX265Parms = W2A(cstrX265Parms);
ret = av_opt_set(m_cVideoCodeCtxt->priv_data, "x265-params", cX265Parms, 0);


  



  Is there a problem with my code ? Or need to cooperate with other parameter settings

  


• How to use ffmpeg convert this file,the normal args can't convert it,it just convert one frame

  18 juillet 2017, par ggggle

  The Video Link is here.

  $ffmpeg -i 9.mp4 out.mp4
  
  ffmpeg version N-86676-g45dbb40cd1-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 5.4.1 (Debian 5.4.1-11) 20170519
  
    configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-5 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
  
    libavutil      55. 67.100 / 55. 67.100
  
    libavcodec     57.100.102 / 57.100.102
  
    libavformat    57. 75.100 / 57. 75.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 94.100 /  6. 94.100
  
    libswscale      4.  7.101 /  4.  7.101
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '9.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      artist          : moodyz
  
      encoder         : Lavf57.75.100
  
      copyright       : moodyz
  
    Duration: 00:00:21.02, start: 0.000000, bitrate: 5662 kb/s
  
      Stream #0:0(jpn): Video: vc1 (Advanced) (vc-1 / 0x312D6376), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 5658 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (vc1 (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x3eabba0] using SAR=1/1
  
  [libx264 @ 0x3eabba0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x3eabba0] profile High, level 4.0
  
  [libx264 @ 0x3eabba0] 264 - core 152 r19 ba24899 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'out.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      artist          : moodyz
  
      copyright       : moodyz
  
      encoder         : Lavf57.75.100
  
      Stream #0:0(jpn): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
        encoder         : Lavc57.100.102 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  frame=    1 fps=0.0 q=29.0 Lsize=      33kB time=00:00:00.00 bitrate=8254060.6kbits/s speed=0.000122x    
  
  video:32kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.640781%
  
  [libx264 @ 0x3eabba0] frame I:1     Avg QP:23.97  size: 32485
  
  [libx264 @ 0x3eabba0] mb I  I16..4: 24.7% 72.0%  3.3%
  
  [libx264 @ 0x3eabba0] 8x8 transform intra:72.0%
  
  [libx264 @ 0x3eabba0] coded y,uvDC,uvAC intra: 31.5% 51.4% 4.9%
  
  [libx264 @ 0x3eabba0] i16 v,h,dc,p: 50% 28% 11% 10%
  
  [libx264 @ 0x3eabba0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 58% 19% 17%  1%  1%  1%  1%  1%  1%
  
  [libx264 @ 0x3eabba0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 53% 22%  7%  4%  2%  5%  2%  3%  2%
  
  [libx264 @ 0x3eabba0] i8c dc,h,v,p: 47% 20% 31%  2%
  
  [libx264 @ 0x3eabba0] kb/s:7788.61

  As you can see,original video "Duration : 00:00:21.02",but the output file only "Duration 00:00:00.03".And the program exit no error.

  It didn’t convert entire file.

  What args I need to add ?