Newest 'ffmpeg' Questions - Stack Overflow

http://stackoverflow.com/questions/tagged/ffmpeg

Les articles publiés sur le site

  • ffmpeg error : Could not write header for output file #0 (incorrect codec parameters ?) : Muxer not found

    30 janvier 2016, par Benjamin Russell

    I am trying to segment a mp4 video file for HLS playback and I am getting the following error:

    "Could not write header for output file #0 (incorrect codec parameters ?): Muxer not found"

    Does anyone know what I am doing wrong?

    input command:

    sudo ffmpeg -y -i adwd.mp4 -vcodec copy -acodec copy -force_key_frames 30 -map 0  -f segment segment_list adwd.m3u8 -segment_time 10 -segment_format mpeg_ts -segment_list_type m3u8 segment%d.ts


    ffmpeg version 2.8.5 Copyright (c) 2000-2016 the FFmpeg developers
      built with Apple LLVM version 7.0.2 (clang-700.1.81)
      configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.5 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
      libavutil      54. 31.100 / 54. 31.100
      libavcodec     56. 60.100 / 56. 60.100
      libavformat    56. 40.101 / 56. 40.101
      libavdevice    56.  4.100 / 56.  4.100
      libavfilter     5. 40.101 /  5. 40.101
      libavresample   2.  1.  0 /  2.  1.  0
      libswscale      3.  1.101 /  3.  1.101
      libswresample   1.  2.101 /  1.  2.101
      libpostproc    53.  3.100 / 53.  3.100

    Video information:

    General / Container Stream #1
    Total Video Streams for this File.................1
    Total Audio Streams for this File.................1
    Video Codecs Used.................................AVC
    Audio Codecs Used.................................AAC LC
    File Format.......................................MPEG-4
    Play Time.........................................9h 1mn
    Total File Size...................................588 MiB
    Total Stream BitRate..............................152 Kbps
    Encoded with......................................Lavf56.40.101
Video Stream #1
    Codec (Human Name)................................AVC
    Codec (FourCC)....................................avc1
    Codec Profile.....................................High@L2.1
    Frame Width.......................................426 pixels
    Frame Height......................................240 pixels
    Frame Rate........................................29.970 fps
    Total Frames......................................973039
    Display Aspect Ratio..............................16:9
    Scan Type.........................................Progressive
    Color Space.......................................YUV
    Codec Settings (Summary)..........................CABAC / 4 Ref Frames
    QF (like Gordian Knot)............................0.005
    Codec Settings (CABAC)............................Yes
    Codec Settings (Reference Frames).................4
    Video Stream Length...............................9h 1mn 7s 68ms
    Video Stream BitRate..............................15.2 Kbps
    Video Stream BitRate Mode.........................VBR
    Bit Depth.........................................8 bits
    Video Stream Size.................................58.9 MiB (10%)
    Video Encoder.....................................x264 - core 148 r2601 a0cd7d3
    Video Encoder (Settings)..........................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
Audio Stream #1
    Codec.............................................AAC
    Codec (FourCC)....................................40
    Audio Stream Length...............................9h 1mn 7s 104ms
    Audio Stream BitRate..............................128 Kbps
    Audio Stream BitRate Mode.........................CBR
    Number of Audio Channels..........................2
    Audio Channel's Positions.........................Front: L R
    Sampling Rate.....................................44.1 KHz
    Audio Stream Size.................................495 MiB (84%)

  • rtmp Videos encoded with FFmpeg play too fast

    30 janvier 2016, par 江嘉荣

    play back too fast and loading Every once in a while

    here is the code ... please help...

    pFormatCtx = avformat_alloc_context();

out_filename = "rtmp://192.168.1.105:1935/jc";

 avformat_alloc_output_context2(&pFormatCtx, ofmt, "flv", out_filename);    

 ofmt = pFormatCtx->oformat;

if (avio_open(&pFormatCtx->pb,out_filename, AVIO_FLAG_WRITE) < 0){
    printf("Failed to open output file! \n");
    return -1;
}

video_st = avformat_new_stream(pFormatCtx, 0);
video_st->time_base.num = 1;
video_st->time_base.den = 30;


br = 400 * 1000;
pCodecCtx = video_st->codec;
pCodecCtx->codec_id = AV_CODEC_ID_H264;
pCodecCtx->codec_type = AVMEDIA_TYPE_VIDEO;
pCodecCtx->pix_fmt = PIX_FMT_YUV420P;

pCodecCtx->gop_size = 12;
 pCodecCtx->max_qdiff = 4;

pCodecCtx->qmin = 0;
pCodecCtx->qmax = 51;

pCodecCtx->bit_rate = br;
pCodecCtx->rc_min_rate =br;
pCodecCtx->rc_max_rate = br;
pCodecCtx->bit_rate_tolerance = br;
pCodecCtx->rc_buffer_size=br;

pCodecCtx->rc_initial_buffer_occupancy = pCodecCtx->rc_buffer_size*3/4;

pCodecCtx->time_base.num = 1;
pCodecCtx->time_base.den = 30;

start_time = 0;

pCodecCtx->max_b_frames = 3;

AVDictionary *param = 0;

if(pCodecCtx->codec_id == AV_CODEC_ID_H264) {

    av_dict_set(&param, "preset", "ultrafast", 0);
    av_dict_set(&param, "tune", "zerolatency", 0);
    av_dict_set(&param, "max_delay", "500", 0);
}

av_dump_format(pFormatCtx, 0, out_filename, AVIO_FLAG_WRITE);

pCodec = avcodec_find_encoder(AV_CODEC_ID_H264);

avformat_write_header(pFormatCtx, NULL);

y_size = pCodecCtx->width * pCodecCtx->height;

return 0;

    get pFrame

        pFrame->width = encoder_h264_frame_width;
    pFrame->height = encoder_h264_frame_height;
    pFrame->format = PIX_FMT_YUV420P;

    I don't know if it's right way to set the pFrame->pts here...

        pFrame->pts = av_rescale_q(framecnt, pCodecCtx->time_base, video_st-    >codec->time_base);
    avpicture_fill((AVPicture *)pFrame, picture_buf, pCodecCtx->pix_fmt, pCodecCtx->width,    pCodecCtx->height);
    pkt.data = NULL; 
    pkt.size = 0;

    int got_picture = 0;

    int ret = avcodec_encode_video2(pCodecCtx, &pkt, pFrame, &got_picture);
    framecnt++;
    if(ret < 0) {
    }
    if (got_picture=) {
        pkt.stream_index = video_st->index;

    is it right ?

            pkt.pts = av_rescale_q(pkt.pts, video_st->codec->time_base, video_st->time_base);
        pkt.dts = av_rescale_q(pkt.dts, video_st->codec->time_base, video_st->time_base); 

        ret = av_interleaved_write_frame(pFormatCtx, &pkt);

    }
    av_frame_free(&pFrame);
    av_free_packet(&pkt);
    free(yuv420_data);

    This problem has troubled me for a lot of days....

  • Installing ffmpeg on CentOS 6.6

    30 janvier 2016, par Kristaps Drozdovskis

    Im trying to install ffmpeg,.. When I write comand:

    git clone --depth 1 http://source.ffmpeg.org/git/ffmpeg.git

    I got this error.. why??

    Initialized empty Git repository in /root/ffmpeg_sources/ffmpeg/ffmpeg/.git/ fatal: dumb http transport does not support --depth

    Installing from this source.. https://trac.ffmpeg.org/wiki/CompilationGuide/Centos

  • How to convert the MP4 video file from images without audio using FFMPEG ?

    30 janvier 2016, par Rama Lingam

    I am converting the MP4 video file $output from some images and one audio file. But now I want to convert the same MP4 video file without audio. How to do it?

    Here is my sample code:

    // Convert Video from audio and images
exec("$ffmpeg -framerate 1/5 -i $convImgPath -i $convAudioPath -c:v libx264 -c:a aac -strict experimental -b:a 16k -shortest $output");

    Please update my code where I am change.

  • Is it possible install only ffprobe ? [on hold]

    30 janvier 2016, par Kristaps Drozdovskis

    i have installed ffmpeg. But missed ffprobe. Is it posible to install only ffprobe? I have looked all around.. but can't find a answer.

Navigation

Sites Web