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  • FFMPEG-jpg sequence to H.264 generate best result

    18 octobre 2015, par Ziki

    I have a jpg sequence which I need to convert to mp4, and I need to get the best result.

    As I understood, I need to supply the ’ffmpeg’ cmdln the following : bitrate, minrate, maxrate and bufsize.

    The only thing that I found about calculating the above params, is if I have the final output file size. But considering I want the best quality, I don’t know the final output file size, and I don’t care what it will be.

    Of course I have the framerate and the total frames.

    Here’s my ffmpeg cmdln :

    ffmpeg 
    
-r 24 
    
-start_number 0 
    
-i "C:\pathToSequence\%06d.jpg" 
    
-c copy 
    
-vframes 792 
    
-threads 16 
    
-pix_fmt yuv420p 
    
-c:v libx264 
    
"C:\pathToOutput\result.mp4"

    The total size of the sequence is 128MB, 792 frames, 24 framerate, resolution 1280x720.

    Until now I used to add the following to the ffmpeg cmdln :

    -b:v 10000k -minrate 10000k -maxrate 10000k -bufsize 10000k

    And if it was 1080p :

    -b:v 20000k -minrate 20000k -maxrate 20000k -bufsize 20000k

    And I figured that if I put the max value that ffmpeg can handle (2147480) it will generate almost the same result as the above. But I think it’s a bad approach(correct me if I’m wrong).

    So if I need to get the best result, how do I calculate it(or I can simply put the max value) ?

    Also I would like if you have another helpful flags to add to make the best final result.

    —EDIT—

    Here’s the updated command :

    O:\tools\ffmpeg -framerate 24 -start_number 0 -i "C:\share\localProcess\test\%05d.jpg" -vframes 54 -pix_fmt yuv420p -c:v libx264 -preset veryslow -qp 1 "C:\share\localProcess\result\result.mp4"

    And this is the ouptout :

    ffmpeg version N-72383-g7206b94 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with gcc 4.9.2 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
    
  libavutil      54. 26.100 / 54. 26.100
    
  libavcodec     56. 41.100 / 56. 41.100
    
  libavformat    56. 33.101 / 56. 33.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 16.101 /  5. 16.101
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, image2, from 'C:\share\localProcess\test\%05d.jpg':
    
  Duration: 00:00:02.25, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 72:72 DAR 16:9], 24 fps, 24 tbr, 24 tbn, 24 tbc
    
[swscaler @ 0000000004d6bf60] deprecated pixel format used, make sure you did set range correctly
    
[libx264 @ 0000000004d7a9e0] using SAR=1/1
    
[libx264 @ 0000000004d7a9e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0000000004d7a9e0] profile High, level 5.0
    
[libx264 @ 0000000004d7a9e0] 264 - core 146 r2538 121396c - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=16 deblock=1:0:0 analyse=0x3:0x133 me=umh subme=9 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=24 chroma_me=1 trellis=2 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=8 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=1 ip_ratio=1.40 pb_ratio=1.30 aq=0
    
Output #0, mp4, to 'C:\share\localProcess\result\result.mp4':
    
  Metadata:
    
    encoder         : Lavf56.33.101
    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 24 fps, 12288 tbn, 24 tbc
    
    Metadata:
    
      encoder         : Lavc56.41.100 libx264
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
    
Press [q] to stop, [?] for help
    
frame=   54 fps= 38 q=-1.0 Lsize=     542kB time=00:00:02.16 bitrate=2050.0kbits/s
    
video:541kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.251171%
    
[libx264 @ 0000000004d7a9e0] frame I:1     Avg QP: 0.00  size: 23629
    
[libx264 @ 0000000004d7a9e0] frame P:22    Avg QP: 1.00  size: 16146
    
[libx264 @ 0000000004d7a9e0] frame B:31    Avg QP: 2.81  size:  5623
    
[libx264 @ 0000000004d7a9e0] consecutive B-frames: 16.7% 29.6% 16.7%  0.0%  9.3%  0.0% 13.0% 14.8%  0.0%
    
[libx264 @ 0000000004d7a9e0] mb I  I16..4: 74.9% 20.2%  4.9%
    
[libx264 @ 0000000004d7a9e0] mb P  I16..4:  0.3%  0.1%  1.2%  P16..4:  2.7%  0.4%  0.8%  0.2%  0.1%    skip:94.2%
    
[libx264 @ 0000000004d7a9e0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  3.0%  0.4%  0.5%  direct: 0.3%  skip:95.7%  L0:56.0% L1:40.5% BI: 3.5%
    
[libx264 @ 0000000004d7a9e0] 8x8 transform intra:16.5% inter:18.4%
    
[libx264 @ 0000000004d7a9e0] direct mvs  spatial:54.8% temporal:45.2%
    
[libx264 @ 0000000004d7a9e0] coded y,uvDC,uvAC intra: 33.9% 49.8% 49.5% inter: 1.3% 2.9% 2.9%
    
[libx264 @ 0000000004d7a9e0] i16 v,h,dc,p: 79% 13%  4%  4%
    
[libx264 @ 0000000004d7a9e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 22% 48%  2%  4%  6%  3%  1%  2%
    
[libx264 @ 0000000004d7a9e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 13% 43%  5%  6%  4%  5%  5%  6%
    
[libx264 @ 0000000004d7a9e0] i8c dc,h,v,p: 78% 12%  7%  3%
    
[libx264 @ 0000000004d7a9e0] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0000000004d7a9e0] ref P L0: 65.7%  2.4%  8.9%  4.5%  2.3%  3.0%  2.8%  3.9%  3.5%  0.8%  0.3%  0.5%  0.3%  0.5%  0.2%  0.3%
    
[libx264 @ 0000000004d7a9e0] ref B L0: 76.9% 12.0%  3.4%  0.7%  3.6%  0.5%  2.1%  0.4%  0.1%  0.0%  0.1%  0.0%  0.1%  0.1%
    
[libx264 @ 0000000004d7a9e0] ref B L1: 98.2%  1.8%
    
[libx264 @ 0000000004d7a9e0] kb/s:1966.80

    Link to download JPG sequence.

    Link to download the result.

  • FFmpeg : concat protocol gives corrupt output and skips few frames

    11 décembre 2018, par Prashant_Sarin

    Using :

    var command = "-y -i concat:$concatString -c copy -bsf:a aac_adtstoasc $outputFile"

    output video skips few frames in between and jumps from 4th second to 6th sec

    If i use :

    var command = "-y -i concat:$concatString -c:v libx264 -preset ultrafast -crf 30 $outputFile"

    Then, the output is fine but it is taking too much time with the warning of

    [mp4 @ 0xf7228600] Non-monotonous DTS in output stream 0:1

    The logs are as :

    2018-12-11 13:27:19.146 7435-7435/com.onedayapp.mystory.dev D/com.onedayapp.mystory.oneday.controllers.service.VideoCompositionService: onProgress ----Merge---- [mp4 @ 0xf4524c00] Non-monotonous DTS in output stream 0:1; previous: 705608, current: 210096; changing to 705609. This may result in incorrect timestamps in the output file.
    
2018-12-11 13:27:19.146 7435-7435/com.onedayapp.mystory.dev D/com.onedayapp.mystory.oneday.controllers.service.VideoCompositionService: onProgress ----Merge---- frame=  745 fps=0.0 q=-1.0 Lsize=    1823kB    time=00:03:04.84 bitrate=  80.8kbits/s speed= 758x    
    
2018-12-11 13:27:19.147 7435-7435/com.onedayapp.mystory.dev D/com.onedayapp.mystory.oneday.controllers.service.VideoCompositionService: onProgress ----Merge---- video:1781kB audio:32kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.563412%
    
2018-12-11 13:27:19.148 7435-7435/com.onedayapp.mystory.dev D/com.onedayapp.mystory.oneday.controllers.service.VideoCompositionService: Merged successfully message---------ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 4.8 (GCC)  configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
    
  libavutil      55. 17.103 / 55. 17.103
    
  libavcodec     57. 24.102 / 57. 24.102
    
  libavformat    57. 25.100 / 57. 25.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 31.100 /  6. 31.100
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0xf4524600] Auto-inserting h264_mp4toannexb bitstream filter
    
Input #0, concat, from '/storage/emulated/0/OneDay/Member/128/Video/Story/94071beb-0b5f-4588-b388-ff78d24c07a8/concatVideo.txt':
    
  Duration: N/A, start: 0.000000, bitrate: 695 kb/s
    
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 693 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 2 kb/s
    
    Metadata:
    
      handler_name    : SoundHandler
    
Output #0, mp4, to '/storage/emulated/0/OneDay/Member/128/Video/Story/94071beb-0b5f-4588-b388-ff78d24c07a8/Final.mp4':
    
  Metadata:
    
    encoder         : Lavf57.25.100
    
    Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 693 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, 2 kb/s
    
    Metadata:
    
      handler_name    : SoundHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0xf4524600] Auto-inserting h264_mp4toannexb bitstream filter
    
[mp4 @ 0xf4524c00] Non-monotonous DTS in output stream 0:1; previous: 132096, current: 24152; changing to 132097. This may result in incorrect timestamps in the output file.
    
[mp4 @ 0xf4524c00] Non-monotonous DTS in output stream 0:1; previous: 132097, current: 25176; changing to 132098. This may result in incorrect timestamps in the output file.
    
[mp4 @ 0xf4524c00] Non-monotonous DTS in output stream 0:1; previous: 132098, current: 26200; changing to 132099. This may result in incorrect timestamps in the output file.
    
[mp4 @ 0xf4524c00] Non-monotonous DTS in output stream 0:1; previous: 132099, current: 27224; changing to 132100. This may result in incorrect timestamps in the output file.
    
[mp4 @ 0xf4524c00] Non-monotonous DTS in output stream 0:1; previous: 132100, current: 28248; changing to 132101. This may result in incorrect timestamps in the output file.
    
[mp4 @ 0xf4524c00] Non-monotonous DTS in output stream 0:1; previous: 132101, current: 29272; changing to 132102. This may result in incorrect timestamps in the output file.

    Last few lines are onSuccess() message of when i run with concat Demuxer.
    All files are *.mp4 files.

  • Restreaming hls stream to rtmp stream using ffmpeg

    7 décembre 2018, par dhruv shah

    I am trying to re-stream an hls stream to rtmp stream using ffmpeg :

    as example :

    ffmpeg -loglevel debug -re -i "https://hddn01.skylinewebcams.com/live.m3u8?a=c6kekc4h116t1m5jbtei273bq0" -bufsize 4000k -preset ultrafast -vcodec libx264 -tune zerolatency -b:v 900k -an -f flv rtmp://127.0.0.1/live/stream.flv

    The stream is available on the website :
    https://www.skylinewebcams.com/en/webcam/malta/malta/traffic/traffic-cam2.html

    The issue is that input fps value is very low and q value is very high or -1 most of the times.

    Please take a look at the following log :

    ffmpeg version 3.4.2-1~16.04.york0.2 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.9) 20160609
    
  configuration: --prefix=/usr --extra-version='1~16.04.york0.2' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avi
    
synth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --e
    
nable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --e
    
nable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi
    
 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 78.100 / 55. 78.100
    
  libavcodec     57.107.100 / 57.107.100
    
  libavformat    57. 83.100 / 57. 83.100
    
  libavdevice    57. 10.100 / 57. 10.100
    
  libavfilter     6.107.100 /  6.107.100
    
  libavresample   3.  7.  0 /  3.  7.  0
    
  libswscale      4.  8.100 /  4.  8.100
    
  libswresample   2.  9.100 /  2.  9.100
    
  libpostproc    54.  7.100 / 54.  7.100
    
[hls,applehttp @ 0x5649bd7463e0] Opening 'https://hddn01.skylinewebcams.com/03042101ANC5-1544185331502.ts' for reading
    
[hls,applehttp @ 0x5649bd7463e0] Could not find codec parameters for stream 1 (Audio: aac ([15][0][0][0] / 0x000F), 0 channels, fltp): unspecified sample rate
    
Consider increasing the value for the 'analyzeduration' and 'probesize' options
    
Input #0, hls,applehttp, from 'https://hddn01.skylinewebcams.com/live.m3u8?a=c6kekc4h116t1m5jbtei273bq0':
    
  Duration: N/A, start: 22431.033000, bitrate: N/A
    
  Program 0 
    
    Metadata:
    
      variant_bitrate : 0
    
    Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1280x1024, 12 fps, 12 tbr, 90k tbn, 180k tbc
    
    Metadata:
    
      variant_bitrate : 0
    
    Stream #0:1: Audio: aac ([15][0][0][0] / 0x000F), 0 channels, fltp
    
    Metadata:
    
      variant_bitrate : 0
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
Press [q] to stop, [?] for help
    
[libx264 @ 0x5649bdc1ba80] VBV maxrate unspecified, assuming CBR
    
[libx264 @ 0x5649bdc1ba80] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
    
[libx264 @ 0x5649bdc1ba80] profile Constrained Baseline, level 3.2
    
[libx264 @ 0x5649bdc1ba80] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=4 lookahead_threads=4 sliced_threads=1 slices=4 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=12 scenecut=0 intra_refresh=0 rc_lookahead=0 rc=cbr mbtree=0 bitrate=900 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=900 vbv_bufsize=4000 nal_hrd=none filler=0 ip_ratio=1.40 aq=0
    
Output #0, flv, to 'rtmp://127.0.0.1/live/dhruv.flv':
    
  Metadata:
    
    encoder         : Lavf57.83.100
    
    Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p, 1280x1024, q=-1--1, 900 kb/s, 12 fps, 1k tbn, 12 tbc
    
    Metadata:
    
      variant_bitrate : 0
    
      encoder         : Lavc57.107.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/900000 buffer size: 4000000 vbv_delay: -1
    
[hls,applehttp @ 0x5649bd7463e0] Opening 'https://hddn01.skylinewebcams.com/03042101ANC5-1544185339480.ts' for reading
    
[hls,applehttp @ 0x5649bd7463e0] Opening 'https://hddn01.skylinewebcams.com/03042101ANC5-1544185347525.ts' for reading
    
[hls,applehttp @ 0x5649bd7463e0] Opening 'https://hddn01.skylinewebcams.com/03042101ANC5-1544185355483.ts' for reading
    
[hls,applehttp @ 0x5649bd7463e0] Opening 'https://hddn01.skylinewebcams.com/03042101ANC5-1544185363466.ts' for reading
    
[hls,applehttp @ 0x5649bd7463e0] Opening 'https://hddn01.skylinewebcams.com/03042101ANC5-1544185371496.ts' for reading
    
[flv @ 0x5649bdc1aae0] Failed to update header with correct duration.939.0kbits/s speed=0.991x    
    
[flv @ 0x5649bdc1aae0] Failed to update header with correct filesize.
    
frame=  552 fps= 12 q=33.0 Lsize=    5261kB time=00:00:45.91 bitrate= 938.6kbits/s speed=0.992x    

    Does anyone know how to stream in real-time ?

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