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• Resize video to same size

  5 septembre 2018, par Max Grigoriev

  I have a list of video files with different resolutions. And I should to change them to 1920x1080. It’s easy to make using ffmpeg and scale filter but result video is wrong aspect ratio. If I use aspect ratio then output resolution isn’t fullhd. Is it possible to change resolution to best available like scale="’if(gt(a,16/9),1920,-1)’ :’if(gt(a,16/9),-1,1080)’"
  and all remaining space is filled in black color ?

• Why android ffmpeg takes so long time to resize mp4 video from high resolution ?

  1er septembre 2018, par Kasim Rangwala

  I’m resizing  30 sec long ( 59.98 MB) mp4 video with resolution of 1920 X 1080 to 1280 X 720 using following ffmpeg command in android.

  ["-i", inputVideo!!.path, "-vf", "scale=720:1280", outputVideo.path, "-hide_banner"]

  converted video output is very good ( 6.6MB). but, ffmpeg conversion take so much time. Is there any options available that I can reduce the conversion time ?

  update

  If output format is other than mp4. it is fine but, conversion time must be reduce.

  Thanks.

• Video merging ffmpeg taking more than 15 minutes for 5mb video

  27 juillet 2018, par stan wyck

  I am using below ffmpeg command by bravobit ffmpeg android library to merge videos with different resolution and bit rate it takes more than 15 minutes for total of 5mb videos

  -i video1.mp4 -i video2.3gp -filter_complex [1:v]scale=iw*min(1920/iw\,1080/ih):ih*min(1920/iw\,1080/ih),
pad=1920:1080:(1920-iw*min(1920/iw\,1080/ih))/2:(1080-ih*min(1920/iw\,1080/ih))/2,setsar=1[v1];
[2:v]scale=iw*min(1920/iw\,1080/ih):ih*min(1920/iw\,1080/ih),
pad=1920:1080:(1920-iw*min(1920/iw\,1080/ih))/2:(1080-ih*min(1920/iw\,1080/ih))/2,setsar=1[v2];
[v1][1:a][v2][2:a]concat=n=2:v=1:a=1[outv][outa]
"-ab", "48000", "-ac", "2", "-ar", "22050", "-s", "1920x1080", "-vcodec", "libx264", "-crf", "27", "-q", "4", "-preset", "ultrafast", newVideoPath, "-hide_banner"

  Log onSuccess

  ffmpeg version n4.0-39-gda39990 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 4.9.x (GCC) 20150123 (prerelease)
  configuration : —target-os=linux —cross-prefix=/root/bravobit/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- —arch=arm —cpu=cortex-a8 —enable-runtime-cpudetect —sysroot=/root/bravobit/ffmpeg-android/toolchain-android/sysroot —enable-pic —enable-libx264 —enable-ffprobe —enable-libopus —enable-libvorbis —enable-libfdk-aac —enable-libfreetype —enable-libfribidi —enable-libmp3lame —enable-fontconfig —enable-libvpx —enable-libass —enable-yasm —enable-pthreads —disable-debug —enable-version3 —enable-hardcoded-tables —disable-ffplay —disable-linux-perf —disable-doc —disable-shared —enable-static —enable-runtime-cpudetect —enable-nonfree —enable-network —enable-avresample —enable-avformat —enable-avcodec —enable-indev=lavfi —enable-hwaccels —enable-ffmpeg —enable-zlib —enable-gpl —enable-small —enable-nonfree —pkg-config=pkg-config —pkg-config-flags=—static —prefix=/root/bravobit/ffmpeg-android/build/armeabi-v7a —extra-cflags=’-I/root/bravobit/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all’ —extra-ldflags=’-L/root/bravobit/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie’ —extra-cxxflags=
  libavutil 56. 14.100 / 56. 14.100
  libavcodec 58. 18.100 / 58. 18.100
  libavformat 58. 12.100 / 58. 12.100
  libavdevice 58. 3.100 / 58. 3.100
  libavfilter 7. 16.100 / 7. 16.100
  libavresample 4. 0. 0 / 4. 0. 0
  libswscale 5. 1.100 / 5. 1.100
  libswresample 3. 1.100 / 3. 1.100
  libpostproc 55. 1.100 / 55. 1.100
  Input #0, lavfi, from ’anullsrc=channel_layout=stereo:sample_rate=44100’ :
  Duration : N/A, start : 0.000000, bitrate : 705 kb/s
  Stream #0:0 : Audio : pcm_u8, 44100 Hz, stereo, u8, 705 kb/s
  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from ’/sdcard/DigitalDashboard/temp/10.57.08.mp4’ :
  Metadata :
  major_brand : isom
  minor_version : 512
  compatible_brands : isomiso2avc1mp41
  encoder : Lavf58.12.100
  Duration : 00:00:15.00, start : 0.000000, bitrate : 1495 kb/s
  Stream #1:0(und) : Video : h264 (avc1 / 0x31637661), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], 1337 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  Metadata :
  handler_name : VideoHandler
  Stream #1:1(und) : Audio : aac (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 153 kb/s (default)
  Metadata :
  handler_name : SoundHandler
  Input #2, mov,mp4,m4a,3gp,3g2,mj2, from ’/sdcard/DigitalDashboard/temp/10.57.19.mp4’ :
  Metadata :
  major_brand : isom
  minor_version : 512
  compatible_brands : isomiso2avc1mp41
  encoder : Lavf58.12.100
  Duration : 00:00:10.03, start : 0.000000, bitrate : 1823 kb/s
  Stream #2:0(und) : Video : h264 (avc1 / 0x31637661), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], 1671 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  Metadata :
  handler_name : VideoHandler
  Stream #2:1(und) : Audio : aac (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 152 kb/s (default)
  Metadata :
  handler_name : SoundHandler
  Stream mapping :
  Stream #1:0 (h264) -> scale
  Stream #1:1 (aac) -> concat:in0:a0
  Stream #2:0 (h264) -> scale
  Stream #2:1 (aac) -> concat:in1:a0
  concat:out:v0 -> Stream #0:0 (libx264)
  concat:out:a0 -> Stream #0:1 (aac)
  Press [q] to stop, [?] for help
  [libx264 @ 0xb8b42e90] -qscale is ignored, -crf is recommended.
  [libx264 @ 0xb8b42e90] using SAR=1/1
  [libx264 @ 0xb8b42e90] using cpu capabilities : ARMv6 NEON
  [libx264 @ 0xb8b42e90] profile Constrained Baseline, level 3.1
  [libx264 @ 0xb8b42e90] 264 - core 152 r2851M ba24899 - 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=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=27.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
  Output #0, mp4, to ’/sdcard/DigitalDashboard/temp/10.57.25.mp4’ :
  Metadata :
  encoder : Lavf58.12.100
  Stream #0:0 : Video : h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 1024x576 [SAR 1:1 DAR 16:9], q=-1—1, 25 fps, 12800 tbn, 25 tbc (default)
  Metadata :
  encoder : Lavc58.18.100 libx264
  Side data :
  cpb : bitrate max/min/avg : 0/0/0 buffer size : 0 vbv_delay : -1
  Stream #0:1 : Audio : aac (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 48 kb/s (default)
  Metadata :
  encoder : Lavc58.18.100 aac
  frame= 7 fps=0.0 q=0.0 size= 0kB time=00:00:00.37 bitrate= 1.0kbits/s speed=0.737x
  frame= 21 fps= 21 q=27.0 size= 0kB time=00:00:00.88 bitrate= 0.4kbits/s speed=0.879x
  frame= 35 fps= 23 q=26.0 size= 256kB time=00:00:01.48 bitrate=1411.5kbits/s speed=0.979x
  frame= 50 fps= 25 q=27.0 size= 256kB time=00:00:02.04 bitrate=1026.5kbits/s speed=1.01x
  frame= 64 fps= 25 q=26.0 size= 512kB time=00:00:02.60 bitrate=1612.9kbits/s speed=1.02x
  frame= 79 fps= 26 q=25.0 size= 768kB time=00:00:03.20 bitrate=1963.5kbits/s speed=1.05x
  frame= 95 fps= 26 q=22.0 size= 768kB time=00:00:03.85 bitrate=1632.3kbits/s speed=1.07x
  frame= 110 fps= 27 q=24.0 size= 1024kB time=00:00:04.45 bitrate=1881.7kbits/s speed=1.08x
  frame= 126 fps= 27 q=23.0 size= 1024kB time=00:00:05.10 bitrate=1642.2kbits/s speed= 1.1x
  frame= 142 fps= 27 q=24.0 size= 1280kB time=00:00:05.75 bitrate=1821.0kbits/s speed=1.11x
  frame= 157 fps= 28 q=23.0 size= 1280kB time=00:00:06.31 bitrate=1660.3kbits/s speed=1.11x
  frame= 173 fps= 28 q=25.0 size= 1536kB time=00:00:06.96 bitrate=1806.4kbits/s speed=1.12x
  frame= 189 fps= 28 q=26.0 size= 1536kB time=00:00:07.61 bitrate=1652.2kbits/s speed=1.13x
  frame= 204 fps= 28 q=25.0 size= 1792kB time=00:00:08.21 bitrate=1786.0kbits/s speed=1.14x
  frame= 220 fps= 28 q=19.0 size= 1792kB time=00:00:08.87 bitrate=1655.1kbits/s speed=1.15x
  frame= 238 fps= 29 q=18.0 size= 2048kB time=00:00:09.56 bitrate=1753.8kbits/s speed=1.16x
  frame= 254 fps= 29 q=26.0 size= 2048kB time=00:00:10.26 bitrate=1634.7kbits/s speed=1.17x
  frame= 271 fps= 29 q=22.0 size= 2048kB time=00:00:10.91 bitrate=1537.3kbits/s speed=1.18x
  frame= 288 fps= 30 q=21.0 size= 2048kB time=00:00:11.56 bitrate=1450.9kbits/s speed=1.19x
  frame= 305 fps= 30 q=19.0 size= 2304kB time=00:00:12.26 bitrate=1539.5kbits/s speed=1.19x
  frame= 320 fps= 30 q=21.0 size= 2304kB time=00:00:12.86 bitrate=1467.3kbits/s speed=1.19x
  frame= 337 fps= 30 q=22.0 size= 2304kB time=00:00:13.51 bitrate=1396.7kbits/s speed=1.19x
  frame= 354 fps= 30 q=22.0 size= 2304kB time=00:00:14.21 bitrate=1328.2kbits/s speed= 1.2x
  frame= 371 fps= 30 q=20.0 size= 2560kB time=00:00:14.90 bitrate=1406.8kbits/s speed=1.21x
  frame= 387 fps= 30 q=25.0 size= 2560kB time=00:00:15.51 bitrate=1352.1kbits/s speed=1.21x
  frame= 402 fps= 30 q=27.0 size= 2816kB time=00:00:16.11 bitrate=1431.6kbits/s speed= 1.2x
  frame= 416 fps= 30 q=27.0 size= 2816kB time=00:00:16.67 bitrate=1383.7kbits/s speed= 1.2x
  frame= 430 fps= 30 q=27.0 size= 3072kB time=00:00:17.27 bitrate=1456.7kbits/s speed= 1.2x
  frame= 444 fps= 30 q=26.0 size= 3072kB time=00:00:17.83 bitrate=1411.2kbits/s speed=1.19x
  frame= 460 fps= 30 q=25.0 size= 3328kB time=00:00:18.43 bitrate=1478.8kbits/s speed=1.19x
  frame= 476 fps= 30 q=21.0 size= 3584kB time=00:00:19.08 bitrate=1538.3kbits/s speed=1.19x
  frame= 493 fps= 30 q=23.0 size= 3584kB time=00:00:19.78 bitrate=1484.1kbits/s speed= 1.2x
  frame= 511 fps= 30 q=24.0 size= 3840kB time=00:00:20.48 bitrate=1536.0kbits/s speed= 1.2x
  frame= 527 fps= 30 q=23.0 size= 4096kB time=00:00:21.13 bitrate=1588.0kbits/s speed= 1.2x
  frame= 542 fps= 30 q=25.0 size= 4096kB time=00:00:21.78 bitrate=1540.6kbits/s speed=1.21x
  frame= 558 fps= 30 q=25.0 size= 4352kB time=00:00:22.38 bitrate=1592.7kbits/s speed=1.21x
  frame= 574 fps= 30 q=25.0 size= 4352kB time=00:00:22.98 bitrate=1550.9kbits/s speed=1.21x
  frame= 590 fps= 30 q=24.0 size= 4608kB time=00:00:23.63 bitrate=1597.0kbits/s speed=1.21x
  frame= 607 fps= 30 q=17.0 size= 4608kB time=00:00:24.38 bitrate=1548.3kbits/s speed=1.21x
  frame= 622 fps= 30 q=19.0 size= 4608kB time=00:00:24.93 bitrate=1513.7kbits/s speed=1.21x
  frame= 625 fps= 30 q=-1.0 Lsize= 4827kB time=00:00:25.03 bitrate=1579.9kbits/s speed=1.21x
  video:4345kB audio:470kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead : 0.251744%
  [libx264 @ 0xb8b42e90] frame I:3 Avg QP:20.33 size : 86455
  [libx264 @ 0xb8b42e90] frame P:622 Avg QP:23.46 size : 6736
  [libx264 @ 0xb8b42e90] mb I I16..4 : 100.0% 0.0% 0.0%
  [libx264 @ 0xb8b42e90] mb P I16..4 : 1.8% 0.0% 0.0% P16..4 : 37.9% 0.0% 0.0% 0.0% 0.0% skip:60.3%
  [libx264 @ 0xb8b42e90] coded y,uvDC,uvAC intra : 41.0% 51.8% 22.0% inter : 15.3% 10.0% 0.8%
  [libx264 @ 0xb8b42e90] i16 v,h,dc,p : 29% 27% 24% 20%
  [libx264 @ 0xb8b42e90] i8c dc,h,v,p : 42% 23% 22% 14%
  [libx264 @ 0xb8b42e90] kb/s:1423.72
  [aac @ 0xb8b81070] Qavg : 472.000