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• ffmpeg for android, out of memory on encoding h264

  15 juin 2018, par Rafael Lima

  I’m getting an weird error when enconding a video with ffmpeg on android

  Failed to inject frame into filter network: Out of memory

  Althoug is a pretty objective error, I do believe this is some "generic message" for another problem, because the video I used for testing is 17MB and less than 11 seconds length and I’ve sucessfully tested with videos bigger than 200MB and longer than 5min

  This problem happens to any video vertical videos recorded on my phone (the videos were recorded and play fine on my phone but i cant reencode them... other video h264 were encoded fine on same phone)

  this is ffmpeg output

  ffmpeg version 4.0 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with Android (4691093 based on r316199) clang version 6.0.2 (https://android.googlesource.com/toolchain/clang 183abd29fc496f55536e7d904e0abae47888fc7f) (https://android.googlesource.com/toolchain/llvm 34361f192e41ed6e4e8f9aca80a4ea7e9856f327) (based on LLVM 6.0.2svn)
  
    configuration: --prefix=/home/rafa/Desktop/m4/build --target-os=android --arch=i686 --cpu=i686 --cross-prefix=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/i686-linux-android- --enable-cross-compile --cc=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang --cxx=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang++ --pkg-config=/usr/bin/pkg-config --pkg-config-flags=--static --enable-pic --enable-gpl --enable-nonfree --enable-static --disable-shared --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-doc --disable-devices --enable-libx264 --enable-libfdk-aac --enable-bsf=aac_adtstoasc --disable-asm
  
    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
  
    libswscale      5.  1.100 /  5.  1.100
  
    libswresample   3.  1.100 /  3.  1.100
  
    libpostproc    55.  1.100 / 55.  1.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/data/com.tomatedigital.toolsforinstagram/qqq.mp4':
  
    Metadata:  
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      creation_time   : 2018-06-09T04:28:55.000000Z
  
      location        : -08.0638-034.8723/
  
      location-eng    : -08.0638-034.8723/
  
      com.android.version: 7.0
  
    Duration: 00:00:09.06, start: 0.000000, bitrate: 17349 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 17088 kb/s, SAR 1:1 DAR 16:9, 30.04 fps, 30 tbr, 90k tbn, 180k tbc (default)
  
      Metadata:
  
        rotate          : 90
  
        creation_time   : 2018-06-09T04:28:55.000000Z
  
        handler_name    : VideoHandle
  
      Side data:
  
        displaymatrix: rotation of -90.00 degrees
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 255 kb/s (default)
  
      Metadata:
  
        creation_time   : 2018-06-09T04:28:55.000000Z
  
        handler_name    : SoundHandle
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  Error reinitializing filters!
  
  Failed to inject frame into filter network: Out of memory
  
  Error while processing the decoded data for stream #0:0
  
  Conversion failed!

  =====================UPDATE===================

  I re-run the command with -v 9 -loglevel 99 and got paste the log file at :

  https://pastebin.com/ihawsPvZ

  If someone have real good expertise at ffmpeg i would apreciate very much the help

  =====================UPDATE 2=================

  I made more tests and the problem happens only when i record the video with my phone at vertical (other videos in vertical work and videos from my phone in horizontal also work)

  ==================UPDATE 3====================
  I detected the problem happens to ANY video with the

  Metadata:
  
        rotate          : 90 (or any value)

  It was suggested to use -noautorotate as workaround and it WORKDED, but this implies in tons of other complications ex :

  -if i decide to apply any filter to the video, it will be applied to the horizontal version but the video will be played at vertical producing a totally different effect

  ex : https://i.stack.imgur.com/R3jXJ.jpg (at this photo the drawtext filter should be placed at bottom line with horizontal text, but as ffmpeg can’t handle the orientation it is missplaced and rotated at runtime producing this vertical message)

  -I checked and if I set -metadata:s:v:0 rotate= while enconding it has no effect ex :

  ffmpeg -i input.mp4 -c copy -metadata:s:v:0 rotate= output.mp4
  will remove the rotate metadata and produce a non rotated video

  BUT
  ffmpeg -i input.mp4 -c:v libx264 -metadata:s:v:0 rotate= output.mp4
  will keep the metadata and the produced video will be played rotated (this behavior was also noticed on the official ffmpeg 4.0 binaries for windows available at ffmpeg website)

  I’M STILL LOOKING FOR A BETTER SOLUTION, THANKS FOR THE HELP

• ffmpeg for android, out of memory on encoding h264

  15 juin 2018, par Rafael Lima

  I’m getting an weird error when enconding a video with ffmpeg on android

  Failed to inject frame into filter network: Out of memory

  Althoug is a pretty objective error, I do believe this is some "generic message" for another problem, because the video I used for testing is 17MB and less than 11 seconds length and I’ve sucessfully tested with videos bigger than 200MB and longer than 5min

  This problem happens to any video vertical videos recorded on my phone (the videos were recorded and play fine on my phone but i cant reencode them... other video h264 were encoded fine on same phone)

  this is ffmpeg output

  ffmpeg version 4.0 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with Android (4691093 based on r316199) clang version 6.0.2 (https://android.googlesource.com/toolchain/clang 183abd29fc496f55536e7d904e0abae47888fc7f) (https://android.googlesource.com/toolchain/llvm 34361f192e41ed6e4e8f9aca80a4ea7e9856f327) (based on LLVM 6.0.2svn)
  
    configuration: --prefix=/home/rafa/Desktop/m4/build --target-os=android --arch=i686 --cpu=i686 --cross-prefix=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/i686-linux-android- --enable-cross-compile --cc=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang --cxx=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang++ --pkg-config=/usr/bin/pkg-config --pkg-config-flags=--static --enable-pic --enable-gpl --enable-nonfree --enable-static --disable-shared --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-doc --disable-devices --enable-libx264 --enable-libfdk-aac --enable-bsf=aac_adtstoasc --disable-asm
  
    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
  
    libswscale      5.  1.100 /  5.  1.100
  
    libswresample   3.  1.100 /  3.  1.100
  
    libpostproc    55.  1.100 / 55.  1.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/data/com.tomatedigital.toolsforinstagram/qqq.mp4':
  
    Metadata:  
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      creation_time   : 2018-06-09T04:28:55.000000Z
  
      location        : -08.0638-034.8723/
  
      location-eng    : -08.0638-034.8723/
  
      com.android.version: 7.0
  
    Duration: 00:00:09.06, start: 0.000000, bitrate: 17349 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 17088 kb/s, SAR 1:1 DAR 16:9, 30.04 fps, 30 tbr, 90k tbn, 180k tbc (default)
  
      Metadata:
  
        rotate          : 90
  
        creation_time   : 2018-06-09T04:28:55.000000Z
  
        handler_name    : VideoHandle
  
      Side data:
  
        displaymatrix: rotation of -90.00 degrees
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 255 kb/s (default)
  
      Metadata:
  
        creation_time   : 2018-06-09T04:28:55.000000Z
  
        handler_name    : SoundHandle
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  Error reinitializing filters!
  
  Failed to inject frame into filter network: Out of memory
  
  Error while processing the decoded data for stream #0:0
  
  Conversion failed!

  =====================UPDATE===================

  I re-run the command with -v 9 -loglevel 99 and got paste the log file at :

  https://pastebin.com/ihawsPvZ

  If someone have real good expertise at ffmpeg i would apreciate very much the help

  =====================UPDATE 2=================

  I made more tests and the problem happens only when i record the video with my phone at vertical (other videos in vertical work and videos from my phone in horizontal also work)

  ==================UPDATE 3====================
  I detected the problem happens to ANY video with the

  Metadata:
  
        rotate          : 90 (or any value)

  It was suggested to use -noautorotate as workaround and it WORKDED, but this implies in tons of other complications ex :

  -if i decide to apply any filter to the video, it will be applied to the horizontal version but the video will be played at vertical producing a totally different effect

  ex : https://i.stack.imgur.com/R3jXJ.jpg (at this photo the drawtext filter should be placed at bottom line with horizontal text, but as ffmpeg can’t handle the orientation it is missplaced and rotated at runtime producing this vertical message)

  -I checked and if I set -metadata:s:v:0 rotate= while enconding it has no effect ex :

  ffmpeg -i input.mp4 -c copy -metadata:s:v:0 rotate= output.mp4
  will remove the rotate metadata and produce a non rotated video

  BUT
  ffmpeg -i input.mp4 -c:v libx264 -metadata:s:v:0 rotate= output.mp4
  will keep the metadata and the produced video will be played rotated (this behavior was also noticed on the official ffmpeg 4.0 binaries for windows available at ffmpeg website)

  I’M STILL LOOKING FOR A BETTER SOLUTION, THANKS FOR THE HELP

• lavc/h263dsp : R-V V {h,v}_loop_filter

  19 mai 2024, par Rémi Denis-Courmont

  lavc/h263dsp : R-V V h,v_loop_filter
  Since the horizontal and vertical filters are identical except for a
  
  transposition, this uses a common subprocedure with an ad-hoc ABI.
  
  To preserve return-address stack prediction, a link register has to be
  
  used (c.f. the "Control Transfer Instructions" from the
  
  RISC-V ISA Manual). The alternate/temporary link register T0 is used
  
  here, so that the normal RA is preserved (something Arm cannot do !).
  To load the strength value based on `qscale`, the shortest possible
  
  and PIC-compatible sequence is used : AUIPC ; ADD ; LBU. The classic
  
  LLA ; ADD ; LBU sequence would add one more instruction since LLA is a
  
  convenience alias for AUIPC ; ADDI. To ensure that this trick works,
  
  relocation relaxation is disabled.
  To implement the two signed divisions by a power of two toward zero :
  
   (x / (1 << SHIFT))
  
  the code relies on the small range of integers involved, computing :
  
   (x + (x >> (16 - SHIFT))) >> SHIFT
  
  rather than the more general :
  
   (x + ((x >> (16 - 1)) & ((1 << SHIFT) - 1))) >> SHIFT
  
  Thus one ANDI instruction is avoided.
  T-Head C908 :
  
  h263dsp.h_loop_filter_c :       228.2
  
  h263dsp.h_loop_filter_rvv_i32 : 144.0
  
  h263dsp.v_loop_filter_c :       242.7
  
  h263dsp.v_loop_filter_rvv_i32 : 114.0
  
  (C is probably worse in real use due to less predictible branches.)
  

  • [DH] libavcodec/h263dsp.c
  • [DH] libavcodec/h263dsp.h
  • [DH] libavcodec/riscv/Makefile
  • [DH] libavcodec/riscv/h263dsp_init.c
  • [DH] libavcodec/riscv/h263dsp_rvv.S