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• How to to burn subtitles based image on video using 'overlay_cuda', ffmpeg video filter

  4 septembre 2020, par jgkim0518

  I have to burn subtitles based image on video using ffmpeg(v4.3) and cuda, hardware accelerator. I want to use 'overlay_cuda' in filter complex.

  


  It is my command.

  


  ./ffmpeg -init_hw_device cuda=cuda:1 -hwaccel cuda -filter_hw_device cuda -hwaccel_output_format cuda -i 2_dump.ts -filter_complex "[v:0]scale_npp=1920:1080,format=yuv420p[base_video];[base_video][s:3]overlay_cuda[resurlt_video]" -map "[resurlt_video]" -map 0:a -c:v h264_nvenc -f mpegts subtitle_test.ts


  


  But it's fail.

  


  These are output massage included error.

  


  ffmpeg version 4.3 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-39)
configuration: --prefix=/usr/local --pkg-config-flags=--static --extra-cflags=-I/usr/local/include --extra-ldflags='-L/usr/local/lib -L/usr/local/lib64' --extra-libs='-lm -lpthread -lc' --bindir=/usr/local/bin --enable-cross-compile --enable-pic --enable-gpl --enable-libfdk_aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree --enable-cuda-nvcc --enable-cuvid --enable-nvenc --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64 --enable-libass --enable-static --disable-shared
libavutil      56. 51.100 / 56. 51.100
libavcodec     58. 91.100 / 58. 91.100
libavformat    58. 45.100 / 58. 45.100
libavdevice    58. 10.100 / 58. 10.100
libavfilter     7. 85.100 /  7. 85.100
libswscale      5.  7.100 /  5.  7.100
libswresample   3.  7.100 /  3.  7.100
libpostproc    55.  7.100 / 55.  7.100
[mpegts @ 0x4971500] start time for stream 5 is not set in estimate_timings_from_pts
[mpegts @ 0x4971500] start time for stream 6 is not set in estimate_timings_from_pts
[mpegts @ 0x4971500] start time for stream 7 is not set in estimate_timings_from_pts
[mpegts @ 0x4971500] start time for stream 8 is not set in estimate_timings_from_pts
[mpegts @ 0x4971500] start time for stream 9 is not set in estimate_timings_from_pts
[mpegts @ 0x4971500] start time for stream 10 is not set in estimate_timings_from_pts
[mpegts @ 0x4971500] start time for stream 11 is not set in estimate_timings_from_pts
[mpegts @ 0x4971500] start time for stream 12 is not set in estimate_timings_from_pts
Input #0, mpegts, from '2_dump.ts':
Duration: 00:05:09.80, start: 1.400000, bitrate: 12595 kb/s
Program 1 
Metadata:
  service_name    : Service01
  service_provider: AMUZLAB
Stream #0:0[0x100](eng): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 5.1(side), fltp, 384 kb/s
Stream #0:1[0x101](ind): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, stereo, fltp, 192 kb/s
Stream #0:2[0x102](zho): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, stereo, fltp, 192 kb/s
Stream #0:3[0x103](kho): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, stereo, fltp, 192 kb/s
Stream #0:4[0x104]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 50 tbr, 90k tbn, 50 tbc
Stream #0:5[0x105](CHI): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:6[0x106](CHS): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:7[0x107](IND): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:8[0x108](THA): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:9[0x109](MAN): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:10[0x10a](MON): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:11[0x10b](BUR): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:12[0x10c](ENG): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
File 'subtitle_test.ts' already exists. Overwrite? [y/N] y
Stream mapping:
Stream #0:4 (h264) -> scale_npp (graph 0)
Stream #0:8 (dvbsub) -> overlay_cuda:overlay (graph 0)
overlay_cuda (graph 0) -> Stream #0:0 (h264_nvenc)
Stream #0:0 -> #0:1 (ac3 (native) -> mp2 (native))
Stream #0:1 -> #0:2 (ac3 (native) -> mp2 (native))
Stream #0:2 -> #0:3 (ac3 (native) -> mp2 (native))
Stream #0:3 -> #0:4 (ac3 (native) -> mp2 (native))
Press [q] to stop, [?] for help
[mpegts @ 0x4971500] sub2video: using 1920x1080 canvas
Impossible to convert between the formats supported by the filter 'Parsed_scale_npp_0' and the filter 'auto_scaler_0'
Error reinitializing filters!
Failed to inject frame into filter network: Function not implemented
Error while processing the decoded data for stream #0:4
Conversion failed!


  


  And, It is command line succeeded used 'overlay', software video filter, non_hardware accelerator.

  


  ./ffmpeg -hwaccel cuda -re -i 2_dump.ts -filter_complex "[0:v:0][0:s:3]overlay[v]" -map "[v]" -map 0:a -c:v h264_nvenc -f mpegts subtitle_test.ts


  


  How to to burn subtitles based image on video using ffmpeg(v4.3) and cuda, hardware accelerator ?

  


  Thank you.

  


• Using ffmpeg results in undesirable motion blur

  13 septembre 2020, par Oleg Yablokov

  I am trying to convert a video with the best quality possible. The problem is, no matter which command arguments I use, a motion blur appears (the first image is converted, the second is the original) :

  


  

  


  The ffprobe's output of the original video :

  


  ffmpeg version 4.2.2-1ubuntu1 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9 (Ubuntu 9.3.0-3ubuntu1)
configuration: --prefix=/usr --extra-version=1ubuntu1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
libavutil      56. 31.100 / 56. 31.100
libavcodec     58. 54.100 / 58. 54.100
libavformat    58. 29.100 / 58. 29.100
libavdevice    58.  8.100 / 58.  8.100
libavfilter     7. 57.100 /  7. 57.100
libavresample   4.  0.  0 /  4.  0.  0
libswscale      5.  5.100 /  5.  5.100
libswresample   3.  5.100 /  3.  5.100
libpostproc    55.  5.100 / 55.  5.100
Input #0, mpegts, from 'input.ts':
Duration: 00:00:30.24, start: 1.400000, bitrate: 26265 kb/s
Program 1
    Metadata:
    service_name    : Service01
    service_provider: FFmpeg
    Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:1[0x101](ita): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 5.1(side), fltp, 448 kb/s (clean effects)


  


  I've tried different combinations of the following arguments :

  


  ffmpeg \
-i input.ts \
-c:v libx264 \
-preset veryslow \
-qp 0 \
-minrate 25165824 \
-b:v 25165824 \
-r 25 \
-s 1920x1080 \
-aspect 16:9 \
-g 25 \
-crf 7 \
output.ts


  


  None of these settings helped. Please, could you tell me how to remove this motion blur ?

  


  EDIT : to be more specific, I leave a link to a shorten video ( 10 seconds). If you manage to convert it to hls (h.264 & .m3u8) without motion blur and with preserving the overall quality, it will be equivalent to the answer.

  


• ffmpeg : avcodec_open2 returns invalid argument

  26 octobre 2020, par roari

  I'm reusing the sample code from the developer 64-bit release of FFmpeg in my application to encode a video :

  


  AVCodec* pCodec_{nullptr};
AVCodecContext* pContext_{nullptr};

avcodec_register_all();
pCodec_ = avcodec_find_encoder(AV_CODEC_ID_MPEG2VIDEO);
if (!pCodec_) {}

pContext_ = avcodec_alloc_context3(pCodec_);
if (!pContext_) {}

pContext_->bit_rate = 400000;
pContext_->width = size.width();
pContext_->height = size.height();

pContext_->time_base.den = 1;
pContext_->time_base.num = fps;

pContext_->gop_size = 10;
pContext_->max_b_frames = 1;
pContext_->pix_fmt = AV_PIX_FMT_BGR0;

if (codec_id == AV_CODEC_ID_H264) {
    av_opt_set(pContext_->priv_data, "preset", "slow", 0);
}

int err = avcodec_open2(pContext_, pCodec_, nullptr);
if (err < 0) {}


  


  AVCodec* and AVCodecContext* look like they are allocated correctly. avcodec_open2 then returns invalid argument (-22).

  


  I use : Windows 10 64, VS2013 Compiler, Qt Creator IDE, ffmpeg(2016-05-12) 64bit.

  


  The sample I took the code from is decoding_encoding.c.

  


  Any ideas ?