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• Revert "avformat/rtp : Pass sources and block filter addresses via sdp file for rtp"

  5 avril 2020, par Carl Eugen Hoyos

  Revert "avformat/rtp : Pass sources and block filter addresses via sdp file for rtp"
  This reverts commit b71685865fe761925feedda3cd0b288224d9a509.
  The commit lead to the use of an uninitialized variable.
  
  Other issues were listed by Andreas Rheinhardt :
  
  https://ffmpeg.org/pipermail/ffmpeg-devel/2020-March/259150.html
  

  • [DH] libavformat/rtsp.c

• What is the difference between "location" and "location-eng" metadata of a MP4 file ?

  10 décembre 2020, par Weihang Jian

  I am trying to retrieve GPS information from media files using ffprobe, for example :

  


  $ ffprobe -v quiet -show_format sample.mp4
[FORMAT]
filename=sample.mp4
nb_streams=2
nb_programs=0
format_name=mov,mp4,m4a,3gp,3g2,mj2
format_long_name=QuickTime / MOV
start_time=0.000000
duration=4.293000
size=11888152
bit_rate=22153556
probe_score=100
TAG:major_brand=mp42
TAG:minor_version=0
TAG:compatible_brands=isommp42
TAG:creation_time=2020-09-20T11:33:49.000000Z
TAG:location=+25.0731+121.3663/
TAG:location-eng=+25.0731+121.3663/
TAG:com.android.version=10
TAG:com.android.manufacturer=Google
TAG:com.android.model=Pixel
[/FORMAT]


  


  We can see that there are 2 tags that look like ISO6709 representations, location and location-eng.

  


  And here are my questions :

  


  

  1. What is the difference between location and location-eng ? It looks like they are always the same. Why do we need 2 different keys with same the value ?

  


  2. Are location and location-eng really in ISO6709 representations ? Is there any specification or standard I can refer to ?

  


  


  I would really appreciate your help.

  


• can i speedup text watermarking on ffmpeg ?

  3 juin 2020, par Easy Tricks For Android

  This command i used ffmpeg -i "1.mp4" -vf "drawtext=text='watermak_name':x=w-tw-50:y=h-th-50:fontfile=/Windows/fonts/calibri.ttf:fontsize=20:fontcolor=white:shadowcolor=black:shadowx=2:shadowy=2" "output.mp4". watermark is working with this command, but it takes more time up-to 3 hours +

  



  this is the log i got from cmd

  

  

D :>ffmpeg -i "1.mp4" -vf "drawtext=text='watermak_name':x=w-tw-50:y=h/2-th:fontfile=/Windows/fonts/
  courbd.ttf:fontsize=20:fontcolor=white" -max_muxing_queue_size 9999 "1_out.mp4"
  


  
ffmpeg version git-2020-05-23-26b4509 Copyright (c) 2000-2020 the FFmpeg developers
  
 built with gcc 9.3.1 (GCC) 20200523
  
 configuration : —enable-gpl —enable-version3 —enable-sdl2 —enable-fontconfig —enable-gnutls —enable-iconv
  —enable-libass —enable-libdav1d —enable-libbluray —enable-libfreetype —enable-libmp3lame
  —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-libshine
  —enable-libsnappy —enable-libsoxr —enable-libsrt —enable-libtheora —enable-libtwolame —enable-libvpx
  —enable-libwavpack —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxml2 —enable-libzimg
  —enable-lzma —enable-zlib —enable-gmp —enable-libvidstab —enable-libvmaf —enable-libvorbis
  —enable-libvo-amrwbenc —enable-libmysofa —enable-libspeex —enable-libxvid —enable-libaom
  —disable-w32threads —enable-libmfx —enable-ffnvcodec —enable-cuda-llvm —enable-cuvid —enable-d3d11va
  —enable-nvenc —enable-nvdec —enable-dxva2 —enable-avisynth —enable-libopenmpt —enable-amf
  
 libavutil 56. 48.100 / 56. 48.100
  
 libavcodec 58. 87.101 / 58. 87.101
  
 libavformat 58. 43.100 / 58. 43.100
  
 libavdevice 58. 9.103 / 58. 9.103
  
 libavfilter 7. 83.100 / 7. 83.100
  
 libswscale 5. 6.101 / 5. 6.101
  
 libswresample 3. 6.100 / 3. 6.100
  
 libpostproc 55. 6.100 / 55. 6.100
  
Truncating packet of size 95 to 83
  
Input #0, matroska,webm, from 'Uriyadi.mkv' :
  
 Metadata :
  
 title : Downloaded From ABCD
  
 encoder : Downloaded From ABCD
  
 creation_time : 2020-05-22T16:44:46.000000Z
  
 Duration : 02:11:50.86, start : 0.000000, bitrate : 750 kb/s
  
 Stream #0:0(mal) : Video : h264 (High), yuv420p(progressive), 720x304 [SAR 1:1 DAR 45:19], 25 fps, 25 tbr, 1k
  tbn, 50 tbc (default)
  
 Metadata :
  
 title : Downloaded From ABCD
  
 Stream #0:1(mal) : Audio : mp3, 48000 Hz, stereo, fltp, 65 kb/s (default)
  
 Metadata :
  
 title : Downloaded From ABCD
  
Stream mapping :
  
 Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
 Stream #0:1 -> #0:1 (mp3 (mp3float) -> vorbis (libvorbis))
  
Press [q] to stop, [?] for help
  
Fontconfig error : Cannot load default config file
  
[Parsed_drawtext_0 @ 000001a470fe3f00] Using "C :/Windows/fonts/mingliub.ttc"
  
[libx264 @ 000001a470a10600] using SAR=1/1
  
[libx264 @ 000001a470a10600] using cpu capabilities : MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
[libx264 @ 000001a470a10600] profile High, level 3.0, 4:2:0, 8-bit
  
[libx264 @ 000001a470a10600] 264 - core 159 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 -
  http://www.videolan.org/x264.html - options : 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=9 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
  
Output #0, matroska, to '1_out.mp4' :
  
 Metadata :
  
 title : Downloaded From ABCD
  
 encoder : Lavf58.43.100
  
 Stream #0:0(mal) : Video : h264 (libx264) (H264 / 0x34363248), yuv420p, 720x304 [SAR 1:1 DAR 45:19], q=-1—1,
  25 fps, 1k tbn, 25 tbc (default)
  
 Metadata :
  
 title : Downloaded From ABCD
  
 encoder : Lavc58.87.101 libx264
  
 Side data :
  
 cpb : bitrate max/min/avg : 0/0/0 buffer size : 0 vbv_delay : N/A
  
 Stream #0:1(mal) : Audio : vorbis (libvorbis) (oV[0][0] / 0x566F), 48000 Hz, stereo, fltp (default)
  
 Metadata :
  
 title : Downloaded From ABCD
  
 encoder : Lavc58.87.101 libvorbis
  
frame=35791 fps=308 q=28.0 size= 107264kB time=00:23:52.10 bitrate= 613.6kbits/s speed=12.3x