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• ffprobe : report field order for video streams

  4 octobre 2016, par Rodger Combs

  ffprobe : report field order for video streams
  

  • [DH] doc/ffprobe.xsd
  • [DH] ffprobe.c
  • [DH] tests/ref/fate/concat-demuxer-extended-lavf-mxf
  • [DH] tests/ref/fate/concat-demuxer-extended-lavf-mxf_d10
  • [DH] tests/ref/fate/concat-demuxer-simple1-lavf-mxf
  • [DH] tests/ref/fate/concat-demuxer-simple1-lavf-mxf_d10
  • [DH] tests/ref/fate/concat-demuxer-simple2-lavf-ts
  • [DH] tests/ref/fate/ffprobe_compact
  • [DH] tests/ref/fate/ffprobe_csv
  • [DH] tests/ref/fate/ffprobe_default
  • [DH] tests/ref/fate/ffprobe_flat
  • [DH] tests/ref/fate/ffprobe_ini

• avformat/id3v2 : Don't reverse the order of id3v2 APICs

  13 avril 2021, par Andreas Rheinhardt

  avformat/id3v2 : Don't reverse the order of id3v2 APICs
  When parsing ID3v2 tags, special (non-text) metadata is not applied
  
  directly and unconditionally ; instead it is stored in a linked list
  
  in which elements are prepended. When traversing the list to add APICs
  
  (or private tags) at the end, the order is reversed. The same also
  
  happens for chapters and therefore the chapter parsing code already
  
  reverses the chapters.
  This commit changes this : By keeping pointers to both head and tail
  
  of the linked list one can preserve the order of the entries and
  
  remove the reordering code for chapters. Only the pointer to head
  
  will be exported : No current caller uses a nonempty list, so exporting
  
  both head and tail is unnecessary. This removes the functionality
  
  to combine the lists of special metadata read from different ID3v2 tags,
  
  but that doesn't make really much sense anyway (and would be trivial
  
  to implement if desired) and allows to remove the now unnecessary
  
  initializations performed by the callers.
  The FATE-reference for the id3v2-priv test had to be updated
  
  because the order of the tags read into the dict is reversed ;
  
  for id3v2-priv-remux only the md5 and not the ffprobe output
  
  of the remuxed file changes because the order of the private tags
  
  has up until now been reversed twice.
  The references for the aiff/mp3 cover-art tests needed to be updated,
  
  because the order of the attached pics is reversed upon reading.
  
  It is still not correct, because the muxers write the pics in the order
  
  in which they arrive at the muxer instead of the order given by
  
  pkt->stream_index.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavformat/aacdec.c
  • [DH] libavformat/aiffdec.c
  • [DH] libavformat/asf.c
  • [DH] libavformat/dsfdec.c
  • [DH] libavformat/id3v2.c
  • [DH] libavformat/id3v2.h
  • [DH] libavformat/iff.c
  • [DH] libavformat/omadec.c
  • [DH] libavformat/wavdec.c
  • [DH] tests/ref/fate/cover-art-aiff-id3v2-remux
  • [DH] tests/ref/fate/cover-art-mp3-id3v2-remux
  • [DH] tests/ref/fate/id3v2-priv
  • [DH] tests/ref/fate/id3v2-priv-remux

• How to install pytorch and opencv using a fixed conda channel order ?

  7 juin, par progquester

  Conda creates a pristine environment, configures a fixed channel order, and then starts installing pytorch torchvisioni pytorch-cuda and opencv, and it prompts for dependency conflicts. Do I have to install opencv via pip ?

  


  The same thing happens with python 3.10

  


  $ conda create -n my_env3.9 python=3.9
$ conda activate my_env3.9
$ conda install pytorch torchvision pytorch-cuda=11.8 opencv
Channels:
 - pytorch
 - nvidia
 - conda-forge
 - defaults
Platform: linux-64
Collecting package metadata (repodata.json): done
Solving environment: failed

LibMambaUnsatisfiableError: Encountered problems while solving:
  - nothing provides libopencv 4.2.0 py36_5 needed by opencv-4.2.0-py36_5

Could not solve for environment specs
The following packages are incompatible
├─ opencv =* * is installable with the potential options
│  ├─ opencv [4.10.0|4.11.0] would require
│  │  └─ libopencv [==4.10.0 headless_py310h05fcec3_10|==4.10.0 headless_py310h2251c23_11|...|==4.11.0 qt6_py39hd96f159_602], which requires
│  │     └─ ffmpeg >=7.1.0,<8.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv [4.10.0|4.9.0] would require
│  │  └─ libopencv [==4.10.0 headless_py310h3d4b477_1|==4.10.0 headless_py310hef7d0a5_0|...|==4.9.0 qt6_py39hed63795_614], which requires
│  │     └─ ffmpeg >=6.1.1,<7.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv 4.10.0 would require
│  │  └─ libopencv [==4.10.0 headless_py310h8d94708_2|==4.10.0 headless_py38h5642e36_2|...|==4.10.0 qt6_py39hfd9fb6d_602], which requires
│  │     └─ ffmpeg >=7.0.1,<8.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv 4.10.0 would require
│  │  └─ libopencv [==4.10.0 headless_py310h5bfabb9_4|==4.10.0 headless_py310h5bfabb9_5|...|==4.10.0 qt6_py39hdeb11db_605], which requires
│  │     └─ ffmpeg >=6.1.2,<7.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv 4.10.0 would require
│  │  └─ libopencv [==4.10.0 headless_py311h63eac36_5|==4.10.0 headless_py311h63eac36_6|...|==4.10.0 qt6_py39h5d2977a_603], which requires
│  │     └─ ffmpeg >=7.0.2,<8.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv 4.11.0 would require
│  │  └─ libopencv [==4.11.0 headless_py310h8ace835_4|==4.11.0 headless_py310h8ace835_5|...|==4.11.0 qt6_py39hbfaaa73_603], which requires
│  │     └─ ffmpeg >=7.1.1,<8.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv [4.5.3|4.5.5|4.6.0] would require
│  │  └─ libopencv [==4.5.3 py310hc72b5f5_8|==4.5.3 py38hc6b509d_8|...|==4.6.0 py39hf4bb9d8_2], which requires
│  │     └─ ffmpeg >=4.4.2,<5.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv [4.6.0|4.7.0] would require
│  │  └─ libopencv [==4.6.0 py310h5bd1119_9|==4.6.0 py310h6214075_5|...|==4.7.0 py39hf99ad11_5], which requires
│  │     └─ ffmpeg >=5.1.2,<6.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv [4.7.0|4.8.0|4.8.1] would require
│  │  └─ libopencv [==4.7.0 py310h245f934_4|==4.7.0 py310h3e876cf_5|...|==4.8.1 py39hf605482_5], which requires
│  │     └─ ffmpeg >=6.0.0,<7.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv 4.9.0 would require
│  │  └─ libopencv [==4.9.0 headless_py310hae237af_14|==4.9.0 headless_py38h0f7b093_14|...|==4.9.0 qt6_py39h067c833_615], which requires
│  │     └─ ffmpeg >=7.0.0,<8.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv [2.4.12|2.4.13|3.1.0|3.2.0] would require
│  │  └─ python =2.7 *, which can be installed;
│  ├─ opencv [2.4.13.4|3.2.0|3.3.0|3.4.1] would require
│  │  └─ ffmpeg >=3.2.3,<3.2.6 *, which conflicts with any installable versions previously reported;
│  ├─ opencv 3.1.0 would require
│  │  └─ python =3.4 *, which can be installed;
│  ├─ opencv [3.1.0|3.2.0] would require
│  │  └─ python =3.5 *, which can be installed;
│  ├─ opencv [3.1.0|3.2.0] would require
│  │  └─ python =3.6 *, which can be installed;
│  ├─ opencv [3.4.1|3.4.3|3.4.4|3.4.7] would require
│  │  ├─ ffmpeg >=4.0.2,<4.1.0a0 *, which conflicts with any installable versions previously reported;
│  │  └─ libopencv ==3.4.7 hc173e35_5, which requires
│  │     └─ ffmpeg >=4.0.2,<4.1.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv 3.4.1 would require
│  │  └─ ffmpeg >=4.0.1,<4.1.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv [3.4.4|3.4.7|...|4.1.1] would require
│  │  ├─ ffmpeg =4.1 *, which conflicts with any installable versions previously reported;
│  │  └─ libopencv [==3.4.7 h0cc45ee_4|==4.1.1 h0cc45ee_3], which requires
│  │     └─ ffmpeg =4.1 *, which conflicts with any installable versions previously reported;
│  ├─ opencv [3.4.7|3.4.8|...|4.2.0] would require
│  │  └─ libopencv [==3.4.7 h32d60f7_6|==3.4.7 py27_7|...|==4.2.0 py38_4], which requires
│  │     └─ ffmpeg >=4.1.3,<4.2.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv 4.2.0 would require
│  │  └─ libopencv ==4.2.0 py36_5, which does not exist (perhaps a missing channel);
│  ├─ opencv [4.2.0|4.3.0|4.4.0] would require
│  │  └─ py-opencv [==4.2.0 py36h0b673f9_6|==4.3.0 py36h0b673f9_2|==4.4.0 py36h0b673f9_2], which requires
│  │     └─ python >=3.6,<3.7.0a0 *, which can be installed;
│  ├─ opencv [4.2.0|4.3.0] would require
│  │  └─ libopencv [==4.2.0 py36_7|==4.2.0 py37_7|...|==4.3.0 py38_1], which requires
│  │     └─ ffmpeg >=4.2.3,<4.3.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv [4.2.0|4.3.0|4.4.0] would require
│  │  └─ py-opencv [==4.2.0 py37h43977f1_5|==4.2.0 py37h43977f1_6|==4.3.0 py37h43977f1_2|==4.4.0 py37h43977f1_2], which requires
│  │     └─ python >=3.7,<3.8.0a0 *, which can be installed;
│  ├─ opencv [4.2.0|4.3.0|4.4.0] would require
│  │  └─ py-opencv [==4.2.0 py38h23f93f0_5|==4.2.0 py38h23f93f0_6|==4.3.0 py38h23f93f0_2|==4.4.0 py38h23f93f0_2], which requires
│  │     └─ python >=3.8,<3.9.0a0 *, which can be installed;
│  ├─ opencv [4.4.0|4.5.0|4.5.1|4.5.2] would require
│  │  └─ libopencv [==4.4.0 py36_3|==4.4.0 py37_3|...|==4.5.2 py39h70bf20d_1], which requires
│  │     └─ ffmpeg >=4.3.1,<4.4.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv 4.5.0 would require
│  │  └─ libopencv ==4.5.0 py36_5, which does not exist (perhaps a missing channel);
│  ├─ opencv 4.5.0 would require
│  │  └─ libopencv ==4.5.0 py36_6, which does not exist (perhaps a missing channel);
│  ├─ opencv [4.5.3|4.5.5] would require
│  │  └─ libopencv [==4.5.3 py31hbd5a65a_6|==4.5.3 py31he7a5e20_7|...|==4.5.5 py39hfb30bf4_6], which requires
│  │     └─ ffmpeg >=4.3.2,<4.4.0a0 *, which conflicts with any installable versions previously reported;
│  ├─ opencv 4.5.5 would require
│  │  └─ libopencv [==4.5.5 py310h1897127_9|==4.5.5 py310hc83fb77_10|...|==4.5.5 py39he64e9e9_10], which requires
│  │     └─ ffmpeg >=4.4.1,<5.0a0 *, which conflicts with any installable versions previously reported;
│  └─ opencv [3.3.1|3.4.1|...|4.6.0] conflicts with any installable versions previously reported;
└─ pin on python 3.9.* =* * is not installable because it requires
   └─ python =3.9 *, which conflicts with any installable versions previously reported.

Pins seem to be involved in the conflict. Currently pinned specs:
 - python=3.9