Can't read video encoded with AV1 codec

[rakhimovv]

Hello! Thank you for your work.

I met a problem with reading of certain encoding.
The video ffmpeg encoding information:

"vcodec": "libsvtav1",
"pix_fmt": "yuv420p",
"g": 2,
"crf": 30

The error:

[file @ 0x55fe07de3bc0] Setting default whitelist 'file,crypto'
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55fe07ff1180] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55fe07ff1180] ISO: File Type Major Brand: isom
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55fe07ff1180] Unknown dref type 0x206c7275 size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55fe07ff1180] Processing st: 0, edit list 0 - media time: 0, duration: 123909
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55fe07ff1180] Before avformat_find_stream_info() pos: 590687 bytes read:34268 seeks:1 nb_streams:1
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55fe07ff1180] All info found
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55fe07ff1180] After avformat_find_stream_info() pos: 16646 bytes read:67036 seeks:2 frames:1
[AVIOContext @ 0x55fe07d6c9c0] Statistics: 67036 bytes read, 2 seeks
Traceback (most recent call last):
  File "/home/jovyan/rakhimov/gigarobot/dec.py", line 10, in <module>
    vr = VideoReader(path, ctx=cpu(0))
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jovyan/micromamba/envs/side_pkg_rr/lib/python3.11/site-packages/decord/video_reader.py", line 54, in __init__
    self._handle = _CAPI_VideoReaderGetVideoReader(
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jovyan/micromamba/envs/side_pkg_rr/lib/python3.11/site-packages/decord/_ffi/_ctypes/function.py", line 173, in __call__
    check_call(_LIB.DECORDFuncCall(
  File "/home/jovyan/micromamba/envs/side_pkg_rr/lib/python3.11/site-packages/decord/_ffi/base.py", line 78, in check_call
    raise DECORDError(err_str)
decord._ffi.base.DECORDError: [11:30:13] /github/workspace/src/video/video_reader.cc:151: Check failed: st_nb >= 0 (-1128613112 vs. 0) ERROR cannot find video stream with wanted index: -1

Video is fine, I checked it visually and also via ffpmeg. Pyav is able to read it too. I guess the problem with the codec support.

The decord version is 0.6.0

installed with
pip install decord

[gcanat]

Meanwhile this library seems pretty much abandoned, you can try this one instead.