PyNvVideoCodec_2.0.0 ThreadedDecoder ffmpeg general error after switching to a new video source

Gaming and Visualization Technologies Video Processing & Optical Flow
1

ffmpeg error occurs when I re-initialize the PyNvVideoCodec_2.0.0 ThreadedDecoder with a new video source, by using
reconfigure_decoder.

import PyNvVideoCodec as nvc

decoder = nvc.ThreadedDecoder(
    video_path,
    buffer_size=32,
    use_device_memory=True,
    max_width=3840,
    max_height=2160,
    output_color_type=nvc.OutputColorType.RGB,
)

for _ in range(64):
    frames = decoder.get_batch_frames(16)

decoder.reconfigure_decoder(another_video_path)

for _ in range(64):
    # error occurs here
    frames = decoder.get_batch_frames(16)

[ERROR][07:15:23] General error -1094995529 at line 739 in file .../PyNvVideoCodec_2.0.0/src/VideoCodecSDKUtils/helper_classes/Utils/FFmpegDemuxer.h

Error code 1094995529 means INDA which means invalid data (ref). However it’s certainly not a problem of the video file itself, because it always happen even if I change the order of videos. Whether I decode video A first and then B or decode B and then A, the same error occurs after switching to the new source.

I also confirmed Invalid NAL unit size warning shows up when I set the log level to TRACE.

[h264 @ 0x2cb5e080] Invalid NAL unit size (-1009653786 > 2889).
[h264 @ 0x2cb5e080] missing picture in access unit with size 2893

cuda info:

+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 565.57.01              Driver Version: 565.57.01      CUDA Version: 12.7     |
|-----------------------------------------+------------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id          Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |           Memory-Usage | GPU-Util  Compute M. |
|                                         |                        |               MIG M. |
|=========================================+========================+======================|
|   0  NVIDIA L40S                    On  |   00000002:00:01.0 Off |                    0 |
| N/A   16C    P8             31W /  350W |       1MiB /  46068MiB |      0%      Default |
|                                         |                        |                  N/A |
+-----------------------------------------+------------------------+----------------------+