Fail to parse sample.h264

Dear NVIDIA,
I’m working on deepstream-test1 for detecting car and person of sample_720p.h264, and I get the error below.
it could work weeks ago, can I download the h264 sample again?

Now playing: /home/dlinano/deepstream_sdk_v4.0.2_jetson/samples/streams/sample_720p.h264
Opening in BLOCKING MODE
Opening in BLOCKING MODE
Creating LL OSD context new
Running…
ERROR from element h264-parser: No valid frames found before end of stream
Error details: gstbaseparse.c(3603): gst_base_parse_loop (): /GstPipeline:dstest1-pipeline/GstH264Parse:h264-parser
Returned, stopping playback
Deleting pipeline
Please provide complete information as applicable to your setup.

• Hardware Platform (Jetson nano/ GPU)
• DeepStream Version 4.0.2
• JetPack Version (valid for Jetson only)
• TensorRT Version
• NVIDIA GPU Driver Version (valid for GPU only)

Hi,
Sorry for a late reply

it could work weeks ago, can I download the h264 sample again?
-> Can you change the source to see if works?

thank you for the reply!
i had change the source and it can work again,
but i’m still curious about why the original h264 sample will broke.

Hi @light87718
you could download the Jetson DS4.0.2 package from https://developer.nvidia.com/embedded/deepstream-on-jetson-downloads-archived and verify which files, including the h264 file, are broken/modified.