Last frames are dropped while decoding with qsv decoder
|Reported by:||Giribabu||Owned by:|
|Blocking:||Reproduced by developer:||no|
|Analyzed by developer:||no|
Summary of the bug:
I tried to install MSS SDK on HSW system , right now i can able to triggered HW accelerators (h264_qsv decoder),
I am trying to compare decoding outputs with qsv decoder and without qsv decoder those two outputs are not matched..
commands used are as follows..
1) with qsv : ./ffmpeg -vcodec h264_qsv -r 30 -i input.264 -pix_fmt yuv420p output_qsv.yuv
2) with out qsv : ./ffmpeg -i input.264 output_x264.yuv ( default decoder )
these 2 outputs are output_qsv.yuv and output_x264.yuv files are not matched..
I think that qsv decoding with different frame rate, that why i am using command by putting " -r 30 " before i/p read,now getting 0th frames twice while decoding with qsv ..but CPU utilization is very good while decoding..
I think that both decoders (with and with out qsv options....) should match right..?
ffmpeg version -- ffmpeg-3.0.1 downloaded from https://www.ffmpeg.org/download.html
This is a latest one build from source repo only..
I have faced few issues like:
i) most of the sequences getting " 0 " th frame twice while decoding with h264_qsv decoder,
ii) Last 4 to 5 frames is not dumped in to output file,
iii) few frames are also dropped into output file,
iv) as per my observation those 4 frames are appended with N-15 frames in the output file, where N is the no of frames in a sequence
but few frames are dropped..
please give reply as soon as possible, please let me know any information needed..
Thanks & Regards,
L V GiriBabu..
Change History (7)
comment:1 by , 8 years ago
|Analyzed by developer:||unset|
|Component:||ffmpeg → undetermined|
|Priority:||important → normal|
|Reproduced by developer:||unset|
|Version:||2.8.3 → unspecified|