#11390: av1_nvenc output frames sometimes cannot be decoded
-----------------------------------+--------------------------------------
Reporter: nikomo | Type: defect
Status: new | Priority: normal
Component: ffmpeg | Version: git-master
Keywords: av1_nvenc | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-----------------------------------+--------------------------------------
Summary of the bug: av1_nvenc output with some inputs will occasionally
produce unplayable files. Attached files result in latest stable VLC
decoding blocks, but not any frames. Windows's built-in Media Player plays
back sample fine, but with full file as input, audio in output file will
not be played back in Media Player but video will, while VLC will play
audio but not video.
How to reproduce:
{{{
PS E:\encode_testing\av1_nvenc_bug> .\ffmpeg.exe -v 9 -loglevel 99 -i
.\test_input.mkv
ffmpeg version 2024-12-27-git-5f38c82536-essentials_build-www.gyan.dev
Copyright (c) 2000-2024 the FFmpeg developers
built with gcc 14.2.0 (Rev1, Built by MSYS2 project)
configuration: --enable-gpl --enable-version3 --enable-static --disable-
w32threads --disable-autodetect --enable-fontconfig --enable-iconv
--enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma
--enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-
avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265
--enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx
--enable-mediafoundation --enable-libass --enable-libfreetype --enable-
libfribidi --enable-libharfbuzz --enable-libvidstab --enable-libvmaf
--enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-
dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl
--enable-nvdec --enable-nvenc --enable-vaapi --enable-libgme --enable-
libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-
libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-
amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-
librubberband
libavutil 59. 53.100 / 59. 53.100
libavcodec 61. 28.100 / 61. 28.100
libavformat 61. 9.102 / 61. 9.102
libavdevice 61. 4.100 / 61. 4.100
libavfilter 10. 6.101 / 10. 6.101
libswscale 8. 13.100 / 8. 13.100
libswresample 5. 4.100 / 5. 4.100
libpostproc 58. 4.100 / 58. 4.100
Splitting the commandline.
Reading option '-v' ... matched as option 'v' (set logging level) with
argument '9'.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging
level) with argument '99'.
Reading option '-i' ... matched as input url with argument
'.\test_input.mkv'.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option v (set logging level) with argument 9.
Successfully parsed a group of options.
Parsing a group of options: input url .\test_input.mkv.
Successfully parsed a group of options.
Opening an input file: .\test_input.mkv.
[AVFormatContext @ 000001d618d5f100] Opening '.\test_input.mkv' for
reading
[file @ 000001d618d5f780] Setting default whitelist 'file,crypto,data'
Probing matroska,webm score:100 size:2048
[matroska,webm @ 000001d618d5f100] Format matroska,webm probed with
size=2048 and score=100
[matroska,webm @ 000001d618d5f100] Unknown entry 0x22B59D at pos. 4472
[matroska,webm @ 000001d618d5f100] Unknown entry 0x22B59D at pos. 4569
[matroska,webm @ 000001d618d5f100] Unknown entry 0x22B59D at pos. 6296
[matroska,webm @ 000001d618d5f100] Unknown entry 0x437D at pos. 7547
st:0 removing common factor 1000000 from timebase
st:1 removing common factor 1000000 from timebase
st:2 removing common factor 1000000 from timebase
[matroska,webm @ 000001d618d5f100] Before avformat_find_stream_info() pos:
7660 bytes read:33772 seeks:2 nb_streams:3
[h264 @ 000001d618d65a80] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 000001d618d65a80] Decoding VUI
[h264 @ 000001d618d65a80] nal_unit_type: 8(PPS), nal_ref_idc: 3
[matroska,webm @ 000001d618d5f100] parser not found for codec pcm_s24le,
packets or times may be invalid.
[h264 @ 000001d618d65a80] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 000001d618d65a80] Decoding VUI
[h264 @ 000001d618d65a80] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 000001d618d65a80] Decoding VUI
[h264 @ 000001d618d65a80] ct_type:1 pic_struct:0
[h264 @ 000001d618d65a80] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 000001d618d65a80] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 000001d618d65a80] nal_unit_type: 6(SEI), nal_ref_idc: 0
Last message repeated 2 times
[h264 @ 000001d618d65a80] nal_unit_type: 5(IDR), nal_ref_idc: 3
Last message repeated 3 times
[h264 @ 000001d618d65a80] Decoding VUI
[h264 @ 000001d618d65a80] Format yuv420p chosen by get_format().
[h264 @ 000001d618d65a80] Reinit context to 1920x1088, pix_fmt: yuv420p
[h264 @ 000001d618d65a80] ct_type:1 pic_struct:0
[h264 @ 000001d618d65a80] no picture
[matroska,webm @ 000001d618d5f100] parser not found for codec pcm_s24le,
packets or times may be invalid.
[h264 @ 000001d618d65a80] ct_type:1 pic_struct:0
Last message repeated 4 times
[matroska,webm @ 000001d618d5f100] All info found
[matroska,webm @ 000001d618d5f100] stream 0: start_time: 0 duration: NOPTS
[matroska,webm @ 000001d618d5f100] stream 1: start_time: 0 duration: NOPTS
[matroska,webm @ 000001d618d5f100] stream 2: start_time: 0 duration: 5.256
[matroska,webm @ 000001d618d5f100] format: start_time: 0 duration: 5.256
(estimate from stream) bitrate=31915 kb/s
[matroska,webm @ 000001d618d5f100] After avformat_find_stream_info() pos:
90112 bytes read:132076 seeks:2 frames:62
[aist#0:1/pcm_s24le @ 000001d618dbd8c0] Guessed Channel Layout: stereo
Input #0, matroska,webm, from '.\test_input.mkv':
Metadata:
creation_time : 2024-12-31T23:06:15.000000Z
ENCODER : Lavf61.9.102
Duration: 00:00:05.26, start: 0.000000, bitrate: 31915 kb/s
Chapters:
Chapter #0:0: start 0.033000, end 5.000000
Metadata:
title : Intro
Stream #0:0(jpn), 6, 1/1000: Video: h264 (High), 1 reference frame,
yuv420p(progressive, left), 1920x1080 [SAR 1:1 DAR 16:9], 0/1, 23.98 fps,
23.98 tbr, 1k tbn (default)
Metadata:
title : JPNBD
BPS : 29707337
DURATION : 00:00:05.256000000
NUMBER_OF_FRAMES: 124
NUMBER_OF_BYTES : 19517721
_STATISTICS_WRITING_APP: mkvmerge v88.0 ('All I Know') 64-bit
_STATISTICS_WRITING_DATE_UTC: 2024-12-31 23:06:15
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Stream #0:1(jpn), 56, 1/1000: Audio: pcm_s24le, 48000 Hz, stereo, s32
(24 bit), 2304 kb/s (default)
Metadata:
title : PCM 2.0
BPS : 2304000
DURATION : 00:00:05.000000000
NUMBER_OF_FRAMES: 1000
NUMBER_OF_BYTES : 1440000
_STATISTICS_WRITING_APP: mkvmerge v88.0 ('All I Know') 64-bit
_STATISTICS_WRITING_DATE_UTC: 2024-12-31 23:06:15
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Stream #0:2(eng), 0, 1/1000: Subtitle: ass (ssa) (default)
Metadata:
title : Subtitles
BPS : 0
DURATION : 00:00:00.000000000
NUMBER_OF_FRAMES: 0
NUMBER_OF_BYTES : 0
_STATISTICS_WRITING_APP: mkvmerge v88.0 ('All I Know') 64-bit
_STATISTICS_WRITING_DATE_UTC: 2024-12-31 23:06:15
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Successfully opened the file.
At least one output file must be specified
[AVIOContext @ 000001d618d5fbc0] Statistics: 132076 bytes read, 2 seeks
}}}
{{{
@echo off
.\ffmpeg.exe -y -report -i test_input.mkv -c:v h264_nvenc
debug_h264_nvenc.mkv
.\ffmpeg.exe -y -report -i test_input.mkv -c:v hevc_nvenc
debug_hevc_nvenc.mkv
.\ffmpeg.exe -y -report -i test_input.mkv -c:v libsvtav1
debug_libsvtav1.mkv
.\ffmpeg.exe -y -report -i test_input.mkv -c:v av1_nvenc
debug_av1_nvenc.mkv
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11390>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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