ffmpeg和libx264视频无法在视频播放器上播放

Question

几个月来，我在结合使用FFmpeg和视频代码h264时遇到问题。视频生成工作正常，没有任何错误。自2015年以来，我一直在使用以下脚本从单张图片中构建视频：

#!/bin/bash                                                                     
# ------------------------------------------------------------------------------
#                                                                               
# Video generator                                                               
# Tobias Holzmann                                                               
# Date: 18.03.15                                                                
# Update: 24.12.2019                                                            
# Switch back to ffmpeg from avconv                                             
#                                                                               
# ------------------------------------------------------------------------------

frameRate=30                                                                    
vcodec="h264"                                                                   
crf=18              # Between 0-51; 23 is default. 0 = lossless                 


# ------------------------------------------------------------------------------

ffmpeg \                                                                        
    -f image2 \                                                                 
    -r $frameRate \                                                             
    -i animation.%4d.png \                                                      
    -r $frameRate \                                                             
    -crf $crf \                                                                 
    -vcodec $vcodec \                                                           
    AVideo.flv                                                                  


# ------------------------------------------------------------------------------

今天，我使它变得更花哨且更易于使用。但是，问题是，我使用h264生成的所有视频都根本无法使用vlc播放器或通用Ubuntu视频播放器播放。我收到如下错误：

shorty@animation: vlc AVideo.flv 
VLC media player 3.0.8 Vetinari (revision 3.0.8-0-gf350b6b5a7)
[000055c0e70af420] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
[NULL @ 0x7fe318c2c2a0] Invalid NAL unit size (30490 > 15039).
[NULL @ 0x7fe318c2c2a0] missing picture in access unit with size 15733
[h264 @ 0x7fe318c2c2a0] Invalid NAL unit size (30490 > 15039).
[h264 @ 0x7fe318c2c2a0] Error splitting the input into NAL units.
[00007fe324c1c420] avcodec decoder: Using NVIDIA VDPAU Driver Shared Library  430.50  Thu Sep  5 22:38:52 CDT 2019 for hardware decoding
[h264 @ 0x7fe325428ac0] hardware accelerator failed to decode picture
[h264 @ 0x7fe324c1fb00] hardware accelerator failed to decode picture
[h264 @ 0x7fe324eb9d80] hardware accelerator failed to decode picture
[h264 @ 0x7fe324ed6080] hardware accelerator failed to decode picture
[h264 @ 0x7fe324ef2400] hardware accelerator failed to decode picture
[h264 @ 0x7fe324f0e780] hardware accelerator failed to decode picture
[h264 @ 0x7fe325428ac0] hardware accelerator failed to decode picture
[h264 @ 0x7fe324c1fb00] hardware accelerator failed to decode picture
[h264 @ 0x7fe324eb9d80] hardware accelerator failed to decode picture
[h264 @ 0x7fe324ed6080] hardware accelerator failed to decode picture
[h264 @ 0x7fe324ef2400] hardware accelerator failed to decode picture
[00007fe324c1c420] main decoder error: buffer deadlock prevented
[h264 @ 0x7fe324f0e780] hardware accelerator failed to decode picture
...
...

我想知道是否有人知道问题所在。任何提示或反馈表示赞赏。预先感谢您，托比。