FLAG_B_PICTURES (reference) in projects: third_party

238     .flags                 = FLAG_B_PICTURES |

1131                              FLAG_B_PICTURES |

2018     } else if (!(ctx->codec->flags & FLAG_B_PICTURES) ||  in vaapi_encode_init_gop_structure()

/third_party/ffmpeg/libavcodec/
D	vaapi_encode.h	`373 FLAG_B_PICTURES = 1 << 3, enumerator`
D	vaapi_encode_vp9.c	`238 .flags = FLAG_B_PICTURES \|`
D	vaapi_encode_mpeg2.c	`569 .flags = FLAG_B_PICTURES,`
D	vaapi_encode_h264.c	`1131 FLAG_B_PICTURES \|`
D	vaapi_encode_h265.c	`1289 FLAG_B_PICTURES \|`
D	vaapi_encode.c	`2018 } else if (!(ctx->codec->flags & FLAG_B_PICTURES) \|\| in vaapi_encode_init_gop_structure()`