AV_PIX_FMT_YUVA420P 1331 libavcodec/ffv1enc.c         AV_PIX_FMT_YUV420P,   AV_PIX_FMT_YUVA420P,  AV_PIX_FMT_YUVA422P,  AV_PIX_FMT_YUV444P,
AV_PIX_FMT_YUVA420P 1122 libavcodec/huffyuvenc.c         AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
AV_PIX_FMT_YUVA420P  773 libavcodec/libopenjpegenc.c         AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_YUVA420P 1763 libavcodec/libvpxenc.c     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_NONE },
AV_PIX_FMT_YUVA420P  107 libavcodec/libwebpenc.c         AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_YUVA420P  146 libavcodec/libwebpenc_animencoder.c         AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_YUVA420P  101 libavutil/pixfmt.h     AV_PIX_FMT_YUVA420P,  ///< planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)