# 离线 4K 至 1080p – 同时旋转（90/180/270）和缩小

Source: [https://docs.qualcomm.com/doc/80-70014-50Y/topic/offline-4k-to-1080p-rotate-90-180-270-and-downscale-at-same-time.html](https://docs.qualcomm.com/doc/80-70014-50Y/topic/offline-4k-to-1080p-rotate-90-180-270-and-downscale-at-same-time.html)

此 pipeline 显示来自文件源的 4k 分辨率的视频流，该视频流被缩小到 1080p 并旋转 180 度，然后显示在本地显示设备上。

Note: 要以不同的角度旋转视频，请参阅 [qtivtransform](https://docs.qualcomm.com/doc/80-70014-50Y/topic/qtivtransform.html) 中的 rotate 属性。

运行命令以执行 pipeline：
- Qualcomm Computer Vision SDK（fcv）引擎：

        gst-launch-1.0 -e filesrc location=/opt/<4K_H264/AVC_file>.mp4 ! qtdemux ! queue ! h264parse ! v4l2h264dec capture-io-mode=5 output-io-mode=5 ! qtivtransform engine=fcv rotate=180 ! video/x-raw\(memory:GBM\),format=NV12,width=1920,height=1080 ! waylandsink fullscreen=trueCopy to clipboard
- GLES 引擎：

        gst-launch-1.0 -e filesrc location=/opt/<4K_H264/AVC_file>.mp4 ! qtdemux ! queue ! h264parse ! v4l2h264dec capture-io-mode=5 output-io-mode=5 ! qtivtransform engine=gles rotate=180 ! video/x-raw\(memory:GBM\),format=NV12,width=1920,height=1080 ! waylandsink fullscreen=trueCopy to clipboard

显示来自文件源的转换流。

如需停止用例，请按下 CTRL + C。

下图显示了 pipeline 执行流程：

![](data:image/png;base64,UklGRowXAABXRUJQVlA4TIAXAAAvzoMTEOpQ3DaSkvRf9jHDKyIIJmnogdq+4JdhLxkDVOkgWmUtte62lWiVjSl1LpYMGx1nucXKSast5exgRdp2V5KcgQ3lNX5SrGDCggkTJkxYSNGwYMOCCRs2bNiwYcOCDRs2bNiw5It1TOW9596s/DN7Zq68y5glyLuU99IOXEOxfwOyaNwKZgeJCh1tIuVQbWCw8KDcgLzJTSjCe9MruOgIli6stTRKOTa8eW9B3tVGxsmNhTJ3FbkGee/NBsZ7xzuEC8nVChRxZHlNR+QGOho21xrsuIKKZlrAeJO1gFnCkUO5g2Hydg/jT4S8F24kbxIr4srxJHJj8EQOrD3IoEZyibUA3wAGte1xrA+Ds+9LMPhjsFgsFoPBYPDHYrE4OFgsBovFweLd7+wTGxgAAEW29OPiv+8Lw3AwDMNwMRwcDAcXw8XFxTBcXAzDd9/vpaaNJAfvVQfiA+FcnSVBkiS3TbWEEMAjhjULnQsY/vpN/8+SJfn/3FzxfhFbHHHEFUccccURR2yxxRZbPOKIK64Ndel7701c2o2EtKY8GDcKglXbj4G3NwlHX0PKm4TSy4+Gd3pTtNpQfgThzEDpAe1GEvB25ugJ6UYTkCYtBOVGQtAmHUg3moC9mNCmJOvFEpC7n09a1Bw3EtKpdqMISJdYCAATKByGYdgTwvAwPAzDMAzDYTgMw2E4PAzDe8bx//vvyI0kRfIyDcT2beABxxy/xFzTjzbn5HPOOX0fxnEu99pjTV5y7vnXrWP/AwX/APM3jvOur97ctf0zqi8azgcNHwvGcTAzefLovmiM1QnPB8ZxZHzy5Ezj+aDhvNHwt2EUh4uMkuP9bS18jAJSCcpKSMWQSgg+TlXMwsdRtzAUxjgicqYcVMEKgpUowxS1KEtgTRVw1rRdWQwzKmEchZRSIOtmDIMVlBt+NlCqEizmX0JZAmdcCI6yMR4Ei0GJ/zImYVzgqFM2op0MD8nyGSwzjqM/FkZ0s87h7SSJoumZhofJ8ssXOpePI2MYzxVeWMilBOLIU5bEUtN2ZJjKxpEZkTAuSkPrUX/reBKlWgNvqg3wpD4kiCIbKJgv1aoJLNbfOK2N8WD5GtNyk5SukoJL/ktXE/Bn1iESccy7GlQFVUqYmE5PHViwpER/btU6hMmKN9FyEuWwJlpsyHHgIDMiQRxUdiYG2MtirsOjQeuYWJUGOJKubyJMBZidevChZ5Yazgt4rUekEqUEMnQGlp3KjiKxY7rOE4G+zKi1jkj6UmMO3KljL9F4P5DD6sighKG5YzomsSyzPTXGkbnKrx3TTHYUTZwoO3oSjfeLMrIgryg40ulvWj1x8Yhai0Tys24leLSyipQXMSyRa6ULkqN0Otsxs2llx2xcSERWFh09pTJj3YrFsHqUio/sZjW5tS9ikN0CzM5fyTmGJeXSAId2ywhMFS5yyIhuEpcXqbiV9NlfD66CLInuIIPK4NQdaxUrlU5TSW9usVhjPNjRmIRxURq/Wxxl7vJHPL2aQKvplIYeB79+xNMr9SESXIvLr1WctdtaJcWKJ9GKzv3S3z7EsFyIWHobiYjOKkd8O7V8SghZSNfkrRKS6X1Fp4nOWj+4iKmitFzPbSqG5V1aT72WKYV0etOHfGaxVRwpnZapGaGJI5z2dLujWCma8i+L7bbYbGMSLlL7LtaezWTbF0tcZFSf9Xy2M5PZcep40bS41iMI7NaayiQ7duuUn+0QycUCzEyUvXMO3h1lcK/VoPx7NxeZWGVWcfwjpvZ82znks5+NxT7bkQtuHr+pCvM2i12+WOyorIK46a9F8hW9JmL8Wi4ptJqGJN2MoxzZZV2xCW2Zz+SEKH2mWLwICs6Of97Bb89uOC9gEN54rpbvLRYDzG6TFWWc/RlMrXKI4FwWunKCL/yEQQ8cU2yhjR/GEIUUiAI5L4umIGfB0SUIB3dJKRrjgUBUHvoRLItxPDXyCOgmsH5GgqUoKko3jCPwAOlNBNhBHvX9MMYVnxoYY6oDMxUW1GUypihafWCmoizFM0XJbnZ3q/xEiKUoOQA50wnjwoEdCeStyY4JXU+CQ/GTkMD9mCIEP0zxqUH9BUldi9ZXKXUtpE8uJnxLcCbcOZEQAemN/UtEgCN93ByzQ+vB0LoHOUPq3iEpGG8MHzysGb0ZtJ0bwvnhlWHhhrAFXSWDsL504eh+4S/ALT0YwXQzdYjKD+zBl8WbQ/ohOnlD2KZu2JZApotyqdc1AFXCqBIW4MwJ4EutbWB8eHNcpWqhuKAtCzlzQqp1joNAFih7XEIB7ee+bqW0wvrSxcVfPKTNCQW0pR+vgjcH4kdu87JvLQs+LhinvV+izOB8fna65hQCaEe3cQkQYJYSnOkBR38Udd7ziE4Nqv6oAMeHxJegv4CAYaLXM2A1WKCAU4uqGkGNtQDhTRUvooMp4PhReCUZfAjUQLF0Q68iPmQUcGZ4Fl4vFFD+xaeRDxMKPjU4uGqAWQkhMbD0quAcTCHHI4IBzrujbuo88ww60+hxUYENneJPEBDKid4VZwC2AwxvpngxAuwn38Qq4PAS8WEGuJ1N3A8QS0+heeCBCWBHdrQHwVONTtTEjwwgPiIn/czMqLiyEJa3QAfSZsN5cfJhOflbzFx4j0+R6PlEhjOG88opaIIxFi1hjEVVGGNREtbNoi6MsegGwIfZgsEzi3HkzQo8wxgiDxmApSktR3qWMUQMBVh+Hx5PNniqMbw5ciXhHWgAzxCGZVQRrr0EHmap4GlCiYDgpypBGAn3pVo1nBeELDcLVCUpe3IAXFNWSUrUCSw1yYiy2SIsTGkuI3hCYARLQpb1k1E2j7JY6DFkywgeCYBuohT6gYVEzfL5BIjgMQHSUZTYXGSUPdLCwP2SUvb0bO+26C/hLf0WRBD4JIU72bV2RIkhQRzLAAhPTvgjWtcqSGnqAYQAWBjKiEBZRisEyhb+UYAnAYFE1IekeBGU+v7erRSSCQGLhR6YDRazKXwCLGd9eBD8JAeVwSop09T5924gAIFA1UWE9L5CgOYBROQhsR2FbAb0dwxgBbAIBSxZCXha7qhdR9Xd6ev2yzcTvwpv90gpVYwbxTNRwuNCxZ+QEV3imGGO0+YmqZpAy/CQiK4QoIpMmhS0QJ/Zd/Dn7lIeSkie0jzJk176O8sxwx/nflVSWCy2jePLNA9GmmTw6/TXORIArL6u79L1nYET+PX6YCHLwDOk5T+TJIvoTRezHTBpdStp4qwdzasQF6qXmwf64nkbK/oi/qq+ZcJX5bwQDc4rtbY79D7ZAlSRtX0ZhxXdtx4R78IbXAUQupn87PRNhxwGOLxN9p5C9Q02+pUfPnNtZZfGTaLEPYLcvgzcHRIhKYcjOZoMLDoSSkddi3/plh2dgRUjQxr9edL4B9KDpQdnIs04LdQSrKMM5pfVdmEJQGDRP3zz6WwH/jdHZdu2rfjuz7ZtqihCWUKIeKg1wKOu+4U5E2LT+6HRt9j46+hHaYBufXY7I/qB+rn9m0uDwgi1CaG2TamttkX14UHgScET7xf+dG3qWrzrJxrrV97q1sKiOjgfsSeCy4st+HvLGbtvBBsPZyTqrlskWqxk2TbBDqkES5saFJ4F8ufGvlASW276uL70rAFMvET8mFFiA6ll25SU+e3P9pf3VuXN8GVanqqzKLX9YZ7tzoh6Odt61+0M9TRIpMUBqJRFwjMgm0Lo5lvT444iGk/ftNY7XnJeTsayFQmeKo3KLn3sJ1srxxbxcbaynxmty0ksDUdyLC1e0QKlo3Mu3jV1NOY3hhsOCUoa/YS9llLqx3v8i5AekAmI+snopcHYqaXFwWtPRDYFQCbqop1ULcYC6TMzRDVk4CKmaePqwMFFl5xoaFQrq8ZY+7aEOx3T+/oOevpndZNBxwY/WfPJAwb2Vd5awjjyglTcsVBxFiqyHkh55R1hnBPoo1oLsZbwZ99XPLZv3LgeNwk+RDqIzp75W5DeOurr4u/nM1KlBWF5jzUIzsWsBhL17ZY5EM6FDn0UFC3Ug+zBZxDdqicGJQFmm07v2/ugyvhONUB6rAi8Btg2haVwd1auhj4v7DDPhjQ66qeCb5ez3SXNBUOijg230W5FljFNGVnGOrBIfBZCN2utM7Fp2C3zOp92yGTgohB0115P1qmxA7L1X65b1+X+Ldoh8kja1ew9EjjGLPlPVzl8FyIHlLu4zqeReZEzL7IHqWMSA5Hiph/q6ycaB33WbzQ3UBPklrqJcNQwRVFO342KoO7qtOvtsI0rss4NYUOkAmNSU86YBqj5Leh1/B8NWIykw+OoBQBwpq3HAmf4LmEywCiHpOm4ad5b37Dk7tLZNCR8Gt0wkw1zkjs+/aBlWloD7HkXTCcZuHtse253tmnH6lCy9NpWhyMrI+g+llEpD5GMyF8IQa7gl0b5wj6kn/77jtnwJxNg9qGjiHuvuF/bGRbVQ3tkF3ssADIKUjXrZP9GEVxGQSIk7XFrvAiGRY3DtWGOnVhZ4kK9r3uRPfjFE7EEJKL96f1E45Jr5YYce4QVoNw44qbu395B7xs9R5CRb9TQrtn34T7Z9sn+hSII82yUN9ttW2Iuo0g66OQ5ajy1CJuLyWT4u1kfksq1n17r0CE3/BRxBehtsz1/ZC9Nm/u9jc7YR0ld3OhQnOqxSYarQYS2ZBd8EP4uYVuj6+vG6fIQNV5Exdaxds3M6RyZGrIHvH3HhvNCCUIa40H7h7bZrXfkaRYoyXeJ1E0uZINW+tiws3GqiXvVeJfqz315vGyiX+q+vTcNTYRqt2Om4PWabU0OxuONYYfGiqLWzbChTcMPEN7uTjS2ON5shhuLocmTVilv7evhh1A3QahYh8inhrfJmHclwhyZq9Q69O2UOUHnAgjlQnxkJxwL+25stW87HG+6/LeXR//Rv4tb9AWQa9XmYGQgeMi3+1vLEeGPOaFnrRHdRDi/upQeTC6Y3FBGk6mxLb2XCerd332DcGosMlNNY8X322p3QHX9orJxNa/39iaH7MFfkQgk5uxNA8wK6BDP7w2iuaRQKrXr8sb2oVSUUW68YMYJJhVl5Ex9CxalfyuPqHfcNyjKLW5OO1UelIqkOiYVjjWRLinD3822Wutc59txp76NliYBdMuW0bv/mTMdzzBK6xr9ryaQjCi8zqnzHKNGhZtaDFLtja3eW2guRVLyd8H8PZIcmMnxWOSYHJDgvooN5wWBEOK0fnatgsbDgJSMrfnm6MZUu7FS97YzJQn4lDupeWxXg7G+8CJu+CCtGAw/Fhrjl+JCeGzPVdV6vEnkMG8EguhI8zvDD9fJMTVjnsoyVHbn+tEoIgIa+sN4eIOZ+pBkpMBe3WzanCCccEiQ7YBUm7+6Ph73hXdtRa5Fcm3lbxZQ92cJ2SP8jIc9mMuhLMub6+K8Ii8VgW9iIYqYKH+e7z0Go8SBAennym7X++K4OcQkQrM/eIwW6sWQPb0TyuYazguyTH4ioLDjMoiE4WRymqOxCYJenXEhG82zQRGI8mu39xgbha0jCCd+bdbHtLAmJyLQelj4uxlfflSfSSH/okHXuL5PXtDpDY1Si+a9k7qXjMKbitSwXhvDw6HqR8mdlLthQ1dBmJhIPdeMCWKnFbGTIHaaefomxEWygFLriTI6R+FUBpYIvV0nnw5US51sqZZahPX6dWH9TvVO2pIBOWm7Uu6YEmbG9WQCmr99O5GVB8JpSWLcVDu1svXQDHY/x4lANANhH/BSICZCwRGwmQMOJRBvO1bU0zQp16qZDU1F5Qvo81aJ+GNjCZ7i7d1ClhH1ghTPDOkIJOQAZNv4ebovPiab80ze8uN5rHfHTRIDVHqMmjoqpqmeODy1u6+wfyksafGdiWS3uRBmbT42Kt4rClde0Ey14DJ9CwQpA7JtaBeyqWIiGE683U5T7ZSZiEBQzb93gxh2muim7vvTmY5bGlPds20TIc2dFbF9PEUND4miUVqwdTBfFSsZViYA8XYGiR0X3gd2fBhgOqoFULyTcVw28btkV7smASyPp7EfU+vTMDGj/ZrTJO3xFfS11Au1vq6qmaImMjFeiG0kVbMtZjYH7fxtX3RQMx4G4OZoy6nn6Rl1MtkU+uRS5KwcArgr/+6KHQ5N5Z5P6vzJuraG7ry5jxana83LVjkTb1OEp3hvNM4Z00uywBd+hQhx4dSh5N1UJ22Nh9cv1fHA2yB0c9oc3pNKHLhrP6+Xn9WjAGFJ8/zeGSUft9U7PU2sDe9CqeriPSJClCzwhUdE8MWkkoVs57bGY8nzm7LalkqEgFvJVRSoBWxyKeeK46zJoFwrd72lpMRR6l7Lb2uifx8wvFB9Wm6q5IaH0wIWcFO8QRkEa/L/naWK5nYzJ4RXp6dSN+PImDa2ue5s0WplGNkiEf3w7VH1o7TbRmHUWl9amhobG/f3fWvDJaI5qPndoqLG5nx3IJtZQrXB+nvEoUmlx0mmMuH25AjyMpURB093aHPFM7BlWsqT6NpzdWn2+9aKuEnlJeYXYsZsyBmsziY5Nfl6S7YJlEGeK96tF7ZF8mt+9Wm/T48VDk1aaiKisQQ4mDLdcRGbdNe8qN7EgINMJcOFegEfBQxLWrPRgOpPnoio15L38env+49yn+7VsJ1Z8/Rv6Tzbu/tkq0tBtrySzXGlzjItHcyndMqh0c10zBUH6uT3URvRWAzxSROsDSeKi8D+qiiXV2sp1fsXM3s+7dM0sZAGUUXyqtTAhhUNB4T5++zFw4DSUU0+ZOJ4VYn9HkVo0nO7FaTbgagutS1fr8vGvj1xcnuN0etUNtaVaXrU4srj945gPqWa8guxNbVA/L1bcaosVBZo1U0vgYBPThFyhAz4lCPRyD6SKyPuOnYSoutA5Ll6iQR60oLwpQC0gtAKqJxWttIVAbfwDB7JBYoL2HDUuZsmtyLsHKcMADYWVsnWOUUkuklzLvgGQOgpR1qqB8/WkVyAGglmF7RIG452IRQqLqBazoa0Ws5WWZGRch3nQJVznDKqnFNkRcCRXBnx+u+7FwK1VRyJOBcZYGe5EgR26jhfKS6osivgzikCq4AwnziRUrAwDhQHUByyZ+ZILuAcgHMg7GprOfRunxNVFolPOedY8RWhRcI85xyJu0kR2EpYJLAbsBWAfhwI8pZtU8WaRckzLWzbpqqZLPnIJm/ZH6NLPWeS5pQFi2ptJ5UUkdi2pW9iChARHl/Rx2yqKsuy1SVQlb18hEFEsDwDQh8pFG1W3tIoRlVTBPAhI+r395lEUmHlCf0iT1lS7SSUoAaIgDwk85ED+dUTrXw7CFvRX42GksafyotKk3qXgUCeUtVanjyDkFhCpJOnlH7wz9TSmlCYz2ttJ5WUj0Dy+qeNAmTCdRAsS8c0WJW9iIL4UpUKllvp16YeedpDMiL4AEDTu6lFGk2kfpE6qBSiVcED348cNDwAiDooovmgIEJDiVWQHGk809jzlIOURu/TJgDAH2ynHAQAIQw8obxIAQQLYc6CYlnRmw9Z9ofbWVAyK6pDGfyp6qRGC9VPCAwfPjxxcaP8HGV13pu58IonnpT66fpnGs4nBD6F1dgUbuBQXhDPggG/FlBQAL8WUIB4iaxJ4QYaC52uBfQDHsH8KGbAzbRLLQ2Hm/mRzYCsxw0G6tJePRhMg+znaR6JnggOr0JTIGtKeBYE1KW9LjptBvT4UXgG3oKUQeGCBVvU4foprVUlpaoFcEsFcFwL6REFMBfe7FYAtJ195hwItQ4BYtO7gfZzZDUps2HBZX0T7QZa05FuBVaBQ8GXWa6BtI8isC31NpwXQPFE10KA7SgV03vhzQzjbduAThLMPx/2zw22gZ0MMjDj58HA/WyQgnZZ7KkscEtxKJYYlpLbKBIploDsKMB357ZMokmSLriQsCPgDCQJXc+/oAC/jVL5DmlTtLTEUMhIiOCQmvovjARH+gD/f9/gDEYiQk+09RMtNXGAfqJqUyPKEQHDOApSpjCOY6YmL7D5rbZUxjhOqm2Bza9jj1+Xa/tXx9n9c23/GcfZ+AvHGr88)

**Parent Topic:** [转换和转码用例](https://docs.qualcomm.com/doc/80-70014-50Y/topic/transform-and-transcode-use-cases.html)

Last Published: Nov 11, 2025

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