On Thu, 2022-01-27 at 11:04 +0800, zha...@bstar.com.cn wrote: > hello: > I want to splice four or more video into one video,i want to set the > background to a fixed size and the color is black, so i must scale the image > then overlay. > > My environment is ubuntu and I used command is: > > ffmpeg -i h1.mp4 -i h2.mp4 -i h3.mp4 -i h4.mp4 -filter_complex > "color=c=black:s=1920x1080[bg];[0:v]scale=iw/2:-1[img0];[1:v]scale=iw/2:- > 1[img1];[2:v] scale=iw/2:-1[img2];[3:v]scale=iw/2:- > 1[img3];[bg][img0]overlay=shortest=1[out0];[out0][img1]overlay=shortest=1:x=w[ > out1];[out1][img2]overlay=shortest=1:y=h[out2];[out2][img3]overlay=shortest=1: > x=w:y=h" -y out.mp4 > > ------------------------------------------------------------------------------ > ------------------------------------------------------------------------------ > ----- > the comman is correct,but when i change it to qsv. It's not working correctly: > > ./ffmpeg -hwaccel qsv -c:v h264_qsv -i h1.mp4 -hwaccel qsv -c:v h264_qsv > -i h2.mp4 -hwaccel qsv -c:v h264_qsv -i h3.mp4 -hwaccel qsv -c:v h264_qsv -i > h4.mp4 -filter_complex "color=black:r=30:size=1920x1080:sar=1/1, > hwupload=extra_hw_frames=64,format=qsv[bg];[0:v]scale_qsv=iw/2:ih/2[img0];[1:v > ]scale_qsv=iw/2:ih/2[img1];[2:v] > scale_qsv=iw/2:ih/2[img2];[3:v]scale_qsv=iw/2:ih/2[img3];[bg][img0]overlay_qsv > =shortest=1[out0];[out0][img1]overlay_qsv=shortest=1:x=w[out1];[out1][img2]ove > rlay_qsv=shortest=1:y=h[out2];[out2][img3]overlay_qsv=shortest=1:x=w:y=h" -y > out.mp4 > > output: > [hwupload @ 0x5593003e07c0] A hardware device reference is required to upload > frames to. > [Parsed_hwupload_1 @ 0x5593003e0680] Query format failed for > 'Parsed_hwupload_1': Invalid argument > Error reinitializing filters! > Failed to inject frame into filter network: Invalid argument > Error while processing the decoded data for stream #3:0 > Conversion failed! > ------------------------------------------------------------------------------ > ------------------------------------------------------------------------------ > ---- > ./ffmpeg -init_hw_device qsv=hw -filter_hw_device hw -hwaccel qsv -c:v > h264_qsv -i h1.mp4 -hwaccel qsv -c:v h264_qsv -i h2.mp4 -hwaccel qsv -c:v > h264_qsv -i h3.mp4 -hwaccel qsv -c:v h264_qsv -i h4.mp4 -filter_complex > "color=black:r=30:size=1920x1080:sar=1/1, > hwupload=extra_hw_frames=64,format=qsv[bg];[0:v]scale_qsv=iw/2:ih/2[img0];[1:v > ]scale_qsv=iw/2:ih/2[img1];[2:v] > scale_qsv=iw/2:ih/2[img2];[3:v]scale_qsv=iw/2:ih/2[img3];[bg][img0]overlay_qsv > =shortest=1[out0];[out0][img1]overlay_qsv=shortest=1:x=w[out1];[out1][img2]ove > rlay_qsv=shortest=1:y=h[out2];[out2][img3]overlay_qsv=shortest=1:x=w:y=h" -y > out.mp4 > > > output: > [Parsed_overlay_qsv_7 @ 0x563881a99180] Inputs with different underlying QSV > devices are forbidden. > [Parsed_overlay_qsv_7 @ 0x563881a99180] Failed to configure output pad on > Parsed_overlay_qsv_7 > Error reinitializing filters! > Failed to inject frame into filter network: Invalid argument > Error while processing the decoded data for stream #3:0 > Conversion failed! > ------------------------------------------------------------------------------ > ------------------------------------------------------------------------------ > ---- > I want to know How can I modify my command to run correctly. Thank you.
What is the version of your FFmpeg? Your command work for me with the latest FFmpeg (https://git.ffmpeg.org/gitweb/ffmpeg.git/shortlog/refs/heads/master). There is a green line at the bottom of each scaled image with your command, you may try vpp_qsv instead of scale_qsv. We will fix the green line issue in scale_qsv Thanks Haihao _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".