আমি গুণমানের মিশ্রণ মোডের সাথে দুটি ভিডিও মিশ্রিত করার চেষ্টা করছি। তবে ফলাফলের ভিডিওতে আমি একটি সবুজ ওভারলে পেয়েছি।
এটি এমন একটি চিত্র যেখানে প্রতিটি ইনপুট ভিডিওর একটি ফ্রেম এবং ফলাফলযুক্ত ভিডিও রচনাটির একটি ফ্রেম থাকে
আমি এই কমান্ড লাইনটি কার্যকর করি:
sudo ffmpeg -y -i video_top.avi -i video_background.mp4 -filter_complex "blend=all_mode=multiply" -f mp4 -vcodec libx264 out.mp4
এটি ffmpeg আউটপুট:
built on Mar 20 2014 14:51:45 with gcc 4.7 (Ubuntu/Linaro 4.7.2-2ubuntu1)
configuration: --enable-gpl --enable-libass --enable-libfaac --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libspeex --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree --enable-version3
libavutil 52. 67.100 / 52. 67.100
libavcodec 55. 52.102 / 55. 52.102
libavformat 55. 34.101 / 55. 34.101
libavdevice 55. 11.100 / 55. 11.100
libavfilter 4. 3.100 / 4. 3.100
libswscale 2. 5.102 / 2. 5.102
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, avi, from 'video_top.avi':
Metadata:
encoder : Lavf54.29.104
Duration: 00:00:10.72, start: 0.000000, bitrate: 688 kb/s
Stream #0:0: Video: h264 (High) (H264 / 0x34363248), yuv420p, 704x576 [SAR 1:1 DAR 11:9], 682 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'video_background.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42mp41
creation_time : 2014-04-29 12:51:17
Duration: 00:00:08.90, start: 0.033333, bitrate: 3417 kb/s
Stream #1:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv), 704x576 [SAR 1:1 DAR 11:9], 3408 kb/s, 30 fps, 30 tbr, 30k tbn, 60 tbc (default)
Metadata:
creation_time : 2014-04-29 12:51:17
handler_name : ?Mainconcept Video Media Handler
[libx264 @ 0x2e42660] using SAR=1/1
[libx264 @ 0x2e42660] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x2e42660] profile High, level 3.0
[libx264 @ 0x2e42660] 264 - core 142 r2 d6b4e63 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'out.mp4':
Metadata:
encoder : Lavf55.34.101
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 704x576 [SAR 1:1 DAR 11:9], q=-1--1, 12800 tbn, 25 tbc (default)
Stream mapping:
Stream #0:0 (h264) -> blend:top
Stream #1:0 (h264) -> blend:bottom
blend -> Stream #0:0 (libx264)
Press [q] to stop, [?] for help
frame= 268 fps=121 q=-1.0 Lsize= 732kB time=00:00:10.64 bitrate= 563.2kbits/s
video:728kB audio:0kB subtitle:0 data:0 global headers:0kB muxing overhead 0.539149%
[libx264 @ 0x2e42660] frame I:2 Avg QP:17.96 size: 35789
[libx264 @ 0x2e42660] frame P:77 Avg QP:21.68 size: 5552
[libx264 @ 0x2e42660] frame B:189 Avg QP:24.79 size: 1298
[libx264 @ 0x2e42660] consecutive B-frames: 1.1% 11.2% 10.1% 77.6%
[libx264 @ 0x2e42660] mb I I16..4: 30.7% 36.5% 32.7%
[libx264 @ 0x2e42660] mb P I16..4: 3.0% 2.6% 0.4% P16..4: 41.3% 14.4% 6.6% 0.0% 0.0% skip:31.7%
[libx264 @ 0x2e42660] mb B I16..4: 0.2% 0.1% 0.0% B16..8: 43.8% 2.8% 0.3% direct: 0.2% skip:52.5% L0:42.2% L1:56.1% BI: 1.7%
[libx264 @ 0x2e42660] 8x8 transform intra:40.7% inter:79.1%
[libx264 @ 0x2e42660] coded y,uvDC,uvAC intra: 48.9% 29.0% 8.3% inter: 7.1% 4.5% 0.1%
[libx264 @ 0x2e42660] i16 v,h,dc,p: 23% 19% 33% 26%
[libx264 @ 0x2e42660] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 15% 45% 3% 3% 3% 5% 3% 6%
[libx264 @ 0x2e42660] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 23% 19% 4% 3% 3% 7% 2% 7%
[libx264 @ 0x2e42660] i8c dc,h,v,p: 67% 15% 16% 1%
[libx264 @ 0x2e42660] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x2e42660] ref P L0: 67.4% 10.1% 17.0% 5.6%
[libx264 @ 0x2e42660] ref B L0: 91.6% 7.3% 1.1%
[libx264 @ 0x2e42660] ref B L1: 94.9% 5.1%
[libx264 @ 0x2e42660] kb/s:555.48
আমি জানি না কী ভুল, এবং অন্যদের মিশ্রণ মোডগুলি ব্যবহার করা অন্যকে হাস্যকর ফলাফল পেয়েছে, যেমন ভিডিওতে গোলাপী ওভারলে থাকার মতো।
পরামর্শ ভাল প্রশংসা করা হবে, অনেক অনেক ধন্যবাদ।