安裝ffmpeg

將webm的文件轉(zhuǎn)成mp4.

ffmpeg -i videoplayback.webm? videoplay1.mp4

ffmpeg version N-104496-g44c65c6cc0-tessus? https://evermeet.cx/ffmpeg/? Copyright (c) 2000-2021 the FFmpeg developers

? built with Apple clang version 11.0.0 (clang-1100.0.33.17)

? configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdAV1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnAppy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay

? libavutil? ? ? 57.? 7.100 / 57.? 7.100

? libavcodec? ? ?59. 12.100 / 59. 12.100

? libavformat? ? 59.? 8.100 / 59.? 8.100

? libavdevice? ? 59.? 0.101 / 59.? 0.101

? libavfilter? ? ?8. 16.101 /? 8. 16.101

? libswscale? ? ? 6.? 1.100 /? 6.? 1.100

? libswresample? ?4.? 0.100 /? 4.? 0.100

? libpostproc? ? 56.? 0.100 / 56.? 0.100

Input #0, matroska,webm, from 'videoplayback.webm':

? Metadata:

? ? encoder? ? ? ? ?: google/video-file

? Duration: 00:00:44.97, start: 0.000000, bitrate: 1661 kb/s

? Stream #0:0(eng): Video: vp9 (Profile 0), yuv420p(tv, bt709), 1920x1080, SAR 1:1 DAR 16:9, 60 fps, 60 tbr, 1k tbn (default)

Stream mApping:

? Stream #0:0 -> #0:0 (vp9 (native) -> h264 (libx264))

Press [q] to stop, [?] for help

[libx264 @ 0x7ff3b6c02d40] using SAR=1/1

[libx264 @ 0x7ff3b6c02d40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2

[libx264 @ 0x7ff3b6c02d40] profile High, level 4.2, 4:2:0, 8-bit

[libx264 @ 0x7ff3b6c02d40] 264 - core 164 r3075 66a5bc1 - H.264/MPEG-4 AVC codec - Copyleft 2003-2021 - 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=6 lookahead_threads=1 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 'videoplay1.mp4':

? Metadata:

? ? encoder? ? ? ? ?: Lavf59.8.100

? Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 60 fps, 15360 tbn (default)

? ? Metadata:

? ? ? encoder? ? ? ? ?: Lavc59.12.100 libx264

? ? Side data:

? ? ? cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A

frame=? ? 1 fps=0.0 q=0.0 size=? ? ? ?0kB time=00:00:00.00 bitrate=N/A speed=? ?frame=? ?47 fps=0.0 q=0.0 size=? ? ? ?0kB time=00:00:00.00 bitrate=N/A speed=? ?frame=? ?66 fps= 47 q=31.0 size=? ? ? ?0kB time=00:00:00.21 bitrate=? ?1.8kbits/frame=? ?82 fps= 42 q=31.0 size=? ? ?256kB time=00:00:00.48 bitrate=4339.1kbits/frame=? 135 fps= 55 q=31.0 size=? ? ?256kB time=00:00:01.36 bitrate=1534.7kbits/frame=? 185 fps= 63 q=31.0 size=? ? ?256kB time=00:00:02.20 bitrate= 953.4kbits/frame=? 224 fps= 64 q=31.0 size=? ? ?256kB time=00:00:02.85 bitrate= 736.0kbits/frame=? 254 fps= 63 q=31.0 size=? ? ?256kB time=00:00:03.35 bitrate= 626.1kbits/frame=? 274 fps= 60 q=31.0 size=? ? ?256kB time=00:00:03.68 bitrate= 569.5kbits/frame=? 297 fps= 58 q=31.0 size=? ? ?256kB time=00:00:04.06 bitrate= 515.8kbits/frame=? 310 fps= 55 q=31.0 size=? ? ?512kB time=00:00:04.28 bitrate= 979.3kbits/frame=? 332 fps= 53 q=31.0 size=? ? ?512kB time=00:00:04.65 bitrate= 902.1kbits/frame=? 349 fps= 52 q=31.0 size=? ? ?512kB time=00:00:04.93 bitrate= 850.3kbits/frame=? 366 fps= 50 q=31.0 size=? ? ?768kB time=00:00:05.21 bitrate=1206.1kbits/frame=? 384 fps= 49 q=31.0 size=? ? ?768kB time=00:00:05.51 bitrate=1140.5kbits/frame=? 401 fps= 48 q=31.0 size=? ? ?768kB time=00:00:05.80 bitrate=1084.8kbits/frame=? 416 fps= 46 q=31.0 size=? ? ?768kB time=00:00:06.05 bitrate=1040.0kbits/frame=? 431 fps= 46 q=31.0 size=? ? 1024kB time=00:00:06.30 bitrate=1331.6kbits/frame=? 449 fps= 45 q=31.0 size=? ? 1024kB time=00:00:06.60 bitrate=1271.0kbits/frame=? 468 fps= 44 q=31.0 size=? ? 1280kB time=00:00:06.91 bitrate=1516.1kbits/frame=? 485 fps= 43 q=31.0 size=? ? 1280kB time=00:00:07.20 bitrate=1456.4kbits/frame=? 503 fps= 43 q=31.0 size=? ? 1280kB time=00:00:07.50 bitrate=1398.1kbits/frame=? 522 fps= 42 q=31.0 size=? ? 1536kB time=00:00:07.81 bitrate=1609.8kbits/frame=? 541 fps= 42 q=31.0 size=? ? 1536kB time=00:00:08.13 bitrate=1547.1kbits/frame=? 558 fps= 41 q=31.0 size=? ? 1536kB time=00:00:08.41 bitrate=1495.0kbits/frame=? 576 fps= 41 q=31.0 size=? ? 1792kB time=00:00:08.71 bitrate=1684.2kbits/frame=? 595 fps= 41 q=31.0 size=? ? 1792kB time=00:00:09.03 bitrate=1625.1kbits/frame=? 613 fps= 40 q=31.0 size=? ? 2048kB time=00:00:09.33 bitrate=1797.6kbits/frame=? 630 fps= 40 q=31.0 size=? ? 2048kB time=00:00:09.61 bitrate=1744.6kbits/frame=? 651 fps= 40 q=31.0 size=? ? 2048kB time=00:00:09.96 bitrate=1683.4kbits/frame=? 671 fps= 40 q=31.0 size=? ? 2304kB time=00:00:10.30 bitrate=1832.5kbits/frame=? 689 fps= 40 q=31.0 size=? ? 2304kB time=00:00:10.60 bitrate=1780.6kbits/frame=? 710 fps= 40 q=31.0 size=? ? 2304kB time=00:00:10.95 bitrate=1723.7kbits/frame=? 728 fps= 40 q=31.0 size=? ? 2304kB time=00:00:11.25 bitrate=1677.7kbits/frame=? 747 fps= 39 q=31.0 size=? ? 2560kB time=00:00:11.56 bitrate=1813.1kbits/frame=? 765 fps= 39 q=31.0 size=? ? 2560kB time=00:00:11.86 bitrate=1767.3kbits/frame=? 783 fps= 39 q=31.0 size=? ? 2816kB time=00:00:12.16 bitrate=1896.1kbits/frame=? 801 fps= 39 q=31.0 size=? ? 2816kB time=00:00:12.46 bitrate=1850.4kbits/frame=? 820 fps= 39 q=31.0 size=? ? 2816kB time=00:00:12.78 bitrate=1804.6kbits/frame=? 834 fps= 39 q=31.0 size=? ? 3072kB time=00:00:13.01 bitrate=1933.4kbits/frame=? 853 fps= 39 q=31.0 size=? ? 3072kB time=00:00:13.33 bitrate=1887.5kbits/frame=? 871 fps= 38 q=31.0 size=? ? 3072kB time=00:00:13.63 bitrate=1845.9kbits/frame=? 887 fps= 38 q=31.0 size=? ? 3328kB time=00:00:13.90 bitrate=1961.4kbits/frame=? 905 fps= 38 q=31.0 size=? ? 3328kB time=00:00:14.20 bitrate=1919.9kbits/frame=? 924 fps= 38 q=31.0 size=? ? 3584kB time=00:00:14.51 bitrate=2022.5kbits/frame=? 945 fps= 38 q=31.0 size=? ? 3584kB time=00:00:14.86 bitrate=1974.9kbits/frame=? 966 fps= 38 q=31.0 size=? ? 3584kB time=00:00:15.21 bitrate=1929.5kbits/frame=? 986 fps= 38 q=31.0 size=? ? 3840kB time=00:00:15.55 bitrate=2023.0kbits/frame= 1007 fps= 38 q=31.0 size=? ? 3840kB time=00:00:15.90 bitrate=1978.5kbits/frame= 1026 fps= 38 q=31.0 size=? ? 3840kB time=00:00:16.21 bitrate=1939.8kbits/frame= 1039 fps= 37 q=31.0 size=? ? 3840kB time=00:00:16.43 bitrate=1914.3kbits/frame= 1061 fps= 38 q=31.0 size=? ? 4096kB time=00:00:16.80 bitrate=1997.3kbits/frame= 1081 fps= 38 q=31.0 size=? ? 4096kB time=00:00:17.13 bitrate=1958.4kbits/frame= 1102 fps= 38 q=31.0 size=? ? 4352kB time=00:00:17.48 bitrate=2039.2kbits/frame= 1122 fps= 38 q=31.0 size=? ? 4352kB time=00:00:17.81 bitrate=2001.0kbits/frame= 1140 fps= 38 q=31.0 size=? ? 4352kB time=00:00:18.11 bitrate=1967.9kbits/frame= 1160 fps= 38 q=31.0 size=? ? 4352kB time=00:00:18.45 bitrate=1932.3kbits/frame= 1178 fps= 37 q=31.0 size=? ? 4608kB time=00:00:18.75 bitrate=2013.3kbits/frame= 1197 fps= 37 q=31.0 size=? ? 4608kB time=00:00:19.06 bitrate=1979.8kbits/frame= 1218 fps= 37 q=31.0 size=? ? 4608kB time=00:00:19.41 bitrate=1944.2kbits/frame= 1237 fps= 37 q=31.0 size=? ? 4864kB time=00:00:19.73 bitrate=2019.2kbits/frame= 1257 fps= 37 q=31.0 size=? ? 4864kB time=00:00:20.06 bitrate=1985.7kbits/frame= 1278 fps= 38 q=31.0 size=? ? 4864kB time=00:00:20.41 bitrate=1951.6kbits/frame= 1295 fps= 37 q=31.0 size=? ? 5120kB time=00:00:20.70 bitrate=2026.2kbits/frame= 1318 fps= 37 q=31.0 size=? ? 5120kB time=00:00:21.08 bitrate=1989.4kbits/frame= 1339 fps= 38 q=31.0 size=? ? 5120kB time=00:00:21.43 bitrate=1956.9kbits/frame= 1358 fps= 38 q=31.0 size=? ? 5376kB time=00:00:21.75 bitrate=2024.8kbits/frame= 1379 fps= 38 q=31.0 size=? ? 5376kB time=00:00:22.10 bitrate=1992.8kbits/frame= 1399 fps= 38 q=31.0 size=? ? 5376kB time=00:00:22.43 bitrate=1963.2kbits/frame= 1421 fps= 38 q=31.0 size=? ? 5632kB time=00:00:22.80 bitrate=2023.6kbits/frame= 1440 fps= 38 q=31.0 size=? ? 5632kB time=00:00:23.11 bitrate=1995.9kbits/frame= 1464 fps= 38 q=31.0 size=? ? 5632kB time=00:00:23.51 bitrate=1961.9kbits/frame= 1483 fps= 38 q=31.0 size=? ? 5632kB time=00:00:23.83 bitrate=1935.8kbits/frame= 1503 fps= 38 q=31.0 size=? ? 5888kB time=00:00:24.16 bitrate=1995.9kbits/frame= 1523 fps= 38 q=31.0 size=? ? 5888kB time=00:00:24.50 bitrate=1968.8kbits/frame= 1542 fps= 38 q=31.0 size=? ? 5888kB time=00:00:24.81 bitrate=1943.6kbits/frame= 1561 fps= 38 q=31.0 size=? ? 6144kB time=00:00:25.13 bitrate=2002.6kbits/frame= 1582 fps= 38 q=31.0 size=? ? 6144kB time=00:00:25.48 bitrate=1975.1kbits/frame= 1605 fps= 38 q=31.0 size=? ? 6144kB time=00:00:25.86 bitrate=1945.8kbits/frame= 1624 fps= 38 q=31.0 size=? ? 6144kB time=00:00:26.18 bitrate=1922.3kbits/frame= 1646 fps= 38 q=31.0 size=? ? 6400kB time=00:00:26.55 bitrate=1974.7kbits/frame= 1667 fps= 38 q=31.0 size=? ? 6400kB time=00:00:26.90 bitrate=1949.0kbits/frame= 1689 fps= 38 q=31.0 size=? ? 6400kB time=00:00:27.26 bitrate=1922.8kbits/frame= 1708 fps= 38 q=31.0 size=? ? 6400kB time=00:00:27.58 bitrate=1900.8kbits/frame= 1729 fps= 38 q=31.0 size=? ? 6656kB time=00:00:27.93 bitrate=1952.0kbits/frame= 1750 fps= 38 q=31.0 size=? ? 6656kB time=00:00:28.28 bitrate=1927.9kbits/frame= 1773 fps= 38 q=31.0 size=? ? 6656kB time=00:00:28.66 bitrate=1902.1kbits/frame= 1793 fps= 38 q=31.0 size=? ? 6912kB time=00:00:29.00 bitrate=1952.5kbits/frame= 1814 fps= 38 q=31.0 size=? ? 6912kB time=00:00:29.35 bitrate=1929.2kbits/frame= 1834 fps= 38 q=31.0 size=? ? 6912kB time=00:00:29.68 bitrate=1907.6kbits/frame= 1854 fps= 38 q=31.0 size=? ? 6912kB time=00:00:30.01 bitrate=1886.4kbits/frame= 1872 fps= 38 q=31.0 size=? ? 7168kB time=00:00:30.31 bitrate=1936.9kbits/frame= 1891 fps= 38 q=31.0 size=? ? 7168kB time=00:00:30.63 bitrate=1916.9kbits/frame= 1909 fps= 38 q=31.0 size=? ? 7168kB time=00:00:30.93 bitrate=1898.3kbits/frame= 1929 fps= 38 q=31.0 size=? ? 7424kB time=00:00:31.26 bitrate=1945.1kbits/frame= 1950 fps= 38 q=31.0 size=? ? 7424kB time=00:00:31.61 bitrate=1923.6kbits/frame= 1973 fps= 38 q=31.0 size=? ? 7424kB time=00:00:32.00 bitrate=1900.6kbits/frame= 1991 fps= 38 q=31.0 size=? ? 7424kB time=00:00:32.30 bitrate=1882.9kbits/frame= 2010 fps= 38 q=31.0 size=? ? 7680kB time=00:00:32.61 bitrate=1928.9kbits/frame= 2031 fps= 38 q=31.0 size=? ? 7680kB time=00:00:32.96 bitrate=1908.4kbits/frame= 2051 fps= 38 q=31.0 size=? ? 7680kB time=00:00:33.30 bitrate=1889.3kbits/frame= 2067 fps= 37 q=31.0 size=? ? 7680kB time=00:00:33.56 bitrate=1874.3kbits/frame= 2079 fps= 37 q=31.0 size=? ? 7936kB time=00:00:33.76 bitrate=1925.3kbits/frame= 2091 fps= 37 q=31.0 size=? ? 7936kB time=00:00:33.96 bitrate=1914.0kbits/frame= 2106 fps= 37 q=31.0 size=? ? 7936kB time=00:00:34.21 bitrate=1900.0kbits/frame= 2111 fps= 37 q=31.0 size=? ? 7936kB time=00:00:34.30 bitrate=1895.4kbits/frame= 2124 fps= 37 q=31.0 size=? ? 7936kB time=00:00:34.51 bitrate=1883.5kbits/frame= 2145 fps= 37 q=31.0 size=? ? 7936kB time=00:00:34.86 bitrate=1864.6kbits/frame= 2165 fps= 37 q=31.0 size=? ? 8192kB time=00:00:35.20 bitrate=1906.5kbits/frame= 2185 fps= 37 q=31.0 size=? ? 8192kB time=00:00:35.53 bitrate=1888.6kbits/frame= 2205 fps= 37 q=31.0 size=? ? 8192kB time=00:00:35.86 bitrate=1871.1kbits/frame= 2226 fps= 37 q=31.0 size=? ? 8192kB time=00:00:36.21 bitrate=1853.0kbits/frame= 2245 fps= 37 q=31.0 size=? ? 8448kB time=00:00:36.53 bitrate=1894.3kbits/frame= 2263 fps= 37 q=31.0 size=? ? 8448kB time=00:00:36.83 bitrate=1878.9kbits/frame= 2280 fps= 37 q=31.0 size=? ? 8448kB time=00:00:37.11 bitrate=1864.6kbits/frame= 2299 fps= 36 q=31.0 size=? ? 8448kB time=00:00:37.43 bitrate=1848.8kbits/frame= 2319 fps= 36 q=31.0 size=? ? 8704kB time=00:00:37.76 bitrate=1888.0kbits/frame= 2335 fps= 36 q=31.0 size=? ? 8704kB time=00:00:38.03 bitrate=1874.8kbits/frame= 2352 fps= 36 q=31.0 size=? ? 8704kB time=00:00:38.31 bitrate=1860.9kbits/frame= 2371 fps= 36 q=31.0 size=? ? 8704kB time=00:00:38.63 bitrate=1845.6kbits/frame= 2388 fps= 36 q=31.0 size=? ? 8704kB time=00:00:38.91 bitrate=1832.2kbits/frame= 2407 fps= 36 q=31.0 size=? ? 8960kB time=00:00:39.23 bitrate=1870.9kbits/frame= 2425 fps= 36 q=31.0 size=? ? 8960kB time=00:00:39.53 bitrate=1856.7kbits/frame= 2447 fps= 36 q=31.0 size=? ? 8960kB time=00:00:39.90 bitrate=1839.6kbits/frame= 2466 fps= 36 q=31.0 size=? ? 8960kB time=00:00:40.21 bitrate=1825.1kbits/frame= 2487 fps= 36 q=31.0 size=? ? 9216kB time=00:00:40.56 bitrate=1861.1kbits/frame= 2504 fps= 36 q=31.0 size=? ? 9216kB time=00:00:40.85 bitrate=1848.2kbits/frame= 2520 fps= 36 q=31.0 size=? ? 9216kB time=00:00:41.11 bitrate=1836.2kbits/frame= 2537 fps= 36 q=31.0 size=? ? 9472kB time=00:00:41.40 bitrate=1874.3kbits/frame= 2565 fps= 36 q=31.0 size=? ? 9472kB time=00:00:41.86 bitrate=1853.4kbits/frame= 2581 fps= 36 q=31.0 size=? ? 9472kB time=00:00:42.13 bitrate=1841.7kbits/frame= 2629 fps= 37 q=31.0 size=? ? 9728kB time=00:00:42.93 bitrate=1856.2kbits/frame= 2667 fps= 37 q=31.0 size=? ? 9728kB time=00:00:43.56 bitrate=1829.2kbits/frame= 2694 fps= 37 q=31.0 size=? ? 9728kB time=00:00:44.01 bitrate=1810.5kbits/frame= 2698 fps= 37 q=-1.0 Lsize=? ? 9884kB time=00:00:44.91 bitrate=1802.7kbits/s speed=0.613x

video:9853kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.316887%

[libx264 @ 0x7ff3b6c02d40] frame I:12? ? Avg QP:19.82? size: 30896

[libx264 @ 0x7ff3b6c02d40] frame P:878? ?Avg QP:25.18? size:? 6687

[libx264 @ 0x7ff3b6c02d40] frame B:1808? Avg QP:28.05? size:? 2128

[libx264 @ 0x7ff3b6c02d40] consecutive B-frames:? 6.3%? 9.3% 11.3% 73.1%

[libx264 @ 0x7ff3b6c02d40] mb I? I16..4: 29.8% 61.3%? 8.9%

[libx264 @ 0x7ff3b6c02d40] mb P? I16..4:? 2.4%? 4.3%? 0.6%? P16..4: 12.3%? 2.1%? 0.9%? 0.0%? 0.0%? ? skip:77.4%

[libx264 @ 0x7ff3b6c02d40] mb B? I16..4:? 0.1%? 0.3%? 0.1%? B16..8: 15.5%? 0.6%? 0.1%? direct: 0.2%? skip:83.0%? L0:50.6% L1:48.6% BI: 0.8%

[libx264 @ 0x7ff3b6c02d40] 8x8 transform intra:59.7% inter:73.2%

[libx264 @ 0x7ff3b6c02d40] coded y,uvDC,uvAC intra: 14.0% 19.8% 11.6% inter: 0.8% 2.1% 0.4%

[libx264 @ 0x7ff3b6c02d40] i16 v,h,dc,p: 31% 64%? 3%? 2%

[libx264 @ 0x7ff3b6c02d40] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 13% 53%? 2%? 3%? 2%? 2%? 2%? 2%

[libx264 @ 0x7ff3b6c02d40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 28% 25%? 3%? 5%? 4%? 4%? 3%? 3%

[libx264 @ 0x7ff3b6c02d40] i8c dc,h,v,p: 62% 29%? 8%? 1%

[libx264 @ 0x7ff3b6c02d40] Weighted P-Frames: Y:2.4% UV:1.8%

[libx264 @ 0x7ff3b6c02d40] ref P L0: 69.0%? 6.8% 15.6%? 8.6%? 0.0%

[libx264 @ 0x7ff3b6c02d40] ref B L0: 86.2% 11.7%? 2.1%

[libx264 @ 0x7ff3b6c02d40] ref B L1: 96.3%? 3.7%

[libx264 @ 0x7ff3b6c02d40] kb/s:1794.88