如何在没有质量损失的情况下将avs（Avisynth文件）转换为avi？
首先，我将avs改为264：
ffmpeg -i＆＃34; Source.avs＆＃34; -c：v libx264 -preset veryslow -crf 24＆＃34; Output.264＆＃34;
其次，我试图将264转换为avi：
ffmpeg -i＆＃34; input.264＆＃34; ＆＃34; output.avi＆＃34;
最终avi应该有近200MB，但只有2MB。 264文件有近150MB，所以应该是好的。我认为我应该在第二个命令中使用一些编解码器，但我不知道哪个。我试图改变这几天，但没有效果。
或者也许有一种方法可以在没有264的情况下进行无损转换，只有avs到avi？
感谢您的帮助。
编辑：
谢谢你的回答。不幸的是，两种方法都失败了。 首先给我一个视频，这是模糊的，我无法看到任何内容。
输出：
C:\Users\Piotr>"C:\Users\Piotr\Documents\Visual Studio 2010\Projects\SoRecorder\
SoRecorder\bin\Release\Ffmpeg\ffmpeg.exe" -i "C:\Users\Piotr\Documents\Visual St
udio 2010\Projects\SoRecorder\SoRecorder\bin\Release\Scripts\-2016-02-20.avs" -c
copy "E:\-2016-02-20.avi"
ffmpeg version N-78559-g2e8ad2d Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.3.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en
able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena
ble-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --
enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-lib
x265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-d
ecklink --enable-zlib
libavutil 55. 17.103 / 55. 17.103
libavcodec 57. 24.103 / 57. 24.103
libavformat 57. 25.100 / 57. 25.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 32.100 / 6. 32.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, avisynth, from 'C:\Users\Piotr\Documents\Visual Studio 2010\Projects\S
oRecorder\SoRecorder\bin\Release\Scripts\-2016-02-20.avs':
Duration: 00:00:21.80, start: 0.000000, bitrate: 0 kb/s
Stream #0:0: Video: rawvideo (BGRA / 0x41524742), bgra, 1280x720, 15 fps, 15
tbr, 15 tbn, 15 tbc
[avi @ 048d8cc0] bgra rawvideo cannot be written to avi, output file will be unr
eadable
Output #0, avi, to 'E:\-2016-02-20.avi':
Metadata:
ISFT : Lavf57.25.100
Stream #0:0: Video: rawvideo, bgra, 1280x720, q=2-31, 15 fps, 15 tbr, 15 tbn
, 15 tbc
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame= 41 fps=0.0 q=-1.0 size= 147606kB time=00:00:02.73 bitrate=442385.6kbit
frame= 65 fps= 63 q=-1.0 size= 234006kB time=00:00:04.33 bitrate=442379.5kbit
frame= 93 fps= 60 q=-1.0 size= 334806kB time=00:00:06.20 bitrate=442376.3kbit
frame= 110 fps= 51 q=-1.0 size= 396006kB time=00:00:07.33 bitrate=442375.2kbit
frame= 116 fps= 42 q=-1.0 size= 417606kB time=00:00:07.73 bitrate=442374.9kbit
frame= 122 fps= 37 q=-1.0 size= 439206kB time=00:00:08.13 bitrate=442374.6kbit
frame= 128 fps= 33 q=-1.0 size= 460807kB time=00:00:08.53 bitrate=442374.3kbit
frame= 133 fps= 31 q=-1.0 size= 478807kB time=00:00:08.86 bitrate=442374.1kbit
frame= 139 fps= 29 q=-1.0 size= 500407kB time=00:00:09.26 bitrate=442373.8kbit
frame= 145 fps= 27 q=-1.0 size= 522007kB time=00:00:09.66 bitrate=442373.6kbit
frame= 151 fps= 25 q=-1.0 size= 543607kB time=00:00:10.06 bitrate=442373.5kbit
frame= 157 fps= 24 q=-1.0 size= 565207kB time=00:00:10.46 bitrate=442373.3kbit
frame= 163 fps= 23 q=-1.0 size= 586807kB time=00:00:10.86 bitrate=442373.1kbit
frame= 169 fps= 22 q=-1.0 size= 608407kB time=00:00:11.26 bitrate=442373.0kbit
frame= 175 fps= 21 q=-1.0 size= 630007kB time=00:00:11.66 bitrate=442372.8kbit
frame= 181 fps= 21 q=-1.0 size= 651607kB time=00:00:12.06 bitrate=442372.7kbit
frame= 187 fps= 20 q=-1.0 size= 673207kB time=00:00:12.46 bitrate=442372.6kbit
frame= 193 fps= 19 q=-1.0 size= 694807kB time=00:00:12.86 bitrate=442372.5kbit
frame= 199 fps= 19 q=-1.0 size= 716407kB time=00:00:13.26 bitrate=442372.4kbit
frame= 204 fps= 19 q=-1.0 size= 734407kB time=00:00:13.60 bitrate=442372.3kbit
frame= 210 fps= 18 q=-1.0 size= 756007kB time=00:00:14.00 bitrate=442372.2kbit
frame= 215 fps= 18 q=-1.0 size= 774007kB time=00:00:14.33 bitrate=442372.1kbit
frame= 221 fps= 18 q=-1.0 size= 795607kB time=00:00:14.73 bitrate=442372.1kbit
frame= 226 fps= 17 q=-1.0 size= 813607kB time=00:00:15.06 bitrate=442372.0kbit
frame= 232 fps= 17 q=-1.0 size= 835207kB time=00:00:15.46 bitrate=442371.9kbit
frame= 238 fps= 17 q=-1.0 size= 856807kB time=00:00:15.86 bitrate=442371.8kbit
frame= 244 fps= 17 q=-1.0 size= 878407kB time=00:00:16.26 bitrate=442371.7kbit
frame= 250 fps= 16 q=-1.0 size= 900007kB time=00:00:16.66 bitrate=442371.7kbit
frame= 256 fps= 16 q=-1.0 size= 921608kB time=00:00:17.06 bitrate=442371.6kbit
frame= 261 fps= 16 q=-1.0 size= 939608kB time=00:00:17.40 bitrate=442371.6kbit
frame= 267 fps= 16 q=-1.0 size= 961208kB time=00:00:17.80 bitrate=442371.5kbit
frame= 273 fps= 16 q=-1.0 size= 982808kB time=00:00:18.20 bitrate=442371.5kbit
frame= 278 fps= 16 q=-1.0 size= 1000808kB time=00:00:18.53 bitrate=442371.4kbit
frame= 284 fps= 15 q=-1.0 size= 1022408kB time=00:00:18.93 bitrate=442371.4kbit
frame= 290 fps= 15 q=-1.0 size= 1044008kB time=00:00:19.33 bitrate=442371.3kbit
frame= 296 fps= 15 q=-1.0 size= 1065615kB time=00:00:19.73 bitrate=442374.1kbit
frame= 302 fps= 15 q=-1.0 size= 1087215kB time=00:00:20.13 bitrate=442374.0kbit
frame= 308 fps= 15 q=-1.0 size= 1108815kB time=00:00:20.53 bitrate=442373.9kbit
frame= 314 fps= 15 q=-1.0 size= 1130415kB time=00:00:20.93 bitrate=442373.8kbit
frame= 320 fps= 15 q=-1.0 size= 1152015kB time=00:00:21.33 bitrate=442373.7kbit
frame= 326 fps= 15 q=-1.0 size= 1173615kB time=00:00:21.73 bitrate=442373.7kbit
frame= 327 fps= 15 q=-1.0 Lsize= 1177215kB time=00:00:21.80 bitrate=442373.8kbi
ts/s speed=0.967x
video:1177200kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxi
ng overhead: 0.001301%
编辑：PNG命令后输出：
C:\Users\Piotr>"C:\Users\Piotr\Documents\Visual Studio 2010\Projects\SoRecorder\
SoRecorder\bin\Release\Ffmpeg\ffmpeg.exe" -i "C:\Users\Piotr\Documents\Visual St
udio 2010\Projects\SoRecorder\SoRecorder\bin\Release\Scripts\-2016-02-21--1.avs"
-c:v png -pix_fmt bgra "E:\-2016-02-21.avi"
ffmpeg version N-78559-g2e8ad2d Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.3.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en
able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena
ble-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --
enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-lib
x265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-d
ecklink --enable-zlib
libavutil 55. 17.103 / 55. 17.103
libavcodec 57. 24.103 / 57. 24.103
libavformat 57. 25.100 / 57. 25.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 32.100 / 6. 32.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, avisynth, from 'C:\Users\Piotr\Documents\Visual Studio 2010\Projects\S
oRecorder\SoRecorder\bin\Release\Scripts\-2016-02-21--1.avs':
Duration: 00:00:25.07, start: 0.000000, bitrate: 0 kb/s
Stream #0:0: Video: rawvideo (BGRA / 0x41524742), bgra, 640x480, 30 fps, 30
tbr, 30 tbn, 30 tbc
Incompatible pixel format 'bgra' for codec 'png', auto-selecting format 'rgba'
Output #0, avi, to 'E:\-2016-02-21.avi':
Metadata:
ISFT : Lavf57.25.100
Stream #0:0: Video: png (MPNG / 0x474E504D), rgba, 640x480, q=2-31, 200 kb/s
, 30 fps, 30 tbn, 30 tbc
Metadata:
encoder : Lavc57.24.103 png
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> png (native))
Press [q] to stop, [?] for help
frame= 18 fps=0.0 q=-0.0 size= 10716kB time=00:00:00.46 bitrate=188119.0kbit
frame= 35 fps= 34 q=-0.0 size= 23722kB time=00:00:01.03 bitrate=188065.8kbit
frame= 48 fps= 27 q=-0.0 size= 33668kB time=00:00:01.46 bitrate=188052.7kbit
frame= 61 fps= 26 q=-0.0 size= 43614kB time=00:00:01.90 bitrate=188045.7kbit
frame= 74 fps= 26 q=-0.0 size= 53560kB time=00:00:02.33 bitrate=188041.3kbit
frame= 89 fps= 26 q=-0.0 size= 65036kB time=00:00:02.83 bitrate=188037.8kbit
frame= 106 fps= 27 q=-0.0 size= 78042kB time=00:00:03.40 bitrate=188035.1kbit
frame= 123 fps= 28 q=-0.0 size= 91048kB time=00:00:03.96 bitrate=188033.2kbit
frame= 137 fps= 28 q=-0.0 size= 101759kB time=00:00:04.43 bitrate=188032.0kbit
frame= 155 fps= 28 q=-0.0 size= 115530kB time=00:00:05.03 bitrate=188030.8kbit
frame= 186 fps= 31 q=-0.0 size= 125735kB time=00:00:06.06 bitrate=169783.8kbit
frame= 224 fps= 35 q=-0.0 size= 133831kB time=00:00:07.33 bitrate=149501.7kbit
frame= 261 fps= 37 q=-0.0 size= 142679kB time=00:00:08.56 bitrate=136438.4kbit
frame= 300 fps= 40 q=-0.0 size= 151249kB time=00:00:09.86 bitrate=125577.5kbit
frame= 338 fps= 42 q=-0.0 size= 159452kB time=00:00:11.13 bitrate=117326.2kbit
frame= 371 fps= 44 q=-0.0 size= 169169kB time=00:00:12.23 bitrate=113283.3kbit
frame= 407 fps= 45 q=-0.0 size= 178924kB time=00:00:13.43 bitrate=109112.3kbit
frame= 444 fps= 47 q=-0.0 size= 187571kB time=00:00:14.66 bitrate=104767.1kbit
frame= 488 fps= 49 q=-0.0 size= 194672kB time=00:00:16.13 bitrate=98848.5kbits
frame= 535 fps= 51 q=-0.0 size= 199781kB time=00:00:17.70 bitrate=92463.5kbits
frame= 569 fps= 52 q=-0.0 size= 208530kB time=00:00:18.83 bitrate=90705.2kbits
frame= 604 fps= 52 q=-0.0 size= 216658kB time=00:00:20.00 bitrate=88743.0kbits
frame= 622 fps= 52 q=-0.0 size= 229851kB time=00:00:20.60 bitrate=91404.7kbits
frame= 639 fps= 51 q=-0.0 size= 242857kB time=00:00:21.16 bitrate=93991.3kbits
frame= 656 fps= 50 q=-0.0 size= 255863kB time=00:00:21.73 bitrate=96443.0kbits
frame= 673 fps= 49 q=-0.0 size= 268869kB time=00:00:22.30 bitrate=98770.1kbits
frame= 690 fps= 49 q=-0.0 size= 281875kB time=00:00:22.86 bitrate=100981.9kbit
frame= 707 fps= 48 q=-0.0 size= 294881kB time=00:00:23.43 bitrate=103086.7kbit
frame= 724 fps= 48 q=-0.0 size= 307887kB time=00:00:24.00 bitrate=105092.1kbit
frame= 741 fps= 47 q=-0.0 size= 320893kB time=00:00:24.56 bitrate=107005.0kbit
frame= 752 fps= 46 q=-0.0 Lsize= 332381kB time=00:00:25.06 bitrate=108624.9kbi
ts/s speed=1.54x
video:332357kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxin
g overhead: 0.007042%
答案 0 :(得分：4)
您的Avisynth输入是未压缩的，因此您可以将其包装在AVI中，如下所示：
ffmpeg -i source.avs -c:v rawvideo -pix_fmt bgra source.avi
不需要通过H.264进行中介。在任何情况下，您的命令都不会产生无损H.264。为此，你需要
ffmpeg -i "Source.avs" -c:v libx264rgb -crf 0 "Output.avi"
（如果源包含alpha通道，这将是不可接受的，因为H.264不支持alpha）