Most video/audio formats can be loaded into AviSynth, but there are some exceptions like flv4 (VP6) and dvr-ms. If it is not possible to load a clip into AviSynth, you will have to convert it into some other format which can be loaded. Remember to choose a format for which you will have a minimal downgrade in quality as a result of the conversion.
In general there are two ways to load your video into AviSynth:
Make sure that your clip contains maximal one video and/or one audio stream (thus remove the subtitles and remove other video/audio streams). If you want to load a clip which contains both video and audio, you have two options:
When loading a clip into AviSynth it is adviced to follow the following guidelines:
advantages of DirectShowSource:
disadvantages of DirectShowSource:
No, the video and the audio are decompressed when opening them into AviSynth.
There is a modification of AviSynth v2.55 which supports 'direct stream copy' for both video and audio. This modification is called DSynth and can be downloaded here. Perhaps it will be updated and merged into the official AviSynth builds one day.
Use AviSource to load your AVI files in AviSynth. Example:
AviSource("d:\filename.avi")
or without the audio:
AviSource("d:\filename.avi", false)
If AviSynth is complaining about not being able to load your avi (couldn't decompress ...) you need to install an appropriate codec. GSpot, for example, will tell you what codec you need to install in order to be able to open your avi.
Forcing a decoder being used for loading the clip into AviSynth:
# load your avi using the XviD codec:
AviSource("d:\filename.avi", fourCC="XVID") # opens an avi (for example encoded with DivX3) using the XviD Codec
# load your dv-avi using the Canopus DV Codec:
AviSource("d:\filename.avi", fourCC="CDVC")
It is always possible to demux your audio from the AVI file and load it separately in AviSynth using an audio decoder, but in some cases (for example: AVI with MP2/MP3/AC3/DTS audio) it is possible to load it directly in AviSynth.
For loading your AVI with audio you need (1) a VfW (Video for Windows) codec to open (that is decode) your video in AviSynth and an ACM (Audio Compression Manager) codec to open your audio in AviSynth. For many video and audio format such codecs are available, but certainly not for all of them.
In the document "Importing media into AviSynth" you can find those codecs.
DGDecode is an external plugin and supports MPEG-1, MPEG-2 / VOB, TS (with MPEG-4 ASP video) and PVA streams. Open them into DGIndex first and create a d2v script which can be opened in AviSynth (note that it will only open the video into AviSynth):
A few examples:
# DGDecode:
LoadPlugin("d:\dgdecode.dll")
mpeg2source("d:\filename.d2v")
If your transport stream (*.TS) contains MPEG-4 AVC video you need to demux the raw video stream from it and use DGAVCDec to open it in AviSynth. See here for its usage.
There are two ways to load your quicktime movies into AviSynth (and also RawSource for uncompressed movs): QTSource and QTReader. The former one is very recent and able to open many quicktime formats (with the possibility to open them as YUY2), but you need to install QuickTime player in order to be able to use this plugin. The latter one is very old, no installation of a player is required in order to be able to open quicktime formats in AviSynth.
QTSource:
You will need Quicktime 6 for getting video only or Quicktime 7 for getting audio and video.
# YUY2 (default):
QTInput("FileName.mov", color=2)
# with audio (in many cases possible with QuickTime 7)
QTInput("FileName.mov", color=2, audio=true)
# raw (with for example a YUYV format):
QTInput("FileName.mov", color=2, mode=1, raw="yuyv")
# dither = 1; converts raw 10bit to 8bit video (v210 = 10bit uyvy):
QTInput("FileName.mov", color=2, dither=1, raw="v210")
QTReader:
If that doesn't work, or you don't have QuickTime, download the QTReader plugin (can be found in Dooms download section):
LoadVFAPIPlugin("C:\QTReader\QTReader.vfp", "QTReader")
QTReader("C:\quicktime.mov")
The external plugin RawSource supports all kinds of raw video files with the YUV4MPEG2 header and without header (video files which contains YUV2, YV16, YV12, RGB or Y8 video data).
Examples:
# This assumes there is a valid YUV4MPEG2-header inside:
RawSource("d:\yuv4mpeg.yuv")
# A raw file with RGBA data:
RawSource("d:\src6_625.raw",720,576,"BGRA")
# You can enter the byte positions of the video frames directly (which can be found with yuvscan.exe).
# This is useful if it's not really raw video, but e.g. uncompressed MOV files or a file with some kind of header:
RawSource("d:\yuv.mov", 720, 576, "UYVY", index="0:192512 1:1021952 25:21120512 50:42048512 75:62976512")
RM/RMVB (RealMedia / RealMedia Variable Bitrate usually containing Real Video/Audio): install the rmvb splitter and the Real codecs by installing RealPlayer/RealAlternative. Create the script:
DirectShowSource("d:\clip.rmvb", fps=25, convertfps=true) # adjust fps if necessary
WMV/ASF (Windows Media Video / Advanced Systems Format; usually containing WMV/WMA) is not fully supported by ffdshow, so you will have to install wmv codecs. Get WMF SDK v9 for W2K or later for XP/Vista which contains the codecs (and the DMO wrappers necessary to use DMO filters in DirectShow). You can also get these codecs from Windows Media Player 9 Series or later, Windows Media Format runtime (WMFDist.exe), Codec Installation Package (WM9Codecs.exe) from Microsoft site or other place. (Note that Microsoft's own VC1 codec is not supported in W2K since you need WMF SDK v11.) Create the script:
DirectShowSource("d:\clip.wmv", fps=25, convertfps=true) # adjust fps if necessary
If your media file contains MPEG-4 ASP video, then there are two possibilities of opening them in AviSynth:
1) Using the plugin FFmpegSource. All included dlls except ffmpegsource.dll should be copied to your system folder. Some examples:
# loading the video from MKV and returning a timecodes file:
FFmpegSource("D:\file.mkv", vtrack = -1, atrack = -2, timecodes="timecodes_file.txt")
# loading the video and audio from a MP4 and returning a timecodes file:
FFmpegSource("D:\file_aac.mp4", vtrack = -1, atrack = -1, timecodes="timecodes_file.txt")
It's important to generate a timecode file to check whether the video has a constant framerate. If this the case you don't need to use the timecode file and you can process the video in any way you want. However, many non-AVI files contain video with a variable framerate (AVI files always have a constant framerate though), and in that case you need to make sure of the following two things:
The main reason for this is that FFmpegSource opens the video as it is. It doesn't add or remove frames to convert it to constant framerate video to ensure sync.
2) Get ffdshow and open the MP4/MKV file with DirectShowSource, thus for example
DirectShowSource("D:\file.mkv", convertfps=true) # convertfps=true ensures sync if your video has a variable framerate
If your media file contains MPEG-4 AVC video, then there are two possibilities of opening them in AviSynth:
1) Using the plugin FFmpegSource. See above for its usage. At the moment, the supported containers are: AVI, MKV and MP4.
2) Get DGAVCDec. At the moment you need to extract the raw stream (*.264) from the container first (using MKVExtract, MPlayer, TSRemux or whatever program can extract those streams). Open the raw stream file in DGAVCIndex to create an index file (say track1.dga). Open the index file in AviSynth:
# raw video demuxed from M2TS (Blu-ray BDAV MPEG-2 transport streams)
LoadPlugin("C:\Program Files\AviSynth\plugins\DGAVCDecode.dll")
AVCSource("D:\track1.dga")
Use WavSource to open your WAVE PCM files (assuming that they are smaller than 4GB):
WavSource("D:\file.wav")
Use the plugin RaWav to open your WAVE PCM files that are larger than 4GB (Sonic Foundry Video Editor Wave64 Files or W64):
RaWavSource("D:\file.w64", SampleRate=96000, SampleBits=24, Channels=6)
# or when a W64 header is present
RaWavSource("D:\file.w64", SampleRate=6) # assumes the presence of a W64 header and reads the needed info from it
Use NicAudio for loading your MP1/MP2/MP3/MPA/AC3/DTS/LPCM in AviSynth:
Some examples:
LoadPlugin("C:\Program Files\AviSynth25\plugins\NicAudio.dll")
# AC3 audio:
V = BlankClip(height=576, width=720, fps=25)
A = NicAC3Source("D:\audio.AC3")
# A = NicAC3Source("D:\audio.AC3", downmix=2) # downmix to stereo
AudioDub(V, A)
# LPCM audio (48 kHz, 16 bit and stereo):
V = BlankClip(height=576, width=720, fps=25)
A = NicLPCMSource("D:\audio.lpcm", 48000, 16, 2)
AudioDub(V, A)
Use ffdshow (set AAC to libfaad or realaac), and use
DirectShowSource("d:\audio.aac")
For WAVE_FORMAT_EXTENSIBLE, ogg, flac, wma, and other formats, BassAudio and the correspoding libraries and Add-Ons can be used. Note that BassAudioSource can decode stereo aac/mp4, but it can't decode multichannel aac.
Some examples:
bassAudioSource("C:\ab\Dido\001 Here With Me.m4a")
bassAudioSource("C:\ab\Dido\001 Here With Me.aac")
1) Use ImageReader or ImageSource to load your pictures into AviSynth (can load the most popular formats, except GIF and animated formats). See internal documentation for information.
2) Use the Immaavs plugin for GIF, animated formats and other type of pictures.
# single picture:
immareadpic("x:\path\pic.bmp")
# animation:
immareadanim("x:\path\anim.gif")
# image sequence:
immareadseq("x:\path\seq%3.3d.png", start=5, stop=89, fps=25, textmode=2, posx=50, posy=50)
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$Date: 2008/07/06 20:05:17 $