Opens files using ffmpeg and nothing else. May be frame accurate on good days. The source is MIT licensed and can be obtained from https://spaceboyz.net/svn/aegisub/trunk/FFmpegSource2. The precompiled binary is GPL licensed. If you are religious you may consider this the second coming.
</p>
<h2>Compatibility - Video</h2>
<ul>
<li>AVI, MKV, MP4, FLV: Frame accurate</li>
<li>WMV: Frame accurate(?) but avformat seems to pick keyframes relatively far away</li>
<li>OGM: Messed up first frame and seeking produces smearing with seekmode=3, incredibly slow seeking without, remux to mkv or avi</li>
<li>VOB: No rff flags applied, frame accurate?</li>
<li>MPG: Seeking seems to be off by one or two frames now and then</li>
<li>M2TS, TS: Linear access only (seekmode=-1)</li>
<li>Image files: Most formats can be opened if seekmode=-1 is set</li>
</ul>
<h2>Compatibility - Audio</h2>
<ul>
<li>All formats are written to separate wave64 files</li>
Opens audio, <b>if an index already exists it needs to contain a suitable audio index or empty audio will be returned</b>, will invoke indexing with the defaults if no preexisting index is found
Which audio tracks to index/write to disk. Dumping a track also implies indexing since the same work has to be done anyway. It is a binary mask meaning that 7 corresponds to writing tracks 1-3. Non-audio tracks are ignored. -1 writes all tracks.
See the table below for a full description, an empty string means no processing. It is recommended to avoid the autoq option since it's currently unknown what effect it will have on the processing.
</p>
<p>
<b>threads:</b>
Sets the number of decoder threads used. Defaults to the number of cpus reported by windows. Ignored by lavc if the used decoder doesn't implement it.
</p>
<p>
<b>seekmode:</b>
Force how seeking is handled, has no effect on matroska files which always use the equivalent of seekmode=1<br/>
<b>-1:</b> linear access without rewind, will throw an error if each successive requested frame number isn't bigger than the last one, only intended for opening images but might work on well with some obscure video format<br/>
<b>0:</b> linear access, the definition of slow but should make some formats "usable"<br/>
<b>1:</b> safe normal, bases seeking decisions on the reported keyframe positions<br/>
<b>2:</b> unsafe normal, same as 1 but no error will be thrown if the exact destination has to be guessed<br/>
<b>3:</b> aggressive, seek in the forward direction even if no closer keyframe is known to exist, only useful for testing and containers where avformat doesn't report keyframes properly
</p>
<p>
<b>width & height:</b>
Width and height to resize to. Value below or equal to 0 is the same as specifying the input dimensions.
</p>
<p>
<b>resizer:</b>
Selects the resizer used for resampling the chroma planes and normal resizing. The available methods are: FAST_BILINEAR, BILINEAR, BICUBIC, X, POINT, AREA, BICUBLIN, GAUSS, SINC, LANCZOS and SPLINE.
</p>
<p>
<b>colorspace:</b>
The colorspace to convert to. The names are YV12, YUY2, RGB24, RGB32 and the empty string for same as input.
The playback aspect ratio specified by the container. FFSAR_NUM and FFSAR_DEN make up the rational number of the ratio and FFSAR is only provided for convenience.
The on playback cropping specified by the container.
</p>
<p>
<b>FFPICT_TYPE:</b>
The picture type of the most recently requested frame. Use after_frame=true in Avisynth's conditional scripting for proper results. The FFmpeg source definition of the numbers:
<li>Readded FFAudioSource support for other containers (glitches still present now and then but no separate raw cache is required and possibly less buggy)</li>
