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6bf709287a
This cutter works by only cutting the first and last segments to size, then concatting them with the other segments, so we only ever process a few seconds of video instead of the entire video duration. However, to make this work, care must be taken that the cut segments use the same codecs as the other segments. The reason it's experimental is that we are not yet confident in its ability to cut accurately and without sync issues. We have seen some minor issues when trying to play back the raw output files, but youtube's re-encoding has consistently smoothed out those issues and they seem to be highly player-specific. Vigorous testing is needed. Also note that both methods right now (cat then cut, and cut then cat) only work if all the segments are cattable, that is they all use the same codecs, have the same resolution, etc. If a stream were to change its encoding settings, and we were cutting over that change, both approaches would not work. We should add checks for that scenario (which can only happen over a stream drop), and if so fallback to a slow method using ffmpeg's concat filter, which will work even for disparate codecs, though reconciling mismatched resolutions or frame rates may require further work. |
6 years ago | |
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| .. | ||
| restreamer | 6 years ago | |
| Dockerfile | 6 years ago | |
| setup.py | 6 years ago | |