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What's the actual video format? I mean, my knowledge is a bit dated, but don't codecs like x264 usually have I B and P frames so you couldn't cut at an arbitrar
by iforgotpassword 9y ago
What's the actual video format? I mean, my knowledge is a bit dated, but don't codecs like x264 usually have I B and P frames so you couldn't cut at an arbitrary frame without reencoding. Do you just emit I frames or does x264 have some more advanced tricks available?
- TheTon 9y agoIt's not just I (key) frames. That would be really bad for quality or data rate. There's an I frame every 1 second, which gives me a place to cut. In general, not just for RetroClip, having I frames is important as it will allow for efficient scrubbing through the video in a playback application.
- iforgotpassword 9y agoAh right so you technically don't save exactly 60.0 seconds, but I guess that's OK ;) Like I said my knowledge of this stuff mostly dates back to mpeg2 days and I could have sworn the I frames were further apart, except on scene cuts.
- TheTon 9y agoI actually pad it to avoid coming up short :)