Hi folks,

I recently completed a 37 minute project using 2 Canon cameras. Both cameras recorded for an hour, with both cameras producing four 15 minute clips each.

Using 'split' then deleting unwanted clip fragments (my preferred method to 'trim'), I edited the eight clips into a total of 36 clips and placed them on the timeline in the correct chronological order. Running an SVRT check for h.264, 1920x1080 (24mbps), PAL showed no re-encoding needed (see attached).

When producing, SVRT passed through the first two clips no problems and then re-encoded the remaining 34.

Slightly surprised, I noted that all of the remaining clips were truncated parts of the original 8, and did not start from their original start points.

So I ran a test.

1. Take 4 different clips, about 1 minute each, and place them on the timeline;
2. On each clip, split it 10 seconds before the end and delete the final 10 seconds from the timeline;
3. Run an SVRT check - no re-ncoding needed.
4. Produce - in my case h.264, 1920x1080 (24mbps), 25fps

SVRT runs as expected.

Now do the test again with the original 4 clips, but this time delete the first 10 seconds off each clip. In my case, SVRT fails to work correctly and all 4 clips are re-encoded, even though the SVRT check indicates no rendering needed.

Have a try folks!

Cheers,

Andy
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