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adds HandBrake info
[http://rundlett.com/cms/blog/video-blogging As mentioned], I got a [[wp:Flip Video]] camera. Here then are some notes about video blogging with the camera.
== Recording ==
Although the camera will indicate that it has 60 minutes of record time available when the memory is completely empty, I was able to record over two hours of a User Group presentation. Perhaps the extended available time was due to the high compressibility of a mostly static scene (slides on a screen). More testing is in order.
The zoom capability is a digital effect rather than an optical zoom, so basically you don't want to ever use the zoom because all you will do is make your source more grainy.
== Downloading Video ==
Visit the website
* http://kdenlive.org/
=== Avidemux ===
Using Avidemux, it would prompt me to reindex the file with every FlipVideo avi file that I opened. So, perhaps that is an indication of some internal decoding issue that the FlipVideo presents to any codec trying to read the standard avi container format.
I tried using Avidemux to cut an original. Unfortunately, I've had problems trying to slice an original file produced by the FlipVideo. I tried to cut an orginal 2hr video down to two 45 minute sessions and a 30 minute session. The video cut fine, but the audio was left behind. Presumably this is due to sync issues which I have yet to figure out.
=== HandBrake ===
I used HandBrake successfully to re-encode the avi file into mp4 format. It took 9hours to do the conversion which I left unattended while I went to work. The 954MB source was turned into a 1.4GB mp4 In the log, you can see that it adds several microseconds of silence to keep audio and video in sync.
<pre>
[08:08:59] lingui: Handbrake Version: 0.9.3 (2008112300)
[08:08:59] hb_init: checking cpu count
[08:08:59] hb_init: starting libhb thread
[08:08:59] hb_init: checking cpu count
[08:08:59] hb_init: starting libhb thread
[08:10:01] hb_scan: path=/media/disk/video.blog/2009-01-14.12.30.avi, title_index=0
[08:10:01] scan: trying to open with libdvdread
[08:10:01] dvd: not a dvd - trying as a stream/file instead
Input #0, avi, from '/media/disk/video.blog/2009-01-14.12.30.avi':
Duration: 02:01:43.41, start: 0.000000, bitrate: 1084 kb/s
Stream #0.0: Video: mpeg4, yuv420p, 640x480 [PAR 1:1 DAR 4:3], 30.00 tb(r)
Stream #0.1: Audio: adpcm_ms, 44100 Hz, mono, s16, 177 kb/s
[08:10:02] scan: decoding previews for title 1
[08:10:02] scan: 10 previews, 640x480, 30.000 fps, autocrop = 0/0/0/0, aspect 1.33:1, PAR 1:1
[08:10:02] scan: title (0) job->width:640, job->height:480
[08:10:02] libhb: scan thread found 1 valid title(s)
[08:14:05] hb_scan: path=/media/disk/video.blog/2009-01-14.12.30.avi, title_index=1
[08:14:05] scan: trying to open with libdvdread
[08:14:05] dvd: not a dvd - trying as a stream/file instead
Input #0, avi, from '/media/disk/video.blog/2009-01-14.12.30.avi':
Duration: 02:01:43.41, start: 0.000000, bitrate: 1084 kb/s
Stream #0.0: Video: mpeg4, yuv420p, 640x480 [PAR 1:1 DAR 4:3], 30.00 tb(r)
Stream #0.1: Audio: adpcm_ms, 44100 Hz, mono, s16, 177 kb/s
[08:14:06] scan: decoding previews for title 1
[08:14:06] scan: 10 previews, 640x480, 30.000 fps, autocrop = 0/0/0/0, aspect 1.33:1, PAR 1:1
[08:14:06] scan: title (0) job->width:640, job->height:480
[08:14:06] libhb: scan thread found 1 valid title(s)
[08:14:06] lingui: Preset: Basic->Normal
[08:14:06] 2 job(s) to process
[08:14:06] starting job
[08:14:06] work: sanitizing track 0 mixdown Stereo to Mono
[08:14:06] job configuration:
[08:14:06] * source
[08:14:06] + /media/disk/video.blog/2009-01-14.12.30.avi
[08:14:06] + title 1, chapter(s) 1 to 1
[08:14:06] + container: avi
[08:14:06] + data rate: 1084 kbps
[08:14:06] * destination
[08:14:06] + /home/greg/Desktop/mediawiki/2009-01-14.12.30.mp4
[08:14:06] + container: MPEG-4 (.mp4 and .m4v)
[08:14:06] + chapter markers
[08:14:06] * video track
[08:14:06] + decoder: mpeg4
[08:14:06] + frame rate: same as source (around 30.000 fps)
[08:14:06] + loose anamorphic
[08:14:06] + storage dimensions: 640 * 480 -> 640 * 480, crop 0/0/0/0
[08:14:06] + pixel aspect ratio: 1 / 1
[08:14:06] + display dimensions: 640 * 480
[08:14:06] + encoder: x264
[08:14:06] + options: ref=2:bframes=2:me=umh:ref=1:subme=1:me=dia:analyse=none:trellis=0:no-fast-pskip=0:8x8dct=0:weightb=0
[08:14:06] + bitrate: 1500 kbps, pass: 1
[08:14:06] * audio track 0
[08:14:06] + decoder: Unknown (ADPCM_M) (track 1, id 1)
[08:14:06] + mixdown: Mono
[08:14:06] + encoder: faac
[08:14:06] + bitrate: 160 kbps, samplerate: 44100 Hz
[08:14:06] dvd: not a dvd - trying as a stream/file instead
[08:14:06] encx264: keyint-min: 31, keyint-max: 301
[08:14:06] encx264: encoding with stored aspect 1/1
x264 [info]: using SAR=1/1
x264 [info]: using cpu capabilities: MMX2 SSE2 Cache64
x264 [info]: profile Main, level 3.0
[08:14:06] sync: expecting 219132 video frames
[08:14:07] reader: first SCR 0
[09:07:45] sync: adding 100 ms of silence to audio 0 start 207793188, next 207784187
[10:00:16] sync: adding 100 ms of silence to audio 0 start 415582221, next 415573220
[10:46:40] sync: adding 100 ms of silence to audio 0 start 623375409, next 623366408
[10:54:16] reader: done. 1 scr changes
[10:54:27] sync: got 219089 frames, 219132 expected
[10:54:27] work: average encoding speed for job is 22.772926 fps
[10:54:28] mpeg4-decoder done: 219091 frames, 0 decoder errors, 0 drops
[10:54:28] render: lost time: 0 (0 frames)
[10:54:28] render: gained time: 0 (0 frames) (0 not accounted for)
x264 [info]: slice I:734 Avg QP:11.91 size: 32553 PSNR Mean Y:51.97 U:53.81 V:54.35 Avg:52.55 Global:52.39
x264 [info]: slice P:76107 Avg QP:12.47 size: 9659 PSNR Mean Y:49.26 U:50.86 V:51.46 Avg:49.79 Global:49.61
x264 [info]: slice B:142249 Avg QP:13.27 size: 4273 PSNR Mean Y:49.10 U:50.67 V:51.31 Avg:49.62 Global:49.44
x264 [info]: consecutive B-frames: 1.3% 4.1% 94.7%
x264 [info]: mb I I16..4: 27.3% 0.0% 72.7%
x264 [info]: mb P I16..4: 11.7% 0.0% 0.0% P16..4: 84.0% 0.0% 0.0% 0.0% 0.0% skip: 4.3%
x264 [info]: mb B I16..4: 2.8% 0.0% 0.0% B16..8: 49.8% 0.0% 0.0% direct:26.8% skip:20.6% L0:41.9% L1:52.0% BI: 6.1%
x264 [info]: final ratefactor: 19.77
x264 [info]: SSIM Mean Y:0.9947361
x264 [info]: PSNR Mean Y:49.162 U:50.749 V:51.374 Avg:49.688 Global:49.505 kb/s:1497.25
[10:54:28] adpcm_ms-decoder done: 0 frames, 0 decoder errors, 0 drops
[10:54:28] starting job
[10:54:28] work: sanitizing track 0 mixdown Stereo to Mono
[10:54:28] job configuration:
[10:54:28] * source
[10:54:28] + /media/disk/video.blog/2009-01-14.12.30.avi
[10:54:28] + title 1, chapter(s) 1 to 1
[10:54:28] + container: avi
[10:54:28] + data rate: 1084 kbps
[10:54:28] * destination
[10:54:28] + /home/greg/Desktop/mediawiki/2009-01-14.12.30.mp4
[10:54:28] + container: MPEG-4 (.mp4 and .m4v)
[10:54:28] + chapter markers
[10:54:28] * video track
[10:54:28] + decoder: mpeg4
[10:54:28] + frame rate: same as source (around 30.000 fps)
[10:54:28] + loose anamorphic
[10:54:28] + storage dimensions: 640 * 480 -> 640 * 480, crop 0/0/0/0
[10:54:28] + pixel aspect ratio: 1 / 1
[10:54:28] + display dimensions: 640 * 480
[10:54:28] + encoder: x264
[10:54:28] + options: ref=2:bframes=2:me=umh
[10:54:28] + bitrate: 1500 kbps, pass: 2
[10:54:28] * audio track 0
[10:54:28] + decoder: Unknown (ADPCM_M) (track 1, id 1)
[10:54:28] + mixdown: Mono
[10:54:28] + encoder: faac
[10:54:28] + bitrate: 160 kbps, samplerate: 44100 Hz
[10:54:28] dvd: not a dvd - trying as a stream/file instead
[10:54:28] encx264: keyint-min: 31, keyint-max: 301
[10:54:28] encx264: encoding with stored aspect 1/1
x264 [info]: using SAR=1/1
x264 [info]: using cpu capabilities: MMX2 SSE2 Cache64
[10:54:28] reader: first SCR 0
x264 [info]: profile Main, level 3.0
[10:54:51] sync: expecting 219132 video frames
[12:44:10] sync: adding 100 ms of silence to audio 0 start 207793188, next 207784187
[14:42:28] sync: adding 100 ms of silence to audio 0 start 415582221, next 415573220
[16:42:30] sync: adding 100 ms of silence to audio 0 start 623375409, next 623366408
[17:01:15] reader: done. 1 scr changes
[17:01:50] sync: got 219089 frames, 219132 expected
[17:01:50] work: average encoding speed for job is 9.949869 fps
[17:01:52] mpeg4-decoder done: 219091 frames, 0 decoder errors, 0 drops
[17:01:52] render: lost time: 0 (0 frames)
[17:01:52] render: gained time: 0 (0 frames) (0 not accounted for)
x264 [info]: slice I:734 Avg QP:12.25 size: 32048 PSNR Mean Y:51.61 U:54.77 V:55.34 Avg:52.47 Global:52.38
x264 [info]: slice P:76108 Avg QP:12.63 size: 9347 PSNR Mean Y:49.92 U:52.48 V:53.08 Avg:50.67 Global:50.49
x264 [info]: slice B:142248 Avg QP:13.60 size: 4460 PSNR Mean Y:49.67 U:52.04 V:52.73 Avg:50.39 Global:50.23
x264 [info]: consecutive B-frames: 1.3% 4.1% 94.7%
x264 [info]: mb I I16..4: 25.4% 0.0% 74.6%
x264 [info]: mb P I16..4: 4.9% 0.0% 7.2% P16..4: 62.4% 11.1% 10.1% 0.0% 0.0% skip: 4.3%
x264 [info]: mb B I16..4: 4.0% 0.0% 0.0% B16..8: 51.8% 3.3% 2.1% direct:18.5% skip:20.3% L0:45.7% L1:47.3% BI: 7.0%
x264 [info]: ref P L0 77.4% 22.6%
x264 [info]: SSIM Mean Y:0.9959802
x264 [info]: PSNR Mean Y:49.766 U:52.200 V:52.860 Avg:50.494 Global:50.327 kb/s:1500.06
[17:01:52] adpcm_ms-decoder done: 0 frames, 0 decoder errors, 0 drops
[17:01:52] libhb: work result = 0
</pre>
== Video Sharing ==
