Tagged with sample - Personal View Talks

MJPEG Audio Sample Rate and Bitrate on GF1 (maybe other cameras too)

DidiEdd — Mon, 19 Aug 2024 12:35:05 +0000

Hey there, thanks for the ptool hack Vitaly, I've been using it for over half a year now and I'm finally starting to realize its full potential on my GF1 after understanding more about cameras and picture/video data in general, so it's been a big help in regards to my camera hobby, specifically with recording video on a camera not-so-good for video.

But eventually I realized a minor issue as well. This is regarding the audio of MJPEG (on GF1, but maybe other cameras as well). For some reason, when recording MJPEG, the audio bitrate is just okay at 256/257/268/281 kbps. However, the worse issue is that it is being captured at 16,000 samples per second, which is an issue because essentially any frequency past 8 KHz cannot be recorded to the video... With AVCHD Lite, the audio is successfully recorded at a high bitrate of 448 kbps, but even more importantly, the sample rate is 48,000 Hz which can capture frequencies up to 22 KHz safely. I want to make use of MJPEG at times, but with this knowledge I have to be careful not to use it in situations where the audio could be important (considering I have to use my phone as an external mic). It takes time to get my other audio sources running, so in a "quick, record!" moment, I wouldn't want to be forced to use AVCHD Lite in a situation where I would've preferred to use MJPEG, just because the audio will be poor for the time it takes to enable my external audio recording setup.

From what I've seen on the site nowadays, I've gathered that you've done something along the lines of "retiring" from this ptool project, so I understand if there's nothing you can do, but if possible, couldn't there be any way we could get the sample rate fixed to 48 KHz for MJPEG and not just AVCHD? Additionally, for the bitrate settings to affect MJPEG as well, not just AVCHD. Thank you for your time.

Sony FDR X3000 Sample Footage/Hyperlapse

tcarretti — Fri, 13 Jul 2018 21:15:34 +0000

Got a chance to play with my FDR X3000 and I'm really happy with the video quality. Here's a video that I did this afternoon in my truck. The camera is a breeze to use and even in 1080p60 the quality is impressive.

Hopefully, the YouTube compression won't be too bad. The original file looks great!

Bit depth and sample rate - Impact on audio editing quality

joethepro — Thu, 28 Jul 2016 17:58:56 +0000

If I were to record 2 wav files, one at 16/48k, and one at 24/96k, I understand that there would be little to no perceptible difference in the sound quality to most listeners. As far as editing the file goes, how do the higher quality files make a difference? Will I be able to pitch shift or slow down the 24/96k file farther without it breaking up, for example?

Panasonic HC-V700 Camcorder Review

QuinEtiam — Fri, 21 Jun 2013 00:37:27 +0000

I bought the Panasonic HC-v700 Camcorder based on this review:

http://www.camcorderinfo.com/content/panasonic-hc-v700-camcorder-review/conclusion

For me the 1080/60p and the telemacro mode are the two best things about this camcorder.

I shoot for Microstock and Vimeo, I can't tell you a codex from a follow-focus. I point/shoot and hope it looks good.

The 1080/60i mode has weird interlaced kinda lines, not sure if it's my workflow or what.

I've owned the GH1, Sony A55, Nikon P500 and Gopro Hero2 and this Camcorder produces a better image.

Here's a Time Lapse I shot, just sped-up to 800% in Motion5.

Grizzly shot a full zoom, slowed from 60p to 30p.

Telemacro shot.

another one

60i shot

There's a 180 photo burst mode that is kinda neat...

I have shaky hands but I think someone could make the zoom work smoothly

Apparently the updated Panasonic HC-v720 model is slightly better. http://thewirecutter.com/reviews/the-best-camcorder-is-the-panasonic-hc-v720/

For $460 it's a pretty good Camcorder. I think.

Hacked GF2 footage topic

THX1965 — Wed, 22 Feb 2012 14:49:23 +0000

Now that the new PTool 3.64 supports the GF2 alongside the GH2 (Vitaliy, your work is absolutely amazing!!!), it would be great to see some actual footage with any of the new patches that also work for the GF2. There is bascially nothing out there on YouTube or Vimeo.

I'd love to add a GF2 to my GH2. Any hacked sample footage would really be helpful in making that decission.

Thanks to everyone in advance for this. I am sure I am not the only one who'd love to see some tests.

44.1 ok for movie audio in DCP digital age?

matt_gh2 — Sat, 03 Aug 2013 12:02:27 +0000

I'm working on producing a feature film. Most audio is recorded at 24/96, but a lot is being recorded at 44.1. I remember hearing that in terms of using on actual film, it needed to be 48. But given that I've heard most theatrical distribution is on Digital Cinema Package (DCP) these days, is it okay to have some of the audio recorded at 44.1?