Card class and Video Camera

[tommy m]

We all know that shooting in 720P on the Evo is not as great quality as the Iphone. Could this be because the on the Iphone it's shooting to a SSD instead of a card? Has anyone seen a difference is recording quality using a higher class card? ie a 6 or a 10? I know on a class 2 it looks horrible. But if a faster card would help the video recording quality I will take the plunge.

 

[Jerzyiroc]

I wonder if one of the biggest problems with the quality is software related. I've been using the Vignette app to take pictures because he pictures are a bit more crisp and the colors are much better. I wonder if simply a better video recording app would make the quality better.

 

[djkleric]

I think that the way it compresses the video is the major factor in the final product. Does anyone know what codec it uses?

 

[sveilien]

It's an mp4v video code, I guess the 720p bitrate isn't high enough. I know that the audio sampling rate is at 8khz which is why the sound is so poor (its using the default telephony AMR audio codec, which is pretty lame).

EDIT:
I just looked at the details for the 800x480 videos I shot today and they are at 2Mbps and they look pretty good. Haven't filmed in 720p yet.

EDIT pt 2:
Ok, in the gallery, if u long press the video thumbnail, u can see the videos' details. I noticed on my 800x480 videos shot today (they were in sunlight and relatively fast action) the details said the FPS varied from 28 to 29, which is higher than the EVO is suppose to be able to record. Also, I did a little test 720p video in very very low light just a minute ago and its details say its at 6Mbps but was only 9FPS. Seems that light plays a greater role in how the camera and software record than just a static setting. Oh, and I'm using a 16GB class 6 card.

 

[meyerweb#CB]

Not surprising that low light results in a lower frame rate. In low light, the sensor needs more time to gather enough light to record an image, and it can't let the next frame start until the current one is adequately exposed.

 

[iboombastic]

Its because it uses H.263 , while the iPhone uses H.264

 

[shibumi]

Its because it uses H.263 , while the iPhone uses H.264

Are you sure about that? When I go into the settings for video recording on my EVO I can select either MPEG4 or H.263.

Not sure if our MPEG4 is H.264 or not, but why would it be H.263 if that's the other option listed?

 

[Jerzyiroc]

I'm curious if anyone has made a video recording app? And if not would it be possible to make such an app that doesn't compress the video like a 500 pound chick sitting on an ant and also uses the correct codecs including for audio and video?

 

[brittonx]

Are you sure about that? When I go into the settings for video recording on my EVO I can select either MPEG4 or H.263.

Not sure if our MPEG4 is H.264 or not, but why would it be H.263 if that's the other option listed?

The problem is you cannot use H.264 to record anything other than very low resolution videos. So, its there but pretty useless.

 

[scrubcst]

yeah.there is no h.264 on the settings. also. I messed around with my buddies droidx with video and audio. the recording rate is locked at 20 fps on my evo where its at 60 on his. so that and also the refresh rate u believe plays a major factor in it. which has a high at 60 Hz. I just recorded a 720. with 60hz and as I pressed to focus it got dim
. as soon as I pressed record. the light sensor went up. so the camera is trying too hard with th light whereas not with the quality. that's my only conclusion.



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[tommy m]

Played with a Galaxy X today, video on that was much better than my EVO.