Changing audio codec in video recording
Video recoding with camera app uses for audio this codec: AMR-NB 4.75-2.2kbps sampled @ 8kHz
Is there any way to change it to something less ****ty like AAC?
It is a OS limitation or app limitation?
Really...what is with the telephone quality 8Khz audio quality when recording video with the N1?
I noticed this immediately after switching from the iPhone to the N1 ... and it bothers me immensely
There must be some sort of fix for this...surely the quality of the microphone can't be THAT bad
I agree. maybe it will be fixed with a firmware update. I also don't like the somewhat low 20 frames per second video recording either.
yea... this phone phone has better optics and hardware than the current iPhone 3GS, we should be seeing some really good definition video and sound here. this also bugs me, as i came from a 3gs like yourself.
if you check out RTA Analyzer from the market and run a white noise test on it, you'll see the microphone is lacking severely...
+1 Its horrible
antoniouslj said:
if you check out RTA Analyzer from the market and run a white noise test on it, you'll see the microphone is lacking severely...
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But we got two mics on the phone it have to be better, cant anyone fix this?!
My research shows this is a hardware limitation on the N1 - the actual A/D convertor only works at 8kHz according to Google's official spec-
http://www.google.com/phone/static/en_US-nexusone_tech_specs.html
"AMR-NB 4.75 to 12.2 kbps sampled @ 8 kHz" is the only listed encoder, I presume this is on-chip so can't be changed.
I too am very disappointed with this audio encoder (only other thing I dislike is the mediocre axis-swapping touchscreen on the N1 - but that's only really bad for games)
after it is possible to ramp the video up to 720p i think it should also be possible to ramp up the audio, any developers have thoughts on this?
Sent from my GT-I9000 using XDA App
you should download a voice memo app for the Nexus One, there the audio doesn;t sound half as bad, higher bitrates are also possible!
creepinshadow said:
you should download a voice memo app for the Nexus One, there the audio doesn;t sound half as bad, higher bitrates are also possible!
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Which one please?
http://www.androlib.com/android.application.com-tokasiki-android-voicerecorder-pqm.aspx
Its Software limitation, Cyanogen and I have tried a lot to improve it, no luck so far
So I received the 4.3 OTA update for my International HTC One yesterday (in Denmark). Everything looks good, except for video recording - It doesn't record any audio at all with my videos, and it looks like the video frame rate is way to high as well! When I play them on the phone, or my computer, there's no audio with it.
Incoming calls, music, and notifications work, also audio from older videos I've recorded, so this is only a problem with videos I record after the OTA update.
I've been google-ing around and searching the forum for a similar issue but without any results.
Is there anybody else experience the same problem after the update?
Cheers
After I updated my HTC One to Android KitKat the Phone only records with one channel (left channel) instead of two (stereo) when using the camcorderfunction.
Anyone having the same issue?
What Rom are you on? I wrote about that when I installed Viper over the weekend. Noticed exact same thing. Thought my second Mic was dead. The only one active is the Mic on the bottom.
But, I returned to my 4.4 stock kit Kat T-Mobile US Rom, and stereo recording is working.
If you can list what Rom you are on that would be great.
Sent from my HTC One using Tapatalk
gustav30 said:
What Rom are you on? I wrote about that when I installed Viper over the weekend. Noticed exact same thing. Thought my second Mic was dead. The only one active is the Mic on the bottom.
But, I returned to my 4.4 stock kit Kat T-Mobile US Rom, and stereo recording is working.
If you can list what Rom you are on that would be great.
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
I'm using the stock rom. Just updated from stock 4.3 to 4.4 (4.19.401.9) I'm from Holland. After the factory reset the problem still excist
Not sure...we need more testers to try some video recording and post results.
The problem is that testing a video and relying on the phone speakers to show the problem won't work, since the phone speakers will play the left track through both speakers, giving the appearance that audio was recorded in stereo...
The video needs to be listened through earphones, or copy the video from the phone to PC/MAC and then give it a listen.
gustav30 said:
Not sure...we need more testers to try some video recording and post results.
The problem is that testing a video and relying on the phone speakers to show the problem won't work, since the phone speakers will play the left track through both speakers, giving the appearance that audio was recorded in stereo...
The video needs to be listened through earphones, or copy the video from the phone to PC/MAC and then give it a listen.
Click to expand...
Click to collapse
I've copied the video to the pc. The sound is still coming from the left channel. I hope this isn't permanently.
Chdcmac said:
After I updated my HTC One to Android KitKat the Phone only records with one channel (left channel) instead of two (stereo) when using the camcorderfunction.
Anyone having the same issue?
Click to expand...
Click to collapse
Anyone, please? Am I the only one here who has this problem with 4.4? (OTA)
I've seen a few posts in the Rom threads where people have brought this up. Saw a post in Revolution and Insert Coin threads.
But we need more people to test video recording and then listen through ear buds or on computer.
Anyone who is on the latest and greatest Sense 5.5 kit Kat builds, can you please make a short video using the Sense camera app, and listen to it through headphones or on computer? Do you only have audio coming out of the left channel?
Sent from my HTC One using Tapatalk
gustav30 said:
I've seen a few posts in the Rom threads where people have brought this up. Saw a post in Revolution and Insert Coin threads.
But we need more people to test video recording and then listen through ear buds or on computer.
Anyone who is on the latest and greatest Sense 5.5 kit Kat builds, can you please make a short video using the Sense camera app, and listen to it through headphones or on computer? Do you only have audio coming out of the left channel?
Sent from my HTC One using Tapatalk
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Click to collapse
Yes. But strangely, when I restart the phone and make a video, then it works perfectly :S But when I make a second video, the audio comes only from the left channel.
I can confirm that.
There is a command, which HTC uses to activate the camcorder mic. Maybe HTC forgot to call this procedure when restarting the 2nd recording.
The function is already present in the phone application to enable the camcorder mic for the noise canceling function.
I use this as a workarround to enable stereo recording.
Maybe someone can compare the old and the new video app to find the "enableCamcorderMic" Function and make it available for other applications. There are some applications which allow to select between the main and the camcorder mic. They work on most devices, which have 2 mics, but not on the HTC ONE. This can be tricked out by switching to the phone application while a recording-application already records. Start a call and cancel the call. Then return to the recording app via taskmanager and you will have 2 channel recording. Unfortunately this does not work for the video app, which cancels video recording when switching to the phone app. But I did not need the workarround in the past for the videoapplicatiom. But now HTC has a bug in it. I hope someone could be able to isolate the "enableCamcorderMic" function.
Ralf
audioralf said:
I can confirm that.
There is a command, which HTC uses to activate the camcorder mic. Maybe HTC forgot to call this procedure when restarting the 2nd recording.
The function is already present in the phone application to enable the camcorder mic for the noise canceling function.
I use this as a workarround to enable stereo recording.
Maybe someone can compare the old and the new video app to find the "enableCamcorderMic" Function and make it available for other applications. There are some applications which allow to select between the main and the camcorder mic. They work on most devices, which have 2 mics, but not on the HTC ONE. This can be tricked out by switching to the phone application while a recording-application already records. Start a call and cancel the call. Then return to the recording app via taskmanager and you will have 2 channel recording. Unfortunately this does not work for the video app, which cancels video recording when switching to the phone app. But I did not need the workarround in the past for the videoapplicatiom. But now HTC has a bug in it. I hope someone could be able to isolate the "enableCamcorderMic" function.
Ralf
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Click to collapse
Hi - can you explain in more detail what your workaround is? Take first video - then open phone app - then go back to camera app? Or does this not work anymore.
Anyone else experience this issue of only getting stereo recording in the first go around...exit camera app....go back to camera app start a new video.
listen to the second video you took through headphones or on computer - do you hear both channels?
gustav30 said:
Hi - can you explain in more detail what your workaround is? Take first video - then open phone app - then go back to camera app? Or does this not work anymore.
Anyone else experience this issue of only getting stereo recording in the first go around...exit camera app....go back to camera app start a new video.
listen to the second video you took through headphones or on computer - do you hear both channels?
Click to expand...
Click to collapse
I described it more detailed here But unfortunately it does not help for the new camera bug, because the video application stops recording, when switching to the phone application. Normal audio application continue recording when taking or receiving a call, so they benefit from the oping of the camcorder channel which the phone application does for the noise canceling funciton.
Did you try to install the old video application from older stock ROM to your phone. Maybe that helps.
Ralf
audioralf said:
I described it more detailed here But unfortunately it does not help for the new camera bug, because the video application stops recording, when switching to the phone application. Normal audio application continue recording when taking or receiving a call, so they benefit from the oping of the camcorder channel which the phone application does for the noise canceling funciton.
Did you try to install the old video application from older stock ROM to your phone. Maybe that helps.
Ralf
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Click to collapse
I actually threw on one of the Sense 6 roms. Guess what, no good. Same exact problem.
Something tells me its in the kernel of 4.4.2.
What's bugging me is that no one else either doesn't notice this problem or doesn't care judging by the lack of of comments I've seen. It would be hard to get a Dev on board to look into if there is lack of interest.
Right now I've flashed a Google play rom. While the Google play Roms don't do video recording in stereo at least mono recording is handled correctly, by distributing the source to both channels.
In sense its not mono in that the right side is just dead. Nothing worse than playing back videos on a computer or TV and having the right speaker sometimes on and then off.
Sent from my HTC One using Tapatalk
gustav30 said:
I actually threw on one of the Sense 6 roms. Guess what, no good. Same exact problem.
Something tells me its in the kernel of 4.4.2.
What's bugging me is that no one else either doesn't notice this problem or doesn't care judging by the lack of of comments I've seen. It would be hard to get a Dev on board to look into if there is lack of interest.
Right now I've flashed a Google play rom. While the Google play Roms don't do video recording in stereo at least mono recording is handled correctly, by distributing the source to both channels.
In sense its not mono in that the right side is just dead. Nothing worse than playing back videos on a computer or TV and having the right speaker sometimes on and then off.
Sent from my HTC One using Tapatalk
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Click to collapse
Yes your observation is totally correct. The camcorder mic is responsible for one channel. If it is not available you will get just one channel. In my testings the phone switched to mono recording from the main mic.
I tested to reinstall an older HTC video app via titanium backup, but it did not start.
Ralf
I can confirm this. I just did an RUU and i recorded using the voice recorder and video recorder and both come out with only 1 channel being used and its the left one.
https://www.dropbox.com/sh/xuxe5l1xvqutp0g/JSajfATqqY That has 4 samples in it, 2 using the latest stock update on the sprint htc one m7 and the other 2 are from the sixth sense rom rls2
I am running 4.19.1540.1
EDIT
Ok I see what you're talking about.
Steps to reproduce:
1 Boot to a kit kat sense rom
2 record video A
3 immediately record video B of exact same ambient soundfield. Repeat if desired for videos B1, B2 etc.
4 reboot
5 record video C of exact same ambient soundfield.
Videos A and C are in stereo, video B is in mono.
luigi311 said:
I can confirm this. I just did an RUU and i recorded using the voice recorder and video recorder and both come out with only 1 channel being used and its the left one.
https://www.dropbox.com/sh/xuxe5l1xvqutp0g/JSajfATqqY That has 4 samples in it, 2 using the latest stock update on the sprint htc one m7 and the other 2 are from the sixth sense rom rls2
Click to expand...
Click to collapse
VoiceRecorder was never able to record in stereo, or select the camcorder mic. It stopps, if you change to other app via task manager. So you can not use my workarround to enable the camcorder mic.
---------- Post added at 01:06 PM ---------- Previous post was at 12:32 PM ----------
NxNW said:
I am running 4.19.1540.1
...
Videos A and C are in stereo, video B is in mono.
Click to expand...
Click to collapse
Yes, and following videos D,E, F... Only the first video is in stereo.
So the enableCamcorderMic function ist used in the new video app after reboot. I experimented with killing camera app, gallery and videoplayer after the first video and sometimes I got back the stereo without an reboot. For this I used the app "TaskManager" (not simply the function in the "recent apps" screen). But i could not find a reproducible way.
So we need a firmware switch for this function. Then all apps would profitate from it:
Selecting main or camcorder mic for mono recording.
Using stereo recording.
Using mono recording from both mics. This helps if you held the phone while making notes of a speech (e.g. in university) and recording. On the HTC ONE the main mic points to your body and not in the direction of the speaker.
I hope that one of the devs could find out how HTC enables the camcorder mic in the video app and in the phone application when pressing the call button.
Ralf
audioralf said:
VoiceRecorder was never able to record in stereo, or select the camcorder mic. It stopps, if you change to other app via task manager. So you can not use my workarround to enable the camcorder mic.
---------- Post added at 01:06 PM ---------- Previous post was at 12:32 PM ----------
Yes, and following videos D,E, F... Only the first video is in stereo.
So the enableCamcorderMic function ist used in the new video app after reboot. I experimented with killing camera app, gallery and videoplayer after the first video and sometimes I got back the stereo without an reboot. For this I used the app "TaskManager" (not simply the function in the "recent apps" screen). But i could not find a reproducible way.
So we need a firmware switch for this function. Then all apps would profitate from it:
Selecting main or camcorder mic for mono recording.
Using stereo recording.
Using mono recording from both mics. This helps if you held the phone while making notes of a speech (e.g. in university) and recording. On the HTC ONE the main mic points to your body and not in the direction of the speaker.
I hope that one of the devs could find out how HTC enables the camcorder mic in the video app and in the phone application when pressing the call button.
Ralf
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Click to collapse
I had asked Kernel Dev Flar2 to see if he could reproduce the problem and he could on his M7. He said he might take a look if he has time, but I think he's got the M8 now, so not 100% sure. Hope that he can.
In the meantime - to counter the issue, I've flashed now a Sense 5.5 Android 4.3 Rom on my phone, running on top of KitKat firmware. Stereo recording acts normal the way its supposed to everytime exiting and reopening camera app. So if you need stereo recording, until someone fixes it, I suggest finding a Sense 5.5 Jellybean Rom.
For me its important because I'm always capturing videos of my 6 year old and can't tell her, 'honey hold on, I need to reboot my phone so I can record you in stereo"....
Somehow we have to grab the attention of HTC so they are aware, I hope they don't leave us hanging now that the M8 is out and attention is focused on that.
It would seem to me that everyone who is on a KitKat firmware/Rom probably has this issue - we just need more testers to confirm and then go to HTC on Twitter/Facebook.
gustav30;51474822
Somehow we have to grab the attention of HTC so they are aware said:
Well I have reported the missingaudio recording for normal apps months ago. Even to HTC. I have also uploaded them a audiofile to demonstrate the workarroud, but they told be that they will send it to HTC developer team. I am waiting for months so I decided to share the workaround although it is complicated. I think they don't want other developers use both mics for stereo recording. The people should use the own HTC video app to capture stereo videos. But now they have fallen in their own hole by forgetting to insert the enableCamcorder function in the new videoapp for KitKat. It is ouside the normal Android SDK, so normal developers are not able to use the function.
This is really a restriction and a challenge for developers.
And I think HTC has to react and update their video, because many people will complain the missing stereo on video.
The professional musicians are in small minority, but if you once heard the difference between mono and stereo you will always prefer stereo, because you can better understand even an recorded speech in stereo.
Ralf
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audioralf said:
The professional musicians are in small minority, but if you once heard the difference between mono and stereo you will always prefer stereo, because you can better understand even an recorded speech in stereo.
Ralf
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I play piano so I do feel your pain a bit! It would be nice to record some of my sample libraries in stereo especially with these hDr mics
Sent from my HTC One using Tapatalk
gustav30 said:
I play piano so I do feel your pain a bit! It would be nice to record some of my sample libraries in stereo especially with these hDr mics
Sent from my HTC One using Tapatalk
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Yes you can do that even in KitKat for example with Rec Forge 2 app.
Read my instructions for settings and the workarround. I demonstrate the trick in the attached mp3 file. Listen to the result