AT&T/HTC

[#1]

I would like to watch video on the AT&T Tilt, but the performance is so bad (choppy video). I thought this thing would have no problem with h.264 and AAC. Any suggestions on getting smooth playback with acceptable video quality? (I do resize video to QVGA.)

[#2]

what type of vids exactly? what player are you using?

[#3]

They're short four minute music videos. I reencode the video using the baseline h.264 profile, and audio is AAC-low complexity. They are muxed into a mp4 container.

I have tried them in Windows Media Player on the phone and CorePlayer Mobile.

[#4]

---

anonova wrote:

They're short four minute music videos. I reencode the video using the baseline h.264 profile, and audio is AAC-low complexity. They are muxed into a mp4 container.

I have tried them in Windows Media Player on the phone and CorePlayer Mobile.

---

I'm assuming you mean TCPMP. Have you tried setting video quality to "medium"? I have had some choppy-ness so it set it to medium. Video really didn't look degraded at all but playback improved noticeably.

[#5]

TCPMP, yes. I think I found the problem. DirectDraw video output is extremely slow. I read that the current ROM does not have proper drivers to use hardware acceleration. Now that's just ridiculous... Changing the video driver to raw framebuffer works all right.

[#6]

Hmm, I'll have to try that raw FB trick later.  I tried H.264 (encoded with x264) and had HORRIBLE results.

So far, I have had great results with MPEG-4 ASP video (320xWhateverisneededtopreserveaspectratio, constant quantizer 3) and Vorbis audio (80 kbit/sec for space savings) in an OGM container.  Vorbis in an AVI = breaks horribly, and Vorbis blows away MP3 at lower bitrates.

---

anonova wrote:

TCPMP, yes. I think I found the problem. DirectDraw video output is extremely slow. I read that the current ROM does not have proper drivers to use hardware acceleration. Now that's just ridiculous... Changing the video driver to raw framebuffer works all right.

---

[#7]

All.... in the upcoming version of CorePlayer Mobile v1.2 we have resolved the POOR video playback issues that the TILT users have experienced and I can say from first hand experience that the playback is pretty close to flawless ;-)

We are making an announcement at CES on Jan 7th on the released date of CorePlayer Mobile v1.2 that also includes advanced RTP/RTSP streaming and the much anticipated support for YouTube Mobile.

Message Edited by BetaBoy on 12-11-2007 12:31:30 AM

[#8]

betaboy, this is good news, when is it going to be available to the public?

[#9]

---

BetaBoy wrote:

All.... in the upcoming version of CorePlayer Mobile v1.2 we have resolved the POOR video playback issues that the TILT users have experienced and I can say from first hand experience that the playback is pretty close to flawless ;-)

We are making an announcement at CES on Jan 7th on the released date of CorePlayer Mobile v1.2 that also includes advanced RTP/RTSP streaming and the much anticipated support for YouTube Mobile.

Message Edited by BetaBoy on 12-11-2007 12:31:30 AM

---

Do you plan on releasing update drivers for the Tilt? Lack of driver support is what is causing poor video plackback on the tilt, not poor or insufficient software. I'm not trying to downplay your software or say it won't be good. The fact of the matter is that your playback software could be the best available, but it will still be bottlenecked by the drivers (or lack there of).

[#10]

I agree, I want to play  game emulators on it

but the Emulators won't run smoothly without the video drivers,

also taking photos and recording videos aren't smooth without the video drivers.

Since HTC say they won't develop any new video drivers for it I hope some third party  does.