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HEVC codec videos
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Dave Farrance
Jul 4, 2015, 5:32:10 AM7/4/15
to
It seems that videos on the web sometimes use the HEVC (h.265) codec
now. I've tested HEVC videos on the OSMC media player on the Pi1, but
playback is poor. Would somebody with the Pi2 test these videos please?
With OSMC on the Pi1, the HEVC codec is evidently present because it
tries to play the videos, but at 480p there is stuttering and at 720p it
slows down to just a few frames per second. I understand that the Pi2
has the same GPU, but the HEVC decoding is probably CPU dependent, in
which case, the Pi2 should be better. Videos transcoded with FFMPEG:
HEVC video 480p 33s 1.5MB
https://drive.google.com/uc?export=download&id=0ByhC8qHF7zLPalRmVGNFTHI0QW8
HEVC video 720p 33s 2.2MB
https://drive.google.com/uc?export=download&id=0ByhC8qHF7zLPTk0yTy1FQUIyVkk
now. I've tested HEVC videos on the OSMC media player on the Pi1, but
playback is poor. Would somebody with the Pi2 test these videos please?
With OSMC on the Pi1, the HEVC codec is evidently present because it
tries to play the videos, but at 480p there is stuttering and at 720p it
slows down to just a few frames per second. I understand that the Pi2
has the same GPU, but the HEVC decoding is probably CPU dependent, in
which case, the Pi2 should be better. Videos transcoded with FFMPEG:
HEVC video 480p 33s 1.5MB
https://drive.google.com/uc?export=download&id=0ByhC8qHF7zLPalRmVGNFTHI0QW8
HEVC video 720p 33s 2.2MB
https://drive.google.com/uc?export=download&id=0ByhC8qHF7zLPTk0yTy1FQUIyVkk
David J. Ruck
Jul 4, 2015, 12:42:03 PM7/4/15
to
On 4 Jul 2015 Dave Farrance <DaveFa...@OMiTTHiSyahooANDTHiS.co.uk>
wrote:
> It seems that videos on the web sometimes use the HEVC (h.265) codec
> now. I've tested HEVC videos on the OSMC media player on the Pi1, but
> playback is poor. Would somebody with the Pi2 test these videos please?
> With OSMC on the Pi1, the HEVC codec is evidently present because it
> tries to play the videos, but at 480p there is stuttering and at 720p it
> slows down to just a few frames per second. I understand that the Pi2
> has the same GPU, but the HEVC decoding is probably CPU dependent, in
> which case, the Pi2 should be better. Videos transcoded with FFMPEG:
Note quite the same setup; but on an over clocked 900/450/450
Raspberry Pi 2 running Rasbian Jessie and with Gnome MPlayer: the 480p
runs fine (although there is a little bit of wobble in the audio, but
I've only just got that working). The 720p is dropping a couple of
frames in places, but is still watcbable. It is working all 4 cores
pretty hard.
---druck
--
The ARM Club Free Software - http://www.armclub.org.uk/free/
32 bit Conversions Page - http://www.armclub.org.uk/32bit/
wrote:
> It seems that videos on the web sometimes use the HEVC (h.265) codec
> now. I've tested HEVC videos on the OSMC media player on the Pi1, but
> playback is poor. Would somebody with the Pi2 test these videos please?
> With OSMC on the Pi1, the HEVC codec is evidently present because it
> tries to play the videos, but at 480p there is stuttering and at 720p it
> slows down to just a few frames per second. I understand that the Pi2
> has the same GPU, but the HEVC decoding is probably CPU dependent, in
> which case, the Pi2 should be better. Videos transcoded with FFMPEG:
Raspberry Pi 2 running Rasbian Jessie and with Gnome MPlayer: the 480p
runs fine (although there is a little bit of wobble in the audio, but
I've only just got that working). The 720p is dropping a couple of
frames in places, but is still watcbable. It is working all 4 cores
pretty hard.
---druck
--
The ARM Club Free Software - http://www.armclub.org.uk/free/
32 bit Conversions Page - http://www.armclub.org.uk/32bit/
Dave Farrance
Jul 4, 2015, 2:23:38 PM7/4/15
to
"David J. Ruck" <ne...@druck.org.uk> wrote:
>On 4 Jul 2015 Dave Farrance <DaveFa...@OMiTTHiSyahooANDTHiS.co.uk>
>wrote:
>
>> It seems that videos on the web sometimes use the HEVC (h.265) codec
>> now. I've tested HEVC videos on the OSMC media player on the Pi1, but
>> playback is poor. Would somebody with the Pi2 test these videos please?
>
>> With OSMC on the Pi1, the HEVC codec is evidently present because it
>> tries to play the videos, but at 480p there is stuttering and at 720p it
>> slows down to just a few frames per second. I understand that the Pi2
>> has the same GPU, but the HEVC decoding is probably CPU dependent, in
>> which case, the Pi2 should be better. Videos transcoded with FFMPEG:
>
>Note quite the same setup; but on an over clocked 900/450/450
>Raspberry Pi 2 running Rasbian Jessie and with Gnome MPlayer: the 480p
>runs fine (although there is a little bit of wobble in the audio, but
>I've only just got that working). The 720p is dropping a couple of
>frames in places, but is still watcbable. It is working all 4 cores
>pretty hard.
OK, thanks. I'm surprised that you were able to run that with mplayer
>On 4 Jul 2015 Dave Farrance <DaveFa...@OMiTTHiSyahooANDTHiS.co.uk>
>wrote:
>
>> It seems that videos on the web sometimes use the HEVC (h.265) codec
>> now. I've tested HEVC videos on the OSMC media player on the Pi1, but
>> playback is poor. Would somebody with the Pi2 test these videos please?
>
>> With OSMC on the Pi1, the HEVC codec is evidently present because it
>> tries to play the videos, but at 480p there is stuttering and at 720p it
>> slows down to just a few frames per second. I understand that the Pi2
>> has the same GPU, but the HEVC decoding is probably CPU dependent, in
>> which case, the Pi2 should be better. Videos transcoded with FFMPEG:
>
>Note quite the same setup; but on an over clocked 900/450/450
>Raspberry Pi 2 running Rasbian Jessie and with Gnome MPlayer: the 480p
>runs fine (although there is a little bit of wobble in the audio, but
>I've only just got that working). The 720p is dropping a couple of
>frames in places, but is still watcbable. It is working all 4 cores
>pretty hard.
at all on the Pi. I understood that the mplayer for the Pi didn't have
any hardware acceleration and was incapable of playing, say, 1080p h.264
video as a result. I hadn't heard that the situation had changed. OSMC,
on the other hand, does have hardware acceleration, and has no problems
with 1080p h.264 video.
druck
Jul 4, 2015, 7:23:32 PM7/4/15
to
On 04/07/2015 19:23, Dave Farrance wrote:> OK, thanks. I'm surprised
noobs card for the Pi2, but couldn't seem to get it do anything useful.
I do have a Pi2 image of Kodi, which I can try out, I assume that will
have the acceleration.
---druck
that you were able to run that with mplayer
> at all on the Pi. I understood that the mplayer for the Pi didn't
> have any hardware acceleration and was incapable of playing, say,
> 1080p h.264 video as a result. I hadn't heard that the situation had
> changed. OSMC, on the other hand, does have hardware acceleration,
> and has no problems with 1080p h.264 video.
I've not managed to get anywhere with OSMC, I tried it when I burnt a
> at all on the Pi. I understood that the mplayer for the Pi didn't
> have any hardware acceleration and was incapable of playing, say,
> 1080p h.264 video as a result. I hadn't heard that the situation had
> changed. OSMC, on the other hand, does have hardware acceleration,
> and has no problems with 1080p h.264 video.
noobs card for the Pi2, but couldn't seem to get it do anything useful.
I do have a Pi2 image of Kodi, which I can try out, I assume that will
have the acceleration.
---druck
Dom
Jul 5, 2015, 12:19:54 AM7/5/15
to
playback of video without the hardware acceleration. Each of the four
cores of the Pi 2B CPU are more powerful than the single core in the Pi
1 series and together can, as has been shown above, just about cope with
HD video in software alone.
There is no hardware decoder for h.265 on any Pi.
Rob
Jul 5, 2015, 2:06:06 AM7/5/15
to
druck <ne...@druck.org.uk> wrote:
> On 04/07/2015 19:23, Dave Farrance wrote:> OK, thanks. I'm surprised
> that you were able to run that with mplayer
>> at all on the Pi. I understood that the mplayer for the Pi didn't
>> have any hardware acceleration and was incapable of playing, say,
>> 1080p h.264 video as a result. I hadn't heard that the situation had
>> changed. OSMC, on the other hand, does have hardware acceleration,
>> and has no problems with 1080p h.264 video.
>
> I've not managed to get anywhere with OSMC, I tried it when I burnt a
> noobs card for the Pi2, but couldn't seem to get it do anything useful.
There is a selfcontained image for OSMC that you just copy to a card
> On 04/07/2015 19:23, Dave Farrance wrote:> OK, thanks. I'm surprised
> that you were able to run that with mplayer
>> at all on the Pi. I understood that the mplayer for the Pi didn't
>> have any hardware acceleration and was incapable of playing, say,
>> 1080p h.264 video as a result. I hadn't heard that the situation had
>> changed. OSMC, on the other hand, does have hardware acceleration,
>> and has no problems with 1080p h.264 video.
>
> I've not managed to get anywhere with OSMC, I tried it when I burnt a
> noobs card for the Pi2, but couldn't seem to get it do anything useful.
and it works.
(it installs itself when you first boot it)
Dave Farrance
Jul 5, 2015, 1:56:09 PM7/5/15
to
Dom <dom...@blueyonder.co.uk> wrote:
>The original Pi A/B/A+/B+ were too underpowered to cope with any decent
>playback of video without the hardware acceleration. Each of the four
>cores of the Pi 2B CPU are more powerful than the single core in the Pi
>1 series and together can, as has been shown above, just about cope with
>HD video in software alone.
>
>There is no hardware decoder for h.265 on any Pi.
The AVC (h.264) decoder certainly makes AVC the codec of choice for use
>The original Pi A/B/A+/B+ were too underpowered to cope with any decent
>playback of video without the hardware acceleration. Each of the four
>cores of the Pi 2B CPU are more powerful than the single core in the Pi
>1 series and together can, as has been shown above, just about cope with
>HD video in software alone.
>
>There is no hardware decoder for h.265 on any Pi.
with the Pi, but the rescaling of the video for output to the screen is
also a significant overhead that can be offloaded to the GPU if the
necessary driver is present.
Thus, for example, OSMC on the Pi1 can play a 480p VP8-codec video with
no problems even though it can't decode VP8 in hardware, but Mplayer on
Raspbian goes dead slow because it has no GPU driver.
VP8 video 480p 33s 4.3MB
https://drive.google.com/uc?export=download&id=0ByhC8qHF7zLPNlFQc1FNcjRlZlE
So I was wondering if OSMC on the Pi2 might be able to handle HD without
hardware-decoding because of the extra CPU power and the GPU driver to
handle the output-rescaling.
druck
Jul 13, 2015, 5:53:20 PM7/13/15
to
On 05/07/2015 07:06, Rob wrote:
keyboard connected this time - the mouse support is atrocious! Not keen
on the interface in other respects either, so it looks like I'll be
sticking with OpenElec for some time to come.
But in any case both OSMC and OpenElec play the H265 videos with
acceleration, the 480p perfectly, the 720p with only a slight stutter in
the initial zooming shot. In both cases the sound is played correctly
unlike with the unaccelarated mPlayer, which garbles.
I am surprised there isn't a much greater difference in the video with
acceleration though.
---druck
> druck <ne...@druck.org.uk> wrote:
>> I've not managed to get anywhere with OSMC, I tried it when I burnt a
>> noobs card for the Pi2, but couldn't seem to get it do anything useful.
>
> There is a selfcontained image for OSMC that you just copy to a card
> and it works.
> (it installs itself when you first boot it)
>
Got a bit further with the first release version because I had a
>> I've not managed to get anywhere with OSMC, I tried it when I burnt a
>> noobs card for the Pi2, but couldn't seem to get it do anything useful.
>
> There is a selfcontained image for OSMC that you just copy to a card
> and it works.
> (it installs itself when you first boot it)
>
keyboard connected this time - the mouse support is atrocious! Not keen
on the interface in other respects either, so it looks like I'll be
sticking with OpenElec for some time to come.
But in any case both OSMC and OpenElec play the H265 videos with
acceleration, the 480p perfectly, the 720p with only a slight stutter in
the initial zooming shot. In both cases the sound is played correctly
unlike with the unaccelarated mPlayer, which garbles.
I am surprised there isn't a much greater difference in the video with
acceleration though.
---druck
Dave Farrance
Jul 14, 2015, 5:17:06 AM7/14/15
to
Dave Farrance
Jul 14, 2015, 5:34:20 AM7/14/15
to
druck <ne...@druck.org.uk> wrote:
>Got a bit further with the first release version because I had a
>keyboard connected this time - the mouse support is atrocious! Not keen
>on the interface in other respects either, so it looks like I'll be
>sticking with OpenElec for some time to come.
>
>But in any case both OSMC and OpenElec play the H265 videos with
>acceleration, the 480p perfectly, the 720p with only a slight stutter in
>the initial zooming shot. In both cases the sound is played correctly
>unlike with the unaccelarated mPlayer, which garbles.
>
>I am surprised there isn't a much greater difference in the video with
>acceleration though.
OK, thanks. Most of the HEVC videos that I've seen on the net were HD,
>Got a bit further with the first release version because I had a
>keyboard connected this time - the mouse support is atrocious! Not keen
>on the interface in other respects either, so it looks like I'll be
>sticking with OpenElec for some time to come.
>
>But in any case both OSMC and OpenElec play the H265 videos with
>acceleration, the 480p perfectly, the 720p with only a slight stutter in
>the initial zooming shot. In both cases the sound is played correctly
>unlike with the unaccelarated mPlayer, which garbles.
>
>I am surprised there isn't a much greater difference in the video with
>acceleration though.
so it looks like the Pi2 isn't quite there yet. Maybe there's room to
improve the codec a bit. AVC software codecs improved with time, so
maybe HEVC will too.
I don't like the default OSMC skin either, so I've switched it to the
Kodi default "Confluence", although I'm told there are better skins, but
yes, that seems to speed up the responsiveness. I prefer OSMC for Kodi
because like Raspbmc, it still seems to be Debian based, and there are a
few configuration changes that I like to make to the underlying OS.
In the absence of a hardware HEVC decoder, the acceleration only handles
the final rescaling and "blitting" to the screen, so the speedup would
be less than AVC's speedup.
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