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microsoft / FFmpegInterop

This is a code sample to make it easier to use FFmpeg in Windows applications.
Apache License 2.0
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Hevc/x265 freez sometimes in playback #76

Open ramtinak opened 8 years ago

ramtinak commented 8 years ago

Hi, I have change this commit: 02b3be1 but nothings changed.. when I tried to play a Hevc video sometimes freez and then play again. here is my video info:

Format : Matroska Format version : Version 2 File size : 242 MiB Duration : 41mn 40s Overall bit rate : 811 Kbps Encoded date : UTC Writing application : HandBrake 0.10.2 2015060900 Writing library : Lavf55.12.0

Video ID : 1 Format : HEVC Format/Info : High Efficiency Video Coding Format profile : Main@L3.1 Codec ID : V_MPEGH/ISO/HEVC Width : 1 280 pixels Height : 720 pixels Display aspect ratio : 16:9 Frame rate mode : Variable Original frame rate : 23.976 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Default : Yes Forced : No

Audio ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : HE-AAC / LC Codec ID : A_AAC Duration : 41mn 40s Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz / 24.0 KHz Compression mode : Lossy Delay relative to video : -105ms Title : Stereo Default : Yes Forced : No

here is the current video link: http://dl2.film2movie.biz/serial/The%20Flash/S02/The.Flash.S02E16.720p.x265.HEVC.Film2Movie_INFO.mkv

Thanks

reego-fr commented 8 years ago

Hi, does it freeze at a particular timestamp ?

ramtinak commented 8 years ago

Hi, thank you for reply yes, here examples time:(2,6,9,19 sec)

00:00:02 and 00:00:06 and 00:00:09 and 00:00:19

in MediaPlayerCS sample is freezing too. how can I fix this?

reego-fr commented 8 years ago

Hi, I wonder if "Sampling rate : 48.0 KHz / 24.0 KHz" can have something to do with the issue you encountered. I don't know what it means but I hope it is not L/R sample rate !

I experienced differently the playback this sample. It freezed, but only after showing people moving at lighting speed, all of them, and with uncompressed audio sample playback it plays well on my side. Can you try it again and report about any change ?

ramtinak commented 8 years ago

Hi again, I tested with Uncompressed audio sample too, still not working and still it's freezing

reego-fr commented 8 years ago

I find it strange you don't mention anything being better or worse with compressed vs. uncompressed audio samples playback. No offense, but I have to ask you again if you enabled "Force Decode Audio" during your tests.

I can confirm there is an issue within FFmpegInterop with he-aac audio when playing compressed samples, which is quite easy to fix actually.

On my side, using a windows 10 desktop, the file plays very fast with bad audio until something gives up a few seconds later and freezes. You might have less processing power than me and experienced it differently. What is your platform and how are x265 480p and 1080p playback on your side ?

ramtinak commented 8 years ago

Hi, sorry I forgot to tell you, when I force decode audio (using uncompressed), audio going to fast on blu-ray video. (so getting worse , but freezing still have!). when I disable this option and play this video, audio works well. Note: I set sample bitrate to 16 so I don't think it's because of this.

I have Windows 10 Pro x64 build 14342 on PC and Windows 10 Mobile build 10.0.14328.1000 on my phone.

On PC after few seconds will freezes but on phone each frame getting freezes and play. so I think there isn't on my side.

HEVC Blu-ray 1080,720 and 480p freezes

I think the issue is Blu-ray video, I played a WebDL 720p HEVC video, plays very well: http://onmkv.net/download-alt.php?id=YUhSMGNEb3ZMMVJ5WVdsdVltbDBMbU52YlM5bWFXeGxjeTh6TlRRek1qYzNPRGcwTDBGdVpISnZiaTR5TURFMUxqY3lNSEF1VjBWQ0xVUk1Mbmd5TmpVdVNFVldReTFQVGsxTFZpNXRhM1k=

and I played this video (HDTV 480 HEVC) and plays very well:

General

Format : Matroska Format version : Version 4 / Version 2 File size : 88.4 MiB Duration : 42mn 30s Overall bit rate : 291 Kbps Movie name : PSArips.com | Arrow.S03E22.SD.HDTV.2CH.x265.HEVC-PSA Encoded date : UTC 2015-05-07 04:51:07 Writing application : mkvmerge v7.8.0 ('River Man') 64bit built on Mar 27 2015 16:31:37 Writing library : libebml v1.3.1 + libmatroska v1.4.2 DURATION : 00:42:25.085000000 NUMBER_OF_FRAMES : 776 NUMBER_OF_BYTES : 22819 _STATISTICS_WRITING_APP : mkvmerge v7.8.0 ('River Man') 64bit built on Mar 27 2015 16:31:37 _STATISTICS_WRITING_DATE_UTC : 2015-05-07 04:51:07 _STATISTICS_TAGS : BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES

Video ID : 1 Format : HEVC Format/Info : High Efficiency Video Coding Format profile : Main@L3.0 Codec ID : V_MPEGH/ISO/HEVC Width : 720 pixels Height : 408 pixels Display aspect ratio : 16:9 Frame rate mode : Variable Original frame rate : 23.976 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Default : Yes Forced : No DURATION : 00:42:29.714000000 NUMBER_OF_FRAMES : 61132 NUMBER_OF_BYTES : 76799368 _STATISTICS_WRITING_APP : mkvmerge v7.8.0 ('River Man') 64bit built on Mar 27 2015 16:31:37 _STATISTICS_WRITING_DATE_UTC : 2015-05-07 04:51:07 _STATISTICS_TAGS : BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES

Audio ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : HE-AAC / LC Codec ID : A_AAC Duration : 42mn 30s Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz / 24.0 KHz Compression mode : Lossy Delay relative to video : -105ms Title : Stereo Default : Yes Forced : No DURATION : 00:42:30.101000000 NUMBER_OF_FRAMES : 59768 NUMBER_OF_BYTES : 15300609 _STATISTICS_WRITING_APP : mkvmerge v7.8.0 ('River Man') 64bit built on Mar 27 2015 16:31:37 _STATISTICS_WRITING_DATE_UTC : 2015-05-07 04:51:07 _STATISTICS_TAGS : BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES

Text ID : 3 Format : UTF-8 Codec ID : S_TEXT/UTF8 Codec ID/Info : UTF-8 Plain Text Default : Yes Forced : No

Here : http://up.hidiaries1.ir/download/305328/Arrow.S03E22.SD.HDTV.2CH.x265.HEVC.rar

reego-fr commented 8 years ago

Interesting. Does it mean he-aac decoder changed in build 14342 ? Back to your video issue, would you have a sample of freezing Bluray 480p video ?

reego-fr commented 8 years ago

Also, a sample of audio going too fast using uncompressed would be nice as there might be another issue here.

reego-fr commented 8 years ago

If we ignore the audio issues with he-aac, this is really a CPU issue. It might be possible to enable compressed h265 playback on preview builds though. I am not sure who would be able to confirm this. Maybe @timotiusmargo ?

khouzam commented 8 years ago

I can try this and see if h265 compressed is supported.

reego-fr commented 8 years ago

Thank you @khouzam Can you also compare compressed he-aac (v1) playback with sampling rate as it is and halved ?

khouzam commented 8 years ago

I'm finding out how to enable the compressed samples support on preview builds. I'm not seeing the freezing issue with the current preview builds. I'm wondering if this is the same as the seek freezing which has been fixed at the pipeline level.

reego-fr commented 8 years ago

Do you have details on the availability of the fix you mention ? Are older platforms included as well ?

The freezing and playing issue will occur when buffering is enabled and the cpu can't keep up with decoding samples at a decent rate. I didn't try 8k h265 but I am pretty sure there will be an issue with any cpu coming from earth, at least with single threaded decoding.