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4th June 2019, 13:35 | #1 | Link |
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4K TV cannot play 4K H.264
Hi,
If I re-encode 4K video in ffmpeg with default settings to H.264 it plays fine on several 4K TVs. When I encode 4K video H.264 in my app using ffmpeg on C/C++ this 4K video doesn't play on 4K TVs (LG, Sony, Samsung). I can't see any significant difference between video files in parameters: https://www.dropbox.com/s/situh0d6kh...video.zip?dl=0 Problem video on 4K TVs: Code:
General Complete name : D:\2\4K-TV-test\forum\testvideo\Problem-on-4K-TV.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom (isom/iso2/avc1/mp41) File size : 20.8 MiB Duration : 28 s 29 ms Overall bit rate : 6 214 kb/s Writing application : Lavf58.20.100 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L5.2 Format settings, CABAC : Yes Format settings, RefFrames : 5 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 28 s 29 ms Duration_LastFrame : 17 ms Bit rate : 5 959 kb/s Nominal bit rate : 13.0 Mb/s Width : 3 840 pixels Height : 2 160 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 59.940 (59940/1000) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.012 Stream size : 19.9 MiB (96%) Writing library : x264 core 157 r2935 545de2f Encoding settings : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=6 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=abr / mbtree=1 / bitrate=13000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Audio ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 27 s 29 ms Bit rate mode : Constant Bit rate : 256 kb/s Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 44.1 kHz Frame rate : 43.066 FPS (1024 SPF) Compression mode : Lossy Stream size : 846 KiB (4%) Default : Yes Alternate group : 1 Code:
General Complete name : D:\2\4K-TV-test\forum\testvideo\ffmpeg-OK-on-4K-TV.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom (isom/iso2/avc1/mp41) File size : 40.0 MiB Duration : 28 s 12 ms Overall bit rate : 12.0 Mb/s Writing application : Lavf58.20.100 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L5.2 Format settings, CABAC : Yes Format settings, RefFrames : 5 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 28 s 12 ms Bit rate : 11.9 Mb/s Nominal bit rate : 13.0 Mb/s Width : 3 840 pixels Height : 2 160 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 59.940 (59940/1000) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.024 Stream size : 39.6 MiB (99%) Writing library : x264 core 157 r2935 545de2f Encoding settings : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=6 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=abr / mbtree=1 / bitrate=13000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Audio ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 27 s 52 ms Bit rate mode : Constant Bit rate : 129 kb/s Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 44.1 kHz Frame rate : 43.066 FPS (1024 SPF) Compression mode : Lossy Stream size : 425 KiB (1%) Default : Yes Alternate group : 1 |
4th June 2019, 14:10 | #2 | Link |
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This is your answer. I think that the HW decoder just doesn't support 60fps. What is the model name of the tv?
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4th June 2019, 14:27 | #3 | Link | ||
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Quote:
Quote:
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4th June 2019, 15:07 | #5 | Link |
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Both videos were encoded with libx264.
Speaking 60p I meant 59.94p. I encode video using ffmpeg C/C++ LibAV library. 3840 x 2160 59.94p If I use NVENC encoder it plays fine on 4K TV. If I use libx264 with same settings, 4K video doesn't play on 4K TV. However all sw players (VLC, etc) play fine this video. Why you think that 59.94p is incorrect? I saw many video files with these parameters. I didn't check true 60p video yet. |
4th June 2019, 15:09 | #6 | Link |
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In PotPlayer "ok" is shown as 59.94fps and "problem" as 59.905fps. I would try to remux the file and see if it helps. And test also without audio, just to be sure.
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4th June 2019, 15:59 | #7 | Link |
Life's clearer in 4K UHD
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If you de-mux the video and audio streams to elementary streams and re-mux them to either, MP4, M2TS or MKV you'll find that MediaInfo reports the video stream runs 119.880 FPS!
EDIT: I forgot to mention that my LG 65UH770V is unable to play any of your provided files...
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Last edited by SeeMoreDigital; 4th June 2019 at 16:11. |
4th June 2019, 21:44 | #8 | Link |
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Maybe it's something about the timings/timescale.
Try: Code:
ffmpeg -i Problem-on-4K-TV.mp4 -c copy -bsf:v "h264_metadata=tick_rate=120000/1001:fixed_frame_rate_flag=1" -video_track_timescale 60000 "output.mp4" Code:
ffmpeg -i Problem-on-4K-TV.mp4 -map 0 -c copy -to 00:27 "to27.mp4" Last edited by sneaker_ger; 4th June 2019 at 22:04. |
5th June 2019, 03:31 | #9 | Link | |
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Quote:
your files are not at the correct 59p fps which is 60000/1001 and not 59.940 (59940/1000) which is simply not the same. i think is unlikely but an internal media player in a Tv may reject bad to this they are at best unreliable anyway. |
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h.264 |
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