Kdenlive apparently exceeding the limits of H.264 standards
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Hi,
1) Why is Kdenlive apparently exceeding the limits of H.264 standards when encoding/rendering video? This is what my phone records (Samsung Galaxy S21/Samsung SM-G991B) (pre-installed video app): Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4 Format settings : CABAC / 1 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 1 frame Format settings, GOP : M=1, N=30 Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 8 s 105 ms Bit rate : 14.1 Mb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Kdenlive 22.12.3 MP4-H264/AAC preset with preset:veryfast (pre-installed preset): f=mp4 movflags=+faststart vcodec=libx264 crf=23 g=15 acodec=aac ab=160k channels=2 real_time=-1 preset=veryfast threads=0 Render result: Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L5.1 Format settings : CABAC / 16 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 16 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 15 s 349 ms Bit rate : 13.2 Mb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 29.970 (30000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.212 Stream size : 24.1 MiB (99%) Writing library : x264 core 163 Encoding settings : cabac=1 / ref=16 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=9 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=15 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc_lookahead=15 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 According to http://dev.beandog.org/x264_preset_reference.html for the veryfast preset bframes should be 3, but Kdenlive renders bframes=8, merange should be 16, but Kdenlive renders me_range=24, rc-lookahead should be 10, but Kdenlive renders rc_lookahead=15, ref should be 1, but Kdenlive renders 16 Ref Frames, subme should be 2, but Kdenlive renders subme=10, trellis should be 0, but Kdenlive renders trellis=2, weightp should be 1, but Kdenlive renders weightp=2. All this is giving me a headache because I want to make sure that my files are as compatible as possible on as many devices as possible. 2) Also, why is Kdenlive exporting in format profile High@L5.1, when the source video had format profile High@L4? It seems that this high profile from Kdenlive High@L5.1 is not supported on many devices. According to http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Profiles , High@L4 should be sufficient for 1920×1080 resolution. So why does Kdenlive not use this then? Thank you! 
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Hmm, all this is way too technical for me but kdenlive doesn't do the encoding - ffmpeg does
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Thank you! I found out that Kdenlive apparently used the settings from the "veryslow" preset: http://dev.beandog.org/x264_preset_reference.html . I could reproduce that with another file. I thought I had used the "veryfast" preset before, but maybe I was wrong. For future reference, here are my test results: Render settings: f=mp4 movflags=+faststart vcodec=libx264 crf=23 g=15 acodec=aac ab=160k channels=2 real_time=-1 preset=veryslow threads=0 Render results: Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L5.1 Format settings : CABAC / 16 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 16 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 6 s 974 ms Bit rate : 8 557 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 29.970 (30000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.138 Stream size : 7.11 MiB (98%) Writing library : x264 core 163 Encoding settings : cabac=1 / ref=16 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=9 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=15 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc_lookahead=15 / rc=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Codec configuration box : avcC Render settings: f=mp4 movflags=+faststart vcodec=libx264 crf=23 g=15 acodec=aac ab=160k channels=2 real_time=-1 preset=slower threads=0 Render results: Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L5 Format settings : CABAC / 8 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 8 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 6 s 974 ms Bit rate : 9 144 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 29.970 (30000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.147 Stream size : 7.60 MiB (98%) Writing library : x264 core 163 Encoding settings : cabac=1 / ref=8 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=9 / 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=9 / 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=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=15 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc_lookahead=15 / rc=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Codec configuration box : avcC Render settings: f=mp4 movflags=+faststart vcodec=libx264 crf=23 g=15 acodec=aac ab=160k channels=2 real_time=-1 preset=slow threads=0 Render results: Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L5 Format settings : CABAC / 5 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 5 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 6 s 974 ms Bit rate : 9 192 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 29.970 (30000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.148 Stream size : 7.64 MiB (98%) Writing library : x264 core 163 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=9 / 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=15 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc_lookahead=15 / rc=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Codec configuration box : avcC Render settings: f=mp4 movflags=+faststart vcodec=libx264 crf=23 g=15 acodec=aac ab=160k channels=2 real_time=-1 preset=medium threads=0 Render result: General Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 4 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 6 s 974 ms Bit rate : 9 275 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 29.970 (30000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.149 Stream size : 7.71 MiB (98%) Writing library : x264 core 163 Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=9 / 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=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=15 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc_lookahead=15 / rc=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Codec configuration box : avcC Render settings: f=mp4 movflags=+faststart vcodec=libx264 crf=23 g=15 acodec=aac ab=160k channels=2 real_time=-1 preset=fast threads=0 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 4 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 6 s 974 ms Bit rate : 9 591 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 29.970 (30000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.154 Stream size : 7.97 MiB (98%) Writing library : x264 core 163 Encoding settings : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=9 / 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=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=15 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc_lookahead=15 / rc=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Codec configuration box : avcC Render settings: f=mp4 movflags=+faststart vcodec=libx264 crf=23 g=15 acodec=aac ab=160k channels=2 real_time=-1 preset=faster threads=0 Render results: Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 4 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 6 s 974 ms Bit rate : 9 444 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 29.970 (30000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.152 Stream size : 7.85 MiB (98%) Writing library : x264 core 163 Encoding settings : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=4 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=9 / lookahead_threads=2 / 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=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=15 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc_lookahead=15 / rc=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Codec configuration box : avcC Render settings: f=mp4 movflags=+faststart vcodec=libx264 crf=23 g=15 acodec=aac ab=160k channels=2 real_time=-1 preset=veryfast threads=0 Render results: General Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 4 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 6 s 974 ms Bit rate : 8 738 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 29.970 (30000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.141 Stream size : 7.26 MiB (98%) Writing library : x264 core 163 Encoding settings : cabac=1 / ref=1 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=2 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=9 / lookahead_threads=3 / 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=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=15 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc_lookahead=10 / rc=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Codec configuration box : avcC Render settings: f=mp4 movflags=+faststart vcodec=libx264 crf=23 g=15 acodec=aac ab=160k channels=2 real_time=-1 preset=superfast threads=0 Render results: Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 4 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 6 s 974 ms Bit rate : 11.0 Mb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 29.970 (30000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.177 Stream size : 9.15 MiB (98%) Writing library : x264 core 163 Encoding settings : cabac=1 / ref=1 / deblock=1:0:0 / analyse=0x3:0x3 / me=dia / subme=1 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=9 / 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=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=15 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc=crf / mbtree=0 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00 Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Codec configuration box : avcC Render settings: f=mp4 movflags=+faststart vcodec=libx264 crf=23 g=15 acodec=aac ab=160k channels=2 real_time=-1 preset=ultrafast threads=0 Render results: Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : Constrained Baseline@L4 Format settings : 1 Ref Frames Format settings, CABAC : No Format settings, Reference frames : 1 frame Format settings, GOP : M=1, N=15 Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 6 s 974 ms Bit rate : 18.3 Mb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 29.970 (30000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.294 Stream size : 15.2 MiB (99%) Writing library : x264 core 163 Encoding settings : cabac=0 / ref=1 / deblock=0:0:0 / analyse=0:0 / me=dia / subme=0 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=9 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=0 / weightp=0 / keyint=15 / keyint_min=1 / scenecut=0 / intra_refresh=0 / rc=crf / mbtree=0 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=0 Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Codec configuration box : avcC |
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I was surprised, though, to see, that the format profiles also changed with the presets. I didn't know there was a connection between these two settings: preset=veryslow Format profile: High@L5.1 preset=slower Format profile: High@L5 preset=slow Format profile: High@L5 preset=medium Format profile: High@L4 preset=fast Format profile: High@L4 preset=faster Format profile: High@L4 preset=veryfast Format profile: High@L4 preset=superfast Format profile: High@L4 preset=ultrafast Format profile: Constrained Baseline@L4 |
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This confirms my experiment:
Source: hello_hello 28th December 2018, 18:35 http://forum.doom9.org/archive/index.php/t-175971.html |
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May i ask where your question is coming from?
I have delivered footage to television (transmitted  ), and got compliments about the (specially for them rendered) very high quality (both view as sound) of that particular video.I only rendered it (HQ master footage) at one of the kdenlive's high quality setting. Furthermore never confronted any questionable quality in the many projects i did. I always reach the quality that i want, no matter if i want high or low for the moment. It's all possible in kdenlive. I didn't ask myself for the technical aspects. The video was of that high quality rates that i (totally amateur) received compliments from the pro's who could simply use it, that good.  Yes, sometimes kdenlive alters some stuff while importing. But that was for me 1/ never a problem in the end result and 2/ can be overcome by executing/starting the project at appropriate wanted/needed rates. So i ask myself why should such technical aspects be so important? Dig into project rendering options i would say, and render at the wanted question. As i think kdenlive can fulfill all. Why i ask where your question is coming from? Why or for what was the result 'no good'? Can you perhaps be more specific on that? |
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Of course! I'd love to! 😊 Congratulations on your successful TV productions! 🥳 I actually had no idea about the render details either, and hadn't bothered with them for years. I've always liked to edit private videos and semi-professionally sometimes, but even then I was never interested in the settings, I always left everything in the original settings. Then, a long time ago, I received a video that I wanted to play on an older Samsung TV, and it didn't work because the codec was not supported, even though it was H.264/MP4. On a brand-new Samsung TV, however, everything ran without problems. I was curious to find out what the problem could be and read up on the subject out of interest, so that I wouldn't have such a compatibility problem with my videos. Then I noticed that my mobile phone outputs “1 Ref Frames” and Kdenlive “4 Ref Frames” and then I read that “Format profile : High@L4” is also supported by older devices. This is also what Kdenlive outputs in the default settings. Obviously, I had only adjusted something once (by accident), hence my question here. Basically, I wouldn't change anything in the settings, I just wanted to test what Kdenlive outputs by default to make sure that the videos are as compatible as possible. That would be all. I hope I was able to help you a little. 😄 |
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Thanks for your clear explanation.
Isn't the (old) TV reaching it's limits? Is it really the H.264? Our TV also does sometimes. A full movie in Full-HD (from laptop with hdmi) doens't play that super either or gives fail messages, although our tv is Full-HD and should play that easy. And big movies from usb also sometimes has minor problems, as the usb isn't fast enough i guess. So again, is it really the H.264 or the age of the TV? And see how big your file is. If you render at the most highest qualities then you need good hardware to get it played. A HD movie in high quality my TV also can't handle, while a HD in general quality easily. Difference then is that high quality rendering file is easily 3-4 time bigger in data then a general quality, so 3-4 time more speed needed to handle it. And you could re-render that failing movie to see if it works then. Perhaps it's made with bad software? Failures in it your TV crashes on? Test it i should say. Play exact the same rendering on a computer to look if it is good. If it's good in that case, then the prob is not in the H.264 (but in the TV, or in to HQ rendering). Me personally never confronted H.264 limitations, or only in the player hardware specs or setup (cable connections speeds and such). To be honest, i guess it will turn out it's the age of the TV. Digital evolution goes very hard, so a say 5yo TV quickly is 'to old'. At the end. H.264 is getting accepted more and more nowadays. Even becomming slightly standard for many brands of hardware. Same as OGG and FLAC get more standard nowadays. Minor correction to be made: Looks like H.265 is going to be the more practical used follow-up. Did this answer your questions or gave you good thoughts direction? If not simply say it. |
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