Re: [FFmpeg-user] libaom - first frame not lossless when > 7 frames in source
Am Sa., 6. Juni 2020 um 21:05 Uhr schrieb Kieran O Leary : > I was doing some tests with libaom and lossness encoding and with synthetic > files and some real world files, I kept finding that the framemd5s for the > first frame was different than the source, but every other libaom encoded > frame produced matching framemd5s for source and output. > I then tried with smaller frame counts, and with synthetic files, I found > that all frames would produce matching framemd5s when there was between 1 > and 7 frames in the input. Once you went to 8 frames and above, the first > frame would produce a framemd5 mismatch. Should be fixed, work-around was to set qmax to 0. Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] libaom - first frame not lossless when > 7 frames in source
On Sun, Jun 7, 2020 at 10:08 PM Kieran O Leary wrote: > > > On Sun, Jun 7, 2020 at 10:06 PM pdr0 wrote: > >> Intra only compression , using -g 1 makes it lossless . Maybe a clue there >> > > Aye - I can confirm that -g 1 produces matching framemd5s. > Just checking in on this issue - any ideas? Should I raise a bug ticket as the next step or is this thread enough? K > ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] libaom - first frame not lossless when > 7 frames in source
On Sun, Jun 7, 2020 at 10:06 PM pdr0 wrote: > Intra only compression , using -g 1 makes it lossless . Maybe a clue there > Aye - I can confirm that -g 1 produces matching framemd5s. K ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] libaom - first frame not lossless when > 7 frames in source
Intra only compression , using -g 1 makes it lossless . Maybe a clue there Not sure why there is a discrepancy between aomenc, and ffmpeg libaom-av1 -- Sent from: http://www.ffmpeg-archive.org/ ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] libaom - first frame not lossless when > 7 frames in source
Hi Carl, On Sun, Jun 7, 2020 at 9:18 PM Carl Eugen Hoyos wrote: > Am So., 7. Juni 2020 um 19:16 Uhr schrieb Kieran O Leary > : > > > On Sun 7 Jun 2020, 17:56 pdr0, wrote: > > > > > Kieran O Leary wrote > > > > Any idea what's happening? Will I get the libx264-style answer: > 'this is > > > > googles issue, > > > > > > I can replicate the ffmpeg issue (and with other sources), but I don't > know > > > what the problem is > > > > > > It's not a "google" issue, because AOM aomenc.exe works, and produces > > > lossless output correctly > > > > > > > This is great to know! I wonder if the number 8 is significant here? > > Could it be the number of cores in your system / is the issue reproducible > with -threads 1 ? > I'm on a 4 core i5, and -threads 1 didn't have any difference - first frame has different framemd5s to the source: $ ./ffmpeg -threads 1 -i ~/source.mkv -c:v av1 -crf 0 av1.mkv ffmpeg version N-98060-g1c32d7d Copyright (c) 2000-2020 the FFmpeg developers built with gcc 9 (Ubuntu 9.3.0-10ubuntu2) configuration: --prefix=/home/kieranjol/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/kieranjol/ffmpeg_build/include --extra-ldflags=-L/home/kieranjol/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/home/kieranjol/bin --enable-libaom libavutil 56. 50.100 / 56. 50.100 libavcodec 58. 90.100 / 58. 90.100 libavformat58. 44.100 / 58. 44.100 libavdevice58. 9.103 / 58. 9.103 libavfilter 7. 84.100 / 7. 84.100 libswscale 5. 6.101 / 5. 6.101 libswresample 3. 6.100 / 3. 6.100 Input #0, matroska,webm, from '/home/kieranjol/source.mkv': Metadata: ENCODER : Lavf58.29.100 Duration: 00:00:01.00, start: 0.00, bitrate: 43022 kb/s Stream #0:0: Video: v210 (v210 / 0x30313276), yuv422p10le, 320x240, SAR 1:1 DAR 4:3, 25 fps, 25 tbr, 1k tbn, 1k tbc (default) Metadata: ENCODER : Lavc58.54.100 v210 DURATION: 00:00:01.0 File 'av1.mkv' already exists. Overwrite? [y/N] y Stream mapping: Stream #0:0 -> #0:0 (v210 (native) -> av1 (libaom-av1)) Press [q] to stop, [?] for help [libaom-av1 @ 0x563f62937900] v2.0.0 Output #0, matroska, to 'av1.mkv': Metadata: encoder : Lavf58.44.100 Stream #0:0: Video: av1 (libaom-av1) (AV01 / 0x31305641), yuv422p10le, 320x240 [SAR 1:1 DAR 4:3], q=-1--1, 25 fps, 1k tbn, 25 tbc (default) Metadata: DURATION: 00:00:01.0 encoder : Lavc58.90.100 libaom-av1 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A frame= 20 fps= 11 q=0.0 size= 1kB time=00:00:00.04 bitrate= 106.7kbits/sframe= 21 fps=6.9 q=0.0 size= 1kB time=00:00:00.08 bitrate= 54.0kbits/sframe= 25 fps=4.8 q=0.0 Lsize= 68kB time=00:00:00.96 bitrate= 579.1kbits/s speed=0.185x video:67kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.026751% kieranjol@POWERVIRUS:~/ffmpeg_sources/ffmpeg$ ./ffmpeg -threads 1 -i av1.mkv -f framemd5 - ffmpeg version N-98060-g1c32d7d Copyright (c) 2000-2020 the FFmpeg developers built with gcc 9 (Ubuntu 9.3.0-10ubuntu2) configuration: --prefix=/home/kieranjol/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/kieranjol/ffmpeg_build/include --extra-ldflags=-L/home/kieranjol/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/home/kieranjol/bin --enable-libaom libavutil 56. 50.100 / 56. 50.100 libavcodec 58. 90.100 / 58. 90.100 libavformat58. 44.100 / 58. 44.100 libavdevice58. 9.103 / 58. 9.103 libavfilter 7. 84.100 / 7. 84.100 libswscale 5. 6.101 / 5. 6.101 libswresample 3. 6.100 / 3. 6.100 [libaom-av1 @ 0x55f041f33880] v2.0.0 Input #0, matroska,webm, from 'av1.mkv': Metadata: ENCODER : Lavf58.44.100 Duration: 00:00:01.00, start: 0.00, bitrate: 556 kb/s Stream #0:0: Video: av1 (Professional), yuv422p10le(tv), 320x240, SAR 1:1 DAR 4:3, 25 fps, 25 tbr, 1k tbn, 1k tbc (default) Metadata: ENCODER : Lavc58.90.100 libaom-av1 DURATION: 00:00:01.0 [libaom-av1 @ 0x55f041f41800] v2.0.0 Stream mapping: Stream #0:0 -> #0:0 (av1 (libaom-av1) -> rawvideo (native)) Press [q] to stop, [?] for help #format: frame checksums #version: 2 #hash: MD5 #software: Lavf58.44.100 #tb 0: 1/25 #media_type 0: video #codec_id 0: rawvideo #dimensions 0: 320x240 #sar 0: 1/1 #stream#, dts,pts, duration, size, hash Output #0, framemd5, to 'pipe:': Metadata: encoder : Lavf58.44.100 Stream #0:0: Video: rawvideo (Y3[10][10] / 0xA0A3359), yuv422p10le, 320x240 [SAR 1:1 DAR 4:3], q=2-31, 38400 kb/s, 25 fps, 25 tbn, 25 tbc (default) Metadata: DURATION: 00:00:01.0 encoder : Lavc58.90.100 rawvideo 0, 0, 0,1, 307200, 82afca7a233d492b3be65f53e97883e0 0, 1, 1,1, 307200, 8213a857506c099160fffb2f606f3590 0, 2,
Re: [FFmpeg-user] libaom - first frame not lossless when > 7 frames in source
Carl Eugen Hoyos-2 wrote > Could it be the number of cores in your system / is the issue reproducible > with -threads 1 ? Issue is still present with -threads 1 Does not appear to be related to pixel format (eg. affects yuv420p source test as well) -- Sent from: http://www.ffmpeg-archive.org/ ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] libaom - first frame not lossless when > 7 frames in source
Am So., 7. Juni 2020 um 19:16 Uhr schrieb Kieran O Leary : > On Sun 7 Jun 2020, 17:56 pdr0, wrote: > > > Kieran O Leary wrote > > > Any idea what's happening? Will I get the libx264-style answer: 'this is > > > googles issue, > > > > I can replicate the ffmpeg issue (and with other sources), but I don't know > > what the problem is > > > > It's not a "google" issue, because AOM aomenc.exe works, and produces > > lossless output correctly > > > > This is great to know! I wonder if the number 8 is significant here? Could it be the number of cores in your system / is the issue reproducible with -threads 1 ? Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] libaom - first frame not lossless when > 7 frames in source
Hi On Sun 7 Jun 2020, 17:56 pdr0, wrote: > Kieran O Leary wrote > > Any idea what's happening? Will I get the libx264-style answer: 'this is > > googles issue, > > I can replicate the ffmpeg issue (and with other sources), but I don't know > what the problem is > > It's not a "google" issue, because AOM aomenc.exe works, and produces > lossless output correctly > This is great to know! I wonder if the number 8 is significant here? K ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] libaom - first frame not lossless when > 7 frames in source
Kieran O Leary wrote > Any idea what's happening? Will I get the libx264-style answer: 'this is > googles issue, I can replicate the ffmpeg issue (and with other sources), but I don't know what the problem is It's not a "google" issue, because AOM aomenc.exe works, and produces lossless output correctly -- Sent from: http://www.ffmpeg-archive.org/ ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-user] libaom - first frame not lossless when > 7 frames in source
Hi, I was doing some tests with libaom and lossness encoding and with synthetic files and some real world files, I kept finding that the framemd5s for the first frame was different than the source, but every other libaom encoded frame produced matching framemd5s for source and output. I then tried with smaller frame counts, and with synthetic files, I found that all frames would produce matching framemd5s when there was between 1 and 7 frames in the input. Once you went to 8 frames and above, the first frame would produce a framemd5 mismatch. here's a bunch of commands using ffmpeg git-master and what I assume to be libaom git master, or whatever the Ubuntu ffmpeg compilation wiki is using: 0) framemd5 output of the 8fr source - note the first frame value 1) Make a 8frame v210 via testsrc 2) Turn into av1 with -crf 0 3) get framemd5 of av1 output - note that first framemd5 value is different 4-6 - same as 1 to 3 but with a 7 frame testsrc file Any idea what's happening? Will I get the libx264-style answer: 'this is googles issue, not ffmpeg'0b1ae3e77528dcdacfab21761076d2b0b1ae3e77528dcdacfab21761076d2b /ffmpeg -i 8fr.mkv -f framemd5 - ffmpeg version N-98060-g1c32d7d Copyright (c) 2000-2020 the FFmpeg developers built with gcc 9 (Ubuntu 9.3.0-10ubuntu2) configuration: --prefix=/home/kieranjol/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/kieranjol/ffmpeg_build/include --extra-ldflags=-L/home/kieranjol/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/home/kieranjol/bin --enable-libaom libavutil 56. 50.100 / 56. 50.100 libavcodec 58. 90.100 / 58. 90.100 libavformat58. 44.100 / 58. 44.100 libavdevice58. 9.103 / 58. 9.103 libavfilter 7. 84.100 / 7. 84.100 libswscale 5. 6.101 / 5. 6.101 libswresample 3. 6.100 / 3. 6.100 Input #0, matroska,webm, from '8fr.mkv': Metadata: ENCODER : Lavf58.44.100 Duration: 00:00:00.32, start: 0.00, bitrate: 43031 kb/s Stream #0:0: Video: v210 (v210 / 0x30313276), yuv422p10le, 320x240, SAR 1:1 DAR 4:3, 25 fps, 25 tbr, 1k tbn, 1k tbc (default) Metadata: ENCODER : Lavc58.90.100 v210 DURATION: 00:00:00.32000 Stream mapping: Stream #0:0 -> #0:0 (v210 (native) -> rawvideo (native)) Press [q] to stop, [?] for help #format: frame checksums #version: 2 #hash: MD5 #software: Lavf58.44.100 #tb 0: 1/25 #media_type 0: video #codec_id 0: rawvideo #dimensions 0: 320x240 #sar 0: 1/1 #stream#, dts,pts, duration, size, hash Output #0, framemd5, to 'pipe:': Metadata: encoder : Lavf58.44.100 Stream #0:0: Video: rawvideo (Y3[10][10] / 0xA0A3359), yuv422p10le, 320x240 [SAR 1:1 DAR 4:3], q=2-31, 38400 kb/s, 25 fps, 25 tbn, 25 tbc (default) Metadata: DURATION: 00:00:00.32000 encoder : Lavc58.90.100 rawvideo 0, 0, 0,1, 307200, 50b1ae3e77528dcdacfab21761076d2b 0, 1, 1,1, 307200, 8213a857506c099160fffb2f606f3590 0, 2, 2,1, 307200, a5e0786c6d9d152c45e2d3a0122c8987 0, 3, 3,1, 307200, fd93af578482e418d1378f6d9cd94f14 0, 4, 4,1, 307200, abfca35c7aae65d1dcddee1ce370479f 0, 5, 5,1, 307200, da151dbf22f7e818344d5efd0cbb6f09 0, 6, 6,1, 307200, b87bdb747fbd80060f71585e7d2c6ac9 0, 7, 7,1, 307200, af69163b6455654da3a37cf52cfc4525 frame=8 fps=0.0 q=-0.0 Lsize= 1kB time=00:00:00.32 bitrate= 21.4kbits/s speed=33.1x video:2400kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown ./ffmpeg -f lavfi -i testsrc -c:v v210 -vframes 8 8fr.mkv ffmpeg version N-98060-g1c32d7d Copyright (c) 2000-2020 the FFmpeg developers built with gcc 9 (Ubuntu 9.3.0-10ubuntu2) configuration: --prefix=/home/kieranjol/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/kieranjol/ffmpeg_build/include --extra-ldflags=-L/home/kieranjol/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/home/kieranjol/bin --enable-libaom libavutil 56. 50.100 / 56. 50.100 libavcodec 58. 90.100 / 58. 90.100 libavformat58. 44.100 / 58. 44.100 libavdevice58. 9.103 / 58. 9.103 libavfilter 7. 84.100 / 7. 84.100 libswscale 5. 6.101 / 5. 6.101 libswresample 3. 6.100 / 3. 6.100 Input #0, lavfi, from 'testsrc': Duration: N/A, start: 0.00, bitrate: N/A Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 320x240 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc Stream mapping: Stream #0:0 -> #0:0 (rawvideo (native) -> v210 (native)) Press [q] to stop, [?] for help Output #0, matroska, to '8fr.mkv': Metadata: encoder : Lavf58.44.100 Stream #0:0: Video: v210 (v210 / 0x30313276), yuv422p, 320x240 [SAR 1:1 DAR 4:3], q=2-31, 40960 kb/s, 25 fps, 1k tbn, 25 tbc Metadata: encoder : Lavc58.90.100
