#9022: loop flag producing a static image video unexpected behavior -------------------------------------+------------------------------------- Reporter: aj | Type: defect Status: new | Priority: normal Component: | Version: undetermined | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Dear beloved community of the open-source kingdom! I've been trying to get ffmpeg on our project into use, precisely for creating a video from an image and an audio stream. With any of the docker images, I'm getting unexpected results being unable to play video saying that it's missing the moov atoms. I also tried to post this issue on Stackoverflow. Sadly no-one is able to help: https://stackoverflow.com/questions/65185100/ffmpeg-unexpected-behavior- using-loop-flag Here's the command that I'm running: {{{ % docker run -v $(pwd):$(pwd) -w $(pwd) jrottenberg/ffmpeg:4.3-alpine \ -y \ -stats \ -loop 1 -i files/image.jpg \ -i files/a.mp3 \ -c:v libx265 -pix_fmt yuv420p10 \ -c:a aac \ -movflags +faststart \ -shortest \ -f mp4 test.mp4 }}} It should create a test.mp4 with the provided audio and image that is ready to be uploaded to the unfortunate Youtube. When I do this, the video seems to be lacking moov atoms (if I try to analyse it). Strangely enough, if I run this two times using the Docker image (overriding the same file), the video file will magically start to work. I also tried using different ffmpeg os images and versions. What else I could do to get this fixed? Here is the output from the console: {{{ % -y \ -stats \ -loop 1 -i files/image.jpg \ -i files/a.mp3 \ -c:v libx265 -pix_fmt yuv420p10 \ -c:a aac \ -movflags +faststart \ -shortest \ -f mp4 test30.mp4 ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers built with gcc 6.4.0 (Alpine 6.4.0) configuration: --disable-debug --disable-doc --disable-ffplay --enable- shared --enable-avresample --enable-libopencore-amrnb --enable- libopencore-amrwb --enable-gpl --enable-libass --enable-fontconfig --enable-libfreetype --enable-libvidstab --enable-libmp3lame --enable- libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable- libwebp --enable-libxcb --enable-libx265 --enable-libxvid --enable-libx264 --enable-nonfree --enable-openssl --enable-libfdk_aac --enable-postproc --enable-small --enable-version3 --enable-libbluray --enable-libzmq --extra-libs=-ldl --prefix=/opt/ffmpeg --enable-libopenjpeg --enable- libkvazaar --enable-libaom --extra-libs=-lpthread --enable-libsrt --enable-libaribb24 --extra-cflags=-I/opt/ffmpeg/include --extra- ldflags=-L/opt/ffmpeg/lib libavutil 56. 51.100 / 56. 51.100 libavcodec 58. 91.100 / 58. 91.100 libavformat 58. 45.100 / 58. 45.100 libavdevice 58. 10.100 / 58. 10.100 libavfilter 7. 85.100 / 7. 85.100 libavresample 4. 0. 0 / 4. 0. 0 libswscale 5. 7.100 / 5. 7.100 libswresample 3. 7.100 / 3. 7.100 libpostproc 55. 7.100 / 55. 7.100 Input #0, image2, from 'files/image.jpg': Duration: 00:00:00.04, start: 0.000000, bitrate: 34300 kb/s Stream #0:0: Video: mjpeg, gray(bt470bg/unknown/unknown), 500x500 [SAR 240:240 DAR 1:1], 25 fps, 25 tbr, 25 tbn, 25 tbc Input #1, mp3, from 'files/a.mp3': Metadata: title : Visions artist : Hattori Hanzo album : Visions encoded_by : Fission encoder : Lavf58.45.100 TLEN : 16039 track : 1 Duration: 00:00:16.04, start: 0.000000, bitrate: 199 kb/s Stream #1:0: Audio: mp3, 44100 Hz, stereo, fltp, 191 kb/s Stream #1:1: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 500x500 [SAR 300:300 DAR 1:1], 90k tbr, 90k tbn, 90k tbc (attached pic) Metadata: comment : Other Stream mapping: Stream #0:0 -> #0:0 (mjpeg (native) -> hevc (libx265)) Stream #1:0 -> #0:1 (mp3 (mp3float) -> aac (native)) Press [q] to stop, [?] for help x265 [info]: HEVC encoder version 3.1.1+1-04b37fdfd2dc x265 [info]: build info [Linux][GCC 6.4.0][64 bit] 10bit x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 x265 [info]: Main 10 profile, Level-3 (Main tier) x265 [info]: Thread pool created using 8 threads x265 [info]: Slices : 1 x265 [info]: frame threads / pool features : 3 / wpp(8 rows) x265 [warning]: Source height < 720p; disabling lookahead-slices x265 [info]: Coding QT: max CU size, min CU size : 64 / 8 x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra x265 [info]: ME / range / subpel / merge : hex / 57 / 2 / 3 x265 [info]: Keyframe min / max / scenecut / bias: 25 / 250 / 40 / 5.00 x265 [info]: Lookahead / bframes / badapt : 20 / 4 / 2 x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0 x265 [info]: References / ref-limit cu / depth : 3 / off / on x265 [info]: AQ: mode / str / qg-size / cu-tree : 2 / 1.0 / 32 / 1 x265 [info]: Rate Control / qCompress : CRF-28.0 / 0.60 x265 [info]: tools: rd=3 psy-rd=2.00 early-skip rskip signhide tmvp b-intra x265 [info]: tools: strong-intra-smoothing deblock sao Output #0, mp4, to 'test30.mp4': Metadata: encoder : Lavf58.45.100 Stream #0:0: Video: hevc (libx265) (hev1 / 0x31766568), yuv420p10le(progressive), 500x500 [SAR 1:1 DAR 1:1], q=-1--1, 25 fps, 12800 tbn, 25 tbc Metadata: encoder : Lavc58.91.100 libx265 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A Stream #0:1: Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s Metadata: encoder : Lavc58.91.100 aac frame= 52 fps=0.0 q=33.0 size= 0kB time=00:00:00.80 bitrate= 0.4kbits/frame= 120 fps=119 q=33.0 size= 0kB time=00:00:03.52 bitrate= 0.1kbits/frame= 190 fps=125 q=33.0 size= 0kB time=00:00:06.33 bitrate= 0.1kbits/frame= 257 fps=127 q=33.0 size= 0kB time=00:00:09.00 bitrate= 0.0kbits/frame= 303 fps=120 q=35.0 size= 256kB time=00:00:10.86 bitrate= 193.0kbits/frame= 373 fps=123 q=36.0 size= 256kB time=00:00:13.65 bitrate= 153.6kbits/[mp4 @ 0x55d481bc6980] Starting second pass: moving the moov atom to the beginning of the file frame= 432 fps=121 q=36.0 Lsize= 379kB time=00:00:17.16 bitrate= 180.8kbits/s speed= 4.8x video:107kB audio:255kB subtitle:0kB other streams:0kB global headers:2kB muxing overhead: 4.667185% x265 [info]: frame I: 2, Avg QP:23.55 kb/s: 8634.80 x265 [info]: frame P: 147, Avg QP:33.00 kb/s: 13.49 x265 [info]: frame B: 283, Avg QP:35.71 kb/s: 8.06 x265 [info]: Weighted P-Frames: Y:0.0% UV:0.0% x265 [info]: consecutive B-frames: 34.2% 10.1% 20.8% 1.3% 33.6% encoded 432 frames in 3.56s (121.32 fps), 49.84 kb/s, Avg QP:34.73 [aac @ 0x55d481b23ac0] Qavg: 563.168 }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/9022> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker