June 2025 - ffmpeg-user - lists.ffmpeg.org

ffmpeg ignores MP3 comment tag when transcodiing
by Ulf Zibis 26 Nov '25

26 Nov '25

Hi, when i use the lame encoder directly, the comment tag of a mp3 file is conserved: $ lame -V1 in.mp3 out.mp3 LAME 3.100 64bits (http://lame.sf.net) Using polyphase lowpass filter, transition band: 19383 Hz - 19916 Hz Encoding in.mp3 to out.mp3 Encoding as 44.1 kHz j-stereo MPEG-1 Layer III VBR(q=1) Frame | CPU time/estim | REAL time/estim | play/CPU | ETA 10104/10104 (100%)| 0:04/ 0:04| 0:04/ 0:04| 54.411x| 0:00 32 [ 29] * 40 [ 0] 48 [ 0] 56 [ 0] 64 [ 0] 80 [ 0] 96 [ 0] 112 [ 2] % 128 [ 0] 160 [ 0] 192 [ 2473] %%%%%%%%%%%%%%%%%%%%%%%%%%%%* 224 [ 5892] %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 256 [ 1506] %%%%%%%%%%%%%%%%%* 320 [ 202] %%% ------------------------------------------------------------------------------- kbps LR MS % long switch short % 222.3 98.3 1.7 95.7 2.3 2.0 Writing LAME Tag...done ReplayGain: +2.1dB $ mediainfo out.mp3 General Complete name : out.mp3 Format : MPEG Audio File size : 7.04 MiB Duration : 4 min 23 s Overall bit rate mode : Variable Overall bit rate : 222 kb/s Album : A Momentary Lapse Of Reason Album/Performer : Pink Floyd Track name : Signs Of Life Track name/Position : 01 Performer : Pink Floyd Genre : Rock Recorded date : 1987 Writing library : LAME3.100 Cover : Yes Cover type : Cover (front) Cover MIME : image/jpeg Comment : Columbia Records 2005 Remastered Edition. Audio Format : MPEG Audio Format version : Version 1 Format profile : Layer 3 Format settings : Joint stereo Duration : 4 min 23 s Bit rate mode : Variable Bit rate : 222 kb/s Minimum bit rate : 32.0 kb/s Channel(s) : 2 channels Sampling rate : 44.1 kHz Frame rate : 38.281 FPS (1152 SPF) Compression mode : Lossy Stream size : 6.99 MiB (99%) Writing library : LAME3.100 Encoding settings : -m j -V 1 -q 0 -lowpass 19.5 --vbr-new -b 32 Image Format : JPEG Width : 500 pixels Height : 500 pixels Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Compression mode : Lossy Stream size : 51.9 KiB (1%) Using ffmpeg, the comment tag is lost: $ ffmpeg -i in.mp3 -q 1 -c:v copy out.mp3 ffmpeg version 6.1.1-3ubuntu5 Copyright (c) 2000-2023 the FFmpeg developers built with gcc 13 (Ubuntu 13.2.0-23ubuntu3) configuration: --prefix=/usr --extra-version=3ubuntu5 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --disable-omx --enable-gnutls --enable-libaom --enable-libass --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm --enable-libharfbuzz --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-openal --enable-opencl --enable-opengl --disable-sndio --enable-libvpl --disable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-ladspa --enable-libbluray --enable-libjack --enable-libpulse --enable-librabbitmq --enable-librist --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libx264 --enable-libzmq --enable-libzvbi --enable-lv2 --enable-sdl2 --enable-libplacebo --enable-librav1e --enable-pocketsphinx --enable-librsvg --enable-libjxl --enable-shared libavutil 58. 29.100 / 58. 29.100 libavcodec 60. 31.102 / 60. 31.102 libavformat 60. 16.100 / 60. 16.100 libavdevice 60. 3.100 / 60. 3.100 libavfilter 9. 12.100 / 9. 12.100 libswscale 7. 5.100 / 7. 5.100 libswresample 4. 12.100 / 4. 12.100 libpostproc 57. 3.100 / 57. 3.100 Incorrect BOM value Error reading comment frame, skipped Incorrect BOM value Error reading lyrics, skipped Input #0, mp3, from 'in.mp3': Metadata: album : A Momentary Lapse Of Reason genre : Rock title : Signs Of Life artist : Pink Floyd track : 01 album_artist : Pink Floyd date : 1987 Duration: 00:04:23.97, start: 0.025056, bitrate: 321 kb/s Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 320 kb/s Metadata: encoder : LAME3.97 Stream #0:1: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 500x500 [SAR 1:1 DAR 1:1], 90k tbr, 90k tbn (attached pic) Metadata: comment : Cover (front) Stream mapping: Stream #0:1 -> #0:0 (copy) Stream #0:0 -> #0:1 (mp3 (mp3float) -> mp3 (libmp3lame)) Press [q] to stop, [?] for help Output #0, mp3, to 'out.mp3': Metadata: TALB : A Momentary Lapse Of Reason TCON : Rock TIT2 : Signs Of Life TPE1 : Pink Floyd TRCK : 01 TPE2 : Pink Floyd TDRC : 1987 TSSE : Lavf60.16.100 Stream #0:0: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 500x500 [SAR 1:1 DAR 1:1], q=2-31, 90k tbr, 90k tbn (attached pic) Metadata: comment : Cover (front) Stream #0:1: Audio: mp3, 44100 Hz, stereo, fltp Metadata: encoder : Lavc60.31.102 libmp3lame [out#0/mp3 @ 0x5853cd73b540] video:52kB audio:7174kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.005825% size= 7226kB time=00:04:23.89 bitrate= 224.3kbits/s speed=53.3x $ mediainfo out.mp3 General Complete name : out.mp3 Format : MPEG Audio File size : 7.06 MiB Duration : 4 min 23 s Overall bit rate mode : Variable Overall bit rate : 223 kb/s Album : A Momentary Lapse Of Reason Album/Performer : Pink Floyd Track name : Signs Of Life Track name/Position : 01 Performer : Pink Floyd Genre : Rock Recorded date : 1987 Writing library : LAME3.100 Cover : Yes Cover type : Cover (front) Cover MIME : image/jpeg Audio Format : MPEG Audio Format version : Version 1 Format profile : Layer 3 Format settings : Joint stereo Duration : 4 min 23 s Bit rate mode : Variable Bit rate : 224 kb/s Channel(s) : 2 channels Sampling rate : 44.1 kHz Frame rate : 38.281 FPS (1152 SPF) Compression mode : Lossy Stream size : 7.01 MiB (99%) Writing library : LAME3.100 Image Format : JPEG Width : 500 pixels Height : 500 pixels Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Compression mode : Lossy Stream size : 51.9 KiB (1%) How can I conserve the comment tag? -Ulf

1 1

Has flag hybrid_fragmented flag (yet) been added to ffmpeg release?
by Bo Berglund 26 Sep '25

26 Sep '25

The hybrid_fragmented flag is used to enable viewers to read an mp4 file while it is being wrtitten according to the documentation here: https://ffmpeg.org/ffmpeg-formats.html But has it been released yet and in that case from which version is it available? I really need to be able to start viewing mp4 files before they are closed by the writer.... -- Bo Berglund Developer in Sweden

3 6

Would it be possible to load xattr-related media-files like a container?
by Peter B. 02 Aug '25

02 Aug '25

Hi everyone :) I'm working a lot with extended attributes on filesystems, and I'm amazed! I was wondering if it would be possible for ffmpeg to load "related media-streams" as related objects: Having a 0-Byte "videofile.aha": * video = /path/to/my_movie.h264 * audio = ./my_movie-DE_AT.flac * audio.1 = my_movie-EN_GB.mp3 * video.default = video * audio.default = audio.1 * dc.title = "My Movie" * dc.creator = "..." * ... Like an input demuxer which resolves the related objects and treats this like loading a container? I imagine this to be quite fun (and useful actually). One could then drag-and-drop to remux tracks, and right-click-edit metadata, I imagine. Feedback greatly appreciated :) Have a great day! Peter

1 1

Cleaning up codeline to grab and record HDV video using Firewire/libiec61883
by Terje J. Hanssen 01 Jul '25

01 Jul '25

My Sony HDR-FX7E HDV camcorder is connected via Firewire (Sony i.Link) to record standard 1080i50 HDV video, 1440x1080, 25 Mbps (.M2T). I hope to get help to cleanup the codelines to solve the following issues: 1) Testing first the FFmpeg Devices Documentation's codeline to "Grab and record the input of a FireWire DV/HDV device, using a packet buffer of 100000 packets if the source is HDV" https://www.ffmpeg.org/ffmpeg-devices.html#Examples-3 results in a highly compressed video with bitrate only 1106 kbits/s a) Why so when the standard .M2T is 25 Mbps? b) There are also warnings regarding streams 0, 3, 4 ? c) Consider increasing the value for the 'analyzeduration', 'probesize'? ffmpeg -hide_banner -f iec61883 -i auto -dvbuffer 100000 out.mpg [mpeg2video @ 0x5570d56ba940] Invalid frame dimensions 0x0. Last message repeated 6 times [iec61883 @ 0x5570d569ca00] Could not find codec parameters for stream 0 (Unknown: none): unknown codec Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options [iec61883 @ 0x5570d569ca00] Could not find codec parameters for stream 3 (Unknown: none ([161][0][0][0] / 0x00A1)): unknown codec Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options [iec61883 @ 0x5570d569ca00] Could not find codec parameters for stream 4 (Unknown: none ([160][0][0][0] / 0x00A0)): unknown codec Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options Input #0, iec61883, from 'auto': Duration: N/A, start: 1775.229356, bitrate: 25384 kb/s Program 100 Stream #0:2: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, bt709, top first), 1440x1080 [SAR 4:3 DAR 16:9], 25000 kb/s, 25 fps, 25 tbr, 90k tbn Side data: cpb: bitrate max/min/avg: 25000000/0/0 buffer size: 7340032 vbv_delay: N/A Stream #0:1: Audio: mp2 (mp3float) ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 384 kb/s Stream #0:4: Unknown: none ([160][0][0][0] / 0x00A0) Stream #0:3: Unknown: none ([161][0][0][0] / 0x00A1) No Program Stream #0:0: Unknown: none Stream mapping: Stream #0:2 -> #0:0 (mpeg2video (native) -> mpeg1video (native)) Stream #0:1 -> #0:1 (mp2 (native) -> mp2 (native)) Press [q] to stop, [?] for help [mpeg @ 0x5570d56e25c0] VBV buffer size not set, using default size of 230KB If you want the mpeg file to be compliant to some specification Like DVD, VCD or others, make sure you set the correct buffer size Output #0, mpeg, to 'out.mpg': Metadata: encoder : Lavf61.7.100 Stream #0:0: Video: mpeg1video, yuv420p(tv, bt709, top coded first (swapped)), 1440x1080 [SAR 4:3 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 90k tbn Metadata: encoder : Lavc61.19.101 mpeg1video Side data: cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s Metadata: encoder : Lavc61.19.101 mp2 [out#0/mpeg @ 0x5570d56ea0c0] video:1278KiB audio:688KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 0.773339% frame= 373 fps= 29 q=24.8 Lsize= 1982KiB time=00:00:14.67 bitrate=1106.2kbits/s dup=17 drop=0 speed=1.13x Exiting normally, received signal 2. =============== 2) a) Adding "-c copy" solves the output bitrate = input bitrate = 25 Mbps c) Trying to increase the value for the 'analyzeduration' (0) and 'probesize' are not successful? ffmpeg -loglevel debug -f iec61883 -analyzeduration 1 -probesize 10M -i auto -dvbuffer 100000 -c copy out6.m2t ffmpeg version 7.1.1 Copyright (c) 2000-2025 the FFmpeg developers built with gcc 14 (SUSE Linux) configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --incdir=/usr/include/ffmpeg --extra-cflags='-O2 -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type -flto=auto -ffat-lto-objects -g' --optflags='-O2 -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type -flto=auto -ffat-lto-objects -g' --disable-htmlpages --enable-pic --disable-stripping --enable-shared --disable-static --enable-gpl --enable-version3 --enable-libsmbclient --disable-openssl --enable-gnutls --enable-ladspa --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libdc1394 --enable-libdrm --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libjxl --enable-librist --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopenh264-dlopen --enable-libopus --enable-libpulse --enable-librav1e --enable-librubberband --enable-libsvtav1 --enable-libsoxr --enable-libspeex --enable-libssh --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libxml2 --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lto --enable-lv2 --enable-libvpl --enable-vaapi --enable-vdpau --enable-version3 --enable-libfdk-aac-dlopen --enable-nonfree --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-libx264 --enable-libx265 --enable-libxvid libavutil 59. 39.100 / 59. 39.100 libavcodec 61. 19.101 / 61. 19.101 libavformat 61. 7.100 / 61. 7.100 libavdevice 61. 3.100 / 61. 3.100 libavfilter 10. 4.100 / 10. 4.100 libswscale 8. 3.100 / 8. 3.100 libswresample 5. 3.100 / 5. 3.100 libpostproc 58. 3.100 / 58. 3.100 Splitting the commandline. Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'. Reading option '-f' ... matched as option 'f' (force container format (auto-detected otherwise)) with argument 'iec61883'. Reading option '-analyzeduration' ... matched as AVOption 'analyzeduration' with argument '1'. Reading option '-probesize' ... matched as AVOption 'probesize' with argument '10M'. Reading option '-i' ... matched as input url with argument 'auto'. Reading option '-dvbuffer' ... matched as AVOption 'dvbuffer' with argument '100000'. Reading option '-c' ... matched as option 'c' (select encoder/decoder ('copy' to copy stream without reencoding)) with argument 'copy'. Reading option 'out6.m2t' ... matched as output url. Finished splitting the commandline. Parsing a group of options: global . Applying option loglevel (set logging level) with argument debug. Successfully parsed a group of options. Parsing a group of options: input url auto. Applying option f (force container format (auto-detected otherwise)) with argument iec61883. Successfully parsed a group of options. Opening an input file: auto. [iec61883 @ 0x555754cd2a40] stream=1 stream_type=0 pid=810 prog_reg_desc= [iec61883 @ 0x555754cd2a40] stream=2 stream_type=0 pid=814 prog_reg_desc= [iec61883 @ 0x555754cd2a40] probing stream 2 pp:2500 [iec61883 @ 0x555754cd2a40] Probe with size=1152, packets=1 detected mp3 with score=1 [iec61883 @ 0x555754cd2a40] stream=1 stream_type=2 pid=810 prog_reg_desc=TSHV [iec61883 @ 0x555754cd2a40] stream=2 stream_type=3 pid=814 prog_reg_desc=TSHV [iec61883 @ 0x555754cd2a40] stream=3 stream_type=a0 pid=815 prog_reg_desc=TSHV [iec61883 @ 0x555754cd2a40] stream=4 stream_type=a1 pid=811 prog_reg_desc=TSHV [iec61883 @ 0x555754cd2a40] parser not found for codec none, packets or times may be invalid. [mpeg2video @ 0x555754ceeec0] Invalid frame dimensions 0x0. [iec61883 @ 0x555754cd2a40] parser not found for codec none, packets or times may be invalid. [iec61883 @ 0x555754cd2a40] max_analyze_duration 1 reached at 24000 microseconds st:2 [iec61883 @ 0x555754cd2a40] Could not find codec parameters for stream 0 (Unknown: none): unknown codec Consider increasing the value for the 'analyzeduration' (1) and 'probesize' (10000000) options [iec61883 @ 0x555754cd2a40] Could not find codec parameters for stream 1 (Video: mpeg2video, 1 reference frame ([2][0][0][0] / 0x0002), none(tv)): unspecified size Consider increasing the value for the 'analyzeduration' (1) and 'probesize' (10000000) options [iec61883 @ 0x555754cd2a40] Could not find codec parameters for stream 3 (Unknown: none ([160][0][0][0] / 0x00A0)): unknown codec Consider increasing the value for the 'analyzeduration' (1) and 'probesize' (10000000) options [iec61883 @ 0x555754cd2a40] Could not find codec parameters for stream 4 (Unknown: none ([161][0][0][0] / 0x00A1)): unknown codec Consider increasing the value for the 'analyzeduration' (1) and 'probesize' (10000000) options Input #0, iec61883, from 'auto': Duration: N/A, start: 815.829378, bitrate: 384 kb/s Program 100 Stream #0:1, 1, 1/90000: Video: mpeg2video, 1 reference frame ([2][0][0][0] / 0x0002), none(tv), 90k tbr, 90k tbn Stream #0:2, 3, 1/90000: Audio: mp2 (mp3float) ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 384 kb/s Stream #0:3, 1, 1/90000: Unknown: none ([160][0][0][0] / 0x00A0) Stream #0:4, 1, 1/90000: Unknown: none ([161][0][0][0] / 0x00A1) No Program Stream #0:0, 0, 1/90000: Unknown: none Successfully opened the file. Parsing a group of options: output url out6.m2t. Applying option c (select encoder/decoder ('copy' to copy stream without reencoding)) with argument copy. Successfully parsed a group of options. Opening an output file: out6.m2t. [out#0/mpegts @ 0x555754cfe780] No explicit maps, mapping streams automatically... [vost#0:0/copy @ 0x555754cfcec0] Created video stream from input stream 0:1 [aost#0:1/copy @ 0x555754cfd500] Created audio stream from input stream 0:2 [file @ 0x555754cfda80] Setting default whitelist 'file,crypto,data' Successfully opened the file. Stream mapping: Stream #0:1 -> #0:0 (copy) Stream #0:2 -> #0:1 (copy) [mpegts @ 0x555754cfe8c0] service 1 using PCR in pid=256, pcr_period=0ms [mpegts @ 0x555754cfe8c0] muxrate VBR, sdt every 500 ms, pat/pmt every 100 ms Output #0, mpegts, to 'out6.m2t': Metadata: encoder : Lavf61.7.100 Stream #0:0, 0, 1/90000: Video: mpeg2video, 1 reference frame ([2][0][0][0] / 0x0002), none(tv), q=2-31, 90k tbr, 90k tbn Stream #0:1, 0, 1/90000: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 384 kb/s [out#0/mpegts @ 0x555754cfe780] Starting thread... [in#0/iec61883 @ 0x555754cd2780] Starting thread... Press [q] to stop, [?] for help frame= 9 fps=0.0 q=-1.0 size= 768KiB time=00:00:00.60 bitrate=10485.8kbits/s speed= 1.2x frame= 22 fps= 22 q=-1.0 size= 2304KiB time=00:00:01.10 bitrate=17096.3kbits/s speed= 1.1x frame= 34 fps= 23 q=-1.0 size= 3584KiB time=00:00:01.60 bitrate=18258.8kbits/s speed=1.07x frame= 47 fps= 23 q=-1.0 size= 5376KiB time=00:00:02.11 bitrate=20852.4kbits/s speed=1.06x frame= 59 fps= 24 q=-1.0 size= 6912KiB time=00:00:02.61 bitrate=21644.9kbits/s speed=1.05x frame= 71 fps= 24 q=-1.0 size= 8448KiB time=00:00:03.09 bitrate=22353.4kbits/s speed=1.03x frame= 84 fps= 24 q=-1.0 size= 10240KiB time=00:00:03.60 bitrate=23301.7kbits/s speed=1.03x frame= 97 fps= 24 q=-1.0 size= 11776KiB time=00:00:04.10 bitrate=23506.1kbits/s speed=1.03x frame= 109 fps= 24 q=-1.0 size= 13312KiB time=00:00:04.60 bitrate=23665.8kbits/s speed=1.02x frame= 122 fps= 24 q=-1.0 size= 14848KiB time=00:00:05.11 bitrate=23794.0kbits/s speed=1.02x frame= 134 fps= 24 q=-1.0 size= 16640KiB time=00:00:05.61 bitrate=24272.6kbits/s speed=1.02x frame= 146 fps= 24 q=-1.0 size= 18176KiB time=00:00:06.09 bitrate=24425.5kbits/s speed=1.02x frame= 159 fps= 24 q=-1.0 size= 19712KiB time=00:00:06.60 bitrate=24466.8kbits/s speed=1.01x frame= 172 fps= 25 q=-1.0 size= 21248KiB time=00:00:07.10 bitrate=24502.2kbits/s speed=1.01x frame= 184 fps= 25 q=-1.0 size= 22784KiB time=00:00:07.60 bitrate=24532.9kbits/s speed=1.01x frame= 197 fps= 25 q=-1.0 size= 24576KiB time=00:00:08.11 bitrate=24818.4kbits/s speed=1.01x frame= 209 fps= 25 q=-1.0 size= 26112KiB time=00:00:08.59 bitrate=24896.4kbits/s speed=1.01x frame= 221 fps= 25 q=-1.0 size= 27648KiB time=00:00:09.09 bitrate=24900.2kbits/s speed=1.01x frame= 234 fps= 25 q=-1.0 size= 29184KiB time=00:00:09.60 bitrate=24903.7kbits/s speed=1.01x frame= 247 fps= 25 q=-1.0 size= 30720KiB time=00:00:10.10 bitrate=24906.8kbits/s speed=1.01x frame= 259 fps= 25 q=-1.0 size= 32256KiB time=00:00:10.60 bitrate=24909.6kbits/s speed=1.01x frame= 272 fps= 25 q=-1.0 size= 34048KiB time=00:00:11.11 bitrate=25100.9kbits/s speed=1.01x frame= 284 fps= 25 q=-1.0 size= 35584KiB time=00:00:11.59 bitrate=25147.0kbits/s speed=1.01x frame= 296 fps= 25 q=-1.0 size= 37120KiB time=00:00:12.09 bitrate=25139.5kbits/s speed=1.01x frame= 309 fps= 25 q=-1.0 size= 38656KiB time=00:00:12.60 bitrate=25132.5kbits/s speed=1.01x frame= 322 fps= 25 q=-1.0 size= 40192KiB time=00:00:13.10 bitrate=25126.1kbits/s speed=1.01x frame= 334 fps= 25 q=-1.0 size= 41728KiB time=00:00:13.60 bitrate=25120.2kbits/s speed=1.01x frame= 347 fps= 25 q=-1.0 size= 43520KiB time=00:00:14.11 bitrate=25263.3kbits/s speed=1.01x frame= 359 fps= 25 q=-1.0 size= 45056KiB time=00:00:14.59 bitrate=25294.6kbits/s speed=1.01x frame= 371 fps= 25 q=-1.0 size= 46592KiB time=00:00:15.09 bitrate=25283.6kbits/s speed=1.01x frame= 384 fps= 25 q=-1.0 size= 48384KiB time=00:00:15.60 bitrate=25407.8kbits/s speed=1.01x frame= 397 fps= 25 q=-1.0 size= 49920KiB time=00:00:16.10 bitrate=25394.0kbits/s speed=1.01x frame= 409 fps= 25 q=-1.0 size= 51200KiB time=00:00:16.60 bitrate=25254.7kbits/s speed=1.01x frame= 422 fps= 25 q=-1.0 size= 52992KiB time=00:00:17.11 bitrate=25368.8kbits/s speed=1.01x frame= 434 fps= 25 q=-1.0 size= 54528KiB time=00:00:17.59 bitrate=25391.8kbits/s speed= 1x frame= 446 fps= 25 q=-1.0 size= 56064KiB time=00:00:18.09 bitrate=25380.0kbits/s speed= 1x frame= 459 fps= 25 q=-1.0 size= 57856KiB time=00:00:18.60 bitrate=25481.5kbits/s speed=1.01x frame= 472 fps= 25 q=-1.0 size= 59392KiB time=00:00:19.10 bitrate=25467.9kbits/s speed=1.01x frame= 484 fps= 25 q=-1.0 size= 60928KiB time=00:00:19.60 bitrate=25455.0kbits/s speed=1.01x frame= 497 fps= 25 q=-1.0 size= 62464KiB time=00:00:20.11 bitrate=25442.8kbits/s speed=1.01x frame= 509 fps= 25 q=-1.0 size= 64000KiB time=00:00:20.59 bitrate=25460.8kbits/s speed= 1x frame= 521 fps= 25 q=-1.0 size= 65792KiB time=00:00:21.09 bitrate=25548.4kbits/s speed= 1x frame= 534 fps= 25 q=-1.0 size= 67328KiB time=00:00:21.60 bitrate=25534.8kbits/s speed= 1x frame= 547 fps= 25 q=-1.0 size= 68864KiB time=00:00:22.10 bitrate=25521.8kbits/s speed= 1x frame= 559 fps= 25 q=-1.0 size= 70400KiB time=00:00:22.60 bitrate=25509.4kbits/s speed= 1x frame= 572 fps= 25 q=-1.0 size= 72192KiB time=00:00:23.11 bitrate=25588.3kbits/s speed= 1x frame= 584 fps= 25 q=-1.0 size= 73728KiB time=00:00:23.59 bitrate=25601.0kbits/s speed= 1x frame= 596 fps= 25 q=-1.0 size= 75264KiB time=00:00:24.09 bitrate=25587.8kbits/s speed= 1x frame= 609 fps= 25 q=-1.0 size= 76800KiB time=00:00:24.60 bitrate=25575.0kbits/s speed= 1x frame= 622 fps= 25 q=-1.0 size= 78336KiB time=00:00:25.10 bitrate=25562.8kbits/s speed= 1x frame= 634 fps= 25 q=-1.0 size= 79872KiB time=00:00:25.60 bitrate=25551.1kbits/s speed= 1x frame= 647 fps= 25 q=-1.0 size= 81664KiB time=00:00:26.08 bitrate=25643.6kbits/s speed= 1x frame= 659 fps= 25 q=-1.0 size= 83200KiB time=00:00:26.59 bitrate=25630.8kbits/s speed= 1x frame= 671 fps= 25 q=-1.0 size= 84736KiB time=00:00:27.09 bitrate=25618.4kbits/s speed= 1x frame= 684 fps= 25 q=-1.0 size= 86272KiB time=00:00:27.60 bitrate=25606.5kbits/s speed= 1x frame= 696 fps= 25 q=-1.0 size= 87808KiB time=00:00:28.10 bitrate=25595.0kbits/s speed= 1x frame= 709 fps= 25 q=-1.0 size= 89344KiB time=00:00:28.60 bitrate=25584.0kbits/s speed= 1x [in#0/iec61883 @ 0x555754cd2780] Terminating thread with return code 0 (success) [out#0/mpegts @ 0x555754cfe780] All streams finished [out#0/mpegts @ 0x555754cfe780] Terminating thread with return code 0 (success) [AVIOContext @ 0x555754cf4200] Statistics: 93923108 bytes written, 0 seeks, 359 writeouts [out#0/mpegts @ 0x555754cfe780] Output file #0 (out6.m2t): [out#0/mpegts @ 0x555754cfe780] Output stream #0:0 (video): 722 packets muxed (90290112 bytes); [out#0/mpegts @ 0x555754cfe780] Output stream #0:1 (audio): 1212 packets muxed (1396224 bytes); [out#0/mpegts @ 0x555754cfe780] Total: 1934 packets (91686336 bytes) muxed [out#0/mpegts @ 0x555754cfe780] video:88174KiB audio:1364KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 2.439591% frame= 722 fps= 25 q=-1.0 Lsize= 91722KiB time=00:00:29.08 bitrate=25831.4kbits/s speed= 1x [in#0/iec61883 @ 0x555754cd2780] Input file #0 (auto): [in#0/iec61883 @ 0x555754cd2780] Input stream #0:1 (video): 727 packets read (90852850 bytes); [in#0/iec61883 @ 0x555754cd2780] Input stream #0:2 (audio): 1213 packets read (1397376 bytes); [in#0/iec61883 @ 0x555754cd2780] Total: 1940 packets (92250226 bytes) demuxed Exiting normally, received signal 2.

2 5

X Window Capture using FFmpeg
by novaTopFlex 30 Jun '25

30 Jun '25

I have just reported an incident where I had attempted to utilize ffmpeg with the specific purpose of X window capture. As of now, X window capture is not currently supported using FFmpeg. So far, the latest command that I had attempted for an X window capture was the following: ffmpeg -f x11grab -framerate 60 -video_size 644x537 -show_region 1 -i :0.0+137,292 out2.mp4 Unfortunately, however, my goal was not to record this portion of the screen specifically. Instead, my goal was to utilize the window identifier, 0x0614eb7. Andrew Kay (novaTopFlex) Sent with [Proton Mail](https://proton.me/mail/home) secure email.

1 0

How to copy MP3 320 bps frames?
by Ulf Zibis 29 Jun '25

29 Jun '25

Hi, when i use the lame encoder to transcode a 320 bps mp3 to VBR, I can see, that some percentage of frames is encoded to 320 bps frames, so these frames seem to contain important data : $ lame -V1 in.mp3 out.mp3 LAME 3.100 64bits (http://lame.sf.net) Using polyphase lowpass filter, transition band: 19383 Hz - 19916 Hz Encoding in.mp3 to out.mp3 Encoding as 44.1 kHz j-stereo MPEG-1 Layer III VBR(q=1) Frame | CPU time/estim | REAL time/estim | play/CPU | ETA 10104/10104 (100%)| 0:04/ 0:04| 0:04/ 0:04| 54.411x| 0:00 32 [ 29] * 40 [ 0] 48 [ 0] 56 [ 0] 64 [ 0] 80 [ 0] 96 [ 0] 112 [ 2] % 128 [ 0] 160 [ 0] 192 [ 2473] %%%%%%%%%%%%%%%%%%%%%%%%%%%%* 224 [ 5892] %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 256 [ 1506] %%%%%%%%%%%%%%%%%* 320 [ 202] %%% ------------------------------------------------------------------------------- kbps LR MS % long switch short % 222.3 98.3 1.7 95.7 2.3 2.0 Writing LAME Tag...done ReplayGain: +2.1dB Would it be possible to just copy those frames using ffmpeg, instead of re-encoding them to get the maximum of quality? -Ulf

1 0

dvdsubs
by Mark Filipak 27 Jun '25

27 Jun '25

The documentation says that dvdsubs are bit mapped. I don't think so. Aren't dvdsubs run length encoded? --Mark.

3 10

BT601-625
by Mark Filipak 26 Jun '25

26 Jun '25

I have only one PAL DVD, colorspace BT601-625. FFmpeg rejects it's colorspace. -filter_complex "colormatrix=src=bt601:dst..." provokes "[Parsed_colorspace_2 @ 00000000082a6440] Unsupported input primaries 2 (unknown)". MPV says, "BT601-625". FFprobe doesn't say. What's kinda funny is that I have another DVD, a Korean pirate DVD, that's also marked "BT601-625" but that is actually 720x480 (i.e. actually BT601-525). FFmpeg handles it just fine. Is 576 lines causing the problem? Hard to believe. Got any ideas?--Mark. Script: : Extracts HD of an SD movie, burns-in HD subtitles. (speed < 1 fps.) : Colorspace is converted. set _STANDARD_PREP_^ =-analyzeduration 500000000 -probesize 500000000^ -copyts -start_at_zero set _STANDARD_ENCODE_^ =-c:v libx264 -x264-params^ 8x8dct=1:analyse=0x3,0x133:aq-mode=1:aq-strength=1.0:b-adapt=2:b-bias^ =0:b-pyramid=2:bframes=5:bitrate=2850:bluray-compat=0:cabac=1:chroma-m^ e=1:chroma-qp-offset=-2:constrained-intra=0:cplxblur=20.0:cqm=flat:dea^ dzone-inter=21:deadzone-intra=11:deblock=1,-1,-1:direct=auto:fast-pski^ p=0:filler=0:interlaced=0:intra-refresh=0:ipratio=1.40:keyint-min=23:k^ eyint=240:lookahead-threads=3:mbtree=1:me=umh:merange=30:nal-hrd=none:^ nr=0:open-gop=0:psy-rd=1.00,0.00:psy=1:qblur=0.5:qcomp=0.60:qpmax=69:q^ pmin=1:qpstep=4:ratetol=1.0:rc-lookahead=50:ref=5:scenecut=40:sliced-t^ hreads=0:slices=4:subme=7:threads=12:trellis=1:vbv-bufsize=78125:vbv-m^ axrate=62500:weightb=1:weightp=2 set _NO_CAPTIONS_^ =filter_units=remove_types=6 set _TO_BT709_^ =colormatrix=src=smpte170m:dst=bt709,colorspace=all=bt709 set _TO_BT709_^ =colormatrix=src=bt470:dst=bt709,colorspace=all=bt709 set _TO_BT709_^ =colormatrix=src=bt601:dst=bt709,colorspace=all=bt709 set _TO_HD_^ =scale=w=1920:h=1080 : ffmpeg %_STANDARD_PREP_%^ -r:v 24000/1001 -i "y:\VIDEO_TS\VTS_05_1.VOB" -ss 120 -t 20^ -bsf:v "%_NO_CAPTIONS_%"^ -filter_complex^ "[0:v]%_TO_BT709_%,%_TO_HD_%[v],[0:s:0]%_TO_HD_%[s],[v][s]overlay[sv]" -map "[sv]"^ %_STANDARD_ENCODE_%^ c:\foo.mp4 Screen output: Y:\VIDEO_TS>ffmpeg %_STANDARD_PREP_%^ More? -r:v 24000/1001 -i "y:\VIDEO_TS\VTS_05_1.VOB" -ss 120 -t 20^ More? -bsf:v "%_NO_CAPTIONS_%"^ More? -filter_complex^ More? "[0:v]%_TO_BT709_%,%_TO_HD_%[v],[0:s:0]%_TO_HD_%[s],[v][s]overlay[sv]" -map "[sv]"^ More? %_STANDARD_ENCODE_%^ More? c:\foo.mp4 ffmpeg version N-119869-g3ac7d70291-20250611 Copyright (c) 2000-2025 the FFmpeg developers built with gcc 15.1.0 (crosstool-NG 1.27.0.42_35c1e72) configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --enable-shared --disable-static --disable-w32threads --enable-pthreads --enable-iconv --enable-zlib --enable-libfribidi --enable-gmp --enable-libxml2 --enable-lzma --enable-fontconfig --enable-libharfbuzz --enable-libfreetype --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth --enable-chromaprint --enable-libdav1d --enable-libdavs2 --enable-libdvdread --enable-libdvdnav --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-libaribcaption --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librist --enable-libssh --enable-libtheora --enable-libvpx --enable-libwebp --enable-libzmq --enable-lv2 --enable-libvpl --enable-openal --enable-liboapv --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --enable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libvvenc --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-libs=-lgomp --extra-ldflags=-pthread --extra-ldexeflags= --cc=x86_64-w64-mingw32-gcc --cxx=x86_64-w64-mingw32-g++ --ar=x86_64-w64-mingw32-gcc-ar --ranlib=x86_64-w64-mingw32-gcc-ranlib --nm=x86_64-w64-mingw32-gcc-nm --extra-version=20250611 libavutil 60. 3.100 / 60. 3.100 libavcodec 62. 3.101 / 62. 3.101 libavformat 62. 1.100 / 62. 1.100 libavdevice 62. 0.100 / 62. 0.100 libavfilter 11. 0.100 / 11. 0.100 libswscale 9. 0.100 / 9. 0.100 libswresample 6. 0.100 / 6. 0.100 Input #0, mpeg, from 'y:\VIDEO_TS\VTS_05_1.VOB': Duration: 00:23:01.02, start: 0.049756, bitrate: 6219 kb/s Stream #0:0[0x1bf]: Data: dvd_nav_packet, Start 0.049756 Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, Start 0.049756 Side data: cpb: bitrate max/min/avg: 9800000/0/0 buffer size: 1835008 vbv_delay: N/A Stream #0:2[0x84]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s, Start 0.049756 Stream #0:3[0x83]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s, Start 0.049756 Stream #0:4[0x82]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s, Start 0.049756 Stream #0:5[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s, Start 0.049756 Stream #0:6[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s, Start 0.049756 Stream #0:7[0x2f]: Subtitle: dvd_subtitle (dvdsub), Start 186.649756 Stream #0:8[0x2c]: Subtitle: dvd_subtitle (dvdsub), Start 186.649756 Stream #0:9[0x2b]: Subtitle: dvd_subtitle (dvdsub), Start 186.649756 Stream #0:10[0x26]: Subtitle: dvd_subtitle (dvdsub), Start 186.649756 Stream #0:11[0x22]: Subtitle: dvd_subtitle (dvdsub), Start 190.969756 Stream #0:12[0x25]: Subtitle: dvd_subtitle (dvdsub), Start 232.329756 Stream #0:13[0x32]: Subtitle: dvd_subtitle (dvdsub), Start 232.369756 Stream #0:14[0x30]: Subtitle: dvd_subtitle (dvdsub), Start 232.369756 Stream #0:15[0x2d]: Subtitle: dvd_subtitle (dvdsub), Start 232.369756 Stream #0:16[0x2a]: Subtitle: dvd_subtitle (dvdsub), Start 232.369756 Stream #0:17[0x27]: Subtitle: dvd_subtitle (dvdsub), Start 232.369756 Stream #0:18[0x24]: Subtitle: dvd_subtitle (dvdsub), Start 232.369756 Stream #0:19[0x23]: Subtitle: dvd_subtitle (dvdsub), Start 232.369756 Stream #0:20[0x21]: Subtitle: dvd_subtitle (dvdsub), Start 232.369756 Stream #0:21[0x20]: Subtitle: dvd_subtitle (dvdsub), Start 232.369756 Stream #0:22[0x28]: Subtitle: dvd_subtitle (dvdsub), Start 232.449756 Stream #0:23[0x2e]: Subtitle: dvd_subtitle (dvdsub), Start 232.489756 Stream #0:24[0x29]: Subtitle: dvd_subtitle (dvdsub), Start 232.489756 Stream #0:25[0x31]: Subtitle: dvd_subtitle (dvdsub), Start 232.529756 File 'c:\foo.mp4' already exists. Overwrite? [y/N] y Stream mapping: Stream #0:1 (mpeg2video) -> colormatrix:default Stream #0:7 (dvdsub) -> scale:default overlay:default -> Stream #0:0 (libx264) Press [q] to stop, [?] for help [Parsed_colorspace_1 @ 0000000004be4a80] Unsupported input primaries 2 (unknown) [fc#0 @ 0000000001df0ec0] Error while filtering: Invalid argument [fc#0 @ 0000000001df0ec0] Task finished with error code: -22 (Invalid argument) [fc#0 @ 0000000001df0ec0] Terminating thread with return code -22 (Invalid argument) [vost#0:0/libx264 @ 0000000012ca3c00] [enc:libx264 @ 0000000011570640] Could not open encoder before EOF [vost#0:0/libx264 @ 0000000012ca3c00] Task finished with error code: -22 (Invalid argument) [vost#0:0/libx264 @ 0000000012ca3c00] Terminating thread with return code -22 (Invalid argument) [out#0/mp4 @ 0000000001dffec0] Nothing was written into output file, because at least one of its streams received no packets. frame= 0 fps=0.0 q=0.0 Lsize= 0KiB time=N/A bitrate=N/A speed=N/A elapsed=0:00:00.28 Conversion failed!

2 3

colorspace v colormatrix
by Mark Filipak 26 Jun '25

26 Jun '25

What is the relationship between colormatrix and colorspace? Are they used together or separately? Is colorspace obsolete? Is colormatrix a newer version of colorspace, but one that works correctly? Colorspace appears to be not needed. Is that true? Or, presented another way, in what circumstances should I use only colormatrix, in what circumstances should I use only colorspace, and in what circumstances should I use both? Thanks!--Mark.

3 3

svg linked images: rendering images referenced with xlink:href attribute
by swf2d49e＠4wrd.cc 25 Jun '25

25 Jun '25

Hi, I'm wondering if it was possible to add support for image links in svg files to ffmpeg? I was trying to use mpv (that uses ffmpeg) to render such linked images in .svg files directly, but it didn't show any images that were linked via xlink:href attribute. It only worked when images were base64 encoded (inlined) directly into svg. Would this cause a lot of security concerns? This would be an amazingly useful feature for my workflow at least. Best, swf2d49e

1 0