FFmpeg Preset Tutorial: Beginner's Guide to Encoding

Okay, here’s a very detailed article (approximately 5000 words) on FFmpeg presets, serving as a beginner’s guide to encoding:

FFmpeg Preset Tutorial: A Beginner’s Guide to Encoding

Introduction: The Power of Presets in Video Encoding

Video encoding is a complex process, involving a multitude of parameters that determine the final quality, file size, and compatibility of your video files. Manually tweaking each of these settings can be incredibly daunting, especially for beginners. This is where FFmpeg presets come to the rescue. FFmpeg presets are pre-configured collections of encoding options that simplify the process, allowing you to achieve good results without needing to be an encoding expert.

This comprehensive tutorial will delve into the world of FFmpeg presets, providing a beginner-friendly guide to understanding and utilizing them effectively. We’ll cover:

What are FFmpeg Presets? A fundamental explanation of their purpose and functionality.
Understanding the Basics of Video Encoding: A brief overview of key encoding concepts like codecs, bitrates, and resolutions. This section is crucial for grasping why presets work the way they do.
Commonly Used Presets: A detailed breakdown of the most frequently used presets for various scenarios (e.g., web streaming, archiving, device compatibility).
Preset Syntax and Usage: How to correctly incorporate presets into your FFmpeg commands.
Customizing Presets: How to modify existing presets or create your own from scratch to fine-tune your encoding workflow.
Preset Files: How to use and create external preset files for reusability and organization.
Troubleshooting Common Preset Issues: Addressing potential problems and how to resolve them.
Advanced Preset Concepts: Exploring more complex preset features and techniques for experienced users.
Practical Examples and Use Cases: Real-world scenarios demonstrating the application of presets.

By the end of this tutorial, you’ll have a solid understanding of FFmpeg presets and be able to confidently use them to encode your videos efficiently and effectively.

1. What are FFmpeg Presets?

FFmpeg presets are essentially shortcuts. They are named configurations that bundle together a set of encoding options, such as:

Codec: The algorithm used to compress the video and audio (e.g., H.264, H.265, VP9, AAC).
Bitrate: The amount of data used per second of video/audio, directly affecting quality and file size.
Rate Control Mode: How the encoder manages bitrate allocation (e.g., Constant Bitrate (CBR), Variable Bitrate (VBR), Constant Rate Factor (CRF)).
Profile and Level (for H.264/H.265): Restrictions on encoding features to ensure compatibility with specific devices or playback capabilities.
GOP Size (Group of Pictures): The number of frames between keyframes (I-frames), influencing seeking performance and error resilience.
B-frames: Bidirectional frames, which improve compression efficiency but can increase encoding complexity.
Other Codec-Specific Options: Numerous other settings that fine-tune the encoding process for a particular codec.

Instead of specifying each of these options individually in your FFmpeg command, you can simply use a preset name, and FFmpeg will automatically apply the associated settings. This dramatically simplifies the encoding process, making it more accessible to users of all skill levels.

Example:

Instead of:

bash ffmpeg -i input.mp4 -c:v libx264 -b:v 2000k -profile:v high -level:v 4.0 -g 250 -bf 2 -refs 3 output.mp4

You could use:

bash ffmpeg -i input.mp4 -c:v libx264 -preset medium output.mp4

The -preset medium option replaces a large number of individual settings, making the command much cleaner and easier to understand.

2. Understanding the Basics of Video Encoding (Essential Background)

Before diving into specific presets, it’s crucial to have a basic understanding of video encoding concepts. This knowledge will help you make informed decisions about which presets to use and how to customize them if needed.

Codec (Encoder/Decoder): A codec is a software algorithm that compresses (encodes) and decompresses (decodes) video and audio data. Different codecs offer varying levels of compression efficiency, quality, and computational complexity. Common video codecs include:
- H.264 (AVC): The most widely used video codec, offering good compression and broad compatibility.
- H.265 (HEVC): A more modern codec that provides significantly better compression than H.264 at the same quality level, but requires more processing power.
- VP9: An open-source codec developed by Google, offering similar performance to H.265.
- AV1: A newer open-source codec that aims to surpass both H.265 and VP9 in compression efficiency.
- Common audio codecs: AAC, MP3, Opus.
Bitrate: The bitrate is the amount of data used to represent one second of video or audio. It’s typically measured in kilobits per second (kbps) or megabits per second (Mbps). Higher bitrates generally result in better quality but larger file sizes. Lower bitrates reduce file size but can lead to noticeable quality degradation.
Resolution: The resolution defines the number of pixels in a video frame, typically expressed as width x height (e.g., 1920×1080, 1280×720, 640×480). Higher resolutions contain more detail but require higher bitrates to maintain quality.
Frame Rate: The frame rate is the number of frames displayed per second (fps). Common frame rates include 24, 25, 30, and 60 fps. Higher frame rates result in smoother motion but increase file size.
Rate Control Modes: These modes determine how the encoder allocates bits across the video frames.
- Constant Bitrate (CBR): The encoder uses a fixed bitrate throughout the entire video. This is suitable for streaming scenarios where a consistent data rate is required, but it can lead to inefficient use of bits (wasting bits on simple scenes and potentially not having enough for complex scenes).
- Variable Bitrate (VBR): The encoder varies the bitrate based on the complexity of the scene. More complex scenes receive higher bitrates, while simpler scenes receive lower bitrates. This generally results in better quality-to-file-size ratio than CBR. There are often different VBR modes (1-pass, 2-pass) that affect quality and encoding speed. 2-pass VBR is generally recommended for the best quality.
- Constant Rate Factor (CRF): This is a quality-based encoding mode. You specify a CRF value (typically between 0 and 51, with lower values meaning higher quality), and the encoder adjusts the bitrate to achieve that perceived quality level. CRF is often the preferred mode for achieving a specific quality target while letting the encoder optimize the bitrate.
Profile and Level (H.264/H.265): These are sets of restrictions that define the capabilities of the encoder and decoder. They ensure compatibility with specific devices or playback scenarios.
- Profiles: Define the set of features that are supported (e.g., Baseline, Main, High for H.264). Higher profiles generally offer better compression but require more processing power.
- Levels: Define the maximum resolution, frame rate, and bitrate that are allowed. Higher levels support higher resolutions and bitrates.
GOP Size (Group of Pictures): A GOP is a sequence of frames that starts with an I-frame (keyframe) and includes P-frames (predicted frames) and optionally B-frames (bidirectional frames).
- I-frames: Complete frames that can be decoded independently.
- P-frames: Frames that are predicted from previous frames.
- B-frames: Frames that are predicted from both previous and subsequent frames.
A larger GOP size can improve compression efficiency, but it can also make seeking (jumping to different points in the video) slower and less precise. A smaller GOP size improves seeking performance but can reduce compression efficiency.
B-frames: Using B-frames can improve compression because they reference both past and future frames. However, they also require more processing power to encode and decode, and can introduce latency in real-time encoding scenarios.

3. Commonly Used Presets (and What They Mean)

FFmpeg comes with a set of built-in presets for the libx264 (H.264) and libx265 (H.265) encoders. These presets offer a range of trade-offs between encoding speed and compression efficiency. The general rule is: slower presets produce better quality/smaller files, while faster presets prioritize speed at the expense of some quality/file size.

libx264 (H.264) Presets:

ultrafast: The fastest preset. Prioritizes encoding speed above all else. Results in the largest file sizes and potentially lower quality. Useful for quick previews or situations where encoding time is critical.
superfast: Very fast encoding. Still prioritizes speed, but offers slightly better compression than ultrafast.
veryfast: A good balance between speed and compression. A reasonable choice for many general-purpose encoding tasks.
faster: Slower than veryfast, but provides better compression.
fast: A good compromise between speed and quality. Often a good starting point for many encoding scenarios.
medium: The default preset. Offers a balanced approach between speed and compression. A solid choice for most general use cases.
slow: Provides better compression than medium, but takes longer to encode. A good option when quality and file size are more important than encoding speed.
slower: Even better compression than slow, but with a significant increase in encoding time.
veryslow: The slowest preset. Offers the best possible compression, but encoding can take a very long time. Suitable for archiving or situations where file size is paramount.
placebo: This preset is not recommended for practical use. It’s extremely slow and offers only marginal improvements over veryslow, often with diminishing returns. It’s primarily used for testing and benchmarking.

libx265 (H.265) Presets:

The libx265 presets follow a similar naming convention and logic as libx264, but the encoding times for equivalent presets are generally much longer for H.265 due to its increased complexity.

ultrafast
superfast
veryfast
faster
fast
medium (default)
slow
slower
veryslow
placebo (not recommended for practical use)

libvpx-vp9 (VP9) Presets:

VP9 presets are slightly different, using -cpu-used:

-cpu-used: This option controls the speed/quality trade-off. Values range from 0 to 8 (and sometimes higher, depending on FFmpeg version and build). Lower values mean slower encoding and better quality. The default is often 1 or 2. A good starting point is often around 4 or 5, and you can experiment to find the best balance for your needs. Higher values prioritize speed.

Other Codecs:

Many other codecs in FFmpeg have their own specific options for controlling quality and speed, but they may not use the -preset syntax in the same way. Refer to the FFmpeg documentation for the specific codec you’re using to find the appropriate options.

4. Preset Syntax and Usage

The basic syntax for using a preset is:

bash ffmpeg -i input.mp4 -c:v <codec> -preset <preset_name> output.mp4

-i input.mp4: Specifies the input file.
-c:v <codec>: Specifies the video codec (e.g., libx264, libx265, libvpx-vp9).
-preset <preset_name>: Specifies the preset to use (e.g., medium, veryfast, slow).
output.mp4: Specifies the output file.

Important Considerations:

Codec Compatibility: Make sure the preset you choose is compatible with the codec you’re using. For example, you can’t use a libx264 preset with libvpx-vp9.
Order Matters: The order of options in the FFmpeg command can sometimes be important. Generally, it’s a good practice to place the -preset option before other codec-specific options that you might want to override.
Overriding Preset Values: You can override specific settings within a preset by specifying them after the -preset option. This allows you to fine-tune the encoding process while still benefiting from the general configuration provided by the preset.

Example: Overriding Bitrate

bash ffmpeg -i input.mp4 -c:v libx264 -preset medium -b:v 4000k output.mp4

In this example, we’re using the medium preset, but we’re overriding the default bitrate with -b:v 4000k, setting it to 4000 kbps.

5. Customizing Presets

There are two primary ways to customize presets:

Overriding Options: As shown in the previous example, you can override specific preset settings by specifying them after the -preset option. This is the simplest way to make minor adjustments.
Creating Custom Preset Files: For more extensive customization or to create reusable presets, you can create external preset files.

5.1. Overriding Options (Detailed Explanation)

This method is ideal for making small tweaks to an existing preset without creating a whole new preset file. You can override almost any codec option. Here’s a breakdown of how to override common settings:

Bitrate (-b:v, -b:a): As shown before, use -b:v for video bitrate and -b:a for audio bitrate. Specify the bitrate in kbps (e.g., 2000k) or Mbps (e.g., 2M).
Rate Control Mode (-crf, -b:v, -minrate, -maxrate, -bufsize):
- CRF: ffmpeg -i input.mp4 -c:v libx264 -preset medium -crf 23 output.mp4 (CRF 23 is a good starting point; lower values = higher quality).
- 2-Pass VBR: ffmpeg -i input.mp4 -c:v libx264 -preset medium -b:v 4000k -pass 1 -an -f null /dev/null && ffmpeg -i input.mp4 -c:v libx264 -preset medium -b:v 4000k -pass 2 output.mp4 (This is a two-pass encode; the first pass analyzes the video, and the second pass does the actual encoding).
- CBR: ffmpeg -i input.mp4 -c:v libx264 -preset medium -b:v 4000k -minrate 4000k -maxrate 4000k -bufsize 8000k output.mp4 (Sets a constant bitrate of 4000k with a buffer size of 8000k).
GOP Size (-g): ffmpeg -i input.mp4 -c:v libx264 -preset medium -g 240 output.mp4 (Sets a GOP size of 240 frames).
B-frames (-bf): ffmpeg -i input.mp4 -c:v libx264 -preset medium -bf 3 output.mp4 (Sets the maximum number of consecutive B-frames to 3). -bf 0 disables B-frames.
Profile and Level (-profile:v, -level:v): ffmpeg -i input.mp4 -c:v libx264 -preset medium -profile:v high -level:v 4.0 output.mp4 (Sets the profile to High and the level to 4.0).
Other Codec-Specific Options: Consult the FFmpeg documentation for the specific codec you’re using to find the names and possible values of other options. You can usually find these by running ffmpeg -h encoder=<codec_name> (e.g., ffmpeg -h encoder=libx264).

5.2. Creating Custom Preset Files

Preset files are text files that contain a list of FFmpeg options. They allow you to define your own presets and reuse them easily.

Steps to Create a Preset File:

Create a Text File: Create a new text file with a .ffpreset extension (e.g., my_custom_preset.ffpreset). The name of the file (without the extension) will be the name of your preset.
Add FFmpeg Options: Inside the file, add the FFmpeg options you want to include in your preset, one option per line. Do not include the ffmpeg command itself or the input/output file names.
Save the File: Save the file in a location where FFmpeg can find it. There are several possible locations:
- ~/.ffmpeg/ (or %APPDATA%\ffmpeg\ on Windows): This is the recommended location for user-specific presets. Create the directory if it doesn’t exist.
- The FFmpeg presets directory: This is usually located within the FFmpeg installation directory. However, modifying this directory might be overwritten by future FFmpeg updates, so the user-specific directory is preferred.
- The same directory as your input video: This is convenient for project-specific presets.
- Any directory, specified with a full path: You can use a full file path to the preset file.

Example Preset File (my_custom_preset.ffpreset):

“`
coder=1
flags=+loop
cmp=+chroma
partitions=+parti8x8+parti4x4+partp8x8+partb8x8
me_method=hex
subq=7
me_range=16
g=250
keyint_min=25
sc_threshold=40
i_qfactor=0.71
b_strategy=1
qcomp=0.6
qmin=10
qmax=51
qdiff=4
bf=3
refs=3
directpred=1
trellis=1
flags2=+bpyramid+wpred+mixed_refs+dct8x8+fastpskip
wpredp=2

“`

Using the Custom Preset File:

bash ffmpeg -i input.mp4 -c:v libx264 -preset my_custom_preset output.mp4

Or, if the preset file is not in a standard location:

bash ffmpeg -i input.mp4 -c:v libx264 -preset /path/to/my_custom_preset.ffpreset output.mp4

6. Preset Files

This section expands on the concept of preset files, covering more advanced usage and organization.

6.1. Organizing Preset Files

As you create more presets, it’s helpful to organize them. You can create subdirectories within your ~/.ffmpeg/ directory (or %APPDATA%\ffmpeg\) to categorize your presets. For example:

~/.ffmpeg/ h264/ web_streaming.ffpreset archive_quality.ffpreset fast_encode.ffpreset h265/ high_quality.ffpreset mobile_device.ffpreset vp9/ youtube_upload.ffpreset

When using presets from subdirectories, you need to include the subdirectory name in the preset name:

bash ffmpeg -i input.mp4 -c:v libx264 -preset h264/web_streaming output.mp4

6.2. Preset File Syntax (Advanced)

Comments: You can add comments to your preset files using the # symbol. Anything after a # on a line is ignored by FFmpeg. This is useful for documenting your presets.

“`

This is a comment explaining the purpose of this preset.

coder=1 # Another comment explaining this option.
“`
Variable Substitution (Limited): FFmpeg has limited support for variable substitution within preset files. This is primarily useful for setting the bitrate dynamically. You can use the $bitrate variable, but it must be set using the -b:v option before the -preset option. This is a quirk of how FFmpeg parses options.

“`

my_bitrate_preset.ffpreset

b=$bitrate
“`

bash ffmpeg -i input.mp4 -c:v libx264 -b:v 2000k -preset my_bitrate_preset output.mp4

This is generally not recommended for complex variable manipulation. For more advanced scripting, consider using a shell script or a more powerful scripting language to generate your FFmpeg commands.

6.3. Sharing Presets

Preset files are plain text, making them easy to share with others. You can simply copy and paste the contents of the file or share the file itself. This is a great way to collaborate on encoding workflows or to distribute optimized settings for specific use cases.

7. Troubleshooting Common Preset Issues

Unknown preset Error: This means FFmpeg can’t find the preset file you specified. Double-check the following:
- Preset Name: Make sure you typed the preset name correctly (case-sensitive).
- File Location: Verify that the preset file is in one of the standard locations (see section 5.2) or that you’re providing the correct path to the file.
- File Extension: Ensure the preset file has the .ffpreset extension.
- Subdirectory: If you’re using a preset in a subdirectory, include that in the name (e.g., h264/my_preset).
Option not found Error: This usually indicates an error within the preset file itself.
- Typographical Errors: Carefully check for typos in the option names or values.
- Invalid Option Values: Make sure the values you’re using for each option are valid for the codec you’re using. Refer to the FFmpeg documentation for the specific codec.
- Outdated Options: Some options might be deprecated or renamed in newer versions of FFmpeg. Check the FFmpeg documentation for the version you’re using.
- Codec Compatibility: Ensure that the options you’re using are compatible with the chosen codec.
Unexpected Encoding Results: If the output video doesn’t look as expected, consider the following:
- Preset Choice: The preset you’re using might not be suitable for your source material or desired output quality. Try a different preset or adjust the settings.
- Overriding Options: If you’re overriding options, double-check that you’re using the correct syntax and values.
- Source Material: The quality of the output video is limited by the quality of the input video. If the source material is low quality, the encoded video will also be low quality, regardless of the preset used.
- Conflicting Options: Make sure that you are not specifying options that conflict with those in the preset or with each other.
Slow Encoding Speed: If encoding is taking too long:
- Preset Choice: You’ve likely selected a “slow” preset (e.g., veryslow, slower). Consider using a faster preset.
- Hardware Limitations: Encoding, especially with H.265, can be very demanding on your CPU. Older or less powerful hardware will take longer. Consider using hardware acceleration if your hardware and FFmpeg build support it (see section 8.2).
- Source Resolution and Frame Rate: Encoding high-resolution, high-frame-rate video will naturally take longer than encoding lower-resolution, lower-frame-rate video.
Large File Size: If the output file is larger than expected:
- Preset Choice: You might be using a preset that prioritizes quality over file size (e.g., veryslow). Try a faster preset.
- Bitrate: Check the bitrate setting (either in the preset or overridden). Lower the bitrate if you need a smaller file size.
- Codec: H.264 will generally produce larger files than H.265 or VP9 at the same quality level.

8. Advanced Preset Concepts

8.1. Tuning Options (libx264 and libx265)

In addition to presets, libx264 and libx265 offer “tuning” options that further optimize the encoder for specific types of content or encoding goals. These are applied using the -tune option.

libx264 Tuning Options:

film: Optimized for film content (grain retention).
animation: Optimized for animation (flat colors, sharp lines).
grain: Preserves grain in film content (similar to film, but stronger).
stillimage: Optimized for still images.
psnr: Optimizes for PSNR (Peak Signal-to-Noise Ratio) metric.
ssim: Optimizes for SSIM (Structural Similarity Index) metric.
fastdecode: Optimizes for faster decoding (reduces complexity).
zerolatency: Optimizes for low-latency encoding (e.g., live streaming).

libx265 Tuning Options:

psnr
ssim
grain
zerolatency
fastdecode
animation (since x265 3.0)

Example:

bash ffmpeg -i input.mp4 -c:v libx264 -preset medium -tune film output.mp4

8.2. Hardware Acceleration

Hardware acceleration can significantly speed up encoding by offloading the processing to your GPU (Graphics Processing Unit) or a dedicated video encoding chip. FFmpeg supports various hardware acceleration technologies, including:

NVIDIA NVENC: For NVIDIA GPUs.
Intel Quick Sync Video (QSV): For Intel integrated graphics.
AMD AMF (Advanced Media Framework): For AMD GPUs.
VideoToolbox For Apple Silicon and newer Macs.
VA-API: A cross-platform API, frequently used on Linux.

To use hardware acceleration, you need:

Compatible Hardware: A GPU or CPU that supports one of the above technologies.
FFmpeg Build with Support: An FFmpeg build that includes support for the specific hardware acceleration technology. You may need to compile FFmpeg yourself or download a pre-built version with the necessary features enabled.
Correct Codec and Options: Use the appropriate codec and options for your hardware.

Example (NVIDIA NVENC with H.264):

bash ffmpeg -i input.mp4 -c:v h264_nvenc -preset slow output.mp4

Example (Intel Quick Sync Video with H.264):

bash ffmpeg -i input.mp4 -c:v h264_qsv -preset slow output.mp4
Example (Apple VideoToolbox with H.264):

bash ffmpeg -i input.mp4 -c:v h264_videotoolbox -preset slow output.mp4
Example (VAAPI with H.264):
“`bash
ffmpeg -hwaccel vaapi -vaapi_device /dev/dri/renderD128 -i input.mp4 -vf ‘format=nv12,hwupload’ -c:v h264_vaapi -preset slow output.mp4

“`

Important: The specific codec names and options for hardware acceleration can vary depending on your FFmpeg version and build. Consult the FFmpeg documentation and the documentation for your hardware acceleration technology for the most up-to-date information. ffmpeg -encoders will list all available encoders, and ffmpeg -h encoder=h264_nvenc (replace h264_nvenc with the relevant encoder) will provide help on that specific encoder.

8.3 x264 and x265-params
For even more granular control over libx264 and libx265, you can use the -x264-params and -x265-params options, respectively. These allow you to pass parameters directly to the x264 and x265 libraries, bypassing the FFmpeg wrapper. This gives you access to all of the underlying encoder settings.

Warning: This is an advanced technique and requires a deep understanding of x264/x265 parameters. Incorrect settings can lead to poor quality, encoding errors, or incompatibility.

Example (x264-params):

bash ffmpeg -i input.mp4 -c:v libx264 -preset veryslow -x264-params "keyint=120:min-keyint=24:scenecut=40" output.mp4

Example (x265-params):
bash ffmpeg -i input.mp4 -c:v libx265 -preset veryslow -x265-params "keyint=120:min-keyint=24:scenecut=40" output.mp4

Refer to the x264 and x265 documentation for a complete list of available parameters. This level of control is generally only necessary for very specific encoding scenarios or for users who need to fine-tune every aspect of the encoding process.

9. Practical Examples and Use Cases

9.1. Web Streaming (H.264)

bash ffmpeg -i input.mp4 -c:v libx264 -preset veryfast -b:v 2000k -maxrate 2500k -bufsize 5000k -c:a aac -b:a 128k -f flv rtmp://your_streaming_server/live/stream_key

This command uses the veryfast preset for fast encoding, sets a target bitrate of 2000 kbps with a maximum rate and buffer size for streaming, uses AAC audio, and outputs to an RTMP server.

9.2. Archiving High-Quality Video (H.265)

bash ffmpeg -i input.mp4 -c:v libx265 -preset veryslow -crf 18 -c:a copy output.mkv

This command uses the veryslow preset for maximum compression, uses CRF 18 for high quality, and copies the audio stream without re-encoding (assuming it’s already in a suitable format).

9.3. Creating Mobile-Friendly Videos (H.264)

bash ffmpeg -i input.mp4 -c:v libx264 -preset medium -profile:v baseline -level:v 3.0 -vf scale=1280:720 -b:v 1500k -c:a aac -b:a 96k output.mp4

This command uses the medium preset, sets the profile and level for compatibility with older devices, scales the video to 720p resolution, sets a moderate bitrate, and uses AAC audio.

9.4. YouTube Upload (VP9)

bash ffmpeg -i input.mp4 -c:v libvpx-vp9 -cpu-used 4 -b:v 0 -crf 30 -c:a libopus -b:a 128k output.webm

This command uses libvpx-vp9 with -cpu-used 4 for a good balance of speed and quality, uses CRF 30 for a reasonable quality target, uses libopus for audio, and outputs a WebM file suitable for YouTube. Note that -b:v 0 is often used with VP9 and CRF; it tells the encoder to use CRF as the primary quality control.

9.5 Converting a video for use on a specific device

If you are preparing videos for a specific device (phone, tablet, smart TV), consult the device’s technical specifications. Look for:

Supported Codecs: (H.264, H.265, VP9, etc.)
Supported Profiles and Levels: (e.g., H.264 Baseline Profile Level 3.0)
Maximum Resolution and Frame Rate: (e.g., 1920×1080 at 30fps)
Supported Audio Codecs: (e.g., AAC, MP3)

Use this information to create an appropriate FFmpeg command, potentially using a preset as a starting point and overriding specific settings as needed.

Conclusion

FFmpeg presets are a powerful tool for simplifying video encoding. By understanding the basics of video encoding and the purpose of different presets, you can quickly and efficiently encode videos for various purposes. The ability to customize presets and create your own preset files provides even greater flexibility and control. This tutorial has provided a comprehensive foundation for using FFmpeg presets effectively, from beginner concepts to advanced techniques. Remember to consult the FFmpeg documentation for the most up-to-date information and to experiment with different settings to find the optimal configuration for your specific needs.

This is a comment explaining the purpose of this preset.

my_bitrate_preset.ffpreset

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